Spring Cloud Config 本地配置（基于eureka）

浅浅的花香味﹌ 2023-02-15 10:29 3阅读 0赞

## config服务端 ##

基于注册中心eureka做，直接贴代码  
**pom.xml**

<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>

**application.yml**

server:
      port: 8762
    spring:
      profiles:
        active: native # 配置使用本地储存
      application:
        name: config-demo
      cloud:
        config:
          server:
            native:
              search-locations: classpath:/config/  #本地配置文件路径
    eureka:
      client:
        registryFetchIntervalSeconds: 5
        service-url:
          defaultZone: http://localhost:8761/eureka/
      instance:
        leaseRenewalIntervalInSeconds: 10
        health-check-url-path: /actuator/health

## **注意** ##

如果这里不加上`spring.profiles.active=native` ，则启动会报错，会让你指定远程仓库。

***************************
    APPLICATION FAILED TO START
    ***************************
    
    Description:
    
    Invalid config server configuration.
    
    Action:
    
    If you are using the git profile, you need to set a Git URI in your configuration.  If you are using a native profile and have spring.cloud.config.server.bootstrap=true, you need to use a composite configuration.

**启动类**

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

## 注册中心（略） ##

可以查看我之前的文章[eureka配置][eureka]

## Config客户端 ##

**pom.xml**

<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.cloud</groupId>
        <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
    </dependency>

如果想加上重试机制，则加入以下依赖，不需要做其他配置，

<dependency>
        <groupId>org.springframework.retry</groupId>
        <artifactId>spring-retry</artifactId>
    </dependency>

**bootstrap.yml**

spring:
      profiles:
        active: dev
      application:
        name: admin-customer1
      cloud:
        config:
          fail-fast: true #失败快速响应 就是启动的时候，如果启动失败能够快速响应，而不是日志都打印一大堆了，才报错
          discovery:
            service-id: config-demo  #这里是config服务端注册到eureka的服务名称
            enabled: true #表示是否从配置中心读取文件
          profile: ${ spring.profiles.active}
    
    eureka:
      client:
        registryFetchIntervalSeconds: 5
        service-url:
          defaultZone: http://localhost:8761/eureka/
      instance:
        leaseRenewalIntervalInSeconds: 10
        health-check-url-path: /actuator/health

## 注意 ##

客户端的`application.yml`必须得换成`bootstrap.yml`，否则config客户端会找不到服务端的配置。由于spring cloud是先由bootstrap.yml文件去config server上读取配置文件，默认的没有bootstrap.yml或bootstrap.yml文件内容为空，则以http://localhost:8888为配置中心的url。若本地配置的Config Server端口号不为8888，则会导致取不到服务端的配置内容。

**所以综上所述，如果不把application更名为bootstrap，那你config服务端的端口就必须为8888。**

**客户端启动类**  
这里只需要加上eureka客户端的注解，如果你不是基于eureka来做的，那就什么都不用加。

@SpringBootApplication
    @EnableDiscoveryClient
    public class AdminCustomer1Application { 
        public static void main(String[] args) { 
            SpringApplication.run(AdminCustomer1Application.class, args);
        }
    }

## 验证 ##

首先我在Config服务端下建了个配置文件，如图  
![config配置][config]  
这里配置文件的名称有要求的。  
客户端的spring.application.name 加上profile后缀  
URL与配置文件的映射关系如下：

1.  /\{application\}/\{profile\}\[/\{label\}\]
2.  /\{application\}-\{profile\}.yml
3.  /\{label\}/\{application\}-\{profile\}.yml
4.  /\{application\}-\{profile\}.properties
5.  /\{label\}/\{application\}-\{profile\}.properties

启动顺序：

1.  启动eureka
2.  启动config服务端
3.  启动客户端

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM4ODYzMjky_size_16_color_FFFFFF_t_70]  
获取到了config服务端设置的客户端端口号，成功！

[eureka]: https://blog.csdn.net/qq_38863292/article/details/80608316
[config]: https://img-blog.csdnimg.cn/20200605140232848.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM4ODYzMjky,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM4ODYzMjky_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20200605140504957.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM4ODYzMjky,size_16,color_FFFFFF,t_70