nacos-服务发现与配置管理

nacos的服务注册与配置管理

1、创建nacos-discovery父工程

pom.xml如下

<?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.huhu.nacos</groupId>
      <artifactId>nacos‐discovery</artifactId>
      <version>1.0‐SNAPSHOT</version>
      <modules>
        <module>nacos-restful-provider</module>
        <module>nacos-restful-consumer</module>
      </modules>
      <packaging>pom</packaging>
      <dependencyManagement>
        <dependencies>
          <dependency>
            <groupId>org.springframework.boot</groupId>
			<artifactId>spring‐boot‐dependencies</artifactId>
			<version>2.1.3.RELEASE</version>
			<type>pom</type>
			<scope>import</scope>
		  </dependency>
	   </dependencies>
	</dependencyManagement>
</project>

2、服务生产者ServiceB

创建服务提供者 nacos-restful-provider。
pom.xml如下：

<?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>nacos‐discovery</artifactId>
   <groupId>com.huhu.nacos</groupId>
   <version>1.0‐SNAPSHOT</version>
</parent>
   <modelVersion>4.0.0</modelVersion>
   <artifactId>nacos‐restful‐provider</artifactId>
<dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
            <version>2.1.6.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
            <version>5.1.6.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-autoconfigure</artifactId>
            <version>2.1.6.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.yaml</groupId>
            <artifactId>snakeyaml</artifactId>
            <version>1.23</version>
        </dependency>
</dependencies>
</project>

Service B是服务的生产方，暴露/service服务地址，实现代码如下：
1、创建Controller

package com.huhu.nacos.provider.controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class RestProviderController {
	@GetMapping(value = "/service") //暴露服务
	public String service(){
		System.out.println("provider invoke");
		return "provider invoke";
		}
}

2、创建启动类

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

3、创建application.yml，内容如下：

server:
    port: 56010

3、服务消费者Service A

创建nacos-restful-consumer 服务消费者
pom.xml如下：

<?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>nacos‐discovery</artifactId>
		<groupId>com.huhu.nacos</groupId>
		<version>1.0‐SNAPSHOT</version>
</parent>
		<modelVersion>4.0.0</modelVersion>
		<artifactId>nacos‐restful‐consumer</artifactId>
		<dependencies>
			<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring‐boot‐starter‐web</artifactId>
			</dependency>
		</dependencies>
</project>

实现代码：
1、创建controller

package com.huhu.nacos.consumer.Controller;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

@RestController
public class RestConsumerController {
    //要进行远程调用需要指定提供方的Ip+端口
    @Value("${provider.address}") //获取提供方yml文件中的address
    private String providerAddress;

    @GetMapping(value = "/service")
    private String service(){
        RestTemplate restTemplate =new RestTemplate();
        String result = restTemplate.getForObject("http://" + providerAddress + "/service", String.class);
        return "consumer invoke"+" "+result;

    }
}

2、创建启动类

package com.huhu.nacos.consumer;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

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

配置文件：
创建application.yml，内容如下：

server:
  port: 56020
provider:
  address: 127.0.0.1:56010  //服务提供方地址

启动SpringRestConsumerBootstrapl启动类
访问http://127.0.0.1:56020/service，输出以下内容：

测试使用nacos消费方远程调用提供方成功