HarmonyOS 鸿蒙Next中微信支付验证签名失败

HarmonyOS 鸿蒙Next中微信支付验证签名失败 请教下我一直微信支付验证签名失败，有遇到过吗？我是用的调试证书，微信登录没有问题，但是支付一直验证失败，支付的签名我是在APP签名的。

我尝试换了好几个md5加密的方法，但是生成的加密字符串都是一样，感觉跟md5加密应该没有什么区别。md5同步异步都方法都试过

不知道是哪里有问题，安卓是可以支付的。

public async pay(params: WXPayParams): Promise<boolean | null> {
  if (!this.wxApi?.isWXAppInstalled()) {
    return Promise.resolve(null)
  }
  
  return new Promise((resolve) => {
    this.payResolver = resolve
    const req = new wxopensdk.PayReq();
    req.partnerId = params.partnerid
    req.appId = params.appid
    req.packageValue = params.package
    req.prepayId = params.prepayid
    req.nonceStr = params.noncestr
    req.timeStamp = params.timestamp
    let parameters: Map<string, string> = new Map();
    parameters.set("appid", req.appId);
    parameters.set("noncestr", req.nonceStr);
    parameters.set("package", req.packageValue);
    parameters.set("partnerid", req.partnerId);
    parameters.set("prepayid", req.prepayId);
    parameters.set("timestamp", req.timeStamp);
    let pStr = this.createSignFromMaps(parameters)
    let test1111 =  CryptoJS.MD5(pStr).toString().toUpperCase()
    req.sign = test1111
    this.handler.registerOnRespCallback(this._onResp.bind(this))
    this.wxApi?.sendReq(getContext(this) as common.UIAbilityContext, req)
  })
}

static async createSignFromMap(parameters: Map<string, string>): Promise<string> {
  const keys = Array.from(parameters.keys())
    .filter(k => k !== 'sign' && k !== 'key' && parameters.get(k) !== null && parameters.get(k) !== '')
    .sort();
  // 2. 拼接参数
  let sb = '';
  for (const k of keys) {
    sb += `${k}=${parameters.get(k)}&`;
  }
  // 3. 拼接商户秘钥
  sb += `key=${app_key}`;
  sb = sb.trim().replace(/\u200B/g,''); // 去零宽空格
  // 4. 打印调试
 let sign =await HashUtil.md5(sb)
  return sign.toUpperCase();
}

  createSignFromMaps(parameters: Map<string, string>): string{
  const keys = Array.from(parameters.keys())
    .filter(k => k !== 'sign' && k !== 'key' && parameters.get(k) !== null && parameters.get(k) !== '')
    .sort();
  // 2. 拼接参数
  let sb = '';
  for (const k of keys) {
    sb += `${k}=${parameters.get(k)}&`;
  }
  // 3. 拼接商户秘钥
  sb += `key=${app_key}`;
 sb = sb.trim().replace(/\u200B/g,''); // 去零宽空格
  // 4. 打印调试
 return sb
}