1、jetty九、tomcat7 + html5
一、server---pom.xml: javascript
<!-- j2ee --> <dependency> <groupId>javax</groupId> <artifactId>javaee-api</artifactId> <version>7.0</version> <scope>provided</scope> </dependency>
二、server---java代码:html
package com.bluedon.websocket; import java.io.IOException; import java.util.concurrent.CopyOnWriteArraySet; import javax.websocket.OnClose; import javax.websocket.OnError; import javax.websocket.OnMessage; import javax.websocket.OnOpen; import javax.websocket.Session; import javax.websocket.server.ServerEndpoint; //该注解用来指定一个URI,客户端能够经过这个URI来链接到WebSocket。相似Servlet的注解mapping。无需在web.xml中配置。 @ServerEndpoint("/webSocketServer") public class WebSocketServer { //静态变量,用来记录当前在线链接数。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,用来存放每一个客户端对应的MyWebSocket对象。若要实现服务端与单一客户端通讯的话,可使用Map来存放,其中Key能够为用户标识 private static CopyOnWriteArraySet<WebSocketServer> webSocketSet = new CopyOnWriteArraySet<WebSocketServer>(); //与某个客户端的链接会话,须要经过它来给客户端发送数据 private Session session; /** * 链接创建成功调用的方法 * @param session 可的参数。session为与某个客户端的链接会话,须要经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("新链接加入!当前在线人数为" + getOnlineCount()); } /** * 链接关闭调用的方法 */ @OnClose public void onClose(){ webSocketSet.remove(this); //从set中删除 subOnlineCount(); //在线数减1 System.out.println("一链接关闭!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(WebSocketServer 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同。没有用注解,是根据本身须要添加的方法。 * @param message * @throws IOException */ public void sendMessage(String message) throws IOException{ this.session.getBasicRemote().sendText(message); //this.session.getAsyncRemote().sendText(message); } public static synchronized int getOnlineCount() { return onlineCount; } public static synchronized void addOnlineCount() { WebSocketServer.onlineCount++; } public static synchronized void subOnlineCount() { WebSocketServer.onlineCount--; } }
三、html5:html5
<body> Welcome<br/><input id="text" type="text"/> <button onclick="send()">发送消息</button> <hr/> <button onclick="closeWebSocket()">关闭WebSocket链接</button> <hr/> <div id="message"></div> </body> <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:8080/websocket/webSocketServer"); } else { alert('当前浏览器 Not support websocket') } //链接发生错误的回调方法 websocket.onerror = function (e) { setMessageInnerHTML("WebSocket链接发生错误"); }; //链接成功创建的回调方法 websocket.onopen = function () { setMessageInnerHTML("WebSocket链接成功"); } //接收到消息的回调方法 websocket.onmessage = function (event) { setMessageInnerHTML(event.data); } //链接关闭的回调方法 websocket.onclose = function () { setMessageInnerHTML("WebSocket链接关闭"); } //监听窗口关闭事件,当窗口关闭时,主动去关闭websocket链接,防止链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) { document.getElementById('message').innerHTML += innerHTML + '<br/>'; } //关闭WebSocket链接 function closeWebSocket() { websocket.close(); } //发送消息 function send() { var message = document.getElementById('text').value; websocket.send(message); } </script>
2、jetty九、tomcat7 + 客户端java
一、服务端同上
二、客户端web
pom.xml:api
<dependency> <groupId>org.glassfish.tyrus.bundles</groupId> <artifactId>tyrus-standalone-client</artifactId> <version>1.13</version> </dependency> 或者 <dependency> <groupId>org.glassfish.tyrus</groupId> <artifactId>tyrus-client</artifactId> <version>1.1</version> </dependency> <dependency> <groupId>org.glassfish.tyrus</groupId> <artifactId>tyrus-container-grizzly</artifactId> <version>1.1</version> </dependency>
代码:浏览器
public class test { /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub t1(); } public static void t1() { WebsocketClient c = new WebsocketClient(); WebsocketClient.connect(c, "ws://localhost:8088/websockets/webSocketServer"); c.sendUserInfo("测试"); try { Thread.sleep(100000); } catch (InterruptedException e) { // TODO Auto-generated catch block e.printStackTrace(); } } } @ClientEndpoint public class WebsocketClient { private Session session; @OnOpen public void init(Session session) { this.session = session; } @OnMessage public void onMessage(String userInfo) { System.out.println("client receiver String " + userInfo); } @OnError public void handleError(Throwable thw) { if (thw instanceof DecodeException) { Logger.getLogger("lwl") .info(session.getId() + " Error decoding incoming message: " + ((DecodeException) thw).getText()); } else { Logger.getLogger("lwl").info(session.getId() + " Client WebSocket error: " + thw.getMessage()); } } /** * 创建于服务端的链接 * * @param client * @param path * @return */ public static Session connect(WebsocketClient clientEndpoint, String path) { WebSocketContainer wsc = ContainerProvider.getWebSocketContainer(); try { return wsc.connectToServer(clientEndpoint, new URI(path)); } catch (Exception e) { e.printStackTrace(); } return null; } /** * 向服务端发送数据 * * @param userInfo */ public void sendUserInfo(String text) { try { this.session.getBasicRemote().sendText(text); } catch (IOException e) { e.printStackTrace(); } } /** * 断开与服务端的链接 */ public void disconnect() { if (this.session != null) { try { this.session.close(); } catch (IOException ioe) { System.out.println("Error closing the session: " + ioe); } } } }
3、客户端+服务端(不依赖与tomcat和jetty)
一、客户端pom.xml、代码同(二)
二、服务端
pom.xml:tomcat
<dependency> <groupId>org.glassfish.tyrus</groupId> <artifactId>tyrus-server</artifactId> <version>1.1</version> </dependency> <dependency> <groupId>org.glassfish.tyrus</groupId> <artifactId>tyrus-container-grizzly</artifactId> <version>1.1</version> </dependency>
代码:安全
public class WebSocketServerStatic { public static void main(String[] args) { runServer(); } public static void runServer() { Server server = new Server("localhost", 8080, "/websocket", WebSocketServer.class); try { server.start(); Thread.currentThread().join(); } catch (Exception e) { throw new RuntimeException(e); } finally { } } } @ServerEndpoint("/webSocketServer") public class WebSocketServer { //静态变量,用来记录当前在线链接数。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,用来存放每一个客户端对应的MyWebSocket对象。若要实现服务端与单一客户端通讯的话,可使用Map来存放,其中Key能够为用户标识 private static CopyOnWriteArraySet<WebSocketServer> webSocketSet = new CopyOnWriteArraySet<WebSocketServer>(); //与某个客户端的链接会话,须要经过它来给客户端发送数据 private Session session; /** * 链接创建成功调用的方法 * @param session 可的参数。session为与某个客户端的链接会话,须要经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("新链接加入!当前在线人数为" + getOnlineCount()); } /** * 链接关闭调用的方法 */ @OnClose public void onClose(){ webSocketSet.remove(this); //从set中删除 subOnlineCount(); //在线数减1 System.out.println("一链接关闭!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(WebSocketServer 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同。没有用注解,是根据本身须要添加的方法。 * @param message * @throws IOException */ public void sendMessage(String message) throws IOException{ this.session.getBasicRemote().sendText(message); //this.session.getAsyncRemote().sendText(message); } public static synchronized int getOnlineCount() { return onlineCount; } public static synchronized void addOnlineCount() { WebSocketServer.onlineCount++; } public static synchronized void subOnlineCount() { WebSocketServer.onlineCount--; } }