Micro-credit procedures for micro-credit payment steps ang

Micro-credit procedures for micro-credit payment steps ang _javascript Tips

Last Update:2017-01-18 Source: Internet

Author: User

Tags md5 md5 encryption

Developer on Alibaba Coud: Build your first app with APIs, SDKs, and tutorials on the Alibaba Cloud. Read more ＞

Recently, the development of micro-credit program into the payment phase, has been engaged in app development, so the payment process is to memorize the heart. But the micro-credit program to pay a little bit strange, the application of the creation of the public number, but the introduction of the document in the public number can not find a direct entrance, very puzzled, and the small program of the teacher in the end is the public number payment category or app Payment category also become a question. The following is the entry for the small program payment document (nested in the Applet API):

Https://pay.weixin.qq.com/wiki/doc/api/wxa/wxa_api.php?chapter=7_3&index=1

Small program Payment steps:

1, Advance payment

2, according to the pre-payment data + signature--> initiated payment

3, Payment callback

Here's a brief description of these 3 steps:

1, Advance payment. the interface submits the required information (order number, price, etc.) to the developer server through the front-end, and the developer server submits the micro-letter, then returns some information that the real front end needs to pay; Eg:

Pre-payment interface for developer server:

https://() htm?total_fee=100&cid=6001&ordercodes=2016120119
{"
sign": "A2****************a6", "
timestamp": "14****************68", "
Package": "Sign=wxpay",
"Partnerid": "14****************02", "
AppID": "Wx****************ab", "
noncestr": "9f****************37",
"Prepayid": "wx************* "
}

2, to initiate payment (note that initiating payment is not required to upload AppID,

But the signature paysign need to be appid and put in the first one.

Wx.requestpayment ({ 
nonceStr:res.data.nonceStr, 
package: "Prepay_id=" +res.data.prepayid, 
signtype: ' MD5 ', 
timeStamp:res.data.timestamp, 
paysign:sign,//<strong><span style= "color: #ff0000;" > Five fields to participate in signatures (case-sensitive): Appid,noncestr,package,signtype,timestamp (note that the order of the 5 parameter signatures is sorted according to the ASCII dictionary order) </span> </strong> 
success:function (res) { 
Console.log ("pay success"); 
}, 
fail:function () { 
}, 
Complete:function () { 
} 
})

Generate Signature Sign

https://pay.weixin.qq.com/wiki/doc/api/wxa/wxa_api.php?chapter=7_3&index=1&t=20161122

Micro-Letter Applet MD5 encryption tool download address: Https://code.csdn.net/snippets/2019875/master/download

var md5util = require ('.. /.. /.. /utils/md5.js ');
var sign = '; 
<strong><span style= "color: #ff0000;" > order is sorted by ASCII dictionary order </span></strong> 
var signa = "appid=" +app.appid+ "&noncestr=" + res.data.noncestr+ "&package=prepay_id=" +res.data.prepayid+ "&signtype=md5&timestamp=" + Res.data.timestamp; 
var signb = signa+ "&key=" +app.key; 
Sign = MD5UTIL.MD5 (SIGNB). toUpperCase ();

Build signature above is my code, not very clear, listed below the official document detailed description:

Suppose the parameters of the transfer are as follows:

APPID:WXD930EA5D5A258F4F (Note that AppID is not uploading in wx.requestpayment ({}), but it needs to be signed)
mch_id:10000100
Device_ info:1000
body:test
Nonce_str:ibuaivckdprxkhja

The first step is to follow the parameters in Key=value format and sort by the ASCII dictionary of parameter names as follows:

Stringa= "appid=wxd930ea5d5a258f4f&body=test&device_info=1000&mch_id=10000100&nonce_str= Ibuaivckdprxkhja ";

Step two: Stitching API key:

stringsigntemp= "stringa&key=192006250b4c09247ec02edce69f6a2d"
sign=md5 (stringsigntemp). ToUpperCase () = " 9a0a8659f005d6984697e2ca0a9cf3b7 "

At this point the sign is used for wx.requestpayment upload parameter paysign.

Finally get the final data sent:

<xml> 
<appid>wxd930ea5d5a258f4f</appid> 
<mch_id>10000100</mch_id> 
<device_info>1000<device_info> 
<body>test</body> 
<nonce_str> ibuaivckdprxkhja</nonce_str> 
<sign>9A0A8659F005D6984697E2CA0A9CF3B7</sign> 
<xml >

The above is a small set to introduce the micro-credit procedures for micro-letter payment steps, I hope to help you, if you have any questions please give me a message, small series will promptly reply to everyone. Here also thank you very much for the cloud Habitat Community website support!

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

Get Started for Free

Sales Support

1 on 1 presale consultation

Chat Contact Sales
After-Sales Support

24/7 Technical Support 6 Free Tickets per Quarter Faster Response

Open a Ticket
Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.

Learn More