springcloud实战之10 分布式配置中心（config）

基于为服务群，如果为每个服务读取自己的配置文件，有点重复造轮子。spingcloud提供了一个git远程仓库来创建分布式配置中心。

构建Config Server

创建一个springcloud-server-config项目

添加依赖

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>1.5.9.RELEASE</version>
    <relativePath />
</parent>
<dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-dependencies</artifactId>
            <version>Edgware.RELEASE</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
    </dependencies>
</dependencyManagement>
<dependencies>
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-config-server</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-eureka</artifactId>
    </dependency>
</dependencies>
           

添加配置文件

新建application.yml

server:
  port: 

spring:
  application:
    name: springcloud-server-config
  cloud:
    config:
      server:
        git:
          uri: https://github.com/shiyuan2he/springcloud
          search-paths: springcloud-repo-config ## 配置仓库路径下的相对搜索位置，可以配置多个
          username:
          password:
      label: master

eureka:
  client:
    service-url:
      defaultZone: http://peer1:8080/eureka/
           

添加入口类

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

Server config已经配置完成

构建Config Client

添加依赖

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>1.5.9.RELEASE</version>
    <relativePath />
</parent>
<dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-dependencies</artifactId>
            <version>Edgware.RELEASE</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
    </dependencies>
</dependencyManagement>
<dependencies>
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-config</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-eureka</artifactId>
    </dependency>
</dependencies>
           

添加配置文件

新建bootstrap.properties

spring.application.name=springcloud-service-config
spring.cloud.config.label=master
spring.cloud.config.profile=dev
spring.cloud.config.uri= http://localhost:/
server.port=

eureka.client.serviceUrl.defaultZone=http://peer1:/eureka/
## 从配置中心读取文件
spring.cloud.config.discovery.enabled=true
## 配置中心的servieId，即服务名。
spring.cloud.config.discovery.serviceId=springcloud-config-server
           

创建入口类

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

创建web层接口

@RestController
@RequestMapping(value = "/api/rest")
public class RestfulController {

    @Value("${user.name}")
    String name;
    @Value("${user.age}")
    String age ;

    @GetMapping("/name")
    public String getName(){
        return name +":"+ age;
    }
}
           

构建仓库

在仓库下新建配置文件springcloud-service-config-dev.properties

内容：

user.name=hehe
user.age=
           

启动项目

启动springcloud-service-config项目

测试项目

调用http://localhost:8002/api/rest/name

效果图：