springcloud高级

第一章 负载均衡 Ribbon

 
(Spring Cloud 高级)
 

一、 Ribbon 在微服务中的作用

 

1 什么是 Ribbon

 
1.Ribbon 是一个基于 Http 和 TCP 的客服端负载均衡工具,它是基于 Netflix Ribbon 实
现的。
2.它不像 spring cloud 服务注册中心、配置中心、API 网关那样独立部署,但是它几乎
存在于每个 spring cloud 微服务中。包括 feign 提供的声明式服务调用也是基于该 Ribbon
实现的。
3.ribbon 默认提供很多种负载均衡算法,例如 轮询、随机 等等。甚至包含自定义的负
载均衡算法。
 

2 Ribbon 解决了什么问题

 
他解决并提供了微服务的负载均衡的问题。
 

二、 集中式与进程内负载均衡的区别

 

1 负载均衡解决方案的分类

 
目前业界主流的负载均衡方案可分成两类:
 
第一类:集中式负载均衡, 即在 consumer 和 provider 之间使用独立的负载均衡设施(可
以是硬件,如 F5, 也可以是软件,如 nginx), 由该设施负责把 访问请求 通过某种策略转发
至 provider;
 
第二类:进程内负载均衡,将负载均衡逻辑集成到 consumer,consumer 从服务注册中
心获知有哪些地址可用,然后自己再从这些地址中选择出一个合适的 provider。
Ribbon 就属于后者,它只是一个类库,集成于 consumer 进程,consumer 通过它来获取
到 provider 的地址。
 
 

2 两种负载均衡方式结构图

 

 

三、 Ribbon 的入门案例

 
Ribbon 中对于集群的服务采用的负载均衡的策略默认的是轮询
 

1 Consumer

@Service
public class UserService {
@Autowired
private LoadBalancerClient loadBalancerClient;//ribbon 负
载均衡器
public List<User> getUsers(){
//选择调用的服务的名称
//ServiceInstance 封装了服务的基本信息,如 IP,端口
ServiceInstance si = 
this.loadBalancerClient.choose("eureka-provider");
//拼接访问服务的 URL
StringBuffer sb = new StringBuffer();
//http://localhost:9090/user
sb.append("http://").append(si.getHost()).append(":").appen
d(si.getPort()).append("/user");
System.out.println(sb.toString());
//springMVC RestTemplate
RestTemplate rt = new RestTemplate();
ParameterizedTypeReference<List<User>> type = new
ParameterizedTypeReference<List<User>>() {};
//ResponseEntity:封装了返回值信息
ResponseEntity<List<User>> response = 
rt.exchange(sb.toString(),HttpMethod.GET, null, type);
List<User> list =response.getBody();
return list; } }
View Code

 

2 Consumer 的配置文件

spring.application.name=eureka-consumer
server.port=9091
#设置服务注册中心地址,指向另一个注册中心
eureka.client.serviceUrl.defaultZone=http://user:123456@eur
eka1:8761/eureka/,http://user:123456@eureka2:8761/eureka/

3 Provider 的集群部署

 

3.1将 provider 打包。部署到 linux 环境中

 

3.2创建启动脚本 server.sh

#!/bin/bash
cd `dirname $0`
CUR_SHELL_DIR=`pwd`
CUR_SHELL_NAME=`basename ${BASH_SOURCE}`
JAR_NAME="springcloud-eureka-provider-0.0.1-SNAPSHOT.jar"
JAR_PATH=$CUR_SHELL_DIR/$JAR_NAME
#JAVA_MEM_OPTS=" -server -Xms1024m -Xmx1024m -XX:PermSize=128m"
JAVA_MEM_OPTS=""
#SPRING_PROFILES_ACTIV="-Dspring.profiles.active=eureka2"
SPRING_PROFILES_ACTIV=""
LOG_DIR=$CUR_SHELL_DIR/logs
LOG_PATH=$LOG_DIR/${JAR_NAME%..log
echo_help()
{
 echo -e "syntax: sh $CUR_SHELL_NAME start|stop"
}
if [ -z $1 ];then
 echo_help
 exit 1
fi
if [ ! -d "$LOG_DIR" ];then
 mkdir "$LOG_DIR"
fi
if [ ! -f "$LOG_PATH" ];then
 touch "$LOG_DIR"
fi
if [ "$1" == "start" ];then
 # check server
 PIDS=`ps --no-heading -C java -f --width 1000 | grep $JAR_NAME | awk '{print $2}'`
 if [ -n "$PIDS" ]; then
 echo -e "ERROR: The $JAR_NAME already started and the PID is ${PIDS}."
 exit 1
 fi
 echo "Starting the $JAR_NAME..."
 # start
 nohup java $JAVA_MEM_OPTS -jar $SPRING_PROFILES_ACTIV $JAR_PATH >> 
$LOG_PATH 2>&1 &
 COUNT=0
 while [ $COUNT -lt 1 ]; do
 sleep 1
 COUNT=`ps --no-heading -C java -f --width 1000 | grep "$JAR_NAME" | awk 
'{print $2}' | wc -l`
 if [ $COUNT -gt 0 ]; then
 break
 fi
 done
 PIDS=`ps --no-heading -C java -f --width 1000 | grep "$JAR_NAME" | awk '{print 
$2}'`
 echo "${JAR_NAME} Started and the PID is ${PIDS}."
 echo "You can check the log file in ${LOG_PATH} for details."
elif [ "$1" == "stop" ];then
 PIDS=`ps --no-heading -C java -f --width 1000 | grep $JAR_NAME | awk '{print $2}'`
 if [ -z "$PIDS" ]; then
 echo "ERROR:The $JAR_NAME does not started!"
 exit 1
 fi
 echo -e "Stopping the $JAR_NAME..."
 for PID in $PIDS; do
 kill $PID > /dev/null 2>&1
 done
 COUNT=0
 while [ $COUNT -lt 1 ]; do
 sleep 1
 COUNT=1
 for PID in $PIDS ; do
 PID_EXIST=`ps --no-heading -p $PID`
 if [ -n "$PID_EXIST" ]; then
 COUNT=0
 break
 fi
 done
 done
 echo -e "${JAR_NAME} Stopped and the PID is ${PIDS}."
else
 echo_help
 exit 1
fi
View Code

 

4 启动 Consumer 

 

四、 Ribbon 的常见负载均衡策略

 

 

 

 

 

 

五、 Ribbon 指定其他负载均衡策略

 

1 修改代码更换负载均衡策略

 

1.1创建项目

 

 

1.2在启动类中添加创建负载均衡策略对象的方法

@EnableEurekaClient
@SpringBootApplication
public class ConsumerApplication {
7 区域敏感性策略 ZoneAvoidanceRule:
1.以一个区域为单位考察可
用性,对于不可用的区域整个丢 弃,从剩下区域中选可用的
provider
2.如果这个 ip 区域内有一个或多
个实例不可达或响应变慢,都会降
低该 ip 区域内其他 ip 被选中的权 重。
@Bean
public RandomRule createRule(){
return new RandomRule();
}
public static void main(String[] args) {
SpringApplication.run(ConsumerApplication.class, 
args);
} }

2 修改配置文件更换负载均衡策略

#设置负载均衡策略 eureka-provider 为调用的服务的名称
eureka-provider.ribbon.NFLoadBalancerRuleClassName=com.netf
lix.loadbalancer.RandomRule

六、 Ribbon 的点对点直连 

 

 

2 去掉 Eureka 的坐标添加 Ribbon 坐标

<!-- ribbon 坐标 --> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-ribbon</artifactId>
</dependency>

3 修改配置文件去掉与 Eureka 相关的配置,添加新配置项

spring.application.name=eureka-consumer-LB
server.port=9091
#禁用 eureka
ribbon.eureka.enabled=false
#指定具体的服务实例清单
eureka-provider.ribbon.listOfServers=192.168.70.137:9090

4 修改启动类去掉报错代码

@SpringBootApplication
public class ConsumerApplication {
/*@Bean
public RandomRule createRule(){
return new RandomRule();
}*/
public static void main(String[] args) {
SpringApplication.run(ConsumerApplication.class, 
args);
} }

 

 

第二章 声明式服务调用 Feign

 
(Spring Cloud 高级)
 

一、 什么是 Feign

 
Feign 是一种声明式、模板化的 HTTP 客户端(仅在 consumer 中使用)。
 

二、 什么是声明式,有什么作用,解决什么问题?

 
声明式调用就像调用本地方法一样调用远程方法;无感知远程 http 请求。
 
1,Spring Cloud 的声明式调用, 可以做到使用 HTTP 请求远程服务时能就像调用本地
方法一样的体验,开发者完全感知不到这是远程方法,更感知不到这是个 HTTP 请求。
 
2,它像 Dubbo 一样,consumer 直接调用接口方法调用 provider,而不需要通过常规的
Http Client 构造请求再解析返回数据。
 
3,它解决了让开发者调用远程接口就跟调用本地方法一样,无需关注与远程的交互细
节,更无需关注分布式环境开发。
 

三、 编写 Feign 的入门案例

1 需求

 
实现 Ego 电商平台中的商品基本操作
 

2 项目设计

 

 

3 创建项目

 

3.1创建 Product-Service

 

3.1.1创建项目

 

 

3.1.2修改 pom 文件添加依赖

<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.bjsxt</groupId>
    <artifactId>springcloud-ego-product-service</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.13.RELEASE</version>
        <relativePath /> <!-- lookup parent from repository -->
    </parent>
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>
    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Dalston.SR5</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-config</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-eureka</artifactId>
        </dependency>
    </dependencies>
</project>

 

3.1.3创建 Service 接口

/**
* Product 服务接口
* @author Administrator
*
*/
@RequestMapping("/product")
public interface ProductService {
//查询所有商品
@RequestMapping(value="/findAll",method=RequestMethod.GE
T)
public List<Product> findAll();
}
View Code

3.1.4创建 POJO 类 

public class Product {
private Integer id;
private String name;
public Integer getId() {
return id; }
public void setId(Integer id) {
this.id = id; }
public String getName() {
return name; }
public void setName(String name) {
this.name = name; }
public Product(Integer id, String name) {
super();
this.id = id;
this.name = name; }
public Product() {
super();
// TODO Auto-generated constructor stub
} }
View Code

3.2创建 Product-Provider

 

3.2.1创建项目

 

 

3.2.2修改 pom 文件添加依赖

<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 
http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion> 
    <groupId>com.bjsxt</groupId> 
    <artifactId>springcloud-ego-product-consumer</artifactId> 
    <version>0.0.1-SNAPSHOT</version> 
    <parent> 
        <groupId>org.springframework.boot</groupId> 
        <artifactId>spring-boot-starter-parent</artifactId> 
        <version>1.5.13.RELEASE</version> 
        <relativePath /> <!-- lookup parent from repository -->
    </parent> 
    <properties> 
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> 
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>
    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId> 
                <version>Dalston.SR5</version>
                <type>pom</type> 
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-config</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-eureka</artifactId>
        </dependency>
    <!-- 添加 Feign 坐标 -->
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-feign</artifactId>
    </dependency>
    <!-- 添加 product-service 坐标 -->
    <dependency>
        <groupId>com.bjsxt</groupId>
        <artifactId>springcloud-ego-product-service</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </dependency>
</dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

 

3.2.3添加全局配置文件

spring.application.name=ego-product-provider
server.port=9001
#设置服务注册中心地址,指向另一个注册中心
eureka.client.serviceUrl.defaultZone=http://user:123456@eur
eka1:8761/eureka/,http://user:123456@eureka2:8761/eureka/

3.2.4编写 Controller

/**
* Product-Provider 服务
* @author Administrator
*
*/
@RestController
public class ProductController implements ProductService {
@Override
public List<Product> findAll() {
List<Product> list = new ArrayList<>();
list.add(new Product(1, "电视"));
list.add(new Product(2, "电脑"));
list.add(new Product(3, "冰箱"));
list.add(new Product(4, "手电筒"));
return list; } }

3.2.5编写 SpringBoot 的启动类

@EnableEurekaClient
@SpringBootApplication
public class ProviderApplication {
public static void main(String[] args) {
SpringApplication.run(ProviderApplication.class, 
args);
} }
View Code

3.3创建 Product-consumer

3.3.1创建项目

 

 

3.3.2修改 pom 文件添加依赖

<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 
http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion> 
    <groupId>com.bjsxt</groupId> 
    <artifactId>springcloud-ego-product-consumer</artifactId>
    <version>0.0.1-SNAPSHOT</version> 
    <parent> 
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.13.RELEASE</version> 
        <relativePath /> <!-- lookup parent from repository -->
    </parent> 
    <properties> 
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> 
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> 
        <java.version>1.8</java.version>
    </properties>
    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Dalston.SR5</version> 
                <type>pom</type> 
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement> 
    <dependencies> 
        <dependency> 
            <groupId>org.springframework.boot</groupId> 
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency> 
        <dependency> 
            <groupId>org.springframework.boot</groupId> 
            <artifactId>spring-boot-starter-test</artifactId> 
            <scope>test</scope>
        </dependency> 
        <dependency> 
            <groupId>org.springframework.cloud</groupId> 
            <artifactId>spring-cloud-starter-config</artifactId>
        </dependency> 
        <dependency> 
            <groupId>org.springframework.cloud</groupId> 
            <artifactId>spring-cloud-starter-eureka</artifactId>
        </dependency>
    <!-- 添加 Feign 坐标 -->
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-feign</artifactId>
    </dependency>
    <!-- 添加 product-service 坐标 -->
        <dependency>
            <groupId>com.bjsxt</groupId>
            <artifactId>springcloud-ego-product-service</artifactId>
            <version>0.0.1-SNAPSHOT</version>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

 

3.3.3添加全局配置文件

spring.application.name=ego-product-consumer
server.port=9002
#设置服务注册中心地址,指向另一个注册中心
eureka.client.serviceUrl.defaultZone=http://user:123456@eur
eka1:8761/eureka/,http://user:123456@eureka2:8761/eureka/

3.3.4编写 Controller 

/**
* Product Consumer 服务
* @author Administrator
*
*/
@RestController
public class ProductController {
@Autowired
ProductConsumerService consumerservice;
/**
* Consumer 中的查询所有商品的方法
* @return
*/
@RequestMapping(value="/list",method=RequestMethod.GET)
public List<Product> getAll(){
return this.consumerservice.findAll();
} }
View Code

3.3.5编写 Service 接口

@FeignClient(name="ego-product-provider")
public interface ProductConsumerService extends
ProductService{
}

3.3.6编写 SpringBoot 启动类

@EnableFeignClients
@EnableDiscoveryClient
@SpringBootApplication
public class ConsumerApplication {
public static void main(String[] args) {
SpringApplication.run(ConsumerApplication.class, 
args);
} }

四、 Feign 的请求参数处理

1 单个参数处理
 
1.1修改 Product-Service
 
 
/**
* Product 服务接口
* @author Administrator
*
*/
@RequestMapping("/product")
public interface ProductService {
//查询所有商品
@RequestMapping(value="/findAll",method=RequestMethod.GE
T)
public List<Product> findAll();
//根据商品 ID 查询商品
@RequestMapping(value="/getProductById",method=RequestMe
thod.GET)
public Product getProductById(@RequestParam("id") Integer 
id);
}
View Code
1.2修改 Product-Provider
/**
* Product-Provider 服务
* @author Administrator
*
*/
@RestController
public class ProductController implements ProductService {
@Override
public List<Product> findAll() {
List<Product> list = new ArrayList<>();
list.add(new Product(1, "电视"));
list.add(new Product(2, "电脑"));
list.add(new Product(3, "冰箱"));
list.add(new Product(4, "手电筒"));
return list; }
@Override
public Product getProductById(Integer id) {
return new Product(id, "SpringCloud");
} }
View Code
1.3修改 Product-Consumer 
/**
* Product Consumer 服务
* @author Administrator
*
*/
@RestController
public class ProductController {
@Autowired
ProductConsumerService consumerservice;
/**
* Consumer 中的查询所有商品的方法
* @return
*/
@RequestMapping(value="/list",method=RequestMethod.GET)
public List<Product> getAll(){
return this.consumerservice.findAll();
}
/**
* Consumer 中根据商品 id 查询商品
*/
@RequestMapping(value="/get",method=RequestMethod.GET)
public Product getProduct(@RequestParam("id") Integer id){
return this.consumerservice.getProductById(id);
} }
View Code

 

2 多个参数处理
 
2.1方式一 GET 提交方式
 
2.1.1修改 Product-Service
/**
* Product 服务接口
* @author Administrator
*
*/
@RequestMapping("/product")
public interface ProductService {
//查询所有商品
@RequestMapping(value="/findAll",method=RequestMethod.GE
T)
public List<Product> findAll();
//根据商品 ID 查询商品
@RequestMapping(value="/getProductById",method=RequestMe
thod.GET)
public Product getProductById(@RequestParam("id") Integer 
id);
//添加商品传递多个参数 方式一 :GET 方式
@RequestMapping(value="/add",method=RequestMethod.GET)
public Product addProduct(@RequestParam("id") Integer 
id,@RequestParam("name") String name);
}
View Code
 
 
2.1.2修改 Product-Provider
/**
* Product-Provider 服务
* @author Administrator
*
*/
@RestController
public class ProductController implements ProductService {
@Override
public List<Product> findAll() {
List<Product> list = new ArrayList<>();
list.add(new Product(1, "电视"));
list.add(new Product(2, "电脑"));
list.add(new Product(3, "冰箱"));
list.add(new Product(4, "手电筒"));
return list; }
@Override
public Product getProductById(Integer id) {
return new Product(id, "SpringCloud");
}
@Override
public Product addProduct(Integer id, String name) {
return new Product(id, name);
}
View Code
2.1.3修改 Product-Consumer
/**
* Product Consumer 服务
* @author Administrator
*
*/
@RestController
public class ProductController {
@Autowired
ProductConsumerService consumerservice;
/**
* Consumer 中的查询所有商品的方法
* @return
*/
@RequestMapping(value="/list",method=RequestMethod.GET)
public List<Product> getAll(){
return this.consumerservice.findAll();
}
/**
* Consumer 中根据商品 id 查询商品
*/
@RequestMapping(value="/get",method=RequestMethod.GET)
public Product getProduct(@RequestParam("id") Integer id){
return this.consumerservice.getProductById(id);
}
/**
* 商品添加 传递多个参数。方式一:GET
*/
@RequestMapping(value="/add",method=RequestMethod.GET)
public Product addProduct(Product product){
return
this.consumerservice.addProduct(product.getId(), 
product.getName());
} }
View Code

 

2.2方式二 POST 提交方式

 
2.2.1修改 Product-Service
/**
* Product 服务接口
* @author Administrator
*
*/
@RequestMapping("/product")
public interface ProductService {
//查询所有商品
@RequestMapping(value="/findAll",method=RequestMethod.GE
T)
public List<Product> findAll();
//根据商品 ID 查询商品
@RequestMapping(value="/getProductById",method=RequestMe
thod.GET)
public Product getProductById(@RequestParam("id") Integer 
id);
//添加商品传递多个参数 方式一 :GET 方式
@RequestMapping(value="/add",method=RequestMethod.GET)
public Product addProduct(@RequestParam("id") Integer 
id,@RequestParam("name") String name);
//添加商品传递多个参数 方式二 :POST 方式
@RequestMapping(value="/add",method=RequestMethod.POST)
public Product addProduct2(@RequestBody Product product);
}
View Code
2.2.2修改 Product-Provider
/**
* Product-Provider 服务
* @author Administrator
*
*/
@RestController
public class ProductController implements ProductService {
@Override
public List<Product> findAll() {
List<Product> list = new ArrayList<>();
list.add(new Product(1, "电视"));
list.add(new Product(2, "电脑"));
list.add(new Product(3, "冰箱"));
list.add(new Product(4, "手电筒"));
return list; }
@Override
public Product getProductById(Integer id) {
return new Product(id, "SpringCloud"); }
@Override
public Product addProduct(Integer id, String name) {
return new Product(id, name);
}
@Override
public Product addProduct2(@RequestBody Product product) {
return product;
} }
View Code
2.2.3修改 Product-Consumer 
/**
* Product Consumer 服务
* @author Administrator
*
*/
@RestController
public class ProductController {
@Autowired
ProductConsumerService consumerservice;
/**
* Consumer 中的查询所有商品的方法
* @return
*/
@RequestMapping(value="/list",method=RequestMethod.GET)
public List<Product> getAll(){
return this.consumerservice.findAll();
}
/**
* Consumer 中根据商品 id 查询商品
*/
@RequestMapping(value="/get",method=RequestMethod.GET)
public Product getProduct(@RequestParam("id") Integer id){
return this.consumerservice.getProductById(id);
}
/**
* 商品添加 传递多个参数。方式一:GET
*/
@RequestMapping(value="/add",method=RequestMethod.GET)
public Product addProduct(Product product){
return
this.consumerservice.addProduct(product.getId(), 
product.getName());
}
/**
* 商品添加 传递多个参数。方式二:POST
*/
@RequestMapping(value="/add2",method=RequestMethod.GET)
public Product addProduct2(Product product){
return this.consumerservice.addProduct2(product);
} }
View Code

 

五、 Feign 的性能优化

 

1 通过 Gzip 压缩算法,提升网络通信速度

 

1.1gzip 介绍

 
gzip 介绍:gzip 是一种数据格式,采用用 deflate 算法压缩 data;gzip 是一种流行的文件
压缩算法,应用十分广泛,尤其是在 Linux 平台。
gzip 能力:当 Gzip 压缩到一个纯文本文件时,效果是非常明显的,大约可以减少 70%以上的文件大小。
gzip 作用:网络数据经过压缩后实际上降低了网络传输的字节数,最明显的好处就是可
以加快网页加载的速度。网页加载速度加快的好处不言而喻,除了节省流量,改善用户的浏
览体验外,另一个潜在的好处是 Gzip 与搜索引擎的抓取工具有着更好的关系。例如 Google
就可以通过直接读取 gzip 文件来比普通手工抓取 更快地检索网页。
 

1.2HTTP 协议中关于压缩传输的规定

 
第一:客户端向服务器请求中带有:Accept-Encoding:gzip, deflate 字段,向服务器表示,
客户端支持的压缩格式(gzip 或者 deflate),如果不发送该消息头,服务器是不会压缩的。
第二:服务端在收到请求之后,如果发现请求头中含有 Accept-Encoding 字段,并且支
持该类型的压缩,就对响应报文压缩之后返回给客户端,并且携带 Content-Encoding:gzip 消
息头,表示响应报文是根据该格式压缩过的。
第三:客户端接收到请求之后,先判断是否有 Content-Encoding 消息头,如果有,按该
格式解压报文。否则按正常报文处理。
 

2 编写支持 Gzip 压缩案例

 

2.2修改配置文件

 

2.2.1只配置 Consumer 通过 Feign 到 Provider 的请求与相应

的 Gzip 压缩

 

#-----------------------------feign gzip
#配置请求 GZIP 压缩
feign.compression.request.enabled=true
#配置响应 GZIP 压缩
feign.compression.response.enabled=true
#配置压缩支持的 MIME TYPE
feign.compression.request.mime-types=text/xml,application/x
ml,application/json
#配置压缩数据大小的最小阀值,默认 2048
feign.compression.request.min-request-size=512

2.2.2对客户端浏览器的请求以及 Consumer 对 provider 的请

求与响应做 Gzip 压缩

#-----------------------------spring boot gzip
#是否启用压缩
server.compression.enabled=true
server.compression.mime-types=application/json,application/
xml,text/html,text/xml,text/plain

3 采用 Http 连接池,提升 Feign 的并发吞吐量

 
为什么 http 连接池能提升性能?
 

3.1http 的背景原理

 
a. 两台服务器建立 http 连接的过程是很复杂的一个过程,涉及到多个数据包的交换,并
且也很耗时间。
b. Http 连接需要的 3 次握手 4 次分手开销很大,这一开销对于大量的比较小的 http 消
息来说更大。
 

3.2优化解决方案

 
a. 如果我们直接采用 http 连接池,节约了大量的 3 次握手 4 次分手;这样能大大提升吞
吐率。
b. feign 的 http 客户端支持 3 种框架;HttpURLConnection、httpclient、okhttp;默认是
HttpURLConnection。
c. 传统的 HttpURLConnection 是 JDK 自带的,并不支持连接池,如果要实现连接池的
机制,还需要自己来管理连接对象。对于网络请求这种底层相对复杂的操作,如果有可用的
其他方案,也没有必要自己去管理连接对象。
d. HttpClient 相比传统 JDK 自带的 HttpURLConnection,它封装了访问 http 的请求头,
参数,内容体,响应等等;它不仅使客户端发送 HTTP 请求变得容易,而且也方便了开发人
员测试接口(基于 Http 协议的),即提高了开发的效率,也方便提高代码的健壮性;另外
高并发大量的请求网络的时候,还是用“连接池”提升吞吐量
 

4 将 Feign 的 Http 客户端工具修改为 HttpClient

 

4.1创建项目

 

 

4.2修改 pom 文件添加 HttpClient 的坐标
 
<!-- 使用Apache HttpClient替换Feign原生httpURLConnection -->
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId> </dependency>
<dependency>
<groupId>com.netflix.feign</groupId>
<artifactId>feign-httpclient</artifactId>
<version>8.17.0</version> </dependency>

 

 

 

 

 

 

4.3修改配置文件开启 HttpClient 的使用

 
#启用 httpclient
feign.httpclient.enabled=true
注意:如果使用 HttpClient 作为 Feign 的客户端工具。那么在定义接口上的注解是需要
注意,如果传递的是一个自定义的对象(对象会使用 json 格式来专递)。需要制定类型。
 

4.4Product-Service

/**
* Product 服务接口* @author Administrator
*
*/
@RequestMapping("/product")
public interface ProductService {
//查询所有商品
@RequestMapping(value="/findAll",method=RequestMethod.GE
T)
public List<Product> findAll();
//根据商品 ID 查询商品
@RequestMapping(value="/getProductById",method=RequestMe
thod.GET)
public Product getProductById(@RequestParam("id") Integer
id);
//添加商品传递多个参数 方式一 :GET 方式
@RequestMapping(value="/add",method=RequestMethod.GET)
public Product addProduct(@RequestParam("id") Integer
id,@RequestParam("name") String name);
//----------------------Httpclient----------------------
------------------------
//添加商品传递多个参数 方式二 :POST 方式
@RequestMapping(value="/add2",method=RequestMethod.POST,
consumes=MediaType.APPLICATION_JSON_VALUE)
public Product addProduct2(@RequestBody Product product);
//使用 HttpClient 工具 添加商品传递多个参数 :基于 GET 方式
@RequestMapping(value="/add3",method=RequestMethod.GET,c
onsumes=MediaType.APPLICATION_JSON_VALUE)
public Product addProduct3(Product product);
}
View Code

 

 
 

六、 查看微服务日志中记录每个接口 URL,状态码和耗时信息

 

1 创建项目

 

2 添加 logback.xml 文件

 

 

3 Logback 的输出日志级别需要时 debug 级别 

 

<!-- 日志输出级别 -->
 <root level="DEBUG"> 
 <appender-ref ref="Stdout" /> 
 <appender-ref ref="RollingFile" /> 
 </root>

4 在启动类中添加一个方法

@EnableFeignClients
@EnableDiscoveryClient
@SpringBootApplication
public class ConsumerApplication {
// NONE:不记录任何信息,默认值
// BASIC:记录请求方法、请求 URL、状态码和用时
// HEADERS:在 BASIC 基础上再记录一些常用信息
// FULL:记录请求和相应的所有信息
@Bean
public Logger.Level getLog(){
return Logger.Level.FULL; }
public static void main(String[] args) {
SpringApplication.run(ConsumerApplication.class, 
args);
} }

七、 配置 Feign 负载均衡请求超时时间

 
Feign 的负载均衡底层用的就是 Ribbon

 

 

1 修改配置文件,设置超时时间
               consumer里面配置
1.1全局配置
#全局配置
# 请求连接的超时时间 默认的时间为 1 秒
ribbon.ConnectTimeout=5000
# 请求处理的超时时间
ribbon.ReadTimeout=5000
1.2根据服务名称进行局部超时配置
#局部配置
# 对所有操作请求都进行重试
ego-product-provider.ribbon.OkToRetryOnAllOperations=true
# 对当前实例的重试次数
ego-product-provider.ribbon.MaxAutoRetries=2
# 切换实例的重试次数
ego-product-providert.ribbon.MaxAutoRetriesNextServer=0
# 请求连接的超时时间
ego-product-provider.ribbon.ConnectTimeout=3000
# 请求处理的超时时间
ego-product-provider.ribbon.ReadTimeout=3000

 

第三章 Hystrix服务容错保护

 

 

 

 

 

 

 

 

 

 

 

1.2修改 pom 文件添加 hystrix 的坐标

<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-hystrix</artifactId>
</dependency>

 

 

1.3修改配置文件

 
spring.application.name=eureka-consumer-ribbon-hystrix
server.port=9010
#设置服务注册中心地址,指向另一个注册中心
eureka.client.serviceUrl.defaultZone=http://user:123456@eur
eka1:8761/eureka/,http://user:123456@eureka2:8761/eureka/

 

 
 

1.4修改启动类开启熔断器

 
@EnableCircuitBreaker //开启熔断器 断路器
@EnableEurekaClient
@SpringBootApplication
public class ConsumerApplication {
public static void main(String[] args) {
SpringApplication.run(ConsumerApplication.class,
args);
}
}

 

1.5在项目中添加 Product 实体类

public class Product {
private Integer id;
private String name;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Product(Integer id, String name) {
super();
this.id = id;
this.name = name;
}
public Product() {
super();
// TODO Auto-generated constructor stub
}
}
View Code

 

1.6修改 ProductService

 
@Service
public class ProductService {
@Autowired
private LoadBalancerClient loadBalancerClient;// ribbon 负
载均衡器
@HystrixCommand(fallbackMethod="fallback")
public List<Product> getUsers() {
// 选择调用的服务的名称
// ServiceInstance 封装了服务的基本信息,如 IP,端口
ServiceInstance si =
this.loadBalancerClient.choose("ego-product-provider");
// 拼接访问服务的 URL
StringBuffer sb = new StringBuffer();
// http://localhost:9001/product/findAll
sb.append("http://").append(si.getHost()).append(":").appen
d(si.getPort()).append("/product/findAll");
System.out.println(sb.toString());
// springMVC RestTemplate
RestTemplate rt = new RestTemplate();
ParameterizedTypeReference<List<Product>> type = new
ParameterizedTypeReference<List<Product>>() {
};
// ResponseEntity:封装了返回值信息
ResponseEntity<List<Product>> response =
rt.exchange(sb.toString(), HttpMethod.GET, null, type);
List<Product> list = response.getBody();
return list;
}
//返回托底数据的方法
public List<Product> fallback(){
List<Product> list = new ArrayList<>();
list.add(new Product(-1, "我是托底数据"));
return list;
}}
View Code

 

1.7以下四种情况将触发 getFallback 调用

 
(1) 方法抛出非 HystrixBadRequestException 异常。
(2) 方法调用超时
(3) 熔断器开启拦截调用
(4) 线程池/队列/信号量是否跑满
 

2 请求缓存

 
Hystrix 为了降低访问服务的频率,支持将一个请求与返回结果做缓存处理。如果再次
请求的 URL 没有变化,那么 Hystrix 不会请求服务,而是直接从缓存中将结果返回。这样可
以大大降低访问服务的压力。
 
Hystrix 自带缓存。有两个缺点:
 
1. 是一个本地缓存。在集群情况下缓存是不能同步的。
2. 不支持第三方缓存容器。Redis,memcache 不支持的。
 
可以使用 spring 的 cache。
 

2.1安装 Redis

 
2.2创建项目

 

 

2.3修改 pom 文件添加 springCache 坐标

 

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.bjsxt</groupId>
    <artifactId>springcloud-eureka-consumer-ribbon-cache</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>
    <name>springcloud-eureka-consumer</name>
    <description>Demo project for Spring Boot</description>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.13.RELEASE</version>
        <relativePath /> <!-- lookup parent from repository -->
    </parent>
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>
    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Dalston.SR5</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-config</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-eureka</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-hystrix</artifactId>
        </dependency>
        <!-- springCache --> <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-redis</artifactId>
    </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

 

2.4在配置文件中配置 redis 链接信息 

spring.application.name=eureka-consumer-ribbon-cache
server.port=9010
#设置服务注册中心地址,指向另一个注册中心
eureka.client.serviceUrl.defaultZone=http://user:123456@eur
eka1:8761/eureka/,http://user:123456@eureka2:8761/eureka/
# Redis
spring.redis.database=0
#Redis 服务器地址
spring.redis.host=192.168.70.139
#Redis 服务器连接端口
spring.redis.port=6379
#Redis 服务器连接密码(默认为空)
spring.redis.password= #连接池最大连接数(负值表示没有限制)
spring.redis.pool.max-active=100
#连接池最大阻塞等待时间(负值表示没有限制)
spring.redis.pool.max-wait=3000
#连接池最大空闭连接数
spring.redis.pool.max-idle=200
#连接汉最小空闲连接数
spring.redis.pool.min-idle=50
#连接超时时间(毫秒)
spring.redis.pool.timeout=600

2.5修改启动类开启缓存

@EnableCaching
@EnableEurekaClient
@SpringBootApplication
public class ConsumerApplication {
public static void main(String[] args) {
SpringApplication.run(ConsumerApplication.class, 
args);
} }

2.6修改 ProductService 

@CacheConfig(cacheNames={"com.bjsxt.ego.product"})
@Service
public class ProductService {
@Autowired
private LoadBalancerClient loadBalancerClient;// ribbon 负
载均衡器
@HystrixCommand(fallbackMethod="fallback")
public List<Product> getUsers() {
// 选择调用的服务的名称
// ServiceInstance 封装了服务的基本信息,如 IP,端口
ServiceInstance si = 
this.loadBalancerClient.choose("ego-product-provider");
// 拼接访问服务的 URL
StringBuffer sb = new StringBuffer();
// http://localhost:9001/product/findAll
sb.append("http://").append(si.getHost()).append(":").appen
d(si.getPort()).append("/product/findAll");
System.out.println(sb.toString());
// springMVC RestTemplate
RestTemplate rt = new RestTemplate();
ParameterizedTypeReference<List<Product>> type = new
ParameterizedTypeReference<List<Product>>() {
};
// ResponseEntity:封装了返回值信息
ResponseEntity<List<Product>> response = 
rt.exchange(sb.toString(), HttpMethod.GET, null, type);
List<Product> list = response.getBody();
return list; }
//返回托底数据的方法
public List<Product> fallback(){
List<Product> list = new ArrayList<>();
list.add(new Product(-1, "我是托底数据"));
return list; }
//根据 ID 查询商品
@Cacheable(key="'product' + #id")
public Product getProductById(Integer id){
System.out.println("=========Get======"+id);
return new Product(id, "新的商品");
}
//根据 ID 删除商品
@CacheEvict(key="'product' + #id")
public void delProductById(Integer id){
System.out.println("=========Del======"+id);
} }
View Code

2.7修改 ProductController

@RestController
public class ProductController {
@Autowired
private ProductService userService;
@RequestMapping("/consumer")
public List<Product> getUsers() {
return this.userService.getUsers();
}
@RequestMapping(value="/get",method=RequestMethod.GET)
public Product get(Integer id){
return this.userService.getProductById(id);
}
@RequestMapping(value="/del",method=RequestMethod.GET)
public void del(Integer id){
this.userService.delProductById(id);
} }
View Code

3 请求合并

 
没合并的请求

 

 

请求合并

 

 

 

 

3.2修改 pom 文件添加 hystrix 坐标

 
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-hystrix</artifactId>
</dependency>

 

 

3.3修改配置文件

spring.application.name=eureka-consumer-ribbon-batch
server.port=9010
#设置服务注册中心地址,指向另一个注册中心
eureka.client.serviceUrl.defaultZone=http://user:123456@eur
eka1:8761/eureka/,http://user:123456@eureka2:8761/eureka/

 

 
 

3.4修改 ProductService

@Service
public class ProductService {
//利用 hystrix 合并请求
@HystrixCollapser(batchMethod = "batchProduct", scope =
com.netflix.hystrix.HystrixCollapser.Scope.GLOBAL,
 
collapserProperties = {
 
//请求时间间隔在 20ms 之内的请求会被合并为一个请求,默认
为 10ms @HystrixProperty(name =
"timerDelayInMilliseconds", value = "20"),
//设置触发批处理执行之前,在批处理中允许的最大请求
数。
@HystrixProperty(name = "maxRequestsInBatch",
value = "200"),
})
//consumer 的 controller 调用的方法 该方法返回值必须要返回
Future 类型
public Future<Product> getProduct(Integer id){
System.out.println("=========="+id+"==========");
return null;
}
@HystrixCommand
//调用 Provider 服务的方法
public List<Product> batchProduct(List<Integer> ids){
for(Integer id:ids){
System.out.println(id);
}
//假设是调用 provider 服务后返回的 list
List<Product> list = new ArrayList<>();
list.add(new Product(1, "电视"));
list.add(new Product(2, "电脑"));
list.add(new Product(3, "冰箱"));
list.add(new Product(4, "手电筒"));
list.add(new Product(100,"list............"));
System.out.println("ddddddddddddddddddddddd");
return list;
}
}
View Code

 

3.5修改 Controller

@RestController
public class ProductController {
@Autowired
private ProductService userService;
@RequestMapping("/consumer")public void getUsers() throws Exception{
Future<Product> p1 = this.userService.getProduct(1);
Future<Product> p2 = this.userService.getProduct(2);
Future<Product> p3 = this.userService.getProduct(3);
System.out.println(p1.get().toString());
System.out.println(p2.get().toString());
System.out.println(p3.get().toString());
}
}
View Code

 

 

4 服务熔断

 

 

 

<dependency> 
<groupId>org.springframework.cloud</groupId> 
<artifactId>spring-cloud-starter-hystrix</artifactId>
</dependency>

4.3修改配置文件

spring.application.name=eureka-consumer-ribbon-breaker
server.port=9010
#设置服务注册中心地址,指向另一个注册中心
eureka.client.serviceUrl.defaultZone=http://user:123456@eur
eka1:8761/eureka/,http://user:123456@eureka2:8761/eureka/

4.4修改启动类 

@EnableCircuitBreaker //开启熔断器 断路器
@EnableEurekaClient
@SpringBootApplication
public class ConsumerApplication {
public static void main(String[] args) {
SpringApplication.run(ConsumerApplication.class, 
args);
} }
View Code

4.5修改 ProductService

@Service
public class ProductService {
@Autowired
private LoadBalancerClient loadBalancerClient;// ribbon 负
载均衡器
@HystrixCommand(fallbackMethod = "fallback",
commandProperties = {
 //默认 20 个;10s 内请求数大于 20 个时就启动熔断器,当请
求符合熔断条件时将触发 getFallback()。
 
@HystrixProperty(name=HystrixPropertiesManager.CIRCUIT_BREAKER
_REQUEST_VOLUME_THRESHOLD, 
value="10"),
 //请求错误率大于 50%时就熔断,然后 for 循环发起请求,
当请求符合熔断条件时将触发 getFallback()。
 
@HystrixProperty(name=HystrixPropertiesManager.CIRCUIT_BREAKER
_ERROR_THRESHOLD_PERCENTAGE, 
value="50"),
 //默认 5 秒;熔断多少秒后去尝试请求
 
@HystrixProperty(name=HystrixPropertiesManager.CIRCUIT_BREAKER
_SLEEP_WINDOW_IN_MILLISECONDS, 
value="5000"),
 })
public List<Product> getUsers(int flag) {
System.out.println(flag);
if(flag == 1){
throw new RuntimeException();
}
// 选择调用的服务的名称
// ServiceInstance 封装了服务的基本信息,如 IP,端口
ServiceInstance si = 
this.loadBalancerClient.choose("ego-product-provider");
// 拼接访问服务的 URL
StringBuffer sb = new StringBuffer();
// http://localhost:9001/product/findAll
sb.append("http://").append(si.getHost()).append(":").appen
d(si.getPort()).append("/product/findAll");
System.out.println(sb.toString());
// springMVC RestTemplate
RestTemplate rt = new RestTemplate();
ParameterizedTypeReference<List<Product>> type = new
ParameterizedTypeReference<List<Product>>() {
};
// ResponseEntity:封装了返回值信息
ResponseEntity<List<Product>> response = 
rt.exchange(sb.toString(), HttpMethod.GET, null, type);
List<Product> list = response.getBody();
return list; }
//返回托底数据的方法
public List<Product> fallback(int flag){
List<Product> list = new ArrayList<>();
list.add(new Product(-1, "我是托底数据"));
return list; } }
View Code

4.6修改 ProductController

 

@RestController
public class ProductController {
@Autowired
private ProductService userService;
@RequestMapping("/consumer")
public List<Product> getUsers(@RequestParam("flag") 
Integer flag){
return this.userService.getUsers(flag);
} }
View Code

 

 

 

 

 

 

 

 

 

 

 

 

5.1.2修改 pom 添加 hystrix 坐标

<dependency>
<groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-hystrix</artifactId>
</dependency>

5.1.3修改配置文件

 

spring.application.name=eureka-consumer-ribbon-threadpool
server.port=9010
#设置服务注册中心地址,指向另一个注册中心
eureka.client.serviceUrl.defaultZone=http://user:123456@eur
eka1:8761/eureka/,http://user:123456@eureka2:8761/eureka/
View Code

5.1.4修改启动类 

@EnableCircuitBreaker //开启熔断器 断路器
@EnableEurekaClient
@SpringBootApplication
public class ConsumerApplication {
public static void main(String[] args) {
SpringApplication.run(ConsumerApplication.class, 
args);
} }
View Code

5.1.5修改 ProductService

package com.hainei.netty_test.test.jvm;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.client.RestTemplate;

import java.util.ArrayList;

@Service
public class ProductService {
    @Autowired
    private LoadBalancerClient loadBalancerClient;
    // ribbon 负载均衡器
    @HystrixCommand(groupKey="ego-product-provider",
            commandKey = "getUsers",
            threadPoolKey="ego-product-provider",
            threadPoolProperties = {
                    @HystrixProperty(name = "coreSize", value =
                            "30"),//线程池大小
                    @HystrixProperty(name = "maxQueueSize",
                            value = "100"),//最大队列长度
                    @HystrixProperty(name =
                            "keepAliveTimeMinutes", value = "2"),//线程存活时间
                    @HystrixProperty(name =
                            "queueSizeRejectionThreshold", value = "15")//拒绝请求
            },
            fallbackMethod = "fallback")
    public List<Product> getUsers() {
        System.out.println(Thread.currentThread().getName());
        // 选择调用的服务的名称
        // ServiceInstance 封装了服务的基本信息,如 IP,端口
        ServiceInstance si =
                this.loadBalancerClient.choose("ego-product-provider");
        // 拼接访问服务的 URL
        StringBuffer sb = new StringBuffer();
        // http://localhost:9001/product/findAll
        sb.append("http://").append(si.getHost()).append(":").appen
        d(si.getPort()).append("/product/findAll");
        System.out.println(sb.toString());
        // springMVC RestTemplate
        RestTemplate rt = new RestTemplate();
        ParameterizedTypeReference<List<Product>> type = new
                ParameterizedTypeReference<List<Product>>() {};
        // ResponseEntity:封装了返回值信息
        ResponseEntity<List<Product>> response =
                rt.exchange(sb.toString(), HttpMethod.GET, null, type);
        List<Product> list = response.getBody();
        return list;
    }


    //返回托底数据的方法
    public List<Product> fallback(){
        System.out.println(Thread.currentThread().getName());
        List<Product> list = new ArrayList<>();
        list.add(new Product(-1, "我是托底数据"));
        return list; }
        
    public void showThread(){
        System.out.println(Thread.currentThread().getName());
    } 
}

 

5.1.6修改 ProductController

@RestController
public class ProductController {
@Autowired
private ProductService userService;
@RequestMapping("/consumer")
public List<Product> getUsers(){
return this.userService.getUsers();
}
@RequestMapping("/consumer1")
public void getUsers1(){
this.userService.showThread();
} }

 

 

 

 

 

5.2.2修改 pom 文件添加 hystrix 的坐标

<dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-hystrix</artifactId>
</dependency>

5.2.3修改配置文件

spring.application.name=eureka-consumer-ribbon-semaphore
server.port=9010
#设置服务注册中心地址,指向另一个注册中心
eureka.client.serviceUrl.defaultZone=http://user:123456@eur
eka1:8761/eureka/,http://user:123456@eureka2:8761/eureka/

 

 

 

5.2.5修改 ProductService

@Service
public class ProductService {
@Autowired
private LoadBalancerClient loadBalancerClient;// ribbon 负
载均衡器
@HystrixCommand(fallbackMethod = "fallback",
commandProperties = {
 
@HystrixProperty(name=HystrixPropertiesManager.EXECUTION_ISOLA
TION_STRATEGY, 
value="SEMAPHORE"),// 信号量 隔离
 @HystrixProperty
(name=HystrixPropertiesManager.EXECUTION_ISOLATION_SEMAPHOR
E_MAX_CONCURRENT_REQUESTS, value="100")//信号量最大并度
 })
public List<Product> getUsers() {
System.out.println(Thread.currentThread().getName());
// 选择调用的服务的名称
// ServiceInstance 封装了服务的基本信息,如 IP,端口
ServiceInstance si = 
this.loadBalancerClient.choose("ego-product-provider");
// 拼接访问服务的 URL
StringBuffer sb = new StringBuffer();
// http://localhost:9001/product/findAll
sb.append("http://").append(si.getHost()).append(":").appen
d(si.getPort()).append("/product/findAll");
System.out.println(sb.toString());
// springMVC RestTemplate
RestTemplate rt = new RestTemplate();
ParameterizedTypeReference<List<Product>> type = new
ParameterizedTypeReference<List<Product>>() {
};
// ResponseEntity:封装了返回值信息
ResponseEntity<List<Product>> response = 
rt.exchange(sb.toString(), HttpMethod.GET, null, type);
List<Product> list = response.getBody();
return list; }
//返回托底数据的方法
public List<Product> fallback(){
System.out.println(Thread.currentThread().getName());
List<Product> list = new ArrayList<>();
list.add(new Product(-1, "我是托底数据"));
return list; }
public void showThread(){
System.out.println(Thread.currentThread().getName());
} }
View Code

 

 

 

 

1.2修改配置文件开启对 hystrix 的支持

 

 

 

 

 

 

 

 

@Component
public class ProductServiceFallbackFactory implements
FallbackFactory<ProductConsumerService> {
Logger logger = 
LoggerFactory.getLogger(ProductServiceFallbackFactory.class);
@Override
public ProductConsumerService create(final Throwable arg0) 
{
return new ProductConsumerService() {
//能够返回托底数据的 fallback 方法
@Override
public List<Product> findAll() {
logger.warn("Fallback Exception: ",arg0);
List<Product> list = new ArrayList<>();
list.add(new Product(-1, "我是托底数据"));
return list;
}
};
} }

2.3修改 ProductConsumerService

 

@FeignClient(name="ego-product-provider",fallbackFactory=Pr
oductServiceFallbackFactory.class)
public interface ProductConsumerService {
 //查询所有商品
@RequestMapping(value="/product/findAll",method=RequestMeth
od.GET)
public List<Product> findAll();
}

五、 可视化的数据监控 Hystrix-dashboard

 
Hystrix-dashboard 是一款针对 Hystrix 进行实时监控的工具,通过 Hystrix
Dashboard 我们可以在直观地看到各 Hystrix Command 的请求响应时间, 请求成功率等数据。

 

 

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 
http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.bjsxt</groupId> <artifactId>springcloud-eureka-consumer-ribbon-dashboard
</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>jar</packaging> <name>springcloud-eureka-consumer</name> <description>Demo project for Spring Boot</description> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.5.13.RELEASE</version> <relativePath /> <!-- lookup parent from repository --> </parent> <properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEn
coding> <project.reporting.outputEncoding>UTF-8</project.reporting.
outputEncoding> <java.version>1.8</java.version>
</properties> <dependencyManagement> <dependencies> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-dependencies</artifactId> <version>Dalston.SR5</version> <type>pom</type> <scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId>
</dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope>
</dependency> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-config</artifactId>
</dependency> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-eureka</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-hystrix</artifactId>
</dependency>
 
 <dependency>
 <groupId>org.springframework.boot</groupId>
 
<artifactId>spring-boot-starter-actuator</artifactId>
 </dependency>
 <dependency>
 <groupId>org.springframework.cloud</groupId>
 
<artifactId>spring-cloud-starter-hystrix-dashboard</artifactId
>
 </dependency>
</dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
View Code

3.修改启动类

 

@EnableCircuitBreaker //开启熔断器 断路器
@EnableEurekaClient
@SpringBootApplication
@EnableHystrix
@EnableHystrixDashboard
public class ConsumerApplication {
public static void main(String[] args) {
SpringApplication.run(ConsumerApplication.class, 
args);
} }

 

 

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 
http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.bjsxt</groupId>
    <artifactId>springcloud-eureka-consumer-ribbon-dashboard</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>
    <name>springcloud-eureka-consumer</name>
    <description>Demo project for Spring Boot</description>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.13.RELEASE</version>
        <relativePath /> <!-- lookup parent from repository -->
    </parent>
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>
    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Dalston.SR5</version> <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency> <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-config</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-eureka</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-hystrix</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>

            <artifactId>spring-cloud-starter-hystrix-dashboard</artifactId
            >
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

 

4.3修改启动类
@EnableCircuitBreaker //开启熔断器 断路器
@EnableEurekaClient
@SpringBootApplication
@EnableHystrix
@EnableHystrixDashboard
public class ConsumerApplication {
public static void main(String[] args) {
SpringApplication.run(ConsumerApplication.class, 
args);
} }

 

 

 

 

 

 

 

 1.1修改 pom 文件添加 turbine 坐标

 

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 
http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.bjsxt</groupId>
    <artifactId>springcloud-eureka-consumer-turbine</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>
    <name>springcloud-eureka-consumer</name>
    <description>Demo project for Spring Boot</description>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.13.RELEASE</version>
        <relativePath /> <!-- lookup parent from repository -->
    </parent>
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>
    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Dalston.SR5</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-config</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-eureka</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-hystrix</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>

            <artifactId>spring-cloud-starter-hystrix-dashboard</artifactId
            >
        </dependency>
        <!-- 添加 turbine 坐标 -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>

            <artifactId>spring-cloud-starter-turbine</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>

            <artifactId>spring-cloud-netflix-turbine</artifactId>
        </dependency>

    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

 

 

 

1.2修改配置文件
spring.application.name=eureka-consumer-hystrix-turbine
server.port=1002
#设置服务注册中心地址,指向另一个注册中心
eureka.client.serviceUrl.defaultZone=http://user:123456@eur
eka1:8761/eureka/,http://user:123456@eureka2:8761/eureka/
#---------------------------------------turbine------------
--------------
#配置 Eureka 中的 serviceId 列表,表明监控哪些服务
turbine.appConfig=eureka-consumer-ribbon-threadpool,springc
loud-eureka-consumer-feign-fallback
#指定聚合哪些集群,多个使用","分割,默认为 default。可使用
http://.../turbine.stream?cluster={clusterConfig 之一}访问
turbine.aggregator.clusterConfig= default
# 1. clusterNameExpression 指定集群名称,默认表达式 appName;此
时:turbine.aggregator.clusterConfig 需要配置想要监控的应用名称;
# 2. 当 clusterNameExpression: default 时,
turbine.aggregator.clusterConfig 可以不写,因为默认就是 default;
# 3. 当 clusterNameExpression: metadata['cluster']时,假设想要
监控的应用配置了 eureka.instance.metadata-map.cluster: ABC,
# 则需要配置,同时 turbine.aggregator.clusterConfig: 
ABC
turbine.clusterNameExpression="default"
View Code
1.3修改启动类
@SpringBootApplication
@EnableTurbine
public class HystrixTurbineApplication {
public static void main(String[] args) {
SpringApplication.run(HystrixTurbineApplication.class,
args);
}
} 
2 使用 Turbine 聚合多个服务
2.1修改被聚合的项目的 pom 文件添加 dashboard 坐标
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.bjsxt</groupId>
    <artifactId>springcloud-eureka-consumer-feign-fallback</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.13.RELEASE</version>
        <relativePath /> <!-- lookup parent from repository -->
    </parent>
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>
    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Dalston.SR5</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-config</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-eureka</artifactId>
        </dependency>
        <!-- 添加 Feign 坐标 -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-feign</artifactId>
        </dependency>
        <!-- 添加 product-service 坐标 -->
        <dependency>
            <groupId>com.bjsxt</groupId>
            <artifactId>springcloud-ego-product-service</artifactId>
            <version>0.0.1-SNAPSHOT</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-hystrix</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>

            <artifactId>spring-cloud-starter-hystrix-dashboard</artifactId
            >
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

 

2.2修改被监控的服务的启动类
@EnableFeignClients
@EnableDiscoveryClient
@SpringBootApplication
@EnableHystrixDashboard
@EnableCircuitBreaker //开启熔断器 断路器
public class ConsumerApplication {
public static void main(String[] args) {
SpringApplication.run(ConsumerApplication.class, 
args);
} }

 

 http://localhost:1002/turbine.stream

 

 

 

 

 

 

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 
http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.bjsxt</groupId>
    <artifactId>springcloud-eureka-consumer-ribbon-dashboard-mq</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>
    <name>springcloud-eureka-consumer</name>
    <description>Demo project for Spring Boot</description>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.13.RELEASE</version>
        <relativePath /> <!-- lookup parent from repository -->
    </parent> <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    <java.version>1.8</java.version>
</properties>
    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Dalston.SR5</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-config</artifactId>
        </dependency>
        <dependency> <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-eureka</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-hystrix</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-hystrix-dashboard</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-netflix-hystrix-stream</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-stream-rabbit</artifactId>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

 

 

 

 

 

 

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 
http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.bjsxt</groupId>
    <artifactId>springcloud-eureka-consumer-turbine-mq</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>
    <name>springcloud-eureka-consumer</name>
    <description>Demo project for Spring Boot</description>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.13.RELEASE</version>
        <relativePath /> <!-- lookup parent from repository -->
    </parent>
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>
    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Dalston.SR5</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-config</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-turbine-stream</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-stream-rabbit</artifactId>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

 

7 修改 Turbine 的配置文件
spring.application.name=eureka-consumer-hystrix-turbine
server.port=1002
#设置服务注册中心地址,指向另一个注册中心
eureka.client.serviceUrl.defaultZone=http://user:123456@eur
eka1:8761/eureka/,http://user:123456@eureka2:8761/eureka/
spring.rabbitmq.host=192.168.70.139
spring.rabbitmq.port=5672
spring.rabbitmq.username=oldlu
spring.rabbitmq.password=123456
spring.rabbitmq.virtualHost=/
View Code
8 修改 Turbine 的启动类
@SpringBootApplication
@EnableTurbineStream
public class HystrixTurbineApplication {
public static void main(String[] args) {
SpringApplication.run(HystrixTurbineApplication.class, 
args);
} }

 

 zipkin-producer

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.1.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>org.example</groupId>
    <artifactId>zipkin-producer-test2</artifactId>
    <version>1.0-SNAPSHOT</version>

    <properties>
        <java.version>1.8</java.version>
        <spring-cloud.version>Greenwich.RC2</spring-cloud.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.4</version>
        </dependency>
        <!-- sleuth配置 -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-sleuth</artifactId>
        </dependency>
        <!-- 引入zipkin  -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-zipkin</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-config</artifactId>
        </dependency>
        <dependency>
            <groupId>io.netty</groupId>
            <artifactId>netty-all</artifactId>
        </dependency>
        <dependency>
            <groupId>commons-beanutils</groupId>
            <artifactId>commons-beanutils</artifactId>
            <version>1.8.1</version>
            <scope>compile</scope>
        </dependency>
        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpclient</artifactId>
            <version>4.3.5</version>
        </dependency>
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger2</artifactId>
            <version>2.4.0</version>
        </dependency>
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger-ui</artifactId>
            <version>2.4.0</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-amqp</artifactId>
        </dependency>
        <dependency>
            <groupId>org.bouncycastle</groupId>
            <artifactId>bcprov-jdk16</artifactId>
            <version>1.46</version>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.68</version>
        </dependency>
        <dependency>
            <groupId>com.github.pagehelper</groupId>
            <artifactId>pagehelper-spring-boot-starter</artifactId>
            <version>1.2.3</version>
        </dependency>
        <dependency>
            <groupId>tk.mybatis</groupId>
            <artifactId>mapper-spring-boot-starter</artifactId>
            <version>1.2.4</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>2.1.0</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.41</version>
        </dependency>
        <dependency>
            <groupId>io.netty</groupId>
            <artifactId>netty-all</artifactId>
        </dependency>
        <dependency>
            <groupId>org.influxdb</groupId>
            <artifactId>influxdb-java</artifactId>
            <version>2.15</version>
        </dependency>
        <dependency>
            <groupId>commons-collections</groupId>
            <artifactId>commons-collections</artifactId>
            <version>3.2.1</version>
            <scope>compile</scope>
        </dependency>
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-lang3</artifactId>
        </dependency>
        <dependency>
            <groupId>com.squareup.okhttp3</groupId>
            <artifactId>okhttp</artifactId>
            <version>3.12.0</version>
        </dependency>
    </dependencies>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>${spring-cloud.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-surefire-plugin</artifactId>
                <configuration>
                    <testFailureIgnore>true</testFailureIgnore>
                </configuration>
            </plugin>
        </plugins>
    </build>

    <repositories>
        <repository>
            <id>spring-milestones</id>
            <name>Spring Milestones</name>
            <url>https://repo.spring.io/milestone</url>
        </repository>
    </repositories>

</project>
View Code

zipkin-consumer

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.1.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.hps</groupId>
    <artifactId>zipkin-consumer</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>zipkin-consumer</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>1.8</java.version>
        <spring-cloud.version>Greenwich.RC2</spring-cloud.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-openfeign</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.4</version>
        </dependency>

        <!-- sleuth配置 -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-sleuth</artifactId>
        </dependency>
        <!-- 引入zipkin  -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-zipkin</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-ribbon</artifactId>
        </dependency>
        <dependency>
            <groupId>io.micrometer</groupId>
            <artifactId>micrometer-core</artifactId>
        </dependency>
    </dependencies>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>${spring-cloud.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

    <repositories>
        <repository>
            <id>spring-milestones</id>
            <name>Spring Milestones</name>
            <url>https://repo.spring.io/milestone</url>
        </repository>
    </repositories>

</project>
View Code

 

1111

posted @ 2019-12-31 15:47  wq9  阅读(313)  评论(0编辑  收藏  举报