Hystrix 仪表板总是显示加载屏幕答案

【问题标题】：Hystrix dashboard always showing loading screenHystrix 仪表板总是显示加载屏幕
【发布时间】：2020-12-03 04:48:31
【问题描述】：

我使用 Netflix-OSS 库开发了微服务应用程序。我在 localhost:9091/hystrix 上运行的 Hystrix 仪表板上遇到问题。我想监控微服务 A 和微服务 B 之间的请求指标。端点“hystrix.stream”已注册。

hystrix 仪表板卡在加载时没有显示任何结果。

我检查了浏览器，发现 jquery 错误 - 未捕获的 TypeError：e.indexOf 不是一个似乎是 jquery 版本问题的函数。

我正在使用 Jdk 14 版本和 Spring boot 2.3 进行开发

【问题讨论】：

你能添加你得到的实际错误吗？从您的帖子中，我假设 e 是一种没有 indexOf 的对象，而不是 jquery 版本问题。

标签： java spring-boot netflix-eureka hystrix hystrix-dashboard

【解决方案1】：

            @bob0the0mighty
            I am adding code snippet for your reference. This is my springboot main class
            @SpringBootApplication
            @EnableEurekaClient
            @EnableCircuitBreaker
            @EnableHystrixDashboard
            public class DramaServiceApplication {
            }
        My controller looks like :
        @GetMapping("/acts")
            @com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand(fallbackMethod = "fallbackMethodForGetActor", commandKey = "test-Act", groupKey = "test-Act")
            public ActorList getActors() {
                ActorList actorList = restTemplate.getForObject("http://actor-service/actor/actorsList", ActorList.class);
                return actorList;
            }
    public ActorList fallbackMethodForGetActor() {
            return new ActorList(" Requested Actor page is under maintenance!!");
        }
    
    application.yml file looks like :
            
    management:
      endpoints:
        web:
          base-path: /
          exposure:
            include: hystrix.stream, health, info, metrics
After hitting request multiple times, I am getting hystrix dashboard as "loading" always
and screen looks like 
[enter image description here][1]
                


  [1]: https://i.stack.imgur.com/hOeZf.png

【讨论】：

【解决方案2】：

将 spring-cloud-dependencies 版本更新为“Hoxton.SR7”解决了我的问题。带有 spring-cloud-dependencies 版本“Hoxton.SR6”的 jquery 3.4.1 存在问题。

您可以在此处获取问题的详细信息和修复方法。 https://github.com/spring-cloud/spring-cloud-netflix/issues/3811 https://github.com/spring-cloud/spring-cloud-netflix/pull/3817

【讨论】：

【解决方案3】：

This issue got fixed by adding following configuration changes:
1. Updating Hoxton to SR7 in pom.xml:
   <properties>
        <java.version>14</java.version>
        <spring-cloud.version>Hoxton.SR7</spring-cloud.version>
    </properties>
2. Add these entries in application.yml:
hystrix:
  dashboard:
    proxy-stream-allow-list: '*'        
        
management:
  endpoints:
    web:
      base-path: /
      exposure:
        include: '*'
3. Creating a separate config Java class:
package com.ibm.drama.controller;

import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import com.netflix.hystrix.contrib.metrics.eventstream.HystrixMetricsStreamServlet;

@Configuration
public class HystrixConfig {

    @Bean
    public ServletRegistrationBean<HystrixMetricsStreamServlet> getServlet() {
        HystrixMetricsStreamServlet streamServlet = new HystrixMetricsStreamServlet();
        ServletRegistrationBean<HystrixMetricsStreamServlet> registrationBean = new ServletRegistrationBean<HystrixMetricsStreamServlet>(streamServlet);
        registrationBean.setLoadOnStartup(1);
        registrationBean.addUrlMappings("/actuator/hystrix.stream");
        registrationBean.setName("hystrix.stream");
        return registrationBean;
    }
}

【讨论】：