SpringCloud之Config分布式配置中心(2)-阿里云开发者社区

SpringCloud Config客户端的配置

创建Spring Cloud Config客户端,通过服务端从git获取配置文件信息，首先创建一个往git上面创建一个microservicecloud-config-client.yml配置文件

填写

spring: 
  profiles:
   active:
    - dev
---
server:
  port: 8201
spring:
  profiles: dev
  application:
    name: microservicec loud-config-client
eureka:
  client:
    serviceUrl:
       defaultZone: http://eureka7001:7001/eureka/
---
server:
  port: 8202
spring:
  profiles: test
  application:
    name: microservicec loud-config-client
eureka:
  client:
    serviceUrl:
       defaultZone: http://eureka7001:7001/eureka/

然后在当前目录下右键打开Git Bash Here命令行面板

输入命令：

git status
git add .
git commit -m "test file"   #提交添加注释
git push origin master    # 将本地master分支推送到origin主机

提交到github

创建一个microservicecloud-config-client-3355微服务,添加依赖

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <parent>
    <groupId>com.atguigu.springcloud</groupId>
    <artifactId>microservicecloud</artifactId>
    <version>0.0.1-SNAPSHOT</version>
  </parent>
    <artifactId>microservicecloud-config-client-3355</artifactId>
    <dependencies>
        <!-- SpringCloud Config客户端 -->
        <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>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-hystrix</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-eureka</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-jetty</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>springloaded</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
        </dependency>
    </dependencies>
</project>

新増了一个bootstrap.yml文件

spring:
  cloud:
    config:
      name: microservicecloud-config-client #需要从github上读取的资源名称，注意没有yml后缀名
      profile: test   #本次访问的配置项
      label: master   
      uri: http://config-3344.com:3344  #本微服务启动后先去找3344号服务，通过SpringCloudConfig获取GitHub的服务地址

配置bootstrap.yml的原因

https://blog.csdn.net/dulabing/article/details/80183662

https://www.cnblogs.com/fengli9998/p/8489084.html

配置application.yml

spring:
  application:
    name: microservicecloud-config-client

获取配置文件信息类

package com.atguigu.springcloud.rest;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class ConfigClientRest
{
  @Value("${spring.application.name}")
  private String applicationName;
  @Value("${eureka.client.serviceUrl.defaultZone}")
  private String eurekaServers;
  @Value("${server.port}")
  private String port;
  @RequestMapping("/config")
  public String getConfig()
  {
    String str = "applicationName: " + applicationName + "\t eurekaServers:" + eurekaServers + "\t port: " + port;
    System.out.println("******str: " + str);
    return "applicationName: " + applicationName + "\t eurekaServers:" + eurekaServers + "\t port: " + port;
  }
}

启动类

package com.atguigu.springcloud;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class ConfigClient_3355_StartSpringCloudApp
{
  public static void main(String[] args)
  {
    SpringApplication.run(ConfigClient_3355_StartSpringCloudApp.class, args);
  }
}

分别启动

microservicecloud-eureka-7001

microservicecloud-config-3344

microservicecloud-config-client-3355

由于客户端的bootstrap.yml配置的是test所有访问的是git上面的8202端口

http://client-config.com:8202/config

当我们把bootstrap配置文件中的 profile更改为 dev,再启动访问的便是git上的8201端口

config服务端配置ok且测试通过，我们可以和config+GitHub进行配置修改并获取内容

SpringCloud Config客户端配置实战

做一个eureka服务+一个访问的微服务，将两个微服务的配置统由github获得实现统一配置分布式管理，完成多环境的变更。

eureka的git配置文件microservicecloud-config-eureka-client可以根据dev或者test切换不同的配置

spring: 
  profiles:
   active:
    - dev
---
server: 
  port: 7001
spring:
  profiles: dev
  application:
    name: microservicecloud-config-eureka-client
eureka:
  instance:
    hostname: eureka7001 #eureka服务端的实例名称
    prefer-ip-address: true     #访问路径可以显示IP地址
  client: 
    register-with-eureka: false     #false表示不向注册中心注册自己。
    fetch-registry: false     #false表示自己端就是注册中心，我的职责就是维护服务实例，并不需要去检索服务
    service-url: 
      defaultZone: http://eureka7001:7001/eureka/
---
server: 
  port: 7001
spring:
  profiles: test
  application:
    name: microservicecloud-config-eureka-client
eureka:
  instance:
    hostname: eureka7001 #eureka服务端的实例名称
    prefer-ip-address: true     #访问路径可以显示IP地址
  client: 
    register-with-eureka: false     #false表示不向注册中心注册自己。
    fetch-registry: false     #false表示自己端就是注册中心，我的职责就是维护服务实例，并不需要去检索服务
    service-url: 
      defaultZone: http://eureka7001:7001/eureka/

提供接口的微服务的git配置文件可以根据dev或者test切换不同配置，连接不同数据库

spring: 
  profiles:
   active:
    - dev
---
server:
  port: 8001
spring:
   profiles: dev
   application:
    name: microservicecloud-config-dept-client
   datasource:
    type: com.alibaba.druid.pool.DruidDataSource            # 当前数据源操作类型
    driver-class-name: org.gjt.mm.mysql.Driver              # mysql驱动包
    url: jdbc:mysql://localhost:3306/cloudDB01              # 数据库名称
    username: root
    password: 671354
    dbcp2:
      min-idle: 5                                           # 数据库连接池的最小维持连接数
      initial-size: 5                                       # 初始化连接数
      max-total: 5                                          # 最大连接数
      max-wait-millis: 200                                  # 等待连接获取的最大超时时间
mybatis:
  config-location: classpath:mybatis/mybatis.cfg.xml        # mybatis配置文件所在路径
  type-aliases-package: com.smxy.lq.entities    # 所有Entity别名类所在包
  mapper-locations:
  - classpath:mybatis/mapper/**/*.xml                       # mapper映射文件
eureka:
  client: #客户端注册进eureka服务列表内
    service-url:
       defaultZone: http://eureka7001:7001/eureka/
  instance:
    instance-id: microservicecloud-dept8001  #服务名称
    prefer-ip-address: true     #访问路径可以显示IP地址
info:
  app.name: microservicecloud
  company.name: www.baidu.com
---
server:
  port: 8001
spring:
   profiles: test
   application:
    name: microservicecloud-config-dept-client
   datasource:
    type: com.alibaba.druid.pool.DruidDataSource            # 当前数据源操作类型
    driver-class-name: org.gjt.mm.mysql.Driver              # mysql驱动包
    url: jdbc:mysql://localhost:3306/cloudDB02              # 数据库名称
    username: root
    password: 671354
    dbcp2:
      min-idle: 5                                           # 数据库连接池的最小维持连接数
      initial-size: 5                                       # 初始化连接数
      max-total: 5                                          # 最大连接数
      max-wait-millis: 200                                  # 等待连接获取的最大超时时间
mybatis:
  config-location: classpath:mybatis/mybatis.cfg.xml        # mybatis配置文件所在路径
  type-aliases-package: com.smxy.lq.entities    # 所有Entity别名类所在包
  mapper-locations:
  - classpath:mybatis/mapper/**/*.xml                       # mapper映射文件
eureka:
  client: #客户端注册进eureka服务列表内
    service-url:
       defaultZone: http://eureka7001:7001/eureka/
  instance:
    instance-id: microservicecloud-dept8001  #服务名称
    prefer-ip-address: true     #访问路径可以显示IP地址
info:
  app.name: microservicecloud
  company.name: www.baidu.com

新建microservicecloud-config-eureka-client-7001微服务，添加依赖

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <parent>
    <groupId>com.atguigu.springcloud</groupId>
    <artifactId>microservicecloud</artifactId>
    <version>0.0.1-SNAPSHOT</version>
  </parent>
  <artifactId>microservicecloud-config-eureka-client-7001</artifactId>
  <dependencies>
        <!-- SpringCloudConfig配置 -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-config</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-eureka-server</artifactId>
        </dependency>
        <!-- 热部署插件 -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>springloaded</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
        </dependency>
    </dependencies>
</project>

添加bootstrap.yml,指向github的配置文件

spring:
  cloud:
    config:
      name: microservicecloud-config-eureka-client #需要从github上读取的资源名称，注意没有yml后缀名
      profile: dev   #本次访问的配置项
      label: master   
      uri: http://config-3344.com:3344  #本微服务启动后先去找3344号服务，通过SpringCloudConfig获取GitHub的服务地址

application.yml

spring:
  application:
    name: microservicecloud-config-eureka-client

其他的与之前的7001没什么区别

新建microservicecloud-config-dept-client-8001微服务添加依赖

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <parent>
    <groupId>com.atguigu.springcloud</groupId>
    <artifactId>microservicecloud</artifactId>
    <version>0.0.1-SNAPSHOT</version>
  </parent>
  <artifactId>microservicecloud-config-dept-client-8001</artifactId>
  <dependencies>
   <!-- SpringCloudConfig配置 -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-config</artifactId>
        </dependency>
    <!-- 引入自己定义的api通用包，可以使用Dept部门Entity -->
    <dependency>
      <groupId>com.atguigu.springcloud</groupId>
      <artifactId>microservicecloud-api</artifactId>
      <version>${project.version}</version>
    </dependency>
    <!-- actuator监控信息完善 -->
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-actuator</artifactId>
    </dependency>
    <!-- 将微服务provider侧注册进eureka -->
    <dependency>
      <groupId>org.springframework.cloud</groupId>
      <artifactId>spring-cloud-starter-eureka</artifactId>
    </dependency>
    <dependency>
      <groupId>org.springframework.cloud</groupId>
      <artifactId>spring-cloud-starter-config</artifactId>
    </dependency>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
    </dependency>
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
    </dependency>
    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>druid</artifactId>
    </dependency>
    <dependency>
      <groupId>ch.qos.logback</groupId>
      <artifactId>logback-core</artifactId>
    </dependency>
    <dependency>
      <groupId>org.mybatis.spring.boot</groupId>
      <artifactId>mybatis-spring-boot-starter</artifactId>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-jetty</artifactId>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-test</artifactId>
    </dependency>
    <!-- 修改后立即生效，热部署 -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>springloaded</artifactId>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-devtools</artifactId>
    </dependency>
  </dependencies>
</project>

添加bootstrap.yml配置，name填写github的配置文件

spring:
  cloud:
    config:
      name: microservicecloud-config-dept-client #需要从github上读取的资源名称，注意没有yml后缀名
      #profile配置是什么就取什么配置dev or test
      profile: dev
      #profile: test
      label: master
      uri: http://config-3344.com:3344  #SpringCloudConfig获取的服务地址

其它的配置与之前的microservicecloud-provider-dept-8001一致,依次启动

microservicecloud-config-3344、

microservicecloud-config-eureka-client-7001

microservicecloud-config-dept-client-8001的微服务,

更改bootstrap.yml中的profile的属性就可以实现动态更改策略

springcloud完整代码：

https://github.com/yjp245/microservicecloud

SpringCloud之Config分布式配置中心(2)

SpringCloud Config客户端的配置

SpringCloud Config客户端配置实战

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