├── README.md
├── pom.xml
└── src
    └── main
        ├── java
            ├── Monitor.java
            └── com
            │   └── uptop
            │       └── websocket
            │           └── WebSocketTest.java
        ├── resources
            └── applicationContext.xml
        └── webapp
            ├── WEB-INF
                └── web.xml
            └── index.jsp


/README.md:
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1 | # JavaWebSocket
2 | websockt & spring demo
3 | 欢迎多多start哦，关联CSDN文章：http://blog.csdn.net/gisredevelopment/article/details/38392629
4 | 
5 | 
6 | 
7 | 


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/pom.xml:
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 1 | <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 2 |          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
 3 |     <modelVersion>4.0.0</modelVersion>
 4 |     <groupId>me.gacl</groupId>
 5 |     <artifactId>JavaWebSocket</artifactId>
 6 |     <packaging>war</packaging>
 7 |     <version>1.0-SNAPSHOT</version>
 8 |     <name>JavaWebSocket Maven Webapp</name>
 9 |     <url>http://maven.apache.org</url>
10 | 
11 | 
12 |     <properties>
13 |         <!-- spring版本号 -->
14 |         <spring.version>4.0.2.RELEASE</spring.version>
15 |     </properties>
16 | 
17 |     <dependencies>
18 |         <dependency>
19 |             <groupId>javax</groupId>
20 |             <artifactId>javaee-api</artifactId>
21 |             <version>7.0</version>
22 |         </dependency>
23 | 
24 |         <!-- spring核心包 -->
25 |         <dependency>
26 |             <groupId>org.springframework</groupId>
27 |             <artifactId>spring-core</artifactId>
28 |             <version>${spring.version}</version>
29 |         </dependency>
30 |         <dependency>
31 |             <groupId>org.springframework</groupId>
32 |             <artifactId>spring-web</artifactId>
33 |             <version>${spring.version}</version>
34 |         </dependency>
35 |         <dependency>
36 |             <groupId>org.springframework</groupId>
37 |             <artifactId>spring-oxm</artifactId>
38 |             <version>${spring.version}</version>
39 |         </dependency>
40 |         <dependency>
41 |             <groupId>org.springframework</groupId>
42 |             <artifactId>spring-tx</artifactId>
43 |             <version>${spring.version}</version>
44 |         </dependency>
45 | 
46 |         <dependency>
47 |             <groupId>org.springframework</groupId>
48 |             <artifactId>spring-jdbc</artifactId>
49 |             <version>${spring.version}</version>
50 |         </dependency>
51 | 
52 |         <dependency>
53 |             <groupId>org.springframework</groupId>
54 |             <artifactId>spring-webmvc</artifactId>
55 |             <version>${spring.version}</version>
56 |         </dependency>
57 |         <dependency>
58 |             <groupId>org.springframework</groupId>
59 |             <artifactId>spring-aop</artifactId>
60 |             <version>${spring.version}</version>
61 |         </dependency>
62 | 
63 |         <dependency>
64 |             <groupId>org.springframework</groupId>
65 |             <artifactId>spring-context-support</artifactId>
66 |             <version>${spring.version}</version>
67 |         </dependency>
68 |         <dependency>
69 |             <groupId>org.springframework</groupId>
70 |             <artifactId>spring-test</artifactId>
71 |             <version>${spring.version}</version>
72 |         </dependency>
73 | 
74 |         
75 |     </dependencies>
76 |     <build>
77 |         <finalName>JavaWebSocket</finalName>
78 |     </build>
79 | </project>
80 | 


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/src/main/java/Monitor.java:
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 1 | import com.uptop.websocket.WebSocketTest;
 2 | 
 3 | import java.util.Date;
 4 | import java.util.concurrent.Executors;
 5 | import java.util.concurrent.ScheduledExecutorService;
 6 | import java.util.concurrent.TimeUnit;
 7 | 
 8 | 
 9 | public class Monitor implements Runnable {
10 | 
11 | 
12 |     @Override
13 |     public void run() {
14 |         WebSocketTest webSocketTest = new WebSocketTest();
15 |         webSocketTest.sendMsg("当前时间:" + new Date());
16 |     }
17 | 
18 |     public void sendMsg() {
19 |         ScheduledExecutorService newScheduledThreadPool = Executors.newSingleThreadScheduledExecutor();
20 |         newScheduledThreadPool.scheduleWithFixedDelay(new Monitor(), 20, 5, TimeUnit.SECONDS);
21 | 
22 |     }
23 | }
24 | 
25 | 


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/src/main/java/com/uptop/websocket/WebSocketTest.java:
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  1 | package com.uptop.websocket;
  2 | 
  3 | import javax.websocket.*;
  4 | import javax.websocket.server.ServerEndpoint;
  5 | import java.io.IOException;
  6 | import java.util.concurrent.CopyOnWriteArraySet;
  7 | 
  8 | 
  9 | /**
 10 |  * @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,
 11 |  * 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
 12 |  * @author uptop
 13 |  */
 14 | @ServerEndpoint("/websocket")
 15 | public class WebSocketTest {
 16 |     //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。
 17 |     private static int onlineCount = 0;
 18 | 
 19 |     //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
 20 |     public static CopyOnWriteArraySet<WebSocketTest> webSocketSet = new CopyOnWriteArraySet<WebSocketTest>();
 21 | 
 22 |     //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
 23 |     private Session session;
 24 | 
 25 |     /**
 26 |      * 连接建立成功调用的方法
 27 |      *
 28 |      * @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
 29 |      */
 30 |     @OnOpen
 31 |     public void onOpen(Session session) {
 32 |         this.session = session;
 33 |         webSocketSet.add(this);     //加入set中
 34 |         addOnlineCount();           //在线数加1
 35 |         System.out.println("有新连接加入！当前在线人数为" + getOnlineCount());
 36 |     }
 37 | 
 38 |     /**
 39 |      * 连接关闭调用的方法
 40 |      */
 41 |     @OnClose
 42 |     public void onClose() {
 43 |         webSocketSet.remove(this);  //从set中删除
 44 |         subOnlineCount();           //在线数减1
 45 |         System.out.println("有一连接关闭！当前在线人数为" + getOnlineCount());
 46 |     }
 47 | 
 48 |     /**
 49 |      * 收到客户端消息后调用的方法
 50 |      *
 51 |      * @param message 客户端发送过来的消息
 52 |      * @param session 可选的参数
 53 |      */
 54 |     @OnMessage
 55 |     public void onMessage(String message, Session session) {
 56 |         System.out.println("来自客户端的消息:" + message);
 57 |         //群发消息
 58 |         for (WebSocketTest item : webSocketSet) {
 59 |             try {
 60 |                 item.sendMessage(message);
 61 |             } catch (IOException e) {
 62 |                 e.printStackTrace();
 63 |                 continue;
 64 |             }
 65 |         }
 66 |     }
 67 | 
 68 |     /**
 69 |      * 发生错误时调用
 70 |      *
 71 |      * @param session
 72 |      * @param error
 73 |      */
 74 |     @OnError
 75 |     public void onError(Session session, Throwable error) {
 76 |         System.out.println("发生错误");
 77 |         error.printStackTrace();
 78 |     }
 79 | 
 80 |     /**
 81 |      * 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。
 82 |      *
 83 |      * @param message
 84 |      * @throws IOException
 85 |      */
 86 |     public void sendMessage(String message) throws IOException {
 87 |         this.session.getBasicRemote().sendText(message);
 88 | 
 89 |     }
 90 | 
 91 |     public static synchronized int getOnlineCount() {
 92 |         return onlineCount;
 93 |     }
 94 | 
 95 |     public static synchronized void addOnlineCount() {
 96 |         WebSocketTest.onlineCount++;
 97 |     }
 98 | 
 99 |     public static synchronized void subOnlineCount() {
100 |         WebSocketTest.onlineCount--;
101 |     }
102 | 
103 | 
104 |     public void sendMsg(String msg) {
105 |         for (WebSocketTest item : webSocketSet) {
106 |             try {
107 |                 item.sendMessage(msg);
108 |             } catch (IOException e) {
109 |                 e.printStackTrace();
110 |                 continue;
111 |             }
112 |         }
113 |     }
114 | 
115 | 
116 | }
117 | 


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/src/main/resources/applicationContext.xml:
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 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <beans xmlns="http://www.springframework.org/schema/beans"
 3 |        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 4 |        xmlns:context="http://www.springframework.org/schema/context"
 5 |        xsi:schemaLocation="
 6 | 			http://www.springframework.org/schema/beans
 7 | 			http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
 8 | 			http://www.springframework.org/schema/context
 9 | 			http://www.springframework.org/schema/context/spring-context-3.1.xsd">
10 | 
11 | 
12 |     <bean name="monitor" class="Monitor" lazy-init="false"    init-method="sendMsg"></bean>
13 |     </beans>


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/src/main/webapp/WEB-INF/web.xml:
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 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 3 |          xmlns="http://java.sun.com/xml/ns/javaee"
 4 |          xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
 5 | 		  http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
 6 |          version="2.5">
 7 | 
 8 |     <context-param>
 9 |         <param-name>contextConfigLocation</param-name>
10 |         <param-value>classpath:applicationContext.xml</param-value>
11 |     </context-param>
12 |     <listener>
13 |         <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
14 |     </listener>
15 |     <listener>
16 |         <listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>
17 |     </listener>
18 | </web-app>
19 | 


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/src/main/webapp/index.jsp:
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 1 | <%@ page language="java" pageEncoding="UTF-8" %>
 2 | <!DOCTYPE html>
 3 | <html>
 4 | <head>
 5 |     <title>index Page</title>
 6 | </head>
 7 | <body>
 8 |     Welcome<br/><input id="text" type="text"/>
 9 |     <button onclick="send()">发送消息</button>
10 |     <hr/>
11 |     <button onclick="closeWebSocket()">关闭WebSocket连接</button>
12 |     <hr/>
13 |     <div id="message"></div>
14 |     <table id="tb" class="altrowstable">
15 | 		<th align="center"  colspan="9">实时信息监控</th>
16 | 	</table>
17 | </body>
18 | 
19 | <script type="text/javascript">
20 |     var websocket = null;
21 |     //判断当前浏览器是否支持WebSocket
22 |     if ('WebSocket' in window) {
23 |         websocket = new WebSocket("ws://localhost:8080/websocket");
24 |     }
25 |     else {
26 |         alert('当前浏览器 Not support websocket')
27 |     }
28 | 
29 |     //连接发生错误的回调方法
30 |     websocket.onerror = function () {
31 |         setMessageInnerHTML("WebSocket连接发生错误");
32 |     };
33 | 
34 |     //连接成功建立的回调方法
35 |     websocket.onopen = function () {
36 |         setMessageInnerHTML("WebSocket连接成功");
37 |     }
38 | 
39 |     //接收到消息的回调方法
40 |     websocket.onmessage = function (event) {
41 |         setMessageInnerHTML(event.data);
42 |     }
43 | 
44 |     //连接关闭的回调方法
45 |     websocket.onclose = function () {
46 |         setMessageInnerHTML("WebSocket连接关闭");
47 |     }
48 | 
49 |     //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。
50 |     window.onbeforeunload = function () {
51 |         closeWebSocket();
52 |     }
53 | 
54 |     //将消息显示在网页上
55 |     function setMessageInnerHTML(innerHTML) {
56 |     	var msg=innerHTML.split(" - ")
57 | 		
58 | 		var table=document.getElementById("tb");
59 | 
60 | 		 var row;
61 | 		 row=table.insertRow(1);
62 | 		for(var i=0;i<msg.length;i++){
63 | 			 var cell = row.insertCell(i);
64 | 		 	 cell.appendChild(document.createTextNode(msg[i]));
65 | 		}
66 | 		if(table.rows.length>50){
67 | 			table.deleteRow(table.rows.length-1);
68 | 		}
69 |       //  document.getElementById('message').innerHTML += innerHTML + '<br/>';
70 |     }
71 | 
72 |     //关闭WebSocket连接
73 |     function closeWebSocket() {
74 |         websocket.close();
75 |     }
76 | 
77 |     //发送消息
78 |     function send() {
79 |         var message = document.getElementById('text').value;
80 |         websocket.send(message);
81 |     }
82 | </script>
83 | </html>


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