微信小程序支付之c#后台实现方法实例详解

public class GetOpenid : IHttpHandler 
 { 
 public string openid { get; set; } 
 
 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以获取数据 
 string result = HttpService.Get(url); 
 
 Log.Debug(this.GetType().ToString(), "GetOpenidAndAccessTokenFromCode response : " + result); 
 
 //保存access_token，用于收货地址获取 
 JsonData jd = JsonMapper.ToObject(result); 
 //access_token = (string)jd["access_token"]; 
 
 //获取用户openid 
 openid = (string)jd["openid"]; 
 context.Response.Write(openid);//获取H5调起JS API参数 
 
 }

public class pay : IHttpHandler 
 { 
 
 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());//获取H5调起JS API参数 
 }

wxpay: function () { 
 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) 页面 
 success: function (res1) { 
 wx.showToast({ 
 title: '支付成功', 
 icon: 'success', 
 duration: 2000 
 }); 
 
 }, 
 fail: function () { 
 // fail 
 
 }, 
 complete: function () { 
 
 } 
 }) 
 }, 
 fail: function (res) { 
 // fail 
 }, 
 complete: function () { 
 // complete 
 } 
 }) 
 },