1.建立子專案turbine

2.pom.xml

<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.zhangdemo</groupId>
    <artifactId>springcloud</artifactId>
    <version>0.0.1-SNAPSHOT</version>
  </parent>
  <artifactId>productServiceTurbine</artifactId>

  <dependencies>
    <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-web</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-netflix-hystrix</artifactId>
    </dependency>
    <dependency>
      <groupId>org.springframework.cloud</groupId>
      <artifactId>spring-cloud-starter-netflix-hystrix-dashboard</artifactId>
    </dependency>
    <dependency>
      <groupId>org.springframework.cloud</groupId>
      <artifactId>spring-cloud-starter-netflix-turbine</artifactId>
    </dependency>

  </dependencies>

</project>
 

3.ProductServiceTurbineApplication

@SpringBootApplication
@EnableTurbine
public class ProductServiceTurbineApplication {
    public static void main(String[] args) {
        int port = 8021;
        if(!NetUtil.isUsableLocalPort(port)) {
            System.err.printf("埠%d被佔用了，無法啟動%n", port );
            System.exit(1);
        }
        new SpringApplicationBuilder(ProductServiceTurbineApplication.class).properties("server.port=" + port).run(args);

    }

}
 

4.application.yml

spring:
  application.name: turbine
turbine:
  aggregator:
    clusterConfig: default
  appConfig: product-view-service-feign  # 配置Eureka中的serviceId列表，表明監控哪些服務
  clusterNameExpression: new String("default")
eureka:
  client:
    serviceUrl:
      defaultZone: http://localhost:8761/eureka/
 

5.AccessViewService

public class AccessViewService {

    public static void main(String[] args) {

        while(true) {
            ThreadUtil.sleep(1000);
            access(8012);
            access(8013);
        }

    }

    public static void access(int port) {
        try {
            String html= HttpUtil.get(String.format("http://127.0.0.1:%d/products",port));
            System.out.printf("%d 地址的檢視服務訪問成功，返回大小是 %d%n" ,port, html.length());
        }
        catch(Exception e) {
            System.err.printf("%d 地址的檢視服務無法訪問%n",port);
        }
    }
}

6.測試

1.開啟http://localhost:8020/hystrix，輸入如下內容

2.進入到以下頁面