spring-cloud-hystrix之Unable to connect to Command Metric Stream.异常

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解决方法：

1,检查是否添加以下依赖

<!--监控中心--><dependency>        <groupId>org.springframework.boot</groupId>        <artifactId>spring-boot-starter-actuator</artifactId>    </dependency><!-- hystrix 断路器--><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter-hystrix</artifactId></dependency><!-- hystrix-dashboard监控 --><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter-hystrix-dashboard</artifactId></dependency>

2,springboot启动程序是否设置@EnableHystrixDashboard、@EnableCircuitBreaker注解

      @EnableFeignClients      @EnableDiscoveryClient      @SpringBootApplication      @EnableHystrixDashboard      @EnableCircuitBreaker      public class FeignApplication {            public static void main(String[] args) {               SpringApplication.run(FeignApplication.class, args);             }       }

3,是否在服务方法上添加 @HystrixCommand配置

         @HystrixCommand(fallbackMethod = "addFallBack",    threadPoolProperties = {            @HystrixProperty(name = "coreSize", value = "30"),            @HystrixProperty(name = "maxQueueSize", value = "101"),            @HystrixProperty(name = "keepAliveTimeMinutes", value = "2"),            @HystrixProperty(name = "queueSizeRejectionThreshold", value = "15"),            @HystrixProperty(name = "metrics.rollingStats.numBuckets", value = "12"),            @HystrixProperty(name = "metrics.rollingStats.timeInMilliseconds", value = "1440")            },       commandProperties = {            @HystrixProperty(name="execution.isolation.strategy", value="SEMAPHORE"),            @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds", value = "100"),              @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold", value = "50")    })

4,hystrix dashboard主页是否正确设置Monitor Stream

一般为：域名：端口/hystrix.stream

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