SpringCloud之熔断器仪表盘监控

   Feign和Ribbon使用熔断器仪表盘监控都需要依赖于下面的Jar

    org.springframework.cloud
    spring-cloud-starter-netflix-hystrix-dashboard

  在application中增加@EnableHystrixDashboard注解 开启熔断器仪表盘监控

package com.einblatt.hello.spring.cloud.web.admin.feign;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.cloud.netflix.hystrix.dashboard.EnableHystrixDashboard;
import org.springframework.cloud.openfeign.EnableFeignClients;

@EnableFeignClients     //启用Fegin客户端
@EnableDiscoveryClient  //注册到eureka
@SpringBootApplication
@EnableHystrixDashboard //开启熔断器监控
public class WebAdminFeignApplication {
    public static void main(String[] args) {
        SpringApplication.run(WebAdminFeignApplication.class,args);
    }
}

创建 hystrix.stream 的 Servlet 配置
Spring Boot 2.x 版本开启 Hystrix Dashboard 与 Spring Boot 1.x 的方式略有不同，需要增加一个 HystrixMetricsStreamServlet 的配置
创建config文件夹在其文件夹下创建HystrixDashboardConfiguration 类(配置类)
 

package com.einblatt.hello.spring.cloud.web.admin.feign.config;

import com.netflix.hystrix.contrib.metrics.eventstream.HystrixMetricsStreamServlet;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Configuration
public class HystrixDashboardConfiguration {

    @Bean
    public ServletRegistrationBean getServlet(){
        HystrixMetricsStreamServlet streamServlet = new HystrixMetricsStreamServlet();
        ServletRegistrationBean registrationBean = new ServletRegistrationBean(streamServlet);
        registrationBean.setLoadOnStartup(1);  //开机自启(加载顺序)
        registrationBean.addUrlMappings("/hystrix.stream");   //配置servlet的访问路径
        registrationBean.setName("HystrixMetricsStreamServlet");  //servlet的名称
        return registrationBean;
    }
}

测试
访问http://localhost:8765/hystrix 
出现这个豪猪界面


 

中间那输入框输入配置的servlet访问路径 

输入 http://localhost:8765/hystrix.stream
delay:单位为毫秒.表示多少毫秒检测一次,title:主题

若访问成功会出现以下页面