1. 开发环境准备

1. ​​安装DevEco Studio 3.1+​​：

   • 从华为开发者官网下载最新版DevEco Studio
   • 安装HarmonyOS 5.0 SDK

2. ​​项目配置​​：

   // module.json5
   {
     "module": {
       "requestPermissions": [
         {
           "name": "ohos.permission.INTERNET"
         },
         {
           "name": "ohos.permission.READ_MEDIA"
         },
         {
           "name": "ohos.permission.NOTIFICATION"
         }
       ],
       "abilities": [
         {
           "name": "EntryAbility",
           "type": "page",
           "backgroundModes": ["dataTransfer"]
         }
       ]
     }
   }

2. 企业微信核心功能实现

2.1 登录认证模块

// src/main/ets/model/WeComAuth.ts
import http from '@ohos.net.http';
import { Preferences } from '@ohos.data.preferences';

export class WeComAuth {
  private static readonly CORP_ID = 'your_corp_id';
  private static readonly AGENT_ID = 'your_agent_id';
  private static readonly REDIRECT_URI = 'entry://com.your.app/auth';
  
  static async login(): Promise<boolean> {
    const httpRequest = http.createHttp();
    try {
      const response = await httpRequest.request(
        `https://open.work.weixin.qq.com/wwopen/sso/qrConnect?appid=${this.CORP_ID}&agentid=${this.AGENT_ID}&redirect_uri=${encodeURIComponent(this.REDIRECT_URI)}`,
        { method: 'GET' }
      );
      
      if (response.responseCode === 302) {
        const authCode = this.extractAuthCode(response.header['Location']);
        return this.exchangeToken(authCode);
      }
      return false;
    } catch (err) {
      console.error(`Login failed: ${err.code}, ${err.message}`);
      return false;
    }
  }
  
  private static async exchangeToken(authCode: string): Promise<boolean> {
    // 实现token交换逻辑
  }
}

2.2 消息列表页面

// src/main/ets/pages/MessageList.ets
import { WeComMessage } from '../model/WeComMessage';

@Entry
@Component
struct MessageList {
  @State messages: Array<WeComMessage> = [];
  private timer: number = 0;
  
  aboutToAppear() {
    this.loadMessages();
    this.timer = setInterval(() => this.loadMessages(), 60000); // 每分钟刷新
  }
  
  aboutToDisappear() {
    clearInterval(this.timer);
  }
  
  async loadMessages() {
    try {
      this.messages = await WeComMessage.getRecentMessages();
    } catch (err) {
      console.error(`Load messages failed: ${err}`);
    }
  }
  
  build() {
    List({ space: 10 }) {
      ForEach(this.messages, (msg: WeComMessage) => {
        ListItem() {
          MessageItem({ message: msg })
        }
      }, (msg) => msg.id.toString())
    }
    .onScrollIndex((start: number) => {
      if (start > this.messages.length - 5) {
        this.loadMoreMessages();
      }
    })
  }
}

2.3 单聊/群聊页面

// src/main/ets/pages/ChatPage.ets
import { WeComChat } from '../model/WeComChat';

@Entry
@Component
struct ChatPage {
  @State messages: Array<WeComMessage> = [];
  @State inputText: string = '';
  private chatId: string;
  
  build() {
    Column() {
      // 消息列表
      List({ space: 5 }) {
        ForEach(this.messages, (msg) => {
          ListItem() {
            if (msg.isSelf) {
              RightMessage({ message: msg })
            } else {
              LeftMessage({ message: msg })
            }
          }
        })
      }
      .layoutWeight(1)
      
      // 输入区域
      Row() {
        TextInput({ text: this.inputText })
          .onChange((value: string) => {
            this.inputText = value;
          })
          .layoutWeight(1)
        
        Button('发送')
          .onClick(() => {
            if (this.inputText.trim()) {
              this.sendMessage();
            }
          })
      }
      .height(60)
      .padding(10)
    }
  }
  
  async sendMessage() {
    try {
      await WeComChat.sendTextMessage(this.chatId, this.inputText);
      this.inputText = '';
      this.loadMessages();
    } catch (err) {
      console.error(`Send message failed: ${err}`);
    }
  }
}

3. 企业微信API封装

// src/main/ets/api/WeComApi.ts
import http from '@ohos.net.http';
import { WeComToken } from '../model/WeComToken';

export class WeComApi {
  private static readonly BASE_URL = 'https://qyapi.weixin.qq.com/cgi-bin';
  
  static async get<T>(endpoint: string, params?: Record<string, string>): Promise<T> {
    const token = await WeComToken.getAccessToken();
    const httpRequest = http.createHttp();
    
    let url = `${this.BASE_URL}${endpoint}?access_token=${token}`;
    if (params) {
      url += '&' + Object.entries(params).map(([k, v]) => `${k}=${encodeURIComponent(v)}`).join('&');
    }
    
    try {
      const response = await httpRequest.request(url, { method: 'GET' });
      const result = JSON.parse(response.result as string);
      
      if (result.errcode !== 0) {
        throw new Error(`WeCom API Error: ${result.errmsg}`);
      }
      
      return result as T;
    } catch (err) {
      console.error(`API request failed: ${err}`);
      throw err;
    }
  }
  
  static async post<T>(endpoint: string, data: object): Promise<T> {
    // 类似GET方法的实现，使用POST请求
  }
}

4. 通知功能实现

// src/main/ets/utils/NotificationUtil.ts
import notification from '@ohos.notification';

export class NotificationUtil {
  static showMessageNotification(sender: string, content: string) {
    try {
      notification.publish({
        id: 1,
        contentType: notification.ContentType.NOTIFICATION_CONTENT_BASIC_TEXT,
        content: {
          title: `新消息: ${sender}`,
          text: content,
          additionalText: '来自企业微信'
        }
      });
    } catch (err) {
      console.error(`Show notification failed: ${err}`);
    }
  }
  
  static cancelAll() {
    notification.cancelAll();
  }
}

5. 数据持久化

// src/main/ets/data/WeComStorage.ts
import { Preferences } from '@ohos.data.preferences';

export class WeComStorage {
  private static readonly PREFERENCES_NAME = 'wecom_storage';
  private static preferences: Preferences | null = null;
  
  static async getInstance(): Promise<Preferences> {
    if (!this.preferences) {
      this.preferences = await Preferences.getPreferences(globalThis.abilityContext, this.PREFERENCES_NAME);
    }
    return this.preferences;
  }
  
  static async saveUserInfo(userInfo: object): Promise<void> {
    const prefs = await this.getInstance();
    await prefs.put('user_info', JSON.stringify(userInfo));
    await prefs.flush();
  }
  
  static async getUserInfo(): Promise<object | null> {
    const prefs = await this.getInstance();
    const userInfoStr = await prefs.get('user_info', '');
    return userInfoStr ? JSON.parse(userInfoStr) : null;
  }
}

6. 企业微信UI组件库

6.1 消息气泡组件

// src/main/ets/components/MessageBubble.ets
@Component
export struct MessageBubble {
  private message: WeComMessage;
  
  build() {
    Column() {
      Text(this.message.sender)
        .fontSize(14)
        .fontColor('#888888')
      
      Text(this.message.content)
        .padding(10)
        .backgroundColor(this.message.isSelf ? '#95EC69' : '#FFFFFF')
        .borderRadius(8)
        .margin({ top: 5 })
      
      Text(this.message.time)
        .fontSize(12)
        .fontColor('#AAAAAA')
        .align(Alignment.End)
        .margin({ top: 5 })
    }
    .width('80%')
    .alignItems(this.message.isSelf ? HorizontalAlign.End : HorizontalAlign.Start)
  }
}

6.2 通讯录联系人组件

// src/main/ets/components/ContactItem.ets
@Component
export struct ContactItem {
  private contact: WeComContact;
  
  build() {
    Row() {
      Image(this.contact.avatar)
        .width(50)
        .height(50)
        .borderRadius(25)
        .margin({ right: 10 })
      
      Column() {
        Text(this.contact.name)
          .fontSize(18)
        
        Text(this.contact.department)
          .fontSize(14)
          .fontColor('#888888')
      }
      .layoutWeight(1)
      
      Image($r('app.media.ic_arrow_right'))
        .width(20)
        .height(20)
    }
    .padding(10)
    .width('100%')
  }
}

7. 企业微信主界面架构

// src/main/ets/MainPage.ets
@Entry
@Component
struct MainPage {
  @State currentTab: number = 0;
  
  build() {
    Tabs({ barPosition: BarPosition.End }) {
      TabContent() {
        MessageList()
      }.tabBar('消息')
      
      TabContent() {
        ContactList()
      }.tabBar('通讯录')
      
      TabContent() {
        Workbench()
      }.tabBar('工作台')
      
      TabContent() {
        MePage()
      }.tabBar('我')
    }
    .barMode(BarMode.Fixed)
    .barWidth('100%')
    .barHeight(60)
  }
}

8. 企业微信功能扩展建议

1. ​​音视频通话​​：

   • 集成华为实时音视频服务(RTC)
   • 实现1对1通话和多人会议

2. ​​文件传输​​：

   • 使用华为云存储服务
   • 实现大文件分片上传下载

3. ​​日程管理​​：

   • 集成系统日历服务
   • 实现会议预约和提醒

4. ​​审批流程​​：

   • 自定义审批表单
   • 实现多级审批逻辑

5. ​​微应用集成​​：

   • 开发企业定制化微应用
   • 实现单点登录和权限控制

9. 测试与发布

1. ​​测试要点​​：

   • 多设备适配测试
   • 网络切换测试(4G/Wi-Fi)
   • 消息推送可靠性测试

2. ​​发布流程​​：

   • 申请企业微信开发者资质
   • 提交应用到华为应用市场
   • 配置企业微信应用管理后台