微信小程序支付c#后台实现
今天为大家带来比较简单的支付后台处理
首先下载官方的c#模板（WxPayAPI），将模板（WxPayAPI）添加到服务器上，然后在WxPayAPI项目目录中添加两个“一般处理程序” （改名为GetOpenid.ashx、pay.ashx）
之后打开business目录下的JsApiPay.cs，在JsApiPay.cs中修改如下两处
然后在GetOpenid.ashx中加入代码如下：
public void ProcessRequest(HttpContext context)
{
string code = HttpContext.Current.Request.QueryString["code"];
WxPayData data = new WxPayData();
data.SetValue("appid",WxPayConfig.APPID);
data.SetValue("secret",WxPayConfig.APPSECRET);
data.SetValue("code",code);
data.SetValue("grant_type","authorization_code");
string url = "https://api.weixin.qq.com/sns/oauth2/access_token?" + data.ToUrl();
//请求url以<a href="/tag/huoqu/" target="_blank" class="keywords">获取</a>数据
string result = HttpService.Get(url);
Log.Debug(this.GetType().ToString(),"GetOpenidAndAccessTokenFromCode response : " + result);
//保存access_token，用于收货地址<a href="/tag/huoqu/" target="_blank" class="keywords">获取</a>
JsonData jd = JsonMapper.ToObject(result);
//access_token = (string)jd["access_token"];
//<a href="/tag/huoqu/" target="_blank" class="keywords">获取</a><a href="/tag/yonghu/" target="_blank" class="keywords">用户</a>openid
openid = (string)jd["openid"];
context.Response.Write(openid);//<a href="/tag/huoqu/" target="_blank" class="keywords">获取</a>H5调起JS API参数
}</pre>
在pay.ashx中加入代码如下：
public void ProcessRequest(HttpContext context)
{
context.Response.ContentType = "text/plain";
string openid = HttpContext.Current.Request.QueryString["openid"];
string total_fee = HttpContext.Current.Request.QueryString["total_fee"];
JsApiPay jsApiPay = new JsApiPay(context);
jsApiPay.openid = openid;
jsApiPay.total_fee = int.Parse(total_fee);
WxPayData unifiedOrderResult = jsApiPay.GetUnifiedOrderResult();
context.Response.Write(jsApiPay.GetJsApiParameters());//<a href="/tag/huoqu/" target="_blank" class="keywords">获取</a>H5调起JS API参数
}</pre>
然后发布就可以了（记得将相关的信息appid等填好）
var that = this
//登陆获取code
wx.login({
success: function (res) {
console.log(res.code)
//获取openid
that.getOpenId(res.code)
}
});
},getOpenId: function (code) {
//获取openID
var that = this;
wx.request({
url: 'http://*******/WxPayAPI/GetOpenid.ashx?code='+ code,//改为自己的域名
data: {},// method: 'GET',success: function (res) {
var a12=res.data
that.generateOrder(a12)
//console.log(a12)
},fail: function () {
// fail
},complete: function () {
// complete
}
})
},/生成商户订单 */
generateOrder: function (openid) {
var that = this;
//console.log(openid)
//统一支付
wx.request({
url: 'http://*****/WxPayAPI/pay.ashx',//改为自己的域名
//method: 'GET',data: {
total_fee: 1,//1分
openid: openid,},header: {
'content-type': 'application/json'
},success: function (res) {
var pay = res.data
//发起支付
var timeStamp = pay.timeStamp;
var packages = pay.package;
var paySign = pay.paySign;
var nonceStr = pay.nonceStr;
var param = { "timeStamp": timeStamp,"package": packages,"paySign": paySign,"signType": "MD5","nonceStr": nonceStr };
that.pay(param) },})
},/ 支付 /
pay: function (param) {
wx.requestPayment({
timeStamp: param.timeStamp,nonceStr: param.nonceStr,package: param.package,signType: param.signType,paySign: param.paySign,success: function (res) {
// success
wx.navigateBack({
delta: 1,// 回退前 delta(默认为1) <a href="/tag/yemian/" target="_blank" class="keywords">页面</a>
success: function (res1) {
wx.showToast({
title: '支付成功',icon: 'success',duration: 2000
});
},fail: function () {
// fail
},complete: function () {
}
}) },fail: function (res) {
// fail
},
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