SpringCloud Config Client 配置中心客户端工程

淡淡的烟草味﹌ 2022-05-16 06:25 134阅读 0赞

# SpringCloud Config Client 配置中心客户端工程 #

## 概述 ##

该工程是配置客户端工程，用于消费由配置服务端提供的配置。

## 实现步骤分析 ##

### 引入相关依赖依赖 ###

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

### 创建bootstrap.yml文件 ###

spring:
      cloud:
        config:
          name: application   # git服务器上配置文件名称，无后缀
          profile: dev
          label: master
          uri: http://localhost:7100   # config server端地址

注意: `bootstrap.yml`文件加载优先级是最高的，这个文件中的配置将会覆盖`application.yml`中的配置，所以用`bootstrap.yml`来加载服务端配置，`application.yml`这个文件可以用来配置私有的配置。

### 创建springcloud-config-client启动类 ###

import org.slf4j.Logger;
    import org.slf4j.LoggerFactory;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.boot.CommandLineRunner;
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.core.env.Environment;
    
    @SpringBootApplication
    public class Application implements CommandLineRunner { 
    
        private static final Logger log = LoggerFactory.getLogger(Application.class);
    
        @Autowired Environment env; // 用于读取配置文件信息
    
        public static void main(String[] args) throws Exception {
            SpringApplication.run(Application.class, args);
        }
    
        @Override
        public void run(String... args) throws Exception {
            String server_port = env.getProperty("server.port");
            String spring_application_name = env.getProperty("spring.application.name");
    
            log.info("----------------- 读取配置文件信息如下 -----------------");
            log.info("----------------- server.port:" + server_port + " -----------------");
            log.info("----------------- spring.application.name:" + spring_application_name + " -----------------");
    
        }
    
    }

### 测试 ###

优先启动配置服务端工程，即`springcloud-config-server`, 其次启动`springcloud-config-client`这个工程。  
观察控制日志输出：

2018-08-16 16:05:14.288  INFO 2267 --- [           main] c.t.s.config.client.Application          : ----------------- 读取配置文件信息如下 -----------------
    2018-08-16 16:05:14.288  INFO 2267 --- [           main] c.t.s.config.client.Application          : ----------------- server.port:7100 -----------------
    2018-08-16 16:05:14.288  INFO 2267 --- [           main] c.t.s.config.client.Application          : ----------------- spring.application.name:springcloud-config-server -----------------

源代码地址：  
[https://github.com/myNameIssls/springcloud-study/tree/master/springcloud-config-client][https_github.com_myNameIssls_springcloud-study_tree_master_springcloud-config-client]

参考链接：  
[http://cloud.spring.io/spring-cloud-static/Finchley.SR1/multi/multi\_\_quick\_start.html][http_cloud.spring.io_spring-cloud-static_Finchley.SR1_multi_multi_quick_start.html]  
[http://cloud.spring.io/spring-cloud-static/Finchley.SR1/multi/multi\_\_spring\_cloud\_config\_client.html][http_cloud.spring.io_spring-cloud-static_Finchley.SR1_multi_multi_spring_cloud_config_client.html]  
[https://www.cnblogs.com/lfalex0831/p/9206605.html][https_www.cnblogs.com_lfalex0831_p_9206605.html]

[https_github.com_myNameIssls_springcloud-study_tree_master_springcloud-config-client]: https://github.com/myNameIssls/springcloud-study/tree/master/springcloud-config-client
[http_cloud.spring.io_spring-cloud-static_Finchley.SR1_multi_multi_quick_start.html]: http://cloud.spring.io/spring-cloud-static/Finchley.SR1/multi/multi__quick_start.html
[http_cloud.spring.io_spring-cloud-static_Finchley.SR1_multi_multi_spring_cloud_config_client.html]: http://cloud.spring.io/spring-cloud-static/Finchley.SR1/multi/multi__spring_cloud_config_client.html
[https_www.cnblogs.com_lfalex0831_p_9206605.html]: https://www.cnblogs.com/lfalex0831/p/9206605.html