SpringBoot使用Nacos服务发现与配置《微服务》

1.nacos简介

Nacos 致力于帮助您发现、配置和管理微服务。Nacos 提供了一组简单易用的特性集，帮助您快速实现动态服务发现、服务配置、服务元数据及流量管理。

Nacos 帮助您更敏捷和容易地构建、交付和管理微服务平台。 Nacos 是构建以“服务”为中心的现代应用架构 (例如微服务范式、云原生范式) 的服务基础设施。

2. pom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">
    <parent>
        <artifactId>cloud2020</artifactId>
        <groupId>com.lys.springcloud</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>cloud-provider-payment8001</artifactId>


    <dependencies>
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
            <!--<version>2.2.1.RELEASE</version>-->
        </dependency>
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
        </dependency>
        <!--  web组件      -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <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>com.lys.springcloud</groupId>
            <artifactId>cloud2020</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>
</project>

3.bootrap.yml 配置(bootrap.yml优先于application.yml)

server:
  port: 8001

nacos:
  config:
    bootstrap:
      log:
        enable: true

spring:
  application:
    name: nacos-payment-provider
  cloud:
    nacos:
      discovery:
        server-addr: 10.0.1.1:8848 #Nacos作为服务注册中心地址
      config:
        server-addr: 10.0.1.1:8848 #Nacos作为配置中心地址
        file-extension: yaml #指定yaml格式的配置
        group: DEFAULT_GROUP #指定在哪个group里
        namespace: f3e27ebf-0294-4ca9-b2a3-f2a327433c0e
# {spring.application.name}-{spring.profiles.active}.{spring.cloud.nacos.config.file-extension}
# 实际访问的配置nacos-payment-provider.yaml

3.NacosProviderApplication

package com.lys;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;

/**
 * @Auther: liuysh
 * @Date: 2021/2/27 17:51
 * @Description:
 */
@SpringBootApplication
@EnableDiscoveryClient
public class NacosProviderApplication {
    public static void main(String[] args) {
        SpringApplication.run(NacosProviderApplication.class, args);
    }

    @RestController
    class EchoController {
      @GetMapping(value = "/payment/get/{id}")
       public String echo(@PathVariable String id) {
               return "Hello Nacos Discovery " + id;
    }
    }
}

4.效果

5.配置中心

package com.lys.controller;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.cloud.context.config.annotation.RefreshScope;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

/**
 * @Auther: liuysh
 * @Date: 2021/4/12 15:54
 * @Description:
 */
@RestController
@RefreshScope
public class ConfigController {
    @Value("${info}")
    private String configInfo;

    @GetMapping("/info")
    public String getConfigInfo() {
        return configInfo;
    }
}

6.调用

源码请私信