有关Hystrix Dashboard监控页面一直显示Loading问题的解决

最新推荐文章于 2024-09-06 09:29:55 发布

是个可爱的小伙砸

最新推荐文章于 2024-09-06 09:29:55 发布

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分类专栏： SSM框架

本文链接：https://blog.youkuaiyun.com/qq_38307826/article/details/115839528

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时隔多日，写一篇自学SpringCloud期间遇到的问题
在使用Hystrix Dashboard对项目进行监控时，Hystrix Dashboard监控页面一直显示Loading，浏览器端按下F12显示net::ERR_CONNECTION_TIMED_OUT，但是访问/actuator/hystrix.stream可以正常打印
在这里插入图片描述
而且在项目中相应位置也都添加了相应的注解：
主程序：CloudConsumerUserFeignApplication.java

package com.atguigu.springcloud;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.circuitbreaker.EnableCircuitBreaker;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.cloud.netflix.hystrix.dashboard.EnableHystrixDashboard;
import org.springframework.cloud.openfeign.EnableFeignClients;


@EnableFeignClients  //开启Feign功能
@EnableDiscoveryClient  //让注册中心扫描到该服务
@EnableCircuitBreaker
@SpringBootApplication
@EnableHystrixDashboard
public class CloudConsumerUserFeignApplication {

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

}

被调用的方法：MovieService.java

package com.atguigu.springcloud.service;


import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;

import com.atguigu.springcloud.bean.Movie;

@FeignClient(value="CLOUD-PROVIDER-MOVIE",fallback=MovieFeignExceptionHandlerException.class) //与被调用端的服务名称一致
public interface MovieService {

	@RequestMapping("/getMovieName/{id}")
	Movie getMovieName(@PathVariable("id")Integer id);  //与被调用服务端的映射方法一致

}

错误处理类：MovieFeignExceptionHandlerException.java

package com.atguigu.springcloud.service;

import org.springframework.stereotype.Component;

import com.atguigu.springcloud.bean.Movie;
import com.atguigu.springcloud.bean.User;

@Component
public class MovieFeignExceptionHandlerException implements MovieService{

	@Override
	public Movie getMovieName(Integer id) {
		
		Movie movie = new Movie();
		movie.setId(-1);
		movie.setMovieName("未查询到此电影");

		return movie;
	}

	
}

Controller类：UserController.java

package com.atguigu.springcloud.controller;

import java.util.HashMap;
import java.util.Map;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import com.atguigu.springcloud.bean.Movie;
import com.atguigu.springcloud.bean.User;
import com.atguigu.springcloud.service.MovieFeignExceptionHandlerException;
import com.atguigu.springcloud.service.MovieService;
import com.atguigu.springcloud.service.UserService;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;

//@FeignClient(value="CLOUD-PROVIDER-MOVIE") //与被调用端的服务名称一致
@Controller
public class UserController {

	@Autowired
	UserService userService;
	
	@Autowired
	MovieService movieService;

	
	@ResponseBody
	@RequestMapping("/getUserById/{id}")
	public User getUserById(@PathVariable("id") Integer id) {
		
		return userService.getUserById(id);
	}
	
	@ResponseBody
	@RequestMapping("/buyMovie/{userId}/{movieId}")
	public Map<String,Object> buyMovie(@PathVariable("userId")Integer userId,
									   @PathVariable("movieId")Integer movieId){
		
		Map<String, Object> map = new HashMap<String, Object>();
		Movie movie = movieService.getMovieName(movieId);
		User user = userService.getUserById(userId);
		map.put("user", user);
		map.put("movie", movie);
		return map;
	}
}

但是Hystrix Dashboard监控页面一直显示Loading
在这里插入图片描述
经查询得知，因为pom文件中的springboot版本过高导致系统不兼容，更改前的pom文件代码

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    
    <groupId>com.atguigu.springcloud</groupId>
    <artifactId>cloud-consumer-user-Feign</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>cloud-consumer-user-Feign</name>
    <description>用户服务-Feign远程调用</description>

    <properties>
        <java.version>1.8</java.version>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <spring-boot.version>2.4.1</spring-boot.version>
        <spring-cloud.version>2020.0.0-M6</spring-cloud.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        
        <!-- https://mvnrepository.com/artifact/org.springframework.cloud/spring-cloud-starter-netflix-hystrix -->
		<dependency>
		    <groupId>org.springframework.cloud</groupId>
		    <artifactId>spring-cloud-starter-netflix-hystrix</artifactId>
		    <version>2.2.2.RELEASE</version>
		</dependency>
		
<!-- 		健康监测配置依赖 -->
		<dependency>
        	<groupId>org.springframework.boot</groupId>
        	<artifactId>spring-boot-starter-actuator</artifactId>
		</dependency>
		
		<!-- https://mvnrepository.com/artifact/org.springframework.cloud/spring-cloud-starter-netflix-hystrix-dashboard -->
		<dependency>
		    <groupId>org.springframework.cloud</groupId>
		    <artifactId>spring-cloud-starter-netflix-hystrix-dashboard</artifactId>
		    <version>2.2.0.RELEASE</version>
		</dependency>

        
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-openfeign</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        
        <dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-openfeign</artifactId>
		</dependency>
    
    </dependencies>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>${spring-cloud.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-dependencies</artifactId>
                <version>${spring-boot.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.8.1</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                    <encoding>UTF-8</encoding>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <version>2.4.1</version>
                <configuration>
                    <mainClass>com.atguigu.springcloud.CloudConsumerUserFeignApplication</mainClass>
                </configuration>
                <executions>
                    <execution>
                        <id>repackage</id>
                        <goals>
                            <goal>repackage</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>

    <repositories>
        <repository>
            <id>spring-milestones</id>
            <name>Spring Milestones</name>
            <url>https://repo.spring.io/milestone</url>
        </repository>
    </repositories>

</project>

将其更改成下面的内容即可正常显示

<?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">
	<modelVersion>4.0.0</modelVersion>
	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.1.6.RELEASE</version>
		<relativePath /> <!-- lookup parent from repository -->
	</parent>
	<groupId>com.atguigu.springcloud</groupId>
	<artifactId>cloud-provider-user-feign</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<name>cloud-provider-user-feign</name>
	<description>用户服务-用于查询用户信息和购买电影票的功能</description>

	<properties>
		<java.version>1.8</java.version>
		<spring-cloud.version>Greenwich.SR2</spring-cloud.version>
		<maven-jar-plugin.version>2.6</maven-jar-plugin.version>
	</properties>

	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
		</dependency>

		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>

		<!-- feign模块：用于远程调用。声明式客户端工具。 -->
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-openfeign</artifactId>
		</dependency>


		<!-- 引入hystrix进行服务熔断 -->
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-netflix-hystrix</artifactId>
		</dependency>

		<!-- 健康监控模块 -->
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-actuator</artifactId>
		</dependency>

		<!-- 熔断器使用的监控系统 -->
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-netflix-hystrix-dashboard</artifactId>
		</dependency>

	</dependencies>

	<dependencyManagement>
		<dependencies>
			<dependency>
				<groupId>org.springframework.cloud</groupId>
				<artifactId>spring-cloud-dependencies</artifactId>
				<version>${spring-cloud.version}</version>
				<type>pom</type>
				<scope>import</scope>
			</dependency>
		</dependencies>
	</dependencyManagement>

	<build>
		<plugins>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
			</plugin>
		</plugins>
	</build>

</project>