SpringCloud分布式配置中心的搭建

1.配置中心服务端的搭建

1. 创建模块cloud-config-center3344
2. 添加坐标

<!--这是分布式的配置中心-->
<dependencies>
    <!--需要引入配置中心的坐标-->
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-config-server</artifactId>
    </dependency>
    <!--引入eureka的客户端-->
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
    </dependency>

</dependencies>

3. 编写application.yml

server:
  port: 3344
spring:
  application:
    name: config-center
  cloud:
    config:
      server:
        git:
          uri: 你的github地址
          search-paths:
            - springcloud-config
          skip-ssl-validation: true
      label: master
eureka:
  client:
    service-url:
      defaultZone: http://eureka7001.com:7001/eureka/
  instance:
    prefer-ip-address: true
    instance-id: config-center

4. 编写启动类

@SpringBootApplication
@EnableEurekaClient
@EnableConfigServer
public class ConfigCenterMain3344 {
    public static void main(String[] args) {
        SpringApplication.run(ConfigCenterMain3344.class,args) ;
    }
}

5. 测试

/{application}/{profile}[/{label}]
/{application}-{profile}.yml
/{label}/{application}-{profile}.yml
/{application}-{profile}.properties
/{label}/{application}-{profile}.properties

2.配置中心客户端的搭建

1. 创建模块cloud-config-client-3355
2. 引入坐标

<dependencies>
    <!--导入spring-boot的web模块的支持-->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <!--导入spring-boot的测试模块-->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-actuator</artifactId>
    </dependency>
    <!--引入eureka的客户端-->
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
    </dependency>
    <!--客户端的配置信息-->
    <!--读取bootstrap配置文件-->
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-config</artifactId>
    </dependency>
</dependencies>

3. 编写bootstrap.yml配置文件

server:
  port: 3355
spring:
  application:
    name: config-client
  cloud:
    config:
      uri: http://config-3344.com:3344
      label: master
      profile: dev
      name: config
eureka:
  client:
    service-url:
      defaultZone: http://eureka7001.com:7001/eureka/
  instance:
    prefer-ip-address: true
    instance-id: config-client3355
management:
  endpoints:
    web:
      exposure:
        include: "*" # 暴露当前端口共别人调用

4. 编写controller

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

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

5. 编写主配置类

@SpringBootApplication
@EnableEurekaClient
public class ConfigClientMain3355 {
    public static void main(String[] args) {
        SpringApplication.run(ConfigClientMain3355.class,args) ;
    }
}

6. 测试

3.手动刷新

问题描述：当手动修改了github上面的配置文件之后，发现服务端，可以感知到配置的变化，客户端不能实现动态的刷新的问题？

客户端解决方案如下：

1. 添加坐标

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

2. 修改bootstrap的配置，添加暴露端口

management:
  endpoints:
    web:
      exposure:
        include: "*" # 暴露当前端口共别人调用

3. 在控制器上面添加@RefreshScope

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

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

4. 最后手动的发送一个post请求

curl -X POST "http://localhost:3355/actuator/refresh"

5. 测试