小程序商城的优势_微信小程序 支付功用开发过错总结

微信小程序 支付功能开发错误总结     投稿:lqh   这篇文章主要介绍了微信小程序 支付功能开发错误总结的相关资料,需要的朋友可以参考下

微信小程序 支付功能开发错误总结

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 :

wiki/doc/api/ chapter=7_4 index=2

业务流程在这里大家看文档的时候可以看到。第一个坑,获取用户的openid,参数一定要拼在url连接上,否则会报{"errcode":40013,"errmsg":"invalid appid, hints: [ req_id: iil1ba0504ns86 ]"}错误

 onLoad: function () {
 var that = this
 wx.login({
 success: function (res) {
 if (res.code) {
 //发起网络请求
 wx.request({
 url: 'sns/jscode2session appid=wxaacfcfc7162fe3 secret=83ebd41c3e6f34a49b3a48ff3f71 js_code=' + res.code + ' grant_type=authorization_code',
 method: "POST",
 success: function (res) {
 that.setData({
 openid: res.data.openid
 } else {
 console.log('获取用户登录态失败!' + res.errMsg)

第二个坑,支付统一下单接口,签名这个坑是比较多人遇到问题的这个是MD5加密经常和签名工具里面的加密签名不一样

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: '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 = " xml "
 formData += " appid " + appid + " /appid " //appid 
 formData += " attach " + attach + " /attach " //附加数据 
 formData += " body " + body + " /body " //标题
 formData += " mch_id " + mch_id + " /mch_id " //商户号 
 formData += " nonce_str " + nonce_str + " /nonce_str " //随机字符串,不长于32位。 
 formData += " notify_url " + notify_url + " /notify_url " //异步接收微信支付结果通知的回调地址
 formData += " openid " + openid + " /openid " //用户Id
 formData += " out_trade_no " + out_trade_no + " /out_trade_no " //商户订单号
 formData += " spbill_create_ip " + spbill_create_ip + " /spbill_create_ip "
 formData += " total_fee " + total_fee + " /total_fee " //金额
 formData += " trade_type " + trade_type + " /trade_type " //公共号支付
 formData += " sign " + sign + " /sign "//签名
 formData += " /xml "

返回数据解析xml

 //请求统一下单接口
 wx.request({
 url: "pay/unifiedorder",
 method: 'POST',
 data: formData,
 success: function (data) {
 wx.request({
 url: "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 f323 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: "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');

感谢阅读,希望能帮助到大家,谢谢大家对本站的支持!


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