Spring Cloud系列：使用 Nacos 实现配置管理和服务发现

版本说明
创建项目

版本说明

IDEA：2021.3

Maven：3.6.3

Jdk：17

Spring-Boot：2.6.13

Spring-Cloud：2021.0.5

Spring-Cloud-Alibaba：2021.0.5.0

创建项目

1、选择Spring Initalizr

2、选择需要安装的版本和依赖

3、修改pom文件

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.mcode.api</groupId>
    <artifactId>spring-cloud-nacos-demo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>spring-cloud-nacos-demo</name>
    <description>spring-cloud-nacos-demo</description>
    <properties>
        <java.version>17</java.version>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <spring-boot.version>2.6.13</spring-boot.version>
        <spring-cloud-alibaba.version>2021.0.5.0</spring-cloud-alibaba.version>
        <spring.cloud.version>2021.0.5</spring.cloud.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>

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

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-bootstrap</artifactId>
        </dependency>

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

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>
    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-dependencies</artifactId>
                <version>${spring-boot.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <dependency>
                <groupId>com.alibaba.cloud</groupId>
                <artifactId>spring-cloud-alibaba-dependencies</artifactId>
                <version>${spring-cloud-alibaba.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>${spring.cloud.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

4、配置bootstrap.yaml

spring:
  cloud:
    nacos:
      server-addr: 127.0.0.1:8848
      username: nacos
      password: nacos
      discovery:
        namespace: public
      config:
        file-extension: yaml
    loadbalancer:
      nacos:
        enabled: true
  application:
    name: 'nacos-service'
  profiles:
    active: dev

5、添加启动类

package com.mcode.api;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;

/**
 * ClassName: NacosApplication
 * Package: com.mcode.api
 * Description:
 *
 * @Author: robin
 * @Create: 2023/8/6 - 10:45 PM
 * @Version: v1.0
 */
@SpringBootApplication
@EnableDiscoveryClient
public class NacosApplication {
    public static void main(String[] args) {
        SpringApplication.run(NacosApplication.class,args);
    }
}

6、添加测试控制器

package com.mcode.api.controller;

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

/**
 * ClassName: NacosController
 * Package: com.mcode.api.controller
 * Description:
 *
 * @Author: robin
 * @Create: 2023/8/6 - 10:42 PM
 * @Version: v1.0
 */
@RestController
@RefreshScope
public class NacosController {

    @Value("${jwtKey}")
    private String jwtKey;

    @RequestMapping("testConfig")
    public String testConfig(){
        return jwtKey;
    }
}