HarmonyOS鸿蒙Next中从app中如何操作能启动微信小程序？

刚好我们这个版本吧这个需求叠加上去：

微信这边需要认证你的鸿蒙应用，具体操作参考这边文档：接入指南 / 鸿蒙接入指南

1. 鸿蒙这边我处理了一个类出来你改改能直接用

export class WxSdkHelper {
  static instance: WxSdkHelper = new WxSdkHelper()
  static isStartNet: boolean = true
  private static readonly WX_BUNDLE_NAME = 'com.tencent.wechat'
  private START_NET_WX_ID: string = 'wxebdb85b307bb170f'
  private Cheng_TU_Wx_Id: string = 'wx7491e38d4317beea' //国内主体绑定微信ID

  private constructor() { //单例使用

  }

  /**
   * 打开指定微信小程序
   * @param appId 平台拉起方 appId
   * @param userName 小程序原始 ID
   * @param type 小程序类型（默认正式版）
   */
  async openWxMiniProgram(userName: string | undefined,
    type: MINI_PROGRAM_TYPE = MINI_PROGRAM_TYPE.RELEASE): Promise<void> {
    if (!userName) {
      LogUtil.e(TAG, 'openWxMiniProgram', '拉起微信小程序失败，小程序ID为空，拉起拦截：', userName)
      return
    }
    const appId: string = this.getProjectId()
    const isInstalled = this.checkWxInstalled(appId)
    if (!isInstalled) {
      LogUtil.w(TAG, '微信未安装，已尝试跳转下载页')
      return
    }

    try {
      const context = this.getContext()
      const wxApi = wxopensdk.WXAPIFactory.createWXAPI(appId)
      const request = new wxopensdk.LaunchMiniProgramReq()

      request.userName = userName
      request.miniprogramType = type

      const success = await wxApi.sendReq(context, request)

      if (success) {
        LogUtil.d(TAG, '拉起微信小程序成功', success)
      } else {
        LogUtil.e(TAG, '拉起微信小程序失败', success)
      }
    } catch (err) {
      LogUtil.e(TAG, '拉起微信小程序时发生异常', err)
    }
  }

  /**
   * @dec 根据不同的环境获取拉起的ID情况
   * @param
   * @returns
   * @date 2025/6/23
   */
  getProjectId(): string {
    WxSdkHelper.isStartNet = BuildConfigInfoHandel.configInfo?.isStartNet ?? true
    return WxSdkHelper.isStartNet ? this.START_NET_WX_ID : this.Cheng_TU_Wx_Id
  }

  /**
   * 检查微信是否安装
   * 未安装则尝试引导用户前往商店安装
   */
  private checkWxInstalled(appId: string): boolean {
    const wxApi = wxopensdk.WXAPIFactory.createWXAPI(appId)
    const installed = wxApi.isWXAppInstalled()

    if (!installed) {
      this.openAppInStore(WxSdkHelper.WX_BUNDLE_NAME)
    }

    return installed
  }

  /**
   * 跳转应用市场，打开指定包名详情页
   */
  private openAppInStore(bundleName: string): void {
    const want: Want = {
      action: 'ohos.want.action.appdetail',
      uri: `store://appgallery.huawei.com/app/detail?id=${bundleName}`,
    }

    const context = this.getContext()

    context.startAbility(want)
      .then(() => {
        LogUtil.d(TAG, '已拉起应用商店')
      })
      .catch((err: BusinessError) => {
        LogUtil.e(TAG, `拉起应用商店失败: Code=${err.code}, message=${err.message}`, err)
      })
  }

  /**
   * 获取上下文，封装容错
   */
  private getContext(): common.UIAbilityContext {
    return AppUtil.getContext() ?? (getContext() as common.UIAbilityContext)
  }
}

enum MINI_PROGRAM_TYPE {
  RELEASE = 0, //正式版
  DEVELOPMENT = 1, //开发版
  TRIAL = 2 //体验版
}

1. 坑点在src/main/module.json5下面把这个配置好，不然你没反应