Spring Cloud入门教程-使用Hystrix Dashboard 监控熔断器的状态

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 hystrixMetricsStreamServlet() {
        ServletRegistrationBean registration = new ServletRegistrationBean(new HystrixMetricsStreamServlet());
        registration.addUrlMappings("/hystrix.stream");
        registration.setName("HystrixMetricsStreamServlet");
        return registration;
    }
}

这段代码定义了一个配置类，在Spring Boot应用中注册了HystrixMetricsStreamServlet，这是Hystrix Dashboard用来获取Hystrix的监控数据的关键Servlet。通过addUrlMappings方法，我们将这个Servlet绑定到了/hystrix.stream这个URL上，这样就可以通过访问这个URL来获取Hystrix的实时监控数据。