Config配置中心动态修改配置

Love The Way You Lie 2023-01-02 15:27 243阅读 0赞

本篇接于[《动态获取github中的配置文件》][github]，将其作为配置server

我们新建一个config-client项目

首先还是引入依赖：

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

配置文件

spring:
      application:
        name: config-client
      cloud:
        config:
          name: config-consumer
          uri: http://localhost:60000
          profile: prod
          label: master
    
    server:
      port: 61000
    
    management:
      security:
        enabled: false
      endpoints:
        web:
          exposure:
            include: "*"
      endpoint:
        health:
          show-details: always

我们弄一个测试Controller，用以读取配置文件

@RestController
    @RequestMapping("/refresh")
    @RefreshScope
    public class RefreshController { 
    
        @Value("${words}")
        private String words;
        
        @GetMapping("/words")
        public String getWords() { 
            return words;
        }
    
    }

分别启动`config-consumer`与`config-client`，然后访问: `http://localhost:61000/refresh/words`，可以看到返回了"God bless you"  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2x0MzI2MDMwNDM0_size_16_color_FFFFFF_t_70]  
然后我们去github上修改一下配置文件，将

words: 'God bless you'

修改为

words: 'God bless you and me'

然后访问`actuator`提供的`/refresh`接口（注意这里是post），可以看到`words`字段已经发生了变更  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2x0MzI2MDMwNDM0_size_16_color_FFFFFF_t_70 1]

我们再次访问: `http://localhost:61000/refresh/words`，可以看到此时words字段的值已经发生了变更  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2x0MzI2MDMwNDM0_size_16_color_FFFFFF_t_70 2]

[github]: https://jiandansuifeng.blog.csdn.net/article/details/112260104
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