9.1统一管理微服务config server和client

怼烎@ 2023-07-03 10:50 10阅读 0赞

> config server 是一个可横向扩展，集中式的配置服务器，默认使用git存储配置内容
> 
> config server，用于操作存储在 config server中的配置属性。微服务启动时，会请求config server获取所需要的配置属性，然后缓存这些属性。

## 在git建立文件 ##

microservice-foo.properties
    microservice-foo-dev.properties
    microservice-froo-test.properties
    microservice-froo-production.properties

内容为：

profile=production-1.0

创建：config-label-v2.0 分支，里面内容写 2.0

## 映入pom ##

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

## 开启server ##

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

## application.yml ##

server:
      port: 8080
    spring:
      application:
        name: microservice-config-server
      cloud:
        config:
          server:
            git:
              uri: https://git.oschina.net/itmuch/spring-cloud-config-repo      # 配置Git仓库的地址
              username:                                                         # Git仓库的账号
              password:                                                         # Git仓库的密码

## config server的端点 ##

> /\{application\}/\{profiles\}\[/\{label\}\] /项目名/dev/\[/master\]
> 
> /\{application\}-\{profiles\}.yml /项目名-dev.yml
> 
> /\{label\}/\{application\}-\{profile\}.yml /master/项目名-dev.yml
> 
> /\{application\}-\{profile\}.properties /项目名-dev.properties
> 
> /\{label\}/\{application\}-\{profile\}.properties /master/项目名-dev.properties

以上端点都可以映射到： \{application\}-\{profile\}.properties

http://localhost:8080/microservice-foo/dev/master

http://localhost:8080/microservice-foo/dev/ “label”:null,

{ 
        "name": "microservice-foo",
        "profiles": [
            "dev"
        ],
        "label": "master",
        "version": "sssdddf",
        "state": null,
        "propertySources": [
            { 
                "name": "https://git.oschina.net/itmuch/spring-cloud-config-repo/microservice-foo-dev.properties",
                "source": { 
                    "profile": "dev-1.0"
                }
            },
            { 
                "name": "https://git.oschina.net/itmuch/spring-cloud-config-repo/microservice-foo.properties",
                "source": { 
                    "profile": "default-1.0"
                }
            },
            { 
                "name": "https://git.oschina.net/itmuch/spring-cloud-config-repo/application.properties",
                "source": { 
                    "profile": "default",
                    "test": "1"
                }
            }
        ]
    }

http://localhost:8080/microservice-foo-dev.yml

profile: dev-1.0
    test: '1'

http://localhost:8080/microservice-foo-dev.properties

profile: dev-1.0
    test: 1 //注意，这里是数字1

http://localhost:8080/config-label-v2.0/microservice-foo-dev.properties

profile: dev-2.0

# 编写config client #

## 引入pom ##

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

## 不用再main上开启注释，application.yml 不写配置 ##

server:
      port: 8081

## bootstrap.yml ##

spring:
      application:
        name: microservice-foo    # 对应config server所获取的配置文件的{application}
      cloud:
        config:
          uri: http://localhost:8080/
          profile: dev            # profile对应config server所获取的配置文件中的{profile} 
          label: master           # 指定Git仓库的分支，对应config server所获取的配置文件的{label}

> 引导上下文加载bootstrap.\* 中的属性。配置在bootstrap.\*中的属性有更高的优先级，因此默认环境下她们不能被本地配置覆盖

## 使用测试 ##

@RestController
    public class ConfigClientController { 
      @Value("${profile}")
      private String profile;
    
      @GetMapping("/profile")
      public String hello() { 
        return this.profile;
      }
    }

http://localhost:8081/profile

结果：dev-1.0