本文实例为大家分享了nodejs实现微信支付的具体代码，供大家参考，具体内容如下
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>
二、微信支付model文件代码
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;
三、在express router中调用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){
});
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。
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