Eclipse配置運行SpringCloud（Hoxton + 2.2.4）微服務框架 + 高可用的分佈式配置中心Spring Cloud Config

簡介

Spring Cloud Config 是用來爲分佈式系統中的基礎設施和微服務應用提供集中化的外部配置支持，它分爲服務端ConfigServer與客戶端ConfigClient兩個部分。其中服務端也稱爲分佈式配置中心，它是一個獨立的微服務應用，用來連接配置倉庫併爲客戶端提供獲取配置信息、加密 / 解密信息等訪問接口；而客戶端則是微服務架構中的各個微服務應用或基礎設施，它們通過指定的配置中心來管理應用資源與業務相關的配置內容，並在啓動的時候從配置中心獲取和加載配置信息。Spring Cloud Config 實現了對服務端和客戶端中環境變量和屬性配置的抽象映射，所以它除了適用於 Spring 構建的應用程序之外，也可以在任何其他語言運行的應用程序中使用。由於 Spring Cloud Config 實現的配置中心默認採用 Git 來存儲配置信息，所以使用 Spring Cloud Config 構建的配置服務器，天然就支持對微服務應用配置信息的版本管理，並且可以通過 Git 客戶端工具來方便的管理和訪問配置內容。

服務端配置 Config Server（高可用）

添加依賴包文件POM.xml

<?xml version="1.0"?>
<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <modelVersion>4.0.0</modelVersion>
  <parent>
    <groupId>com.springcloud</groupId>
    <artifactId>springcloud-root</artifactId>
    <version>0.0.1-SNAPSHOT</version>
  </parent>
  <artifactId>springcloud-config-server</artifactId>
  <name>springcloud-config-server</name>
  <url>http://maven.apache.org</url>
  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  </properties>
  <dependencies>
    <dependency>
      <groupId>org.springframework.cloud</groupId>
      <artifactId>spring-cloud-config-server</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-netflix-eureka-client</artifactId>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-test</artifactId>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>
  </dependencies>
  <build>
    <plugins>
      <plugin>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-maven-plugin</artifactId>
      </plugin>
    </plugins>
  </build>
</project>

配置application.yml文件

application.yml

spring:
  application:
    name: springcloud-config-server
  freemarker:
    prefer-file-system-access: false
  security:
    user:
      name: admin
      password: 123456
  cloud:
    config:
      # 配置倉庫的分支
      label: master
      server:
        git:
          # 配置git倉庫地址
          # uri: [email protected]/springcloud-config.git
          uri: file:E:/SpringBoot/SpringCloud/springcloud-root/springcloud-config
          # 配置倉庫路徑
          search-paths: config-file
          # 訪問git倉庫的用戶名
          username: zhaojq
          # 訪問git倉庫的用戶密碼
          password: 123456

server:
  port: 8130

eureka:
  instance:
    hostname: eureka-config-server.com
    instance-id: eureka-config-server
  client:
    service-url:
      defaultZone: http://${spring.security.user.name}:${spring.security.user.password}@eureka-peer1.com:8897/eureka/,http://${spring.security.user.name}:${spring.security.user.password}@eureka-peer2.com:8898/eureka/,http://${spring.security.user.name}:${spring.security.user.password}@eureka-peer3.com:8899/eureka/

修改C:\Windows\System32\drivers\etc\hosts

127.0.0.1 eureka-config-server.com

配置本地Git倉庫

下載安裝git服務
https://git-scm.com/

git bash配置：

git config --global user.name "zhaojq" 
git config --global user.email "[email protected]"
git config --global user.password "123456"

創建git本地庫

application-test.properties
測試環境配置文件
application-dev.properties
開發環境配置文件
application-pro.properties
正式環境配置文件

添加Config Server啓動類

ConfigServerApplication.java

在啓動類加上@EnableConfigServer註解

package org.springcloud.config.server;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.config.server.EnableConfigServer;

@EnableConfigServer
@SpringBootApplication
public class ConfigServerApplication {

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

測試Config Server

啓動項目springcloud-config-server

http請求地址和資源文件映射如下:

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

訪問地址 http://eureka-config-server.com:8130/application/test/master

訪問地址 http://eureka-config-server.com:8130/application-test.yml

訪問地址 http://eureka-config-server.com:8130/master/application-test.yml

訪問地址 http://eureka-config-server.com:8130/application-test.properties

訪問地址 http://eureka-config-server.com:8130/master/application-test.properties

訪問地址 http://eureka-config-server.com:8130/master/test

證明配置服務中心可以獲取配置信息。

客戶端配置 Config Client

添加依賴包文件POM.xml

<?xml version="1.0"?>
<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <modelVersion>4.0.0</modelVersion>
  <parent>
    <groupId>com.springcloud</groupId>
    <artifactId>springcloud-root</artifactId>
    <version>0.0.1-SNAPSHOT</version>
  </parent>
  <artifactId>springcloud-config-client</artifactId>
  <name>springcloud-config-client</name>
  <url>http://maven.apache.org</url>
  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  </properties>
  <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-netflix-eureka-client</artifactId>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-test</artifactId>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>
  </dependencies>
</project>

配置bootstrap.yml文件

spring:
  application:
    name: springcloud-config-client
  freemarker:
    prefer-file-system-access: false
  security:
    user:
      name: admin
      password: 123456
  profiles:
    #讀取測試環境配置文件
    #active: test
    #讀取開發環境配置文件
    #active: dev
    #讀取正式環境配置文件
    active: pro    
  cloud:
    config:
      label: master
      fail-fast: true
      #指明配置服務中心的網址
      uri: http://eureka-config-server.com:8130

server:
  port: 8131

eureka:
  instance:
    hostname: eureka-config-client.com
    instance-id: eureka-config-client
  client:
    service-url:
      defaultZone: http://${spring.security.user.name}:${spring.security.user.password}@eureka-peer1.com:8897/eureka/,http://${spring.security.user.name}:${spring.security.user.password}@eureka-peer2.com:8898/eureka/,http://${spring.security.user.name}:${spring.security.user.password}@eureka-peer3.com:8899/eureka/

測試Config Client

啓動項目springcloud-config-client

Config Client成功向Config Server讀取了正式環境配置文件。

客戶端配置 Config Client（高可用）

參考https://blog.csdn.net/miaodichiyou/article/details/104160284

修改springcloud-eureka-provider項目

依賴包文件POM.xml

<?xml version="1.0"?>
<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <modelVersion>4.0.0</modelVersion>
  <parent>
    <groupId>com.springcloud</groupId>
    <artifactId>springcloud-root</artifactId>
    <version>0.0.1-SNAPSHOT</version>
  </parent>
  <artifactId>springcloud-eureka-provider</artifactId>
  <name>springcloud-eureka-provider</name>
  <url>http://maven.apache.org</url>
  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  </properties>
  <dependencies>
    <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-server</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-actuator</artifactId>
    </dependency>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>
  </dependencies>
</project>

增加bootstrap.yml文件

spring:
  application:
    name: springcloud-eureka-provider
  freemarker:
    prefer-file-system-access: false
  security:
    user:
      name: admin
      password: 123456
  cloud:
    config:
      #profile: dev
      label: master
      fail-fast: true
      #指明配置服務中心的網址
      uri: http://eureka-config-server.com:8130
      #discovery:
        #service-id: springcloud-config-server
        #enabled: true
eureka:
  client:
    service-url:
      defaultZone: http://${spring.security.user.name}:${spring.security.user.password}@eureka-peer1.com:8897/eureka/,http://${spring.security.user.name}:${spring.security.user.password}@eureka-peer2.com:8898/eureka/,http://${spring.security.user.name}:${spring.security.user.password}@eureka-peer3.com:8899/eureka/

修改application-provider.yml

application-provider1.yml

spring:
  cloud:
    config:
      profile: dev

server:
  port: 8001
  
eureka:
  instance:
    hostname: eureka-provider1.com
    instance-id: eureka-provider1

application-provider2.yml

spring:
  cloud:
    config:
      profile: pro
    
server:
  port: 8002
  
eureka:
  instance:
    hostname: eureka-provider2.com
    instance-id: eureka-provider2

application-provider3.yml 增加

spring:
  cloud:
    config:
      profile: test

server:
  port: 8003
  
eureka:
  instance:
    hostname: eureka-provider3.com
    instance-id: eureka-provider3

增加文件

ConfigProviderApplication.java

package org.springcloud.eureka.provider;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

@SpringBootApplication
@RestController
public class ConfigProviderApplication {

    @Value("${content}")
    String content;

    @Value("${server.port}")
    String port;

    @RequestMapping("/config")
    public String Home(@RequestParam String name) {
        return "Hello "+name+", This is from serverport:" + port+",content="+content;
    }

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

依次啓動項目

springcloud-eureka-cluster-peer1
springcloud-eureka-cluster-peer2
springcloud-eureka-cluster-peer3
springcloud-config-server
springcloud-eureka-provider1
springcloud-eureka-provider2
springcloud-eureka-provider3

瀏覽器訪問http://eureka-provider1.com:8001/config?name=zhaojq

瀏覽器訪問http://eureka-provider2.com:8002/config?name=zhaojq

瀏覽器訪問http://eureka-provider3.com:8003/config?name=zhaojq

Feign測試

參考https://blog.csdn.net/miaodichiyou/article/details/104304853

修改下列文件：

FeignConsumer.java

package org.springcloud.feign;

import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.stereotype.Component;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;

@Component
/*指定這個接口所要調用的提供者服務名稱 */
@FeignClient(value = "springcloud-eureka-provider",configuration = FeignConfig.class,fallback = FeignHystrix.class)

public interface FeignConsumer {
    @GetMapping(value = "/hi")
    String sayHiFromEurekaProvider(@RequestParam(value = "name")String name);
    
    @GetMapping(value = "/config")
    String getConfigFromConfigServer(@RequestParam(value = "name")String name);
}

FeignController.java

package org.springcloud.feign;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

/*調用提供者的home方法*/
@RestController
public class FeignController {
    @Autowired
    FeignService feignService;

    @GetMapping("/hi")
    public String hi(@RequestParam(defaultValue = "zhaojq",required = false)String name){
        return feignService.hi(name);
    }
    
    @GetMapping("/config")
    public String config(@RequestParam(defaultValue = "zhaojq",required = false)String name){
        return feignService.config(name);
    }
}

FeignService.java

package org.springcloud.feign;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
public class FeignService {
    @Autowired
    FeignConsumer feignConsumer;
    public String hi(String name){
        return feignConsumer.sayHiFromEurekaProvider(name);
    }
    
    public String config(String name){
        return feignConsumer.getConfigFromConfigServer(name);
    }
}

FeignConsumer.java

package org.springcloud.feign;

import org.springframework.stereotype.Component;

@Component
public class FeignHystrix implements FeignConsumer {

    @Override
    public String sayHiFromEurekaProvider(String name) {
        return "hi,"+name+", use Feign + hystrix, eureka-provider is down!";
    }
    
    @Override
    public String getConfigFromConfigServer(String name) {
        return "hi,"+name+", use Feign + hystrix, eureka-provider is down!";
    }
}

啓動springcloud-feign
在命令窗口curl http://eureka-feign.com:8101/config，發現Feign已經實現負載均衡

Eclipse配置運行SpringCloud（Hoxton + 2.2.4）微服務框架 + 高可用的分佈式配置中心Spring Cloud Config

簡介

服務端配置 Config Server（高可用）

添加依賴包文件POM.xml

配置application.yml文件

配置本地Git倉庫

添加Config Server啓動類

測試Config Server

客戶端配置 Config Client

添加依賴包文件POM.xml

配置bootstrap.yml文件

測試Config Client

客戶端配置 Config Client（高可用）

修改springcloud-eureka-provider項目

依賴包文件POM.xml

增加bootstrap.yml文件

修改application-provider.yml

增加文件

依次啓動項目

Feign測試

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