企业支付服务12.12促销活动

// 初始化微信支付参数
const wxPayParams = {
  appId: 'your_app_id',
  timeStamp: Math.floor(Date.now() / 1000).toString(),
  nonceStr: generateRandomString(16),
  package: 'prepay_id=your_prepay_id',
  signType: 'MD5',
  paySign: generatePaySign(wxPayParams)
};

// 生成随机字符串
function generateRandomString(length) {
  let result = '';
  const characters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
  for (let i = 0; i < length; i++) {
    result += characters.charAt(Math.floor(Math.random() * characters.length));
  }
  return result;
}

// 生成支付签名
function generatePaySign(params) {
  const sortedKeys = Object.keys(params).sort();
  let stringA = '';
  for (const key of sortedKeys) {
    stringA += `${key}=${params[key]}&`;
  }
  stringA += `key=your_api_key`;
  return md5(stringA).toUpperCase();
}

// 发起支付请求
wx.requestPayment({
  timeStamp: wxPayParams.timeStamp,
  nonceStr: wxPayParams.nonceStr,
  package: wxPayParams.package,
  signType: wxPayParams.signType,
  paySign: wxPayParams.paySign,
  success: function(res) {
    console.log('支付成功', res);
  },
  fail: function(res) {
    console.error('支付失败', res);
  }
});