修复聊天闪退bug，添加对接聊天服务器

entry/src/main/ets/common/ClassRoomService.ets

@@ -7,6 +7,7 @@ import logManager, { LogCategory, LogEventType } from './logtext';
 import settingsService from './SettingsService';
 import { DatabaseService } from './DatabaseService';
 import http from '@ohos.net.http';
+import { JSON } from '@kit.ArkTS';
 
 // 课堂会话状态
 export enum ClassSessionStatus {
@@ -107,6 +108,22 @@ export class MessageModel {
     this.content = content;
     this.timestamp = new Date();
   }
+
+  static fromJSON(jsons: string): MessageModel {
+    let json = JSON.parse(jsons) as Map<string,object>
+    const msg = new MessageModel(
+      json["id"] as string,
+      json["senderId"] as string,
+      json["senderName"] as SenderRole,
+      json["content"] as string
+    );
+    msg.timestamp = new Date();
+    return msg;
+  }
+
+  public useTime(){
+    this.timestamp = new Date()
+  }
 }
 
 // 题目模型
@@ -847,7 +864,7 @@ export class ClassRoomService {
       } else {
         // Enhanced error logging with response details
         hilog.error(TIAN_CHANNEL_DOMAIN_ID, TIAN_CHANNEL_TAG, `消息发送失败: ${response.message || '未知错误'}`);
-        logManager.error(LogCategory.CLASS, `Send message failed: ${response.message || 'Unknown error'}, Response data: ${JSON.stringify(response.data || {})}`);
+        logManager.error(LogCategory.CLASS, `Send message failed: ${response.message || 'Unknown error'}, Response data: ${JSON.stringify(response.data)}`);
         hilog.info(TIAN_CHANNEL_DOMAIN_ID, TIAN_CHANNEL_TAG, `========= 消息发送失败 =========`);
         return false;
       }

entry/src/main/ets/common/DatabaseService.ets

@@ -51,13 +51,16 @@ export interface UserInfo {
 export interface ApiConfig {
   baseUrl: string;
   timeout: number;
+  websocketDomain: string
 }
 
 // 定义API服务配置
 const API_CONFIG: ApiConfig = {
   // 修改为用户实际使用的服务器地址
   baseUrl: 'http://139.155.155.67:2342/api',
-  timeout: 10000  // 10秒超时
+  timeout: 10000, // 10秒超时
+  websocketDomain: "139.155.155.67:4233",
+  // websocketDomain: "198.18.0.1:8080",
 };
 
 // 修正JSON响应类型处理
@@ -80,7 +83,6 @@ export class DatabaseService {
   private userCache: Map<string, UserModel> = new Map();
   // 缓存验证结果
   private authCache: Map<string, boolean> = new Map();
-  
   // Callbacks for user data changes
   private userDataChangeCallbacks: (() => void)[] = [];
 
@@ -96,6 +98,10 @@ export class DatabaseService {
     return DatabaseService.instance;
   }
 
+  public static getApiConfig():ApiConfig{
+    return API_CONFIG;
+  }
+
   // 创建HTTP请求客户端
   private createHttpClient(): http.HttpRequest {
     let httpRequest = http.createHttp();
@@ -214,9 +220,15 @@ export class DatabaseService {
     }
 
     // 默认值 - 仅用于开发/测试
-    if (account === '2') return '张三';
+    if (account === '2') {
-    if (account === '9222') return '李华';
+      return '张三';
-    if (account === '0') return '教师demo';
+    }
+    if (account === '9222') {
+      return '李华';
+    }
+    if (account === '0') {
+      return '教师demo';
+    }
 
     return '';
   }

entry/src/main/ets/pages/ClassLivePage.ets

@@ -20,6 +20,9 @@ import {
 import logManager, { LogCategory, LogEventType } from '../common/logtext';
 import http from '@ohos.net.http';
 import hilog from '@ohos.hilog';
+import WebSocketMessage from '../util/WebsocketMessage';
+import { BusinessError } from '@kit.BasicServicesKit';
+import { DatabaseService } from '../common/DatabaseService';
 
 // 添加hilog和tianChannel常量
 const TIAN_CHANNEL_DOMAIN_ID = 0x00201; // 自定义域ID
@@ -133,8 +136,11 @@ struct ClassLivePage {
   };
   // 用于服务实例
   private classRoomService: ClassRoomService = ClassRoomService.getInstance();
+  wsClient: WebSocketMessage = new WebSocketMessage(DatabaseService.getApiConfig().websocketDomain, "111111")
 
   aboutToAppear() {
+    this.wsClient.connect();
+
     // 注册语言变化的回调
     settingsService.registerLanguageChangeCallback(() => {
       this.texts = settingsService.getTextResources();
@@ -170,6 +176,19 @@ struct ClassLivePage {
     this.registerEventListeners();
 
     logManager.info(LogCategory.CLASS, LogEventType.PAGE_APPEAR, 'ClassLivePage');
+
+
+    this.wsClient.setOnMessage((data) => {
+      hilog.debug(TIAN_CHANNEL_DOMAIN_ID, TIAN_CHANNEL_TAG, "收到消息: " + data.toString());
+      try {
+        let j: MessageModel = MessageModel.fromJSON(data.toString()) //JSON.parse(data.toString()) as MessageModel
+        this.messages.push(j)
+        hilog.debug(TIAN_CHANNEL_DOMAIN_ID, TIAN_CHANNEL_TAG, "渲染: " + j);
+        // this.messages.push(data.toString())
+      } catch (e) {
+        hilog.debug(TIAN_CHANNEL_DOMAIN_ID, TIAN_CHANNEL_TAG, "消息解析失败: " + e);
+      }
+    });
   }
 
   // 注册事件监听
@@ -177,6 +196,7 @@ struct ClassLivePage {
     // 接收新消息
     this.messageCallback = (data: EventData) => {
       const message = data as MessageModel;
+      message.useTime()
       if (message && message.id) {
         // 检查消息是否已经存在（防止重复）
         const existingMessage = this.messages.find(m => m.id === message.id);

entry/src/main/ets/util/WebsocketMessage.ets

@@ -0,0 +1,81 @@
+import { webSocket } from "@kit.NetworkKit";
+import { BusinessError } from "@kit.BasicServicesKit";
+import { hilog } from "@kit.PerformanceAnalysisKit";
+
+const DOMAIN: number = 0
+const TAG: string = "websocket message"
+
+export default class WebSocketMessage {
+  private ws = webSocket.createWebSocket();
+  private url: string;
+  private room: string;
+  private onMessageCallback: (data: string | ArrayBuffer) => void = () => {
+  };
+
+  constructor(url: string, room: string) {
+    this.url = url;
+    this.room = room;
+  }
+
+  public connect(): void {
+    this.ws.on('open', (err: BusinessError, value: Object) => {
+      hilog.debug(DOMAIN, TAG, "on open, status: " + JSON.stringify(value));
+      this.ws.send("Hello, server!", (err: BusinessError, success: boolean) => {
+        if (!err) {
+          hilog.debug(DOMAIN, TAG, "Message sent successfully");
+        } else {
+          hilog.debug(DOMAIN, TAG, "Failed to send the message. Err: " + JSON.stringify(err));
+        }
+      });
+    });
+
+    this.ws.on('message', (err: BusinessError, value: string | ArrayBuffer) => {
+      hilog.debug(DOMAIN, TAG, "on message, message: " + value);
+      if (value === 'bye') {
+        this.close();
+      }
+      this.onMessageCallback(value);
+    });
+
+    this.ws.on('close', (err: BusinessError, value: webSocket.CloseResult) => {
+      hilog.debug(DOMAIN, TAG, "on close, code: " + value.code + ", reason: " + value.reason);
+    });
+
+    this.ws.on('error', (err: BusinessError) => {
+      hilog.debug(DOMAIN, TAG, "on error, error: " + JSON.stringify(err));
+    });
+
+    const wsUrl = `ws://${this.url}/ws/room?room=${this.room}`;
+    this.ws.connect(wsUrl, (err: BusinessError, connected: boolean) => {
+      if (!err) {
+        hilog.debug(DOMAIN, TAG, "Connected successfully");
+      } else {
+        hilog.debug(DOMAIN, TAG, "Connection failed. Err: " + JSON.stringify(err));
+      }
+    });
+  }
+
+  public setOnMessage(callback: (data: string | ArrayBuffer) => void): void {
+    this.onMessageCallback = callback;
+  }
+
+  public sendMessage(message: string): void {
+    this.ws.send(message, (err: BusinessError, success: boolean) => {
+      if (!err) {
+        hilog.debug(DOMAIN, TAG, "Message sent: " + message);
+      } else {
+        hilog.debug(DOMAIN, TAG, "Send failed: " + JSON.stringify(err));
+      }
+    });
+  }
+
+  public close(): void {
+    this.ws.close((err: BusinessError, success: boolean) => {
+      if (!err) {
+        hilog.debug(DOMAIN, TAG, "Connection closed successfully");
+      } else {
+        hilog.debug(DOMAIN, TAG, "Failed to close the connection. Err: " + JSON.stringify(err));
+      }
+    });
+  }
+}