springcloud系列九 整合Hystrix Dashboard springcloud系列九 整合Hystrix Dashboard

 

Hystrix Dashboard是Hystrix的仪表盘组件，主要用来实时监控Hystrix的各项指标信息，通过界面反馈的信息可以快速发现系统中存在的问题。

整合快速体验:

pom.xml(这个是F系之后的依赖)

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

之前的使用:

<dependency>   
 <groupId>org.springframework.cloud</groupId>  
  <artifactId>spring-cloud-starter-hystrix</artifactId>
</dependency>
<dependency>   
 <groupId>org.springframework.cloud</groupId> 
   <artifactId>spring-cloud-starter-hystrix-dashboard</artifactId>
</dependency><dependency>  
  <groupId>org.springframework.boot</groupId>  
  <artifactId>spring-boot-starter-actuator</artifactId>
</dependency>

启动类上加

启动类配置@EnableHystrixDashboard注解

启动类加配置:

package com.cxy;
import com.netflix.hystrix.contrib.metrics.eventstream.HystrixMetricsStreamServlet;
import com.netflix.loadbalancer.BestAvailableRule;
import com.netflix.loadbalancer.IRule;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.cloud.client.circuitbreaker.EnableCircuitBreaker;
import org.springframework.cloud.client.loadbalancer.LoadBalanced;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
import org.springframework.cloud.netflix.hystrix.dashboard.EnableHystrixDashboard;
import org.springframework.cloud.openfeign.EnableFeignClients;
import org.springframework.context.annotation.Bean;
import org.springframework.web.client.RestTemplate;
/***
* @ClassName: PersonApplication
* @Description:
* @Auther: 陈绪友
* @Date: 2019/1/2816:30
* @version : V1.0
*/
@EnableCircuitBreaker
@SpringBootApplication
@EnableEurekaClient
//开启注解，注册服务
@MapperScan("com.cxy")
@EnableFeignClients
@EnableHystrixDashboard
public class UserApplication {
public static void main(String[] args) {
SpringApplication.run(UserApplication.class,args);
}
@Bean
// @LoadBalanced
//使用负载均衡器Ribbon
public RestTemplate getRestTemplate(){
return new RestTemplate();
}
/*@Bean
public IRule myRule(){
//return new RoundRobinRule();//轮询
// return new RetryRule();//重试
return new BestAvailableRule();
}*/
@Bean
public ServletRegistrationBean getServlet(){
HystrixMetricsStreamServlet streamServlet = new HystrixMetricsStreamServlet();
ServletRegistrationBean registrationBean = new ServletRegistrationBean(streamServlet);
registrationBean.setLoadOnStartup(1);
registrationBean.addUrlMappings("/actuator/hystrix.stream");
registrationBean.setName("HystrixMetricsStreamServlet");
return registrationBean;
}
}

http://127.0.0.1:8082/actuator/hystrix.stream  这个路径配置千万不要写localhost

不然控制台报错:

java.net.UnknownHostException: loclahost
at java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method) ~[na:1.8.0_192]
at java.net.InetAddress$2.lookupAllHostAddr(InetAddress.java:929) ~[na:1.8.0_192]
at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1324) ~[na:1.8.0_192]
at java.net.InetAddress.getAllByName0(InetAddress.java:1277) ~[na:1.8.0_192]
at java.net.InetAddress.getAllByName(InetAddress.java:1193) ~[na:1.8.0_192]
at java.net.InetAddress.getAllByName(InetAddress.java:1127) ~[na:1.8.0_192]
at org.apache.http.impl.conn.SystemDefaultDnsResolver.resolve(SystemDefaultDnsResolver.java:45) ~[httpclient-4.5.6.jar:4.5.6]
at org.apache.http.impl.conn.DefaultClientConnectionOperator.resolveHostname(DefaultClientConnectionOperator.java:263) ~[httpclient-4.5.6.jar:4.5.6]
at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:162) ~[httpclient-4.5.6.jar:4.5.6]
at org.apache.http.impl.conn.ManagedClientConnectionImpl.open(ManagedClientConnectionImpl.java:326) ~[httpclient-4.5.6.jar:4.5.6]
at org.apache.http.impl.client.DefaultRequestDirector.tryConnect(DefaultRequestDirector.java:610) ~[httpclient-4.5.6.jar:4.5.6]
at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:445) ~[httpclient-4.5.6.jar:4.5.6]
at org.apache.http.impl.client.AbstractHttpClient.doExecute(AbstractHttpClient.java:835) ~[httpclient-4.5.6.jar:4.5.6]
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:83) ~[httpclient-4.5.6.jar:4.5.6]
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:108) ~[httpclient-4.5.6.jar:4.5.6]
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:56) ~[httpclient-4.5.6.jar:4.5.6]
at org.springframework.cloud.netflix.hystrix.dashboard.HystrixDashboardConfiguration$ProxyStreamServlet.doGet(HystrixDashboardConfiguration.java:177) ~[spring-cloud-netflix-hystrix-dashboard-2.1.0.RELEASE.jar:2.1.0.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:634) [tomcat-embed-core-9.0.14.jar:9.0.14]

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