spring+springmvc实现websoket1

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用注解@ServerEndpoint(“/websocket”)

两种方法实现代码地址(包含相关jar包) :http://pan.baidu.com/s/1dF2ElVV 密码：8x6x
方法1：用注解@ServerEndpoint(“/websocket”)
方法2：spring-websocket-4.3.6.RELEASE.jar实现
注解@ServerEndpoint(“/websocket”)实现websoket(实现定时向浏览器发送定时任务)
配置文件applicationContext-java.xml

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"       xmlns:context="http://www.springframework.org/schema/context"       xsi:schemaLocation="            http://www.springframework.org/schema/beans            http://www.springframework.org/schema/beans/spring-beans-3.1.xsd            http://www.springframework.org/schema/context            http://www.springframework.org/schema/context/spring-context-3.1.xsd">    <bean name="monitor" class="com.spring.java.websocket.Monitor" lazy-init="false"   init-method="sendMsg"></bean>    </beans>

Monitor类

package com.spring.java.websocket;import com.spring.java.websocket.WebSocketTest;import java.util.Date;import java.util.concurrent.Executors;import java.util.concurrent.ScheduledExecutorService;import java.util.concurrent.TimeUnit;public class Monitor implements Runnable {    @Override    public void run() {        WebSocketTest webSocketTest = new WebSocketTest();        webSocketTest.sendMsg("当前时间:" + new Date());    }    public void sendMsg() {        ScheduledExecutorService newScheduledThreadPool = Executors.newSingleThreadScheduledExecutor();        newScheduledThreadPool.scheduleWithFixedDelay(new Monitor(), 20, 5, TimeUnit.SECONDS);    }}

测试类WebSocketTest

package com.spring.java.websocket;import javax.websocket.*;import javax.websocket.server.ServerEndpoint;import java.io.IOException;import java.util.concurrent.CopyOnWriteArraySet;/** * @ServerEndpoint 注解是一个类层次的注解，它的功能主要是将目前的类定义成一个websocket服务器端, * 注解的值将被用于监听用户连接的终端访问URL地址,客户端可以通过这个URL来连接到WebSocket服务器端 * @author uptop */@ServerEndpoint("/websocket")public class WebSocketTest {    //静态变量，用来记录当前在线连接数。应该把它设计成线程安全的。    private static int onlineCount = 0;    //concurrent包的线程安全Set，用来存放每个客户端对应的MyWebSocket对象。若要实现服务端与单一客户端通信的话，可以使用Map来存放，其中Key可以为用户标识    public static CopyOnWriteArraySet<WebSocketTest> webSocketSet = new CopyOnWriteArraySet<WebSocketTest>();    //与某个客户端的连接会话，需要通过它来给客户端发送数据    private Session session;    /**     * 连接建立成功调用的方法     *     * @param session 可选的参数。session为与某个客户端的连接会话，需要通过它来给客户端发送数据     */    @OnOpen    public void onOpen(Session session) {        this.session = session;        webSocketSet.add(this);     //加入set中        addOnlineCount();           //在线数加1        System.out.println("有新连接加入！当前在线人数为" + getOnlineCount());    }    /**     * 连接关闭调用的方法     */    @OnClose    public void onClose() {        webSocketSet.remove(this);  //从set中删除        subOnlineCount();           //在线数减1        System.out.println("有一连接关闭！当前在线人数为" + getOnlineCount());    }    /**     * 收到客户端消息后调用的方法     *     * @param message 客户端发送过来的消息     * @param session 可选的参数     */    @OnMessage    public void onMessage(String message, Session session) {        System.out.println("来自客户端的消息:" + message);        //群发消息        for (WebSocketTest item : webSocketSet) {            try {                item.sendMessage(message);            } catch (IOException e) {                e.printStackTrace();                continue;            }        }    }    /**     * 发生错误时调用     *     * @param session     * @param error     */    @OnError    public void onError(Session session, Throwable error) {        System.out.println("发生错误");        error.printStackTrace();    }    /**     * 这个方法与上面几个方法不一样。没有用注解，是根据自己需要添加的方法。     *     * @param message     * @throws IOException     */    public void sendMessage(String message) throws IOException {        this.session.getBasicRemote().sendText(message);    }    public static synchronized int getOnlineCount() {        return onlineCount;    }    public static synchronized void addOnlineCount() {        WebSocketTest.onlineCount++;    }    public static synchronized void subOnlineCount() {        WebSocketTest.onlineCount--;    }    public void sendMsg(String msg) {        for (WebSocketTest item : webSocketSet) {            try {                item.sendMessage(msg);            } catch (IOException e) {                e.printStackTrace();                continue;            }        }    }}

index.jsp文件

<%@ page language="java" pageEncoding="UTF-8" %><!DOCTYPE html><html><head>    <title>spring-javawebsoket</title></head><body>    Welcome<br/><input id="text" type="text"/>    <button onclick="send()">发送消息</button>    <hr/>    <button onclick="closeWebSocket()">关闭WebSocket连接</button>    <hr/>    <div id="message"></div>    <table id="tb" class="altrowstable">        <th align="center"  colspan="9">实时信息监控</th>    </table></body><script type="text/javascript" src="js/jqueryV2.2.3.min.js"></script><script type="text/javascript">    var websocket = null;    //判断当前浏览器是否支持WebSocket    if ('WebSocket' in window) {        websocket = new WebSocket("ws://localhost:8082/websoket_test/websocket");    }    else {        alert('当前浏览器 Not support websocket')    }    //连接发生错误的回调方法    websocket.onerror = function () {        setMessageInnerHTML("WebSocket连接发生错误");    };    //连接成功建立的回调方法    websocket.onopen = function () {        setMessageInnerHTML("WebSocket连接成功");    }    //接收到消息的回调方法    websocket.onmessage = function (event) {        setMessageInnerHTML(event.data);    }    //连接关闭的回调方法    websocket.onclose = function () {        setMessageInnerHTML("WebSocket连接关闭");    }    //监听窗口关闭事件，当窗口关闭时，主动去关闭websocket连接，防止连接还没断开就关闭窗口，server端会抛异常。    window.onbeforeunload = function () {        closeWebSocket();    }    //将消息显示在网页上    function setMessageInnerHTML(innerHTML) {        var msg=innerHTML.split(" - ")        var table=document.getElementById("tb");         var row;         row=table.insertRow(1);        for(var i=0;i<msg.length;i++){             var cell = row.insertCell(i);             cell.appendChild(document.createTextNode(msg[i]));        }        if(table.rows.length>50){            table.deleteRow(table.rows.length-1);        }      //  document.getElementById('message').innerHTML += innerHTML + '<br/>';    }    //关闭WebSocket连接    function closeWebSocket() {        websocket.close();    }    //发送消息    function send() {        var message = document.getElementById('text').value;        websocket.send(message);    }</script></html>

web.xml文件

<?xml version="1.0" encoding="UTF-8"?><web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"         xmlns="http://java.sun.com/xml/ns/javaee"         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee          http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"         version="2.5">    <context-param>        <param-name>contextConfigLocation</param-name>        <!-- jave websoket -->        <!--                测试地址:http://localhost:8082/websoket_test/index.jsp        <param-value>classpath:applicationContext-java.xml</param-value>         -->         <!-- 测试地址:http://localhost:8082/websoket_test/websocket/login.action?username=ddd -->         <param-value>classpath:applicationContext-java.xml</param-value>    </context-param>    <listener>        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>    </listener>    <listener>        <listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>    </listener>    <servlet>    <servlet-name>springmvc</servlet-name>    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>    <init-param>      <param-name>contextConfigLocation</param-name>      <param-value>classpath:springmvc.xml</param-value>    </init-param>  </servlet>  <servlet-mapping>    <servlet-name>springmvc</servlet-name>    <url-pattern>*.action</url-pattern>  </servlet-mapping>    <filter>    <filter-name>CharacterEncodingFilter</filter-name>    <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>    <init-param>      <param-name>encoding</param-name>      <param-value>utf-8</param-value>    </init-param>  </filter>  <filter-mapping>    <filter-name>CharacterEncodingFilter</filter-name>    <url-pattern>*.action</url-pattern>  </filter-mapping></web-app>

3.访问地址：http://localhost:8082/websoket_test/index.jsp
这里写图片描述

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