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代碼: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; //該註解用來指定一個URI,客戶端能夠經過這個URI來鏈接到WebSocket。相似Servlet的註解mapping。無需在web.xml中配置。 @ServerEndpoint("/webSocketServer") public class WebSocketServer { //靜態變量,用來記錄當前在線鏈接數。應該把它設計成線程安全的。 private static int onlineCount = 0; //concurrent包的線程安全Set,用來存放每一個客戶端對應的MyWebSocket對象。若要實現服務端與單一客戶端通訊的話,可使用Map來存放,其中Key能夠爲用戶標識 private static CopyOnWriteArraySet<WebSocketServer> webSocketSet = new CopyOnWriteArraySet<WebSocketServer>(); //與某個客戶端的鏈接會話,須要經過它來給客戶端發送數據 private Session session; /** * 鏈接創建成功調用的方法 * @param session 可的參數。session爲與某個客戶端的鏈接會話,須要經過它來給客戶端發送數據 */ @OnOpen public void onOpen(Session session){ this.session = session; webSocketSet.add(this); //加入set中 addOnlineCount(); //在線數加1 System.out.println("新鏈接加入!當前在線人數爲" + getOnlineCount()); } /** * 鏈接關閉調用的方法 */ @OnClose public void onClose(){ webSocketSet.remove(this); //從set中刪除 subOnlineCount(); //在線數減1 System.out.println("一鏈接關閉!當前在線人數爲" + getOnlineCount()); } /** * 收到客戶端消息後調用的方法 * @param message 客戶端發送過來的消息 * @param session 可的參數 */ @OnMessage public void onMessage(String message, Session session) { System.out.println("來自客戶端的消息:" + message); //羣發消息 for(WebSocketServer item: webSocketSet){ try { item.sendMessage(message); } catch (IOException e) { e.printStackTrace(); continue; } } } /** * 發生錯誤時調用 * @param session * @param error */ @OnError public void onError(Session session, Throwable error){ System.out.println("發生錯誤"); //error.printStackTrace(); } /** * 這個方法與上面幾個方法不同。沒有用註解,是根據本身須要添加的方法。 * @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()">發送消息</button> <hr/> <button onclick="closeWebSocket()">關閉WebSocket鏈接</button> <hr/> <div id="message"></div> </body> <script type="text/javascript"> var websocket = null; //判斷當前瀏覽器是否支持WebSocket if ('WebSocket' in window) { websocket = new WebSocket("ws://localhost:8080/websocket/webSocketServer"); } else { alert('當前瀏覽器 Not support websocket') } //鏈接發生錯誤的回調方法 websocket.onerror = function (e) { setMessageInnerHTML("WebSocket鏈接發生錯誤"); }; //鏈接成功創建的回調方法 websocket.onopen = function () { setMessageInnerHTML("WebSocket鏈接成功"); } //接收到消息的回調方法 websocket.onmessage = function (event) { setMessageInnerHTML(event.data); } //鏈接關閉的回調方法 websocket.onclose = function () { setMessageInnerHTML("WebSocket鏈接關閉"); } //監聽窗口關閉事件,當窗口關閉時,主動去關閉websocket鏈接,防止鏈接還沒斷開就關閉窗口,server端會拋異常。 window.onbeforeunload = function () { closeWebSocket(); } //將消息顯示在網頁上 function setMessageInnerHTML(innerHTML) { document.getElementById('message').innerHTML += innerHTML + '<br/>'; } //關閉WebSocket鏈接 function closeWebSocket() { websocket.close(); } //發送消息 function send() { var message = document.getElementById('text').value; websocket.send(message); } </script>
2、jetty九、tomcat7 + 客戶端java
一、服務端同上
二、客戶端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>
代碼:瀏覽器
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("測試"); 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()); } } /** * 創建於服務端的鏈接 * * @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; } /** * 向服務端發送數據 * * @param userInfo */ public void sendUserInfo(String text) { try { this.session.getBasicRemote().sendText(text); } catch (IOException e) { e.printStackTrace(); } } /** * 斷開與服務端的鏈接 */ public void disconnect() { if (this.session != null) { try { this.session.close(); } catch (IOException ioe) { System.out.println("Error closing the session: " + ioe); } } } }
3、客戶端+服務端(不依賴與tomcat和jetty)
一、客戶端pom.xml、代碼同(二)
二、服務端
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>
代碼: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 { //靜態變量,用來記錄當前在線鏈接數。應該把它設計成線程安全的。 private static int onlineCount = 0; //concurrent包的線程安全Set,用來存放每一個客戶端對應的MyWebSocket對象。若要實現服務端與單一客戶端通訊的話,可使用Map來存放,其中Key能夠爲用戶標識 private static CopyOnWriteArraySet<WebSocketServer> webSocketSet = new CopyOnWriteArraySet<WebSocketServer>(); //與某個客戶端的鏈接會話,須要經過它來給客戶端發送數據 private Session session; /** * 鏈接創建成功調用的方法 * @param session 可的參數。session爲與某個客戶端的鏈接會話,須要經過它來給客戶端發送數據 */ @OnOpen public void onOpen(Session session){ this.session = session; webSocketSet.add(this); //加入set中 addOnlineCount(); //在線數加1 System.out.println("新鏈接加入!當前在線人數爲" + getOnlineCount()); } /** * 鏈接關閉調用的方法 */ @OnClose public void onClose(){ webSocketSet.remove(this); //從set中刪除 subOnlineCount(); //在線數減1 System.out.println("一鏈接關閉!當前在線人數爲" + getOnlineCount()); } /** * 收到客戶端消息後調用的方法 * @param message 客戶端發送過來的消息 * @param session 可的參數 */ @OnMessage public void onMessage(String message, Session session) { System.out.println("來自客戶端的消息:" + message); //羣發消息 for(WebSocketServer item: webSocketSet){ try { item.sendMessage(message); } catch (IOException e) { e.printStackTrace(); continue; } } } /** * 發生錯誤時調用 * @param session * @param error */ @OnError public void onError(Session session, Throwable error){ System.out.println("發生錯誤"); //error.printStackTrace(); } /** * 這個方法與上面幾個方法不同。沒有用註解,是根據本身須要添加的方法。 * @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--; } }