一、下载安装nacos

略。

二、搭建服务提供者

  1、新建一个工程(test-springcloud),导入Spring Cloud Alibaba依赖

<?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.sdkj</groupId>
    <artifactId>cloud-alibaba-parent</artifactId>
    <version>1.0-SNAPSHOT</version>
    <modules>
        <module>cloud-provider-alibaba-payment9001</module>
        <module>cloud-consumer-alibaba-order7001</module>
        <module>cloud-provider-alibaba-payment9002</module>
        <module>cloud-config-nacos-client8901</module>
    </modules>
    <packaging>pom</packaging>

    <properties>
        <maven.compiler.source>8</maven.compiler.source>
        <maven.compiler.target>8</maven.compiler.target>
    </properties>

    <!--boot父版本依赖-->
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.3.5.RELEASE</version>
    </parent>
    <!--cloud管理依赖-->
    <dependencyManagement>
        <dependencies>
            <!-- https://mvnrepository.com/artifact/org.springframework.cloud/spring-cloud-dependencies -->
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Hoxton.RELEASE</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <!--alibaba-->
            <dependency>
                <groupId>com.alibaba.cloud</groupId>
                <artifactId>spring-cloud-alibaba-dependencies</artifactId>
                <version>2.1.0.RELEASE</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <dependencies>
        <!-- spring boot依赖 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <!--优雅停服依赖包-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>

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

</project>

 

  2、新建一个模块服务提供者(springcloud-provider-alibaba-payment9001),引入Nacos依赖

<dependencies>

        <!--nacos-->
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
        </dependency>

    </dependencies>

 

  3、新建一个配置文件appliction.yml

# 端口
server:
  port: 9001

spring:
  application:
    name: nacos-payment-provider
  cloud:
    nacos:
      discovery:
        server-addr: 192.168.186.128:8848

 

  4、新建启动类

复制代码
1 @EnableDiscoveryClient
2 @SpringBootApplication
3 public class PaymentMain9001 {
4     public static void main(String[] args) {
5         SpringApplication.run(PaymentMain9001.class, args);
6     }
7 }
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  5、新建一个Controller,如下:

复制代码
 1 @RestController
 2 public class PaymentController {
 3 
 4     @Value("${server.port}")
 5     private String serverPort;
 6 
 7     @GetMapping(value = "/payment/nacos/{id}")
 8     public String getPayment(@PathVariable("id") Integer id) {
 9         return "nacos registry, serverPort: " + serverPort + "\t id: " + id;
10     }
11 }
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  6、测试

    1)启动Nacos服务,启动服务提供者模块

    2)访问地址:http://localhost:9001/payment/nacos/11,正常获取内容

      

    3)访问Nacos的Web界面,查看服务列表菜单

      

      可以看到服务列表中,有nacos-payment-provider服务

三、搭建服务消费者

  1、在父工程(test-springcloud)中,新建服务消费者模块(springcloud-consumer-alibaba-order7001)

  2、引入nacos依赖,同上

    <dependencies>

        <!--nacos-->
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
        </dependency>

    </dependencies>

 

  3、编写配置文件,如下:

# 端口
server:
  port: 7001

spring:
  application:
    name: nacos-order-consumer
  cloud:
    nacos:
      discovery:
        server-addr: 192.168.186.128:8848

 

  4、编写启动类,如下:

复制代码
1 @EnableDiscoveryClient
2 @SpringBootApplication
3 public class OrderMain7001 {
4     public static void main(String[] args) {
5         SpringApplication.run(OrderMain7001.class, args);
6     }
7 }
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  5、编辑配置类,代码如下,注入RestTemplate

复制代码
 1 @Configuration
 2 public class AppConfig {
 3 
 4     @Bean
 5     @LoadBalanced
 6     public RestTemplate restTemplate(){
 7         return new RestTemplate();
 8     }
 9 
10 }
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   6、编写一个Controller用于访问

复制代码
@RestController
public class OrderController {

    @Autowired
    private RestTemplate restTemplate;

    @GetMapping(value = "/consumer/payment/nacos/{id}")
    public String paymentInfo(@PathVariable("id") Integer id) {
        return restTemplate.getForObject("http://nacos-payment-provider" + "/payment/nacos/" + id, String.class);
    }

}
复制代码

  7、测试

    1)启动Nacos服务,启动服务提供者模块,启动服务消费者模块

    2)访问地址:http://localhost:9001/payment/nacos/11,正常获取内容

       访问地址:http://localhost:7001/consumer/payment/nacos/11,正常获取内容

      

    3)访问Nacos的Web界面,查看服务列表菜单,分别可以看到一个nacos-payment-provider服务,一个nacos-order-consumer服务

    4)在搭建一个(springcloud-provider-alibaba-payment9002)服务提供者模块,与9001模块内容相同,只有端口的区别

    5)启动9002模块,使用地址:http://localhost:7001/consumer/payment/nacos/11,访问获取内容

      获取的内容,是轮流从9001与9002这两个节点上获取

    6)访问Nacos的Web界面,查看服务列表菜单