How to implement WeChat payment in nodejs
This time I will show you how to implement WeChat payment in nodejs. What are the precautions for nodejs to implement WeChat payment. Here are practical cases, let’s take a look.
The most important thing when using WeChat payment through nodejs is the WeChat signature. The characters after md5 here must be converted to uppercase
1. Reply to WeChat notification message template
message.ejs
<xml> <return_code><![CDATA[<%-return_code%>]]></return_code> <return_msg><![CDATA[<%=return_msg%>]]></return_msg> </xml>
2. WeChat payment model file code
wxpay.js
var config = require('../config'); ／／配置文件 appid 等信息
var Q = require("q");
var request = require("request");
var crypto = require('crypto');
var ejs = require('ejs');
var fs = require('fs');
var key = "此处为申请微信支付的API密码";
var messageTpl = fs.readFileSync(dirname + '/message.ejs', 'utf-8');
var WxPay = {
getXMLNodeValue: function(node_name, xml) {
var tmp = xml.split("<" + node_name + ">");
var _tmp = tmp[1].split("</" + node_name + ">");
return _tmp[0];
},
raw: function(args) {
var keys = Object.keys(args);
keys = keys.sort()
var newArgs = {};
keys.forEach(function(key) {
newArgs[key] = args[key];
});
var string = '';
for (var k in newArgs) {
string += '&' + k + '=' + newArgs[k];
}
string = string.substr(1);
return string;
},
paysignjs: function(appid, nonceStr, package, signType, timeStamp) {
var ret = {
appId: appid,
nonceStr: nonceStr,
package: package,
signType: signType,
timeStamp: timeStamp
};
var string = this.raw(ret);
string = string + '&key=' + key;
var sign = crypto.createHash('md5').update(string, 'utf8').digest('hex');
return sign.toUpperCase();
},
paysignjsapi: function(appid, attach, body, mch_id, nonce_str, notify_url, openid, out_trade_no, spbill_create_ip, total_fee, trade_type) {
var ret = {
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
};
var string = this.raw(ret);
string = string + '&key=' + key; //key为在微信商户平台(pay.weixin.qq.com)-->账户设置-->API安全-->密钥设置
var crypto = require('crypto');
var sign = crypto.createHash('md5').update(string, 'utf8').digest('hex');
return sign.toUpperCase();
},
// 随机字符串产生函数
createNonceStr: function() {
return Math.random().toString(36).substr(2, 15);
},
// 时间戳产生函数
createTimeStamp: function() {
return parseInt(new Date().getTime() / 1000) + '';
},// 此处的attach不能为空值 否则微信提示签名错误
order: function(attach, body, mch_id, openid, bookingNo, total_fee, notify_url) {
var deferred = Q.defer();
var appid = config.member_config.appid;
var nonce_str = this.createNonceStr();
var timeStamp = this.createTimeStamp();
var url = "https://api.mch.weixin.qq.com/pay/unifiedorder";
var formData = "<xml>";
formData += "<appid>" + appid + "</appid>"; //appid
formData += "<attach>" + attach + "</attach>"; //附加数据
formData += "<body>" + body + "</body>";
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>";
formData += "<openid>" + openid + "</openid>";
formData += "<out_trade_no>" + bookingNo + "</out_trade_no>";
formData += "<spbill_create_ip>61.50.221.43</spbill_create_ip>";
formData += "<total_fee>" + total_fee + "</total_fee>";
formData += "<trade_type>JSAPI</trade_type>";
formData += "<sign>" + this.paysignjsapi(appid, attach, body, mch_id, nonce_str, notify_url, openid, bookingNo, '61.50.221.43', total_fee, 'JSAPI') + "</sign>";
formData += "</xml>";
var self = this;
request({
url: url,
method: 'POST',
body: formData
}, function(err, response, body) {
if (!err && response.statusCode == 200) {
console.log(body);
var prepay_id = self.getXMLNodeValue('prepay_id', body.toString("utf-8"));
var tmp = prepay_id.split('[');
var tmp1 = tmp[2].split(']');
//签名
var _paySignjs = self.paysignjs(appid, nonce_str, 'prepay_id=' + tmp1[0], 'MD5', timeStamp);
var args = {
appId: appid,
timeStamp: timeStamp,
nonceStr: nonce_str,
signType: "MD5",
package: tmp1[0],
paySign: _paySignjs
};
deferred.resolve(args);
} else {
console.log(body);
}
});
return deferred.promise;
},
//支付回调通知
notify: function(obj) {
var output = "";
if (obj.return_code == "SUCCESS") {
var reply = {
return_code: "SUCCESS",
return_msg: "OK"
};
} else {
var reply = {
return_code: "FAIL",
return_msg: "FAIL"
};
}
output = ejs.render(messageTpl, reply);
return output;
},
};
module.exports = WxPay;3. Call wxpay in express router
//微信支付demo
router.get('/order', function(req, res, next){
var attach = "1276687601";
var body = "测试支付";
var mch_id = "1111111"; ／／商户ID
var openid = "111111";
var bookingNo = "201501806125346"; ／／订单号
var total_fee = 10;
var notify_url = "http://localhost/wxpay/notify"; //通知地址
wxpay.order(attach, body, mch_id, openid, bookingNo, total_fee, notify_url).then(function(data){
res.render('wxpay', {args: data});
});
});//微信回调通知 采用数据流形式读取微信返回的xml数据 此处不在累赘
router.post('/notify', function(req, res, next){
});I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the PHP Chinese website!
Recommended reading:
JS operates TXT text to insert content at the specified position
JS makes a mobile touch carousel Effect
The above is the detailed content of How to implement WeChat payment in nodejs. For more information, please follow other related articles on the PHP Chinese website!
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
1387
52
Is nodejs a backend framework?
Apr 21, 2024 am 05:09 AM
Node.js can be used as a backend framework as it offers features such as high performance, scalability, cross-platform support, rich ecosystem, and ease of development.
How to connect nodejs to mysql database
Apr 21, 2024 am 06:13 AM
To connect to a MySQL database, you need to follow these steps: Install the mysql2 driver. Use mysql2.createConnection() to create a connection object that contains the host address, port, username, password, and database name. Use connection.query() to perform queries. Finally use connection.end() to end the connection.
What is the difference between npm and npm.cmd files in the nodejs installation directory?
Apr 21, 2024 am 05:18 AM
There are two npm-related files in the Node.js installation directory: npm and npm.cmd. The differences are as follows: different extensions: npm is an executable file, and npm.cmd is a command window shortcut. Windows users: npm.cmd can be used from the command prompt, npm can only be run from the command line. Compatibility: npm.cmd is specific to Windows systems, npm is available cross-platform. Usage recommendations: Windows users use npm.cmd, other operating systems use npm.
What are the global variables in nodejs
Apr 21, 2024 am 04:54 AM
The following global variables exist in Node.js: Global object: global Core module: process, console, require Runtime environment variables: __dirname, __filename, __line, __column Constants: undefined, null, NaN, Infinity, -Infinity
Is there a big difference between nodejs and java?
Apr 21, 2024 am 06:12 AM
The main differences between Node.js and Java are design and features: Event-driven vs. thread-driven: Node.js is event-driven and Java is thread-driven. Single-threaded vs. multi-threaded: Node.js uses a single-threaded event loop, and Java uses a multi-threaded architecture. Runtime environment: Node.js runs on the V8 JavaScript engine, while Java runs on the JVM. Syntax: Node.js uses JavaScript syntax, while Java uses Java syntax. Purpose: Node.js is suitable for I/O-intensive tasks, while Java is suitable for large enterprise applications.
Is nodejs a back-end development language?
Apr 21, 2024 am 05:09 AM
Yes, Node.js is a backend development language. It is used for back-end development, including handling server-side business logic, managing database connections, and providing APIs.
How to deploy nodejs project to server
Apr 21, 2024 am 04:40 AM
Server deployment steps for a Node.js project: Prepare the deployment environment: obtain server access, install Node.js, set up a Git repository. Build the application: Use npm run build to generate deployable code and dependencies. Upload code to the server: via Git or File Transfer Protocol. Install dependencies: SSH into the server and use npm install to install application dependencies. Start the application: Use a command such as node index.js to start the application, or use a process manager such as pm2. Configure a reverse proxy (optional): Use a reverse proxy such as Nginx or Apache to route traffic to your application
Which one to choose between nodejs and java?
Apr 21, 2024 am 04:40 AM
Node.js and Java each have their pros and cons in web development, and the choice depends on project requirements. Node.js excels in real-time applications, rapid development, and microservices architecture, while Java excels in enterprise-grade support, performance, and security.
