Hystrix的/hystrix.stream端点404

解决访问Hystrix的/hystrix.stream端点返回404问题

错误界面

需要在Springboot项目启动类中，配置Bean设置如下 :
具体原因请查看springboot2.0下hystrix.stream 404

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

但此时可能会提示无法找到HystrixMetricsStreamServlet类;

Hystrix监控是使用Hystrix的hystrix-metrics-event-stream模块，就可以将这些监控的指标信息以text/event-stream的格式暴露给外部系统，所以需要引入hystrix-metrics-event-stream依赖

    <dependency>
        <groupId>com.netflix.hystrixgroupId>
        <artifactId>hystrix-metrics-event-streamartifactId>
    dependency>

在spring-cloud-starter-netflix-hystrix中已包含hystrix-metrics-event-stream模块，或者直接引入下面依赖

    <dependency>
        <groupId>org.springframework.cloudgroupId>
        <artifactId>spring-cloud-starter-netflix-hystrixartifactId>
    dependency>

问题解决！