基于nodejs微信支付
Posted yxz1025
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通过nodejs使用微信支付最重要的就是微信的签名，在这里md5后的字符必须转化为大写
一、回复微信通知消息模版
message.ejs
<xml>
<return_code><![CDATA[<%-return_code%>]]></return_code>
<return_msg><![CDATA[<%=return_msg%>]]></return_msg>
</xml>
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;
//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)
);以上是关于基于nodejs微信支付的主要内容，如果未能解决你的问题，请参考以下文章
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