60 lines
2.0 KiB
Java
60 lines
2.0 KiB
Java
package org.example;
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import javax.websocket.OnClose;
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import javax.websocket.OnMessage;
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import javax.websocket.OnOpen;
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import javax.websocket.Session;
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import javax.websocket.server.ServerEndpoint;
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import java.io.IOException;
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import java.util.Set;
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import java.util.concurrent.CopyOnWriteArraySet;
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@ServerEndpoint("/ws")
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public class WsServer {
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private static final Set<Session> sessions = new CopyOnWriteArraySet<>();
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@OnOpen
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public void onOpen(Session session) {
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sessions.add(session);
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System.out.println("WebSocket连接已建立: " + session.getId());
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// 推送所有扫码枪列表给前端（使用修改后的方法名）
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// String deviceListJson = Main.getAllDevicesJson();
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// try {
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// System.out.println("发送设备列表到前端: " + deviceListJson);
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// session.getBasicRemote().sendText(deviceListJson);
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// } catch (IOException e) {
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// e.printStackTrace();
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// }
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}
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@OnMessage
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public void onMessage(String message, Session session) throws IOException {
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System.out.println("收到消息: " + message);
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// 可以根据前端需求，在这里处理命令（比如刷新设备列表）
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if ("refreshDevices".equals(message)) {
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// String deviceListJson = Main.getAllDevicesJson();
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// session.getBasicRemote().sendText(deviceListJson);
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} else {
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session.getBasicRemote().sendText("服务器已收到: " + message);
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}
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}
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@OnClose
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public void onClose(Session session) {
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sessions.remove(session);
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System.out.println("WebSocket连接已关闭: " + session.getId());
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}
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public static void broadcast(String message) {
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for (Session session : sessions) {
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if (session.isOpen()) {
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try {
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session.getBasicRemote().sendText(message);
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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}
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}
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}
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