微信小程序支付终于踩完坑了,发现里面坑挺大的,现在发个贴,希望以后入坑的同学可以看一下 :
签名加密的时候要转成utf-8,加密我用自己的接口进行加密的 digest.update(data.getBytes("utf-8"));
// 统一下单接口获取sign(签名) paysignjsapi: function (appid, attach, body, mch_id, nonce_str, notify_url, openid, out_trade_no, spbill_create_ip, total_fee, trade_type, key) { var self = this; //加密签名 wx.request({ url: 'http://localhost:8080/XinXingWXApi/wxXcxApi/Md5Encrypt.do', method: 'GET', data: { appid: appid, attach: attach, body: body, mch_id: mch_id, nonce_str: nonce_str, notify_url: notify_url, openid: openid, out_trade_no: out_trade_no, spbill_create_ip: spbill_create_ip, total_fee: total_fee, trade_type: trade_type, key: key }, //统一下单 success: function (res) { var sign = res.data.strMd5 var formData = "" formData += " "" + appid + " " //appid formData += "" + attach + " " //附加数据 formData += "" + body + "" //标题 formData += "" + mch_id + " " //商户号 formData += "" + nonce_str + " " //随机字符串,不长于32位。 formData += "" + notify_url + " " //异步接收微信支付结果通知的回调地址 formData += "" + openid + " " //用户Id formData += "" + out_trade_no + " " //商户订单号 formData += "" + spbill_create_ip + " " formData += "" + total_fee + " " //金额 formData += "" + trade_type + " " //公共号支付 formData += "" + sign + " "//签名 formData += "
返回数据解析xml
//请求统一下单接口 wx.request({ url: "https://api.mch.weixin.qq.com/pay/unifiedorder", method: 'POST', data: formData, success: function (data) { wx.request({ url: "http://localhost:8080/XinXingWXApi/wxXcxApi/xmlAnalyze.do?strXml=" + data.data, method: 'POST', success: function (res) { var pk = 'prepay_id=' + res.data.prepayId; var timeStamp = self.createTimeStamp(); //获取支付签名,并支付 self.getsignType(appid, timeStamp, nonce_str, pk, "MD5", key); } }) } }) } }); }
第三就是调用支付了,这里也有几个小坑,第一就是appId很多写成appid就不行了,第二个就是preoatid 的参数格式要写对prepay_id=wx2017011711060194dccf725232155886323 第三个就是调用支付的时候报支付签名错误,也需要到签名接口查看签名是否一致,查看参数是否是对的,调用微信支付的时候必须加上appId
getsignType: function (appid, timeStamp, nonce_str, pk, signType, key) { var that = this; wx.request({ url: "http://localhost:8080/XinXingWXApi/wxXcxApi/getSignType.hn", method: 'GET', data: { appId: appid, timeStamp: timeStamp, nonceStr: nonce_str, pk: pk, signType: signType, key: key }, success: function (res) { console.log(res.data.paySign) var paySign = res.data.paySign //调用微信支付 wx.requestPayment({ 'appId': appid, 'timeStamp': timeStamp, 'nonceStr': nonce_str, 'package': pk, 'signType': 'MD5', 'paySign': paySign, 'success': function (res) { console.log(res); console.log('success'); }, 'fail': function (res) { console.log(res); console.log('fail'); }, 'complete': function (res) { // console.log(res); console.log('complete'); } }); } }) }
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