1.创建子项目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("端口%d被占用了,无法启动%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,表明监控哪些服务
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 地址的视图服务访问成功,返回大小是 %d%n" ,port, html.length());
}
catch(Exception e) {
System.err.printf("%d 地址的视图服务无法访问%n",port);
}
}
}
6.测试
1.打开http://localhost:8020/hystrix,输入如下内容
2.进入到以下页面