SpringCloud-06-SpringCloudConfig分布式配置

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为微服务提供集中化的外部配置支持
包括服务端和客户端两部分

服务端

依赖

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-config-server</artifactId>
    <version>2.2.4.RELEASE</version>
</dependency>
<!--actuator完善监控信息-->
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-actuator</artifactId>
</dependency>

配置

server:
  port: 3344
spring:
  application:
    name: springcloud-config-server
  # 连接远程仓库
  cloud:
    config:
      server:
        git:
          uri: https://github.com/ChenCurry/springcloud-config.git

开启注解

@SpringBootApplication
@EnableConfigServer
public class ConfigServer3344 {
    public static void main(String[] args) {
        SpringApplication.run(ConfigServer3344.class, args);
    }
}

远程application.yml

spring:
  profiles:
    active: dev
---
spring:
  profiles: dev
  application:
    name: springcloud-config-dev
---
spring:
  profiles: test
  application:
    name: springcloud-config-test

访问远程配置

http://localhost:3344/application-dev.yml

访问资源的方式

/{application}/{profile}[/{label}]
/{application}-{profile}.yml
/{label}/{application}-{profile}.yml
/{application}-{profile}.properties
/{label}/{application}-{profile}.properties

---

客户端

先准备远程配置

spring:
  profiles:
    active: dev
---
server:
  port: 8201
#spring配置
spring:
  profiles: dev
  application:
    name: springcloud-provider-dept
#eureka
eureka:
  client:
    service-url:
      defaultZone: http://eureka7001.com:7001/eureka/
---
server:
  port: 8202
#spring配置
spring:
  profiles: test
  application:
    name: springcloud-provider-dept
#eureka
eureka:
  client:
    service-url:
      defaultZone: http://eureka7001.com:7001/eureka/

依赖

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!--actuator完善监控信息-->
<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>
    <version>2.2.4.RELEASE</version>
</dependency>

系统配置（访问“读远程配置的服务端”）

#系统级别的配置，区别于用户级别的配置（application.yml）
spring:
  cloud:
    config:
      name: config-client #需要从git上读取的资源名称，不需要后缀
      profile: test
      label: master
      uri: http://localhost:3344

用户配置（标识当前服务）

# 用户级别的配置
spring:
  application:
    name: springcloud-config-client-3355

访问远程配置

@RestController
public class ConfigClientController {

    @Value("${spring.application.name}")
    private String applicationName;
    @Value("${eureka.client.service-url.defaultZone}")
    private String eurekaServer;
    @Value("${server.port}")
    private String port;

    @RequestMapping("/config")
    public String getConfig(){
        return "applicationName:"+applicationName
                +"eurekaServer:"+eurekaServer
                +"port:"+port;
    }

}

http://localhost:8202/config

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实战测试

解决集群的配置问题

对应远程配置文件

spring:
  profiles:
    active: dev
---
server:
  port: 7001
#spring配置
spring:
  profiles: dev
  application:
    name: springcloud-config-eureka
#Eureka
eureka:
  instance:
    hostname: eureka7001.com  #服务端的实例名称
  client:
    register-with-eureka: false #表示是否向eureka注册中心注册自己
    fetch-registry: false #false表示自己为注册中心
    service-url: #监控页面
      #单机 defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/
      #集群（关联）
      defaultZone: http://eureka7002.com:7002/eureka/,http://eureka7003.com:7003/eureka/
---
server:
  port: 7001
#spring配置
spring:
  profiles: test
  application:
    name: springcloud-config-eureka
#Eureka
eureka:
  instance:
    hostname: eureka7001.com  #服务端的实例名称
  client:
    register-with-eureka: false #表示是否向eureka注册中心注册自己
    fetch-registry: false #false表示自己为注册中心
    service-url: #监控页面
      #单机 defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/
      #集群（关联）
      defaultZone: http://eureka7002.com:7002/eureka/,http://eureka7003.com:7003/eureka/

spring:
  profiles:
    active: dev
---
server:
  port: 8001
#mybatis配置
mybatis:
  type-aliases-package: com.gfpz.springcloud.pojo
  config-location: classpath:mybatis/mybatis-config.xml
  mapper-locations: classpath:mybatis/mapper/*.xml
#spring配置
spring:
  profiles: dev
  application:
    name: springcloud-config-dept
  datasource:
    type: com.alibaba.druid.pool.DruidDataSource
    driver-class-name: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://localhost:3306/db01?serverTimezone=UTC&useUnicode=true&characterEncoding=utf-8
    username: root
    password: root
#eureka
eureka:
  client:
    service-url:
      #往Eureka单机发布 defaultZone: http://localhost:7001/eureka/
      #往Eureka集群发布
      defaultZone: http://eureka7001.com:7001/eureka/,http://eureka7002.com:7002/eureka/,http://eureka7003.com:7003/eureka/
  instance:
    instance-id: Springcloud-provider-dept8001
#info 配置
info:
  app.name: gfpz-springcloud
  company.name: possible2dream.cn

---
server:
  port: 8001
#mybatis配置
mybatis:
  type-aliases-package: com.gfpz.springcloud.pojo
  config-location: classpath:mybatis/mybatis-config.xml
  mapper-locations: classpath:mybatis/mapper/*.xml
#spring配置
spring:
  profiles: test
  application:
    name: springcloud-config-dept
  datasource:
    type: com.alibaba.druid.pool.DruidDataSource
    driver-class-name: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://localhost:3306/db02?serverTimezone=UTC&useUnicode=true&characterEncoding=utf-8
    username: root
    password: root
#eureka
eureka:
  client:
    service-url:
      #往Eureka单机发布 defaultZone: http://localhost:7001/eureka/
      #往Eureka集群发布
      defaultZone: http://eureka7001.com:7001/eureka/,http://eureka7002.com:7002/eureka/,http://eureka7003.com:7003/eureka/
  instance:
    instance-id: Springcloud-provider-dept8001
#info 配置
info:
  app.name: gfpz-springcloud
  company.name: possible2dream.cn

http://localhost:3344/master/config-eureka-dev.yml（先保证服务端能够读取到）
http://localhost:7001/(7001端口是在远程文件里配置的，能访问成功，说明已经读到了)
http://localhost:8001/dept/get/1（服务端集群对应配置文件搞定）

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https://github.com/ChenCurry/springcloud.git

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