（八）SpringCloud整合zookeeper
支付服务注册进zookeeper
zookeeper是一个分布式协调工具，可以实现注册中心功能
环境搭建
先确认两台机器是否能够ping通，关闭Linux服务器防火墙
1.本地ping云服务器公网ip
C:\Users\Lenovo>ping 81.68.160.85
正在 Ping 81.68.160.85 具有 32 字节的数据:
来自 81.68.160.85 的回复: 字节=32 时间=32ms TTL=49
来自 81.68.160.85 的回复: 字节=32 时间=32ms TTL=49
来自 81.68.160.85 的回复: 字节=32 时间=32ms TTL=49
来自 81.68.160.85 的回复: 字节=32 时间=35ms TTL=49
81.68.160.85 的 Ping 统计信息:
数据包: 已发送 = 4，已接收 = 4，丢失 = 0 (0% 丢失)，
往返行程的估计时间(以毫秒为单位):
最短 = 32ms，最长 = 35ms，平均 = 32ms
2.云服务器ping本地内网地址
[root@VM-4-15-centos bin]# ping -c 4 192.168.31.244
PING 192.168.31.244 (192.168.31.244) 56(84) bytes of data.
--- 192.168.31.244 ping statistics ---
4 packets transmitted, 0 received, 100% packet loss, time 2999ms
服务提供者
1.新建名为cloud-provider-payment8004的Maven工程
2.POM
<?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">
<parent>
<artifactId>cloud2021</artifactId>
<groupId>com.ylc.cloud</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>cloud-provider-payment8004</artifactId>
<properties>
<maven.compiler.source>8</maven.compiler.source>
<maven.compiler.target>8</maven.compiler.target>
</properties>
<dependencies>
<!-- SpringBoot整合Web组件 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency><!-- 引入自己定义的api通用包，可以使用Payment支付Entity -->
<groupId>com.ylc.cloud</groupId>
<artifactId>cloud-api-commons</artifactId>
<version>${project.version}</version>
</dependency>
<!-- SpringBoot整合zookeeper客户端 -->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-zookeeper-discovery</artifactId>
<!--先排除自带的zookeeper3.5.3 防止与3.4.9起冲突-->
<exclusions>
<exclusion>
<groupId>org.apache.zookeeper</groupId>
<artifactId>zookeeper</artifactId>
</exclusion>
</exclusions>
</dependency>
<!--添加zookeeper3.5.7版本-->
<dependency>
<groupId>org.apache.zookeeper</groupId>
<artifactId>zookeeper</artifactId>
<version>3.5.7</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
</project>
3.YML
8004表示注册到zookeeper服务器的支付服务提供者端口号
server:
port: 8004
#服务别名----注册zookeeper到注册中心名称
spring:
application:
name: cloud-provider-payment
cloud:
zookeeper:
connect-string: 127.0.0.1:2181 # 192.168.111.144:2181 #
4.主启动类
package com.ylc.cloud;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
@SpringBootApplication
@EnableDiscoveryClient//该注解用于向使用consul或者zookeeper作为注册中心时注册服务
public class PaymentMain8004 {
public static void main(String[] args) {
SpringApplication.run(PaymentMain8004.class, args);
}
}
5.controller
package com.ylc.cloud.controller;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import java.util.UUID;
@RestController
@Slf4j
public class PaymentController
{
@Value("${server.port}")
private String serverPort;
@RequestMapping(value = "/payment/zk")
public String paymentzk()
{
return "springcloud with zookeeper: "+serverPort+"\t"+ UUID.randomUUID().toString();
}
}
6.启动8004注册进zookeeper（要先启动zookeeper的server）
SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/D:/%e8%bd%af%e4%bb%b6/maven-repository/ch/qos/logback/logback-classic/1.2.3/logback-classic-1.2.3.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/D:/%e8%bd%af%e4%bb%b6/maven-repository/org/slf4j/slf4j-log4j12/1.7.29/slf4j-log4j12-1.7.29.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
SLF4J: Actual binding is of type [ch.qos.logback.classic.util.ContextSelectorStaticBinder]
原因是Zookeeper中安装了slf4j发生了冲突，在导入的时候排除就好了
<dependency>
<groupId>org.apache.zookeeper</groupId>
<artifactId>zookeeper</artifactId>
<version>3.5.7</version>
<exclusions>
<exclusion>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
</exclusion>
<exclusion>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
</exclusion>
</exclusions>
</dependency>
使用外网访问阿里云服务器ZooKeeper_Life is for sharing的博客-CSDN博客
在连通服务器上zookeeper的时候，注意关闭服务器防火墙
还要开放服务器的安全组端口，不然连不上
还要在zookeeper配置文件zoo.cfg中，添加
7.测试
-
验证测试：浏览器 - http://localhost:8004/payment/zk
-
验证测试2 ：接着用zookeeper客户端操作
启动zookeeper客户端
[zk: localhost:2181(CONNECTED) 0] ls /
[services, zookeeper]
[zk: localhost:2181(CONNECTED) 1] ls /services
[cloud-provider-payment]
[zk: localhost:2181(CONNECTED) 2] ls /services/cloud-provider-payment
[3e41dc65-cff7-4c86-97fb-e4eb1c11e12d]
[zk: localhost:2181(CONNECTED) 4] get /services/cloud-provider-payment/3e41dc65-cff7-4c86-97fb-e4eb1c11e12d
{"name":"cloud-provider-payment","id":"3e41dc65-cff7-4c86-97fb-e4eb1c11e12d","address":"DESKTOP-NV7QOIN","port":8004,"sslPort":null,"payload":{"@class":"org.springframework.cloud.zookeeper.discovery.ZookeeperInstance","id":"application-1","name":"cloud-provider-payment","metadata":{}},"registrationTimeUTC":1631507714643,"serviceType":"DYNAMIC","uriSpec":{"parts":[{"value":"scheme","variable":true},{"value":"://","variable":false},{"value":"address","variable":true},{"value":":","variable":false},{"value":"port","variable":true}]}}
json格式化get /services/cloud-provider-payment/3e41dc65-cff7-4c86-97fb-e4eb1c11e12d结果
{
"name":"cloud-provider-payment",
"id":"3e41dc65-cff7-4c86-97fb-e4eb1c11e12d",
"address":"DESKTOP-NV7QOIN",
"port":8004,
"sslPort":null,
"payload":{
"@class":"org.springframework.cloud.zookeeper.discovery.ZookeeperInstance",
"id":"application-1",
"name":"cloud-provider-payment",
"metadata":{
}
},
"registrationTimeUTC":1631507714643,
"serviceType":"DYNAMIC",
"uriSpec":{
"parts":[
{
"value":"scheme",
"variable":true
},
{
"value":"://",
"variable":false
},
{
"value":"address",
"variable":true
},
{
"value":":",
"variable":false
},
{
"value":"port",
"variable":true
}
]
}
}
临时还是持久节点
ZooKeeper的服务节点是临时节点，服务注销以后一段时间后（心跳时间）会消失
订单服务注册进zookeeper
1.新建cloud-consumerzk-order80
2.POM
<?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">
<parent>
<artifactId>cloud2021</artifactId>
<groupId>com.ylc.cloud</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>cloud-consumerzk-order80</artifactId>
<properties>
<maven.compiler.source>8</maven.compiler.source>
<maven.compiler.target>8</maven.compiler.target>
</properties>
<dependencies>
<!-- SpringBoot整合Web组件 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!-- SpringBoot整合zookeeper客户端 -->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-zookeeper-discovery</artifactId>
<!--先排除自带的zookeeper-->
<exclusions>
<exclusion>
<groupId>org.apache.zookeeper</groupId>
<artifactId>zookeeper</artifactId>
</exclusion>
</exclusions>
</dependency>
<!--添加zookeeper3.4.9版本-->
<dependency>
<groupId>org.apache.zookeeper</groupId>
<artifactId>zookeeper</artifactId>
<version>3.5.7</version>
<exclusions>
<exclusion>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
</exclusion>
<exclusion>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
</project>
3.YML
server:
port: 80
#服务别名----注册zookeeper到注册中心名称
spring:
application:
name: cloud-consumer-order
cloud:
zookeeper:
connect-string: 81.68.160.85:2181
4.主启动类
package com.ylc.cloud;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
@SpringBootApplication
@EnableDiscoveryClient
public class OrderZKMain80 {
public static void main(String[] args) {
SpringApplication.run(OrderZKMain80.class, args);
}
}
5.业务类
config
package com.ylc.cloud.config;
import org.springframework.cloud.client.loadbalancer.LoadBalanced;
import org.springframework.context.annotation.Bean;
import org.springframework.web.client.RestTemplate;
@Configuration
public class ApplicationContextConfig {
@Bean
@LoadBalanced
public RestTemplate getRestTemplate()
{
return new RestTemplate();
}
}
controller
package com.ylc.cloud.controller;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;
import javax.annotation.Resource;
@RestController
@Slf4j
public class OrderZKController
{
public static final String INVOKE_URL = "http://cloud-provider-payment";
@Resource
private RestTemplate restTemplate;
@GetMapping(value = "/consumer/payment/zk")
public String paymentInfo()
{
String result = restTemplate.getForObject(INVOKE_URL+"/payment/zk",String.class);
return result;
}
}
6.验证测试
运行ZooKeeper服务端，cloud-consumerzk-order80，cloud-provider-payment8004
[root@VM-4-15-centos apache-zookeeper-3.5.7-bin]# bin/zkCli.sh
[zk: localhost:2181(CONNECTED) 0] ls /
[services, zookeeper]
[zk: localhost:2181(CONNECTED) 1] ls /services
[cloud-consumer-order, cloud-provider-payment]
7.访问测试地址 http://localhost/consumer/payment/zk
