{"id":35056,"date":"2025-05-02T07:25:57","date_gmt":"2025-05-01T23:25:57","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/35056.html"},"modified":"2025-05-02T07:25:57","modified_gmt":"2025-05-01T23:25:57","slug":"%e6%9c%8d%e5%8a%a1%e5%99%a8%e4%b8%bb%e5%8a%a8%e5%8f%91%e9%80%81%e5%93%8d%e5%ba%94%ef%bc%9f%e8%81%8a%e5%a4%a9%e6%a8%a1%e5%9d%97%e5%a6%82%e4%bd%95%e5%ae%9e%e7%8e%b0%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/35056.html","title":{"rendered":"\u670d\u52a1\u5668\u4e3b\u52a8\u53d1\u9001\u54cd\u5e94\uff1f\u804a\u5929\u6a21\u5757\u5982\u4f55\u5b9e\u73b0\uff1f"},"content":{"rendered":"

\u4e00\u3001\u80cc\u666f\u77e5\u8bc6<\/h2>\n

\u5f53\u6211\u4eec\u5728\u67d0\u804a\u5929\u754c\u9762\u4e2d\u53d1\u9001\u4e00\u4e2a\u6d88\u606f\u65f6，\u5982A\u7ed9B\u53d1\u9001\u4e86\u4e00\u4e2a\u6d88\u606f，\u800cB\u9a6c\u4e0a\u5c31\u6536\u5230，\u4ed4\u7ec6\u601d\u8003\u4f1a\u53d1\u73b0\u4ee5\u4e0b\u95ee\u9898\u00a0 \u00a0：<\/p>\n

1. A\u7ed9\u670d\u52a1\u5668\u53d1\u9001\u8bf7\u6c42，\u4f46\u670d\u52a1\u5668\u5374\u7ed9B\u53d1\u9001\u4e86\u54cd\u5e94<\/p>\n

2.B\u6ca1\u6709\u5411\u670d\u52a1\u5668\u53d1\u9001\u8bf7\u6c42，\u5374\u6536\u5230\u4e86\u54cd\u5e94<\/p>\n

\"\"<\/p>\n<\/p>\n

\u5f88\u660e\u663e，\u5355\u7eaf\u7684\u4f7f\u7528HTTP\u534f\u8bae\u5f88\u96be\u505a\u5230\u8fd9\u4e00\u70b9，\u56e0\u6b64\u9700\u8981\u4f7f\u7528\u53e6\u4e00\u79cd\u5e94\u7528\u5c42\u534f\u8bae\u2014\u2014WebSocket<\/p>\n

\n

\u4e8c\u3001\u4e86\u89e3WebSocket\u62a5\u6587\u683c\u5f0f<\/h2>\n

2.1 \u7b80\u5355\u4e86\u89e3websocket\u62a5\u6587\u683c\u5f0f<\/h4>\n

\u00a0\"\"<\/p>\n

1.FIN（\u00a0\u7ed3\u675f\u6807\u5fd7\u4f4d）：\u8868\u793a\u662f\u5426\u5173\u95ed\u8fde\u63a5；<\/p>\n

2.RSV1~RSV2（\u4fdd\u7559\u4f4d） ：\u4e3a\u540e\u7eed\u53ef\u80fd\u7684\u529f\u80fd\u6269\u5c55\u4fdd\u7559\u00a0<\/p>\n

3.opcode（\u64cd\u4f5c\u7801）：\u6709\u591a\u4e2a，\u7528\u4e8e\u5224\u65ad\u5982\u4f55\u5904\u7406\u6570\u636e（\u59821\u8868\u793a\u6587\u672c\u6570\u636e）\u00a0<\/p>\n

4.MASK（\u63a9\u7801）：\u4e0e\u6570\u636e\u5b89\u5168\u76f8\u5173<\/p>\n<\/p>\n

5. 1)Payload len（\u8f7d\u8377）：7\u4e2abit，\u8868\u793a0-127\u5b57\u8282<\/p>\n

\u00a0 \u00a0 2)Extended payload length（\u6269\u5c55\u8f7d\u8377）：16\u4e2abit，<\/p>\n

\u00a0 \u00a0 3)Extend payload length continued（\u6269\u5c55\u8f7d\u8377）：64\u4e2abit<\/p>\n

（\u5982\u679cpayload len\u5c0f\u4e8e126 ,\u6a21\u5f0f1\u751f\u6548，\u5982\u679c\u7b49\u4e8e126，\u6a21\u5f0f2\u751f\u6548，\u7b49\u4e8e127，\u6a21\u5f0f3\u751f\u6548）<\/p>\n<\/p>\n

6.payload data（\u8f7d\u8377）<\/p>\n

\n

2.2 \u4e86\u89e3WebSocket\u63e1\u624b\u8fc7\u7a0b<\/h4>\n

WebSocket\u662f\u7531HTTP\u5347\u7ea7\u800c\u6210：<\/p>\n

\"\"\u00a0\u5728\u8fd9\u4e4b\u540e\u5c31\u5efa\u7acb\u597d\u4e86WebSocket\u8fde\u63a5，\u540e\u7eed\u5c31\u901a\u8fc7WebSocket\u8fdb\u884c\u6570\u636e\u4f20\u8f93\u4e86<\/p>\n

\n

\u4e09\u3001\u57fa\u4e8eWebSocket\u7f16\u5199\u4ee3\u7801<\/h2>\n

\u4f7f\u7528WebSocket，\u9700\u8981\u5f15\u5165\u76f8\u5173\u4f9d\u8d56：<\/p>\n

<dependency>
\n <groupId>org.springframework.boot<\/groupId>
\n <artifactId>spring-boot-starter-websocket<\/artifactId>
\n<\/dependency> <\/p>\n

3.1 \u7f16\u5199\u670d\u52a1\u5668\u793a\u4f8b\u4ee3\u7801<\/h4>\n

\u7f16\u5199\u670d\u52a1\u5668\u4ee3\u7801\u4e3b\u8981\u6709\u4ee5\u4e0b\u51e0\u6b65：<\/p>\n

1. \u521b\u5efa\u4e00\u4e2a\u7c7b\u7ee7\u627fTextWebSocketHandler（\u5904\u7406\u901a\u4fe1\u6d41\u7a0b）；<\/p>\n

2. \u91cd\u5199afterConnectionEstablished\u3001handleTextMessage\u3001handleTransportError\u3001afterConnectionClosed\u56db\u4e2a\u65b9\u6cd5；<\/p>\n

3.\u5b9e\u73b0WebSocketConfigurer\u63a5\u53e3，\u91cd\u5199\u65b9\u6cd5\u5e76\u914d\u7f6e\u8def\u7531（\u5173\u8054\u5bf9\u5e94Handler\u7684\u8def\u5f84）；<\/p>\n

\u4e00\u3001\u7ee7\u627fTextWebSockeHandler\u5e76\u4ece\u5199\u4e0a\u8ff04\u4e2a\u65b9\u6cd5：<\/p>\n

@Component
\npublic class TestWebSocketController extends TextWebSocketHandler {
\n @Override
\n public void afterConnectionEstablished(WebSocketSession session) throws Exception {
\n \/\/\u8fd9\u4e2a\u65b9\u6cd5\u4f1a\u5728websocket\u8fde\u63a5\u5efa\u7acb\u4e4b\u540e，\u81ea\u52a8\u8c03\u7528
\n System.out.println("TestSocket \u8fde\u63a5\u6210\u529f");
\n }<\/p>\n

@Override
\n protected void handleTextMessage(WebSocketSession session, TextMessage message) throws Exception {
\n \/\/websocket\u6536\u5230\u6d88\u606f\u65f6\u81ea\u52a8\u8c03\u7528
\n System.out.println("TestSocket \u6536\u5230\u6d88\u606f" + message.toString());
\n \/\/session\u662f\u4e2a\u4f1a\u8bdd，\u8bb0\u5f55\u4e86\u901a\u4fe1\u53cc\u65b9\u662f\u8c01
\n session.sendMessage(message);
\n }<\/p>\n

@Override
\n public void handleTransportError(WebSocketSession session, Throwable exception) throws Exception {
\n \/\/\u8fde\u63a5\u5f02\u5e38\u65f6\u81ea\u52a8\u8c03\u7528
\n System.out.println("TestSocket \u8fde\u63a5\u5f02\u5e38");
\n }<\/p>\n

@Override
\n public void afterConnectionClosed(WebSocketSession session, CloseStatus status) throws Exception {
\n \/\/\u8fde\u63a5\u6b63\u5e38\u5173\u95ed\u540e，\u81ea\u52a8\u8c03\u7528
\n System.out.println("Test Socket \u8fde\u63a5\u6b63\u5e38\u5173\u95ed");
\n }
\n}<\/p>\n

\u5176\u4e2d，handleTextMessage\u662f\u8fd9\u51e0\u4e2a\u65b9\u6cd5\u7684\u91cd\u70b9，\u4e3b\u8981\u7684\u4ee3\u7801\u903b\u8f91\u90fd\u662f\u5728\u8fd9\u91cc\u5b9e\u73b0，\u5f62\u53c2message\u8868\u793a\u8f7d\u8377\u4e2d\u7684\u6570\u636e，\u9700\u8981\u505a\u7684\u5c31\u662f\u5c06\u8fd9\u91cc\u7684message\u53d1\u9001\u7ed9\u901a\u4fe1\u53cc\u65b9\u7684\u53e6\u4e00\u65b9<\/p>\n<\/p>\n

\u4e8c\u3001\u5b9e\u73b0WebSocketConfigurer\u63a5\u53e3，\u914d\u7f6e\u8def\u7531： \u00a0<\/p>\n

@Configuration
\n@EnableWebSocket\/\/\u542f\u52a8websocket
\npublic class WebSocketConfig implements WebSocketConfigurer {
\n @Autowired
\n private TestWebSocketController testWebSocketController;<\/p>\n

@Autowired
\n private WebSocketController webSocketController;<\/p>\n

@Override
\n public void registerWebSocketHandlers(WebSocketHandlerRegistry registry) {
\n\/\/ \u901a\u8fc7\u8fd9\u4e2a\u65b9\u6cd5，\u521b\u5efa\u597d\u7684handler\u7c7b\u6ce8\u518c\u5230\u5177\u4f53\u7684\u8def\u5f84
\n\/\/ \u5f53\u6d4f\u89c8\u5668，websocket\u8bf7\u6c42\u8def\u5f84\u65f6\u201c\/test\u201d\u65f6，\u5c31\u4f1a\u8c03\u7528\u5230TestWebSocketController\u8fd9\u4e2a\u7c7b\u91cc\u7684\u65b9\u6cd5
\n registry.addHandler(testWebSocketController,"\/test");
\n }
\n}<\/p>\n

\n

3.2 \u7f16\u5199\u524d\u7aef\u793a\u4f8b\u4ee3\u7801<\/h4>\n

\u00a0<\/p>\n

<!DOCTYPE html>
\n<html lang="en"><\/p>\n

<head>
\n <meta charset="UTF-8">
\n <meta name="viewport" content="width=device-width, initial-scale=1.0">
\n <title>websocket \u6d4b\u8bd5<\/title>
\n<\/head><\/p>\n

<body>
\n <input type="text" id="message">
\n <button id="send-button">\u53d1\u9001<\/button><\/p>\n

<script>
\n \/\/\u7f16\u5199js\u4f7f\u7528websocket\u7684\u4ee3\u7801
\n \/\/\u521b\u5efa\u4e00\u4e2awebsocket\u5b9e\u4f8b
\n let websocket = new WebSocket("ws:\/\/127.0.0.1:8080\/test");<\/p>\n

\/\/\u7ed9websocket\u6ce8\u518c\u56de\u8c03\u51fd\u6570
\n websocket.onopen = function () {
\n \/\/\u8fde\u63a5\u5efa\u7acb\u5b8c\u6210\u540e，\u81ea\u52a8\u6267\u884c
\n console.log("websocket \u8fde\u63a5\u6210\u529f");
\n }<\/p>\n

websocket.onclose = function () {
\n \/\/\u8fde\u63a5\u65ad\u5f00\u540e，\u81ea\u52a8\u6267\u884c
\n console.log("websocket \u8fde\u63a5\u65ad\u5f00");
\n }<\/p>\n

websocket.onerror = function () {
\n \/\/\u8fde\u63a5\u5f02\u5e38\u65f6，\u81ea\u52a8\u6267\u884c
\n console.log("websocket \u8fde\u63a5\u5f02\u5e38");
\n }<\/p>\n

websocket.onmessage = function (e) {
\n \/\/\u6536\u5230\u6d88\u606f\u65f6，\u81ea\u52a8\u6267\u884c
\n console.log("websocket \u6536\u5230\u6d88\u606f" + e.data);
\n }<\/p>\n

let messageInput = document.querySelector('#message');
\n let sendButton = document.querySelector('#send-button');
\n sendButton.onclick = function() {
\n console.log("websocket \u53d1\u9001\u6d88\u606f：" + messageInput.value);
\n websocket.send(messageInput.value);
\n }
\n <\/script>
\n<\/body><\/p>\n

<\/html> <\/p>\n

\n

3.3 \u6548\u679c\u5c55\u793a<\/h4>\n

\"\"<\/p>\n

\n

\u56db\u3001\u57fa\u4e8eWebSocket\u5b9e\u73b0\u7f51\u9875\u804a\u5929\u9879\u76ee\u7684\u6d88\u606f\u8f6c\u53d1<\/h2>\n

\u8fd9\u91cc\u7684\u7f51\u9875\u804a\u5929\u9879\u76ee\u548c\u7f51\u9875\u804a\u5929\u76f8\u4f3c，\u5982：<\/p>\n

\"\"<\/p>\n

\u5177\u4f53\u5b9e\u73b0\u5206\u4e3a\u4ee5\u4e0b\u51e0\u6b65：<\/p>\n

\u4e00\u3001\u7ea6\u5b9a\u524d\u540e\u7aef\u4ea4\u4e92\u63a5\u53e3<\/p>\n

\"\"<\/p>\n

\n

\u4e8c\u3001\u5b9e\u73b0TextWebSocketHandler\u63a5\u53e3<\/p>\n

1> \u670d\u52a1\u5668\u6d88\u606f\u8f6c\u53d1\u903b\u8f91\u5206\u6790<\/p>\n

\u4e0a\u56fe\u4e86\u89e3\u5230，\u6bcf\u4e2a\u4f1a\u8bdd\u7684\u597d\u53cb\u53ef\u80fd\u662f\u4e00\u4e2a，\u4e5f\u53ef\u80fd\u662f\u591a\u4e2a<\/span>，\u5e76\u4e14\u672a\u4e0a\u7ebf\u7684\u597d\u53cb\u65e0\u6cd5\u63a5\u6536\u6d88\u606f<\/span>，\u800c\u670d\u52a1\u5668\u8f6c\u53d1\u6d88\u606f，\u9700\u8981\u77e5\u9053\u5bf9\u7aef\u7684WebSocketSession,<\/span>\u56e0\u6b64，\u53ef\u4ee5\u4f7f\u7528map\u5b58\u50a8\u4e0a\u7ebf\u7528\u6237\u7684userId \u548c webSocketSession<\/p>\n

1.\u7528\u6237\u4e0a\u7ebf，map\u63d2\u5165\u503c；<\/p>\n

2.\u7528\u6237\u4e0b\u7ebf，map \u5220\u9664\u503c；<\/p>\n

@Component
\n@Slf4j
\npublic class OnLineUserManager {
\n \/\/\u6b64\u5904\u7684 \u54c8\u5e0c\u8868 \u8981\u8003\u8651\u7ebf\u7a0b\u5b89\u5168\u95ee\u9898
\n private ConcurrentHashMap<Integer, WebSocketSession> sessions = new ConcurrentHashMap<>();<\/p>\n

\/\/ 1) \u7528\u6237\u4e0a\u7ebf，\u54c8\u5e0c\u8868\u63d2\u5165\u503c
\n public void online(Integer userId,WebSocketSession session){
\n if(sessions.get(userId) != null){
\n \/\/\u8bf4\u660e\u7528\u6237\u5df2\u7ecf\u4e0a\u7ebf，\u767b\u5f55\u5931\u8d25
\n log.info("[" + userId + "] \u767b\u5f55\u5931\u8d25，\u5df2\u5728\u5176\u5b83\u5730\u65b9\u767b\u5f55！");
\n return;
\n }
\n sessions.put(userId,session);
\n log.info("[" + userId + "] \u4e0a\u7ebf！");
\n }
\n \/\/ 2）\u7528\u6237\u4e0b\u7ebf，\u54c8\u5e0c\u8868\u5220\u9664\u503c
\n public void offline(Integer userId,WebSocketSession session){
\n WebSocketSession exitSession = sessions.get(userId);
\n if(exitSession == session){
\n \/\/\u4e24\u4e2asession\u662f\u540c\u4e00\u4e2a，\u624d\u4e0b\u7ebf
\n sessions.remove(userId);
\n log.info("[" + userId + "] \u4e0b\u7ebf！");
\n }
\n }
\n \/\/ 3）\u6839\u636euserId \u83b7\u53d6 WebSocketSession
\n public WebSocketSession getSession(Integer userId){
\n return sessions.get(userId);
\n }
\n}<\/p>\n

\n

2>\u5b9e\u73b0 TextWebSocketHandler \u63a5\u53e3，\u91cd\u51994\u4e2a\u65b9\u6cd5<\/p>\n

@Slf4j
\n@Component
\npublic class WebSocketController extends TextWebSocketHandler {
\n @Autowired
\n private OnLineUserManager onLineUserManager;<\/p>\n

private ObjectMapper objectMapper = new ObjectMapper();<\/p>\n

@Autowired
\n private MessageMapper messageMapper;<\/p>\n

@Autowired
\n private SessionMapper sessionMapper;<\/p>\n

@Override
\n public void afterConnectionEstablished(WebSocketSession session) throws Exception {
\n log.info("websocket \u8fde\u63a5\u6210\u529f");
\n Integer userId = (Integer) session.getAttributes().get("session_userId");
\n if(userId == null){
\n return;
\n }
\n onLineUserManager.online(userId,session);
\n }<\/p>\n

@Override
\n protected void handleTextMessage(WebSocketSession session, TextMessage message) throws Exception {
\n log.info("websocket \u6536\u5230\u6d88\u606f" + message.toString());
\n \/\/1.\u83b7\u53d6\u7528\u6237\u4fe1\u606f
\n Integer userId = (Integer) session.getAttributes().get("session_userId");
\n String username = (String) session.getAttributes().get("session_username");
\n if(userId == null || username == null){
\n log.info("\u7528\u6237\u672a\u767b\u5f55,\u65e0\u6cd5\u8f6c\u53d1");
\n return;
\n }
\n \/\/2.\u89e3\u6790\u8bf7\u6c42,\u6ce8\u610f\u628ajson\u5b57\u7b26\u4e32\u8f6c\u5316\u4e3ajava\u5bf9\u8c61
\n MessageRequest req = objectMapper.readValue(message.getPayload(), MessageRequest.class);
\n if(req.getType().equals("message")){
\n \/\/\u8f6c\u53d1\u6d88\u606f
\n transferMessage(userId,username,req);
\n }else {
\n log.info("req.type \u6709\u8bef:" + message.getPayload());
\n }
\n }<\/p>\n

\/\/\u901a\u8fc7\u8fd9\u4e2a\u65b9\u6cd5\u8fdb\u884c\u8f6c\u53d1
\n private void transferMessage(Integer fromId, String fromName,MessageRequest req) throws IOException {
\n \/\/1.\u6784\u9020\u5f85\u8f6c\u53d1\u7684\u54cd\u5e94\u5bf9\u8c61
\n MessageResponse messageResponse = new MessageResponse("message",fromId,fromName, req.getSessionId(), req.getContent());
\n \/\/\u8f6c\u6210\u5b57\u7b26\u4e32
\n String responseJson = objectMapper.writeValueAsString(messageResponse);
\n log.info("\u8f6c\u53d1\u6d88\u606f：responseJson" + responseJson);
\n \/\/2.\u6839\u636e\u8bf7\u6c42\u4e2d\u7684sessionId ,\u83b7\u53d6\u5230message_session\u4e2d\u6709\u90a3\u4e9b\u7528\u6237（\u67e5\u8be2\u6570\u636e\u5e93）
\n List<Friend> friends = sessionMapper.selectFriendBySessionId(req.getSessionId(),fromId);
\n \/\/3.\u904d\u5386users，\u901a\u8fc7OnLineUserManager\u83b7\u53d6\u5230websocketsession\u53d1\u9001\u54cd\u5e94,
\n \/\/ ！！！\u4e5f\u8981\u7ed9\u81ea\u5df1\u53d1\u9001\u4e00\u4e2a\u6d88\u606f,\u56e0\u6b64\u9700\u8981\u5c06\u81ea\u5df1\u4e5f\u52a0\u5165friends,\u8ba9\u81ea\u5df1\u53ef\u4ee5\u770b\u5230\u81ea\u5df1\u53d1\u9001\u7684\u6d88\u606f
\n Friend myself = new Friend();
\n myself.setFriendId(fromId);
\n myself.setFriendName(fromName);
\n friends.add(myself);
\n for (Friend friend:friends
\n ) {
\n WebSocketSession webSocketSession = onLineUserManager.getSession(friend.getFriendId());
\n if(webSocketSession == null){
\n \/\/\u7528\u6237\u4e0d\u5728\u7ebf，\u4e0d\u53d1\u9001
\n continue;
\n }
\n webSocketSession.sendMessage(new TextMessage(responseJson));
\n }
\n \/\/4.\u8f6c\u53d1\u7684\u6d88\u606f\u9700\u8981\u5b58\u50a8\u5728\u6570\u636e\u5e93,\u8fd9\u6837\u4e0b\u7ebf\u4e4b\u540e，\u91cd\u65b0\u4e0a\u7ebf\u53ef\u4ee5\u83b7\u53d6\u5386\u53f2\u6d88\u606f
\n \/\/\u5411message\u8868\u5199\u5165\u8bb0\u5f55
\n Message message = new Message();
\n message.setFromId(fromId);
\n message.setSessionId(req.getSessionId());
\n message.setContent(req.getContent());
\n messageMapper.insertMessage(message);
\n }<\/p>\n

@Override
\n public void handleTransportError(WebSocketSession session, Throwable exception) throws Exception {
\n log.info("websocket \u8fde\u63a5\u5f02\u5e38" + exception.toString());
\n Integer userId = (Integer) session.getAttributes().get("session_userId");
\n if(userId == null){
\n return;
\n }
\n onLineUserManager.offline(userId,session);
\n }<\/p>\n

@Override
\n public void afterConnectionClosed(WebSocketSession session, CloseStatus status) throws Exception {
\n log.info("websocket \u8fde\u63a5\u6b63\u5e38\u5173\u95ed" + status.toString());
\n Integer userId = (Integer) session.getAttributes().get("session_userId");
\n if(userId == null){
\n return;
\n }
\n onLineUserManager.offline(userId,session);
\n }
\n}<\/p>\n

\n

3> \u5b9e\u73b0 WebSocketConfigurer \u63a5\u53e3，\u914d\u7f6e\u8def\u7531<\/p>\n

@Configuration
\n@EnableWebSocket\/\/\u542f\u52a8websocket
\npublic class WebSocketConfig implements WebSocketConfigurer {
\n @Autowired
\n private TestWebSocketController testWebSocketController;<\/p>\n

@Autowired
\n private WebSocketController webSocketController;<\/p>\n

@Override
\n public void registerWebSocketHandlers(WebSocketHandlerRegistry registry) {
\n registry.addHandler(webSocketController,"\/WebSocketMessage")
\n \/\/！！！\u7531\u4e8euserId \u548c username \u90fd\u662f\u4fdd\u5b58\u5728httpSession\u4e2d\u7684，\u65e0\u6cd5\u76f4\u63a5\u5728webSocketSession\u4e2d\u4f7f\u7528，\u9700\u8981\u6dfb\u52a0\u4ee5\u4e0b\u5e26\u4ee3\u7801
\n .addInterceptors(new HttpSessionHandshakeInterceptor());
\n }
\n}<\/p>\n

\n

4> \u6d4b\u8bd5\u7ed3\u679c<\/p>\n

\"\"<\/p>\n","protected":false},"excerpt":{"rendered":"

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