springcloud hystrix-dashboard improve faliure.

1、单单引入一个教程上的，不行；按照下面的pom进行修改

<dependency>
			<groupId>com.netflix.hystrix</groupId>
			<artifactId>hystrix-javanica</artifactId>
			<version>RELEASE</version>
		</dependency>

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

　　

success！

2、run the application，but the view like this：

What's the problem ?

This is a single project,if the other projects could use hystrix,you need to add hystrix code into the other project.like this:

package com.bcd.cloud.pf.ribbon;

import com.netflix.hystrix.contrib.metrics.eventstream.HystrixMetricsStreamServlet;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.cloud.client.loadbalancer.LoadBalanced;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
import org.springframework.cloud.netflix.hystrix.EnableHystrix;
import org.springframework.context.annotation.Bean;
import org.springframework.web.client.RestTemplate;


/**
 * RibbonApplication class
 *
 * @EnableEurekaClient was created by myself
 * @EnableHystrix was created by myself ,断路由
 *
 * @author myself
 * @date 2019/12/05
 */
@SpringBootApplication
//@EnableEurekaClient
@EnableDiscoveryClient
@EnableHystrix
public class RibbonApplication {

	public static void main(String[] args) {
		SpringApplication.run(RibbonApplication.class, args);
	}

	/**
	  *  加入restTemplate以消费相关的服务。
	* */
	@Bean
	@LoadBalanced
	RestTemplate restTemplate()
	{
		return new RestTemplate();
	}

	@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;
	}
}

　　Reboot the 8764 project.and input the url like this:

http://localhost:8764/actuator/hystrix.stream