40、微服务 配置中心 SpringCloud Config 和消息总线 Bus

1、创建分布式配置中心服务端 cloud-config-center3344

编写pom.xml依赖

<dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-config-server</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>
        <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-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

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

        <dependency>
            <groupId>com.atguigu.springcloud</groupId>
            <artifactId>cloud-api-commons</artifactId>
            <version>${project.version}</version>
        </dependency>

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>
    </dependencies>

首先在gitee或者 gitHub上创建一个专门放配置的仓库：//gitee.com/MyShopPlus/spring-cloud-config.git 创建一个目录respo,里面config-dev.yml

config:
  info: cloud-config-client version=1

编写application.yml配置文件

spring:
  application:
    name: cloud-config-center
  cloud:
    config:
      label: master
      server:
        git:
          uri: https://gitee.com/MyShopPlus/spring-cloud-config.git
          search-paths: respo
          username: 13652332424
          password: shun2302768

server:
  port: 3344

eureka:
  client:
    serviceUrl:
      defaultZone: http://eureka7001.com:7001/eureka,http://eureka7002.com:7002/eureka

编写主启动类

@SpringBootApplication
@EnableDiscoveryClient
@EnableConfigServer
public class ConfigCenterApplication3344 {

    public static void main(String[] args) {
        SpringApplication.run(ConfigCenterApplication3344.class,args);
    }
}

测试访问：http://localhost:3344/config-dev.yml

2、创建配置中心的客户端 cloud-config-client3355

编写pom.xml 添加依赖

<dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-config</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>
        <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-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

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

        <dependency>
            <groupId>com.atguigu.springcloud</groupId>
            <artifactId>cloud-api-commons</artifactId>
            <version>${project.version}</version>
        </dependency>

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>
    </dependencies>

编写 bootstrap.yml 配置文件

server:
  port: 3355
spring:
  application:
    name: cloud-config-client3355
  cloud:
    config:
      uri: http://localhost:3344 #服务端的访问地址
      name: config  #gie上的配置文件的名字：config-dev.yml
      label: master #哪个分支下的
      profile: dev  #哪个环境：比如：dev,sit,prod

eureka:
  client:
    serviceUrl:
      defaultZone: http://eureka7001.com:7001/eureka,http://eureka7002.com:7002/eureka

编写主启动类

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

编写controller 读取配置中心上的配置文件（config-dev.yml）里面的内容

@RestController
public class ConfigClientController {
    @Value("${config.info}")
    private String configInfo;

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

测试地址：http://localhost:3355/config/info