SpringCloud 集成 nacos-config

1.下载安装Nacos

注：本文是Windows环境 ，版本是nacos-server-1.4.0

下载链接:  https://github.com/alibaba/nacos/releases

解压缩之后得到文件夹，在该目录下单机模式启动，启动命令 startup.cmd  -m standalone

本地启动成功后访问http://127.0.0.1:8848/nacos，用户名:nacos   密码: nacos

 

2.准备代码环境

     2.1引入pom文件依赖

<?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>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.3.RELEASE</version>
        <relativePath/>
    </parent>

    <groupId>org.example</groupId>
    <artifactId>nacos-config</artifactId>
    <version>1.0-SNAPSHOT</version>

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

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

        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
        </dependency>
    </dependencies>

    <dependencyManagement>
        <dependencies>
            <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>

</project>

    2.2配置文件（由于本文是集成的nacos-cofig，注意是bootstrap.yml,不是application.yml）

server:
  port: 8040
spring:
  application:
    name: nacos-config-demo
  cloud:
    nacos:
      discovery:
        server-addr: 127.0.0.1:8848
      config:
        server-addr: 127.0.0.1:8848
        file-extension: yaml
        prefix: nacos-config
      profiles:
        active: dev

  2.3 nacos管理界面新建配置

 

注(DataId格式为: ${prefix}-${spring.profiles.active}.${file-extension} )

 

 2.4 JAVA代码使用

package com.demo;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.cloud.context.config.annotation.RefreshScope;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@SpringBootApplication
@EnableDiscoveryClient
@RestController
@RefreshScope
public class MainApplication {

    @Value("${nacos.config:test-local}")
    private String config;

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

    @RequestMapping("/test")
    public String test(){
        return config;
    }

}

 请求测试