微信小程序 使用微信支付功能实现在线支付订单

subRecharge: function (e) { //充值下单
    var that = this
    var amount = Number(that.data.onPrice); //金额 [单位：分]
    if (amount==‘‘){
      that.errorShow(‘请选择充值金额‘);
      return;
    }
    var appid = getApp().globalData.appid; //appid
    var timestamp = Date.parse(new Date());//获取当前时间戳 
    timestamp = timestamp / 1000;
    var version = getApp().globalData.version; //版本号
    var sign = getApp().globalData.sign; //签名

    var userIdEnc = wx.getStorageSync(‘userIdEnc‘); //获取本地缓存中的userIdEnc //用户唯一识别码
    var loginDevice = wx.getStorageSync(‘loginDevice‘);//获取本地缓存中的loginDevice
    
    var data = { "appId": appid, "timestamp": timestamp, "version": version, "userIdEnc": userIdEnc, "amount": amount };
    var url = getApp().globalData.url; //接口路径
    var key = getApp().globalData.appkey;  //加密k值 
    var encryption = utils.encryption(key, data) //算出签名
    sign = encryption;//赋值给签名
    data.sign = sign;
    data = JSON.stringify(data);
    // console.log(‘算出签名的data结果：‘, data)
    var header = {
      ‘content-type‘: ‘application/json‘,
      ‘cookie‘: "devimark=" + loginDevice + ";" + "usenc=" + userIdEnc,
    };
    wx.request({ //请求用充值下单接口
      method: "post",
      url: url + ‘/order/recharge/createAmountOrder‘,
      data: data + ‘@#@‘ + appid,
      header: header,
      dataType: "json",
      success: function (res) {
        // console.log("充值成功", res) 
        if (res.data.code == ‘0000‘) { //下单成功
          that.setData({
            systemOrderNo: res.data.data.systemOrderNo //返回充值订单编号 
          });
          that.cashPay(); //调用支付方法
       
        } else if (res.data.code == ‘2014‘){  //2014 用户没有登录
          wx.navigateTo({
            url: ‘../../pages/logs/logs‘,
          })
        }else{
          wx.navigateTo({
            url: ‘../../pages/rechargeFailure/rechargeFailure‘,//充值失败页
          })
        }

      }, fail: function (res) {
        console.log("充值失败", res)
        wx.navigateTo({
          url: ‘../../pages/rechargeFailure/rechargeFailure‘,//充值失败页
        })
      }
    })

  }

cashPay: function(){ // 现金充值
    var that = this
    // var amount = Number(that.data.onPrice); //金额
    var systemOrderNo = that.data.systemOrderNo;//充值订单号
    var cashPayWayId = getApp().globalData.cashPayWayId; //现金支付方式ID
    var appid = getApp().globalData.appid; //appid
    var timestamp = Date.parse(new Date());//获取当前时间戳 
    timestamp = timestamp / 1000;
    var version = getApp().globalData.version; //版本号
    var sign = getApp().globalData.sign; //签名
    var userIdEnc = wx.getStorageSync(‘userIdEnc‘); //获取本地缓存中的userIdEnc //用户唯一识别码
    var loginDevice = wx.getStorageSync(‘loginDevice‘);//获取本地缓存中的loginDevice
    var data = { "appId": appid, "timestamp": timestamp, "version": version, "systemOrderNo": systemOrderNo, "cashPayWayId": cashPayWayId };
    var url = getApp().globalData.url; //接口路径
    var key = getApp().globalData.appkey;  //加密k值 
    var encryption = utils.encryption(key, data) //算出签名
    sign = encryption;//赋值给签名
    data.sign = sign;
    data = JSON.stringify(data);
    // console.log(‘算出签名的data结果：‘, data)
    var header = {
      ‘content-type‘: ‘application/json‘,
      ‘cookie‘: "devimark=" + loginDevice + ";" + "usenc=" + userIdEnc,
    };
    wx.request({ //请求用现金支付接口
      method: "post",
      url: url + ‘/pay/cash/cashPay‘,
      data: data + ‘@#@‘ + appid,
      header: header,
      dataType: "json",
      success: function (res) {
        // console.log("现金支付成功", res)
        if (res.data.code == ‘0000‘) { //现金支付成功
          var sdkContent = ‘prepay_id=‘+res.data.data.sdkContent;
         
          var wxappid = getApp().globalData.wxappid; //appid
          var timestamp = Date.parse(new Date());//获取当前时间戳 
          timestamp = timestamp / 1000;
          timestamp = timestamp.toString();
          var nonceStr = utils.getNum(); //随机串
          var signType = ‘MD5‘;
          var paykey = getApp().globalData.paykey;
         
          var paySign = { "appId": wxappid, "nonceStr": nonceStr, "package": sdkContent, "signType": signType, "timeStamp": timestamp,}
          var objKeySort = utils.objKeySort(paySign); //排序
          paySign = utils.splicingString(objKeySort); //按微信支付验签规则拼接字符串
          paySign = paySign + "&key=" + paykey;  //尾部添加key值 【商户密钥】
          console.log("sort_ASCII", objKeySort);
          console.log("paySign", paySign);
          var md5 = require(‘../../utils/js/md5.js‘);  //md5加密
          var md5Pw = md5.hexMD5(paySign);
          paySign = md5Pw.toUpperCase(); //按微信支付验签规则将签名字母转大写
          console.log(paySign);
          console.log(timestamp, nonceStr, sdkContent, paySign);
          wx.requestPayment(
            {
              ‘timeStamp‘: timestamp,
              ‘nonceStr‘: nonceStr,
              ‘package‘: sdkContent,
              ‘signType‘: ‘MD5‘,
              ‘paySign‘: paySign,
              ‘success‘: function (res) { 
                // console.log(1);
                 wx.navigateTo({
                    url: ‘../../pages/rechargeSuccess/rechargeSuccess‘,//充值成功页
                  })
              },
              ‘fail‘: function (res) {
                wx.navigateTo({
                  url: ‘../../pages/rechargeFailure/rechargeFailure‘,//充值失败页
                })
               },
              ‘complete‘: function (res) {
                wx.navigateTo({
                  url: ‘../../pages/rechargeFailure/rechargeFailure‘,//充值失败页
                })
              }
            })


          // console.log("0000", res.data.data.systemOrderNo)
         
        } else if (res.data.code == ‘2014‘) {  //2014 用户没有登录
          wx.navigateTo({
            url: ‘../../pages/logs/logs‘,
          })
        } else {
          wx.navigateTo({
            url: ‘../../pages/rechargeFailure/rechargeFailure‘,//充值失败页
          })
        }

      }, fail: function (res) {
        console.log("充值失败", res)
        wx.navigateTo({
          url: ‘../../pages/rechargeFailure/rechargeFailure‘,//充值失败页
        })
      }
    })
  },

//key值顺序排序的函数
function objKeySort(obj) {//排序的函数
  var newkey = Object.keys(obj).sort();
  //先用Object内置类的keys方法获取要排序对象的属性名，再利用Array原型上的sort方法对获取的属性名进行排序，newkey是一个数组
  var newObj = {};//创建一个新的对象，用于存放排好序的键值对
  for (var i = 0; i < newkey.length; i++) {//遍历newkey数组
    newObj[newkey[i]] = obj[newkey[i]];//向新创建的对象中按照排好的顺序依次增加键值对
  }
  return newObj;//返回排好序的新对象
}




function splicingString(obj){ //封装全局拼接微信支付验签字符串
  var str = ‘‘;
  var arr = Object.keys(obj);
  var j = arr.length;
  var k = 0;
  for (var i in obj) {
    k++;
    // console.log("aa.length::", j, k)
    if (j == k) {
      str += i + "=" + obj[i]
    } else {
      str += i + "=" + obj[i] + "&"
    }
    // console.log(i,‘--‘,aa[i]);
  }
  return str;
  // console.log(str)
}

function getNum() { //随机生成32位随机数
  var chars = [‘0‘, ‘1‘, ‘2‘, ‘3‘, ‘4‘, ‘5‘, ‘6‘, ‘7‘, ‘8‘, ‘9‘, ‘A‘, ‘B‘, ‘C‘, ‘D‘, ‘E‘, ‘F‘, ‘G‘, ‘H‘, ‘I‘, ‘J‘, ‘K‘, ‘L‘, ‘M‘, ‘N‘, ‘O‘, ‘P‘, ‘Q‘, ‘R‘, ‘S‘, ‘T‘, ‘U‘, ‘V‘, ‘W‘, ‘X‘, ‘Y‘, ‘Z‘, ‘a‘, ‘b‘, ‘c‘, ‘d‘, ‘e‘, ‘f‘, ‘g‘, ‘h‘, ‘i‘, ‘j‘, ‘k‘, ‘l‘, ‘m‘, ‘n‘, ‘o‘, ‘p‘, ‘q‘, ‘r‘, ‘s‘, ‘t‘, ‘u‘, ‘v‘, ‘w‘, ‘x‘, ‘y‘, ‘z‘]; 
  var nums = "";
  for (var i = 0; i < 32; i++) {
    var id = parseInt(Math.random() * 61); 
    nums += chars[id]; 
  } 
  return nums; 
}

module.exports = {
  formatTime: formatTime,
  // Bytes2Str: Bytes2Str,
  // Str2Bytes: Str2Bytes,
  encryption: encryption,
  getNum: getNum,
  objKeySort: objKeySort,
  sort_ASCII: sort_ASCII,
  splicingString: splicingString
}