Spring+Stomp+ActiveMq实现websocket长连接

Posted 2022-03-15 jeely

tags:

篇首语：本文由小常识网(cha138.com)小编为大家整理，主要介绍了Spring+Stomp+ActiveMq实现websocket长连接相关的知识，希望对你有一定的参考价值。

stomp.js+spring+sockjs+activemq实现websocket长连接，使用java配置。

pom.xml（只列出除了spring基本依赖意外的依赖，spring-version为4.3.3.RELEASE）：

<dependency>
        <groupId>javax.websocket</groupId>
        <artifactId>javax.websocket-api</artifactId>
        <version>1.1</version>
        <scope>provided</scope> 
        <!-- 注意,scope必须为provided,否则runtime会冲突，如果使用tomcat 8,还需要将TOMCAT_HOME/lib下的javax.websocket-api.jar一并删除 -->
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-websocket</artifactId>
        <version>$spring.version</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-messaging</artifactId>
        <version>$spring.version</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jms</artifactId>
      <version>$spring.version</version>
    </dependency>
    <dependency>
      <groupId>org.apache.xbean</groupId>
      <artifactId>xbean-spring</artifactId>
      <version>3.16</version>
    </dependency>
    <dependency>
      <groupId>org.apache.activemq</groupId>
      <artifactId>activemq-core</artifactId>
      <version>5.7.0</version>
    </dependency>
    <dependency>
      <groupId>org.apache.activemq</groupId>
      <artifactId>activemq-pool</artifactId>
      <version>5.12.1</version>
    </dependency>
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-core</artifactId>
      <version>2.8.1</version>
    </dependency>
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-databind</artifactId>
      <version>2.8.1</version>
    </dependency>
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-annotations</artifactId>
      <version>2.8.1</version>
    </dependency>
    <dependency>
        <groupId>io.projectreactor</groupId>
        <artifactId>reactor-net</artifactId>
        <version>2.0.7.RELEASE</version>
    </dependency>
    <dependency>
        <groupId>io.netty</groupId>
        <artifactId>netty-all</artifactId>
        <version>4.0.33.Final</version>
    </dependency>
    <dependency>
        <groupId>io.projectreactor</groupId>
        <artifactId>reactor-core</artifactId>
        <version>2.0.8.RELEASE</version>
    </dependency>

StompConfig.java

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.PropertySource;
import org.springframework.core.env.Environment;
import org.springframework.messaging.simp.config.MessageBrokerRegistry;
import org.springframework.web.socket.config.annotation.AbstractWebSocketMessageBrokerConfigurer;
import org.springframework.web.socket.config.annotation.EnableWebSocketMessageBroker;
import org.springframework.web.socket.config.annotation.StompEndpointRegistry;

/**
 * @EnableWebSocketMessageBroker包含@EnableWebSocket
 * @author TD
 *
 */
@Configuration
@EnableWebSocketMessageBroker
@PropertySource("classpath:activemq.properties")
public class StompConfig extends AbstractWebSocketMessageBrokerConfigurer

    @Autowired
    private Environment env;
    /**
     * 注册代理，暴露节点用于连接。
     */
    @Override
    public void registerStompEndpoints(StompEndpointRegistry registry) 
        // TODO Auto-generated method stub
        registry.addEndpoint("/stompEndPoint.do").withSockJS();
    
    
    /**
     * 修改消息代理的配置，默认处理以/topic为前缀的消息
     * setApplicationDestinationPrefixes：配置请求的根路径，表示通过MessageMapping处理/td/*请求，不会发送到代理
     * enableStompBrokerRelay:配置代理，匹配路径的请求会进入代理：mq等
     */
    @Override
    public void configureMessageBroker(MessageBrokerRegistry registry) 
        /*基于内存实现的stomp代理，单机适用
        registry.enableSimpleBroker("/queue","/topic");
        */
        //以/td为目的地的消息使用MessageMapping控制器处理，不走代理
        registry.setApplicationDestinationPrefixes("/td","/app");
        /**
         * 设置单独发送到某个user需要添加的前缀，用户订阅地址/user/topic/td1地址后会去掉/user，并加上用户名（需要springsecurity支持）等唯一标识组成新的目的地发送回去，
         * 对于这个url来说 加上后缀之后走代理。发送时需要制定用户名:convertAndSendToUser或者sendtouser注解.
        registry.setUserDestinationPrefix("/user")
         */
        /*基于mq实现stomp代理，适用于集群。
         * 以/topic和/queue开头的消息会发送到stomp代理中:mq等。
         * 每个mq适用的前缀不一样且有限制。activemq支持stomp的端口为61613

         */
        registry.enableStompBrokerRelay("/topic","/queue")
        .setRelayHost(env.getProperty("mq.brokenHost"))
        .setRelayPort(Integer.parseInt(env.getProperty("mq.brokenPort")))
        .setSystemLogin(env.getProperty("mq.username"))
        .setSystemPasscode(env.getProperty("mq.password"))
        .setClientLogin(env.getProperty("mq.username"))
        .setClientPasscode(env.getProperty("mq.password"));
        /*
         * systemLogin:设置代理所需的密码
         * client:设置客户端连接代理所需的密码，默认为guest
        */

JSP页面：

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>stomp测试</title>
</head>
<body>
<button onclick="test()">stomp发送(服务端返回信息走订阅2)</button>
<button onclick="test2()">stomp订阅1（@subscribeMapping，不过代理）</button>
<button onclick="test3()">stomp订阅2 ：通过代理</button>
</body>
<script type="text/javascript" src="/spring15_socket/js/sockjs-0.3.4.min.js"></script>
<script type="text/javascript" src="/spring15_socket/js/stomp.js"></script>
<script type="text/javascript">
var url = ‘http://localhost:8089/spring15_socket/stompEndPoint.do‘;
//创建sockjs链接
var sock = new SockJS(url);
//创建stomp客户端
var stomp = Stomp.over(sock);
var msg = JSON.stringify(‘name‘:‘td‘,‘age‘:13);
stomp.connect(,function(frame)
    console.log(‘connecting...‘+frame)
    stomp.send(‘/app/stomp1.do‘,,msg);
)
 
function test()
    stomp.send(‘/app/stomp1.do‘,,msg);
 
function test2()
    stomp.subscribe(‘/app/stomp2.do‘,function(msg)
        console.log("subscribemapping:"+JSON.parse(msg.body).content);
    )
     
 
function test3()
    stomp.subscribe(‘/topic/hello‘,function(msg)
        console.log("topicHello:"+JSON.parse(msg.body).content);
    )
     
 
</script>
</html>

控制器：

package spring15_socket.controller;

import java.sql.SQLException;

import org.springframework.messaging.handler.annotation.MessageExceptionHandler;
import org.springframework.messaging.handler.annotation.MessageMapping;
import org.springframework.messaging.handler.annotation.SendTo;
import org.springframework.messaging.simp.annotation.SubscribeMapping;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

import spring15_socket.bean.User;

@Controller
public class TestController 
    
    
    @RequestMapping(value="/sockjs.do")
    public String test0(Model model)
        return "sockjs";
        
    
    @RequestMapping(value="/stompjs.do")
    public String test1(Model model)
        return "stomp";
        
    
    /**
     * 表示该方法处理客户端发来的/td/stomp1.do或者/app/stomp1.do。
     * sendTo:重新指定发送的位置，默认原路返回（url会加上/topic前缀）
     * 需走代理
     */
    @MessageMapping("/stomp1.do")
    @SendTo("/topic/hello")
    public User handleStomp(User user) 
        System.out.println("stomp接收到客户端的请求："+user);
        user.setName("messagemapping返回user");
        return user;
        
    
    
    /**
     * 用于处理messagemapping抛出的异常，类比exceptionhandler
     * @return
     */
    @MessageExceptionHandler(Exception.class,SQLException.class)
    @SendTo("/topic/errorTopic")
    public User errorHandler(Throwable t) 
        System.out.println("异常统一处理");
        User user = new User();
        user.setName("异常统一处理:"+t.getMessage());;
        return user;
    
    
    
    /**
     * 触发方式和messagemapping一致。
     * sendTo:重新指定发送的位置，默认原路返回（url会加上/topic前缀）
     * 使用subscribemapping不走代理
     */
    @SubscribeMapping("/stomp2.do")
    @SendTo("/topic/hello")
    public User subsTest() 
        User user2 = new User();
        user2.setName("订阅name");
        user2.setPhone("subscribePhone");
        return user2;

进入activemq的控制台，点击connection可以看到stomp连接：（这里连接了两个客户端，可以点击超链接查看连接状态）

技术图片