springcloud——hystrix图形化dashboard服务监控

监控模块与被监控服务必须添加的图形化依赖：

 		<!--springboot框架web项目起步依赖-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <!--springboot框架actuator项目起步依赖-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>

一、监控模块

1、pom文件

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

    <!--该模块的父工程的gav坐标-->
    <parent>
        <artifactId>springcloud</artifactId>
        <groupId>com.springcloud</groupId>
        <version>1.0.0</version>
    </parent>

    <!--该模块的版本号-->
    <modelVersion>4.0.0</modelVersion>

    <!--该模块的名称-->
    <artifactId>consumer-hystrix-dashboard9001</artifactId>

    <!--该模块的所有依赖-->
    <dependencies>

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-hystrix-dashboard</artifactId>
            <version>2.2.0.RELEASE</version>
        </dependency>

        <!--springboot框架web项目起步依赖-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <!--springboot框架actuator项目起步依赖-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>

        <!--springboot框架devtools依赖-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
        </dependency>

        <!--springcloud框架hystrix依赖-->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-hystrix</artifactId>
            <version>2.2.3.RELEASE</version>
        </dependency>

        <!--springcloud框架openfeign起步依赖-->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-openfeign</artifactId>
            <version>2.2.3.RELEASE</version>
        </dependency>

        <!--lombok依赖-->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>

        <!--本地项目重构依赖-->
        <dependency>
            <groupId>com.springcloud</groupId>
            <artifactId>api-commons</artifactId>
            <version>1.0.0</version>
        </dependency>

    </dependencies>

</project>

2、主启动类

package com.springcloud;

import lombok.extern.slf4j.Slf4j;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.hystrix.dashboard.EnableHystrixDashboard;

/**
 * @author dc
 * @date 2020/8/1 - 11:44
 */
@SpringBootApplication
@Slf4j
@EnableHystrixDashboard     //开启HystrixDashboard
public class HystrixDashboardMain9001 {

    public static void main(String[] args) {
        SpringApplication.run(HystrixDashboardMain9001.class, args);
    }

}

3、主配置文件

server.port=9001

二、被监控的服务

主启动类添加内容

package com.springcloud;

import com.netflix.hystrix.contrib.metrics.eventstream.HystrixMetricsStreamServlet;
import lombok.extern.slf4j.Slf4j;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.cloud.client.circuitbreaker.EnableCircuitBreaker;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
import org.springframework.context.annotation.Bean;

/**
 * @author dc
 * @date 2020/7/28 - 10:51
 */
@SpringBootApplication
@Slf4j
@EnableEurekaClient
@EnableCircuitBreaker   //服务降级使能注解
public class PaymentHystrixMain8081 {

    public static void main(String[] args) {
        SpringApplication.run(PaymentHystrixMain8081.class, args);
    }

    /**
     * 此配置是为了服务监控而配置，与服务容错本身无关，springcloud升级后的坑
     * ServletRegistrationBean因为springboot的默认路径不是“/hystrix.stream”，
     * 只要在自己的项目里的主启动类里面配置如下代码就可以了。
     */
    @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;
    }

}