微信公众号支付一个页面就搞定

using Ecode.WeiXin.Tools;

using Ecode.WeiXin.Tools.WxPayAPI; using Newtonsoft.Json.Linq; using System;

using System.Collections.Generic; using System.Linq;

using System.Security.Cryptography; using System.Text; using System.Web;

using System.Web.Mvc; using System.Xml;

namespace Ecode.WeiXin.WebUI.Controllers {

public class PayWeiXinController : Controller {

//

// GET: /PayWeiXin/ ///

/// 日期转换成unix时间戳 ///

/// ///

private static long DateTimeToUnixTimestamp(DateTime dateTime) {

var start = new DateTime(1970, 1, 1, 0, 0, 0, dateTime.Kind); return Convert.ToInt64((dateTime - start).TotalSeconds); }

private string ToMD5(string str) {

//MD5加密

var md5 = MD5.Create();

var bs = md5.ComputeHash(Encoding.UTF8.GetBytes(str)); var sb = new StringBuilder(); foreach (byte b in bs) {

sb.Append(b.ToString(\)); }

//所有字符转为大写

return sb.ToString(); }

public ActionResult Index() {

//获取从其他页面传递过来的订单号和用户ID string orderNumber = Request[\]; string userID = Request[\];

if (String.IsNullOrEmpty(orderNumber) || String.IsNullOrEmpty(userID)) {

return View(); }

//组装state的内容，根据情况来

string state = orderNumber + \ + userID;

//获取code后的回跳页面 string rediretUrl =

HttpUtility.UrlEncode(\);

string urlGetCode =

\ + WxPayConfig.APPID + \ + rediretUrl +

\ + state + \;

return Redirect(urlGetCode); }

public ActionResult Pay() {

string code = Request.QueryString[\]; string state = Request.QueryString[\];

string orderNumber = state.Split('_')[0]; string userID = state.Split('_')[1];

//调用接口，根据订单号和用户编号获取订单信息，避免被篡改页面支付信息

LiuLiuKangBa.BLL.APISDK.Models.ModelSOrder orderInfo = SDKApi.GetOrderInfo(orderNumber, userID); ViewBag.OrderInfo = orderInfo; ViewBag.Oid = orderNumber; ViewBag.Uid = userID;

if (orderInfo == null || orderInfo.AMount == 0) {

//无效的订单

Log.Error(\无效订单\, \ + orderNumber + \ + userID);

return View(); }

else if (orderInfo.Status == 0) {

//可以支付

string body = orderInfo.Name;

string out_trade_no = orderNumber.Trim();

string total_fee = Convert.ToInt32(orderInfo.AMount * 100).ToString();

string url =

\ +

WxPayConfig.APPID + \ + WxPayConfig.APPSECRET + \ + code + \;

string result = Helper.GetResponseData(\, url, Helper.RequestMethod.GET);

Log.Debug(\获取code时的返回值\, result);

JObject jsonObj = JObject.Parse(result);

//拿到openid，微信公众号支付，统一下单时，需要openid string openid = jsonObj[\].ToString();

//组装统一下单需要的参数

Dictionary dataList = new Dictionary();

dataList.Add(\, WxPayConfig.APPID);

dataList.Add(\, WxPayConfig.MCHID); dataList.Add(\,

DateTime.Now.AddSeconds(Helper.GetRandomNumber(100, 5000)).Ticks.ToString());

dataList.Add(\, body);

dataList.Add(\, out_trade_no); dataList.Add(\, total_fee); dataList.Add(\, Request.UserHostAddress);

dataList.Add(\, WxPayConfig.NOTIFY_URL); dataList.Add(\, \); dataList.Add(\, openid);

//按关键字排序

var orderDataList = dataList.OrderBy(g => g.Key);

StringBuilder strBuilder = new StringBuilder();

foreach (var keyValue in orderDataList) {

strBuilder.Append(keyValue.Key); strBuilder.Append(\);

strBuilder.Append(keyValue.Value);

strBuilder.Append(\); }

//MD5加上key

strBuilder.Append(\ + WxPayConfig.KEY);

Log.Debug(\前\, strBuilder.ToString());

//得到加密的sign string sign =

ToMD5(strBuilder.ToString()).ToUpper();

//组装统一下单需要的xml

StringBuilder xmlBuiler = new StringBuilder(); xmlBuiler.Append(\);

foreach (var keyValue in orderDataList) {

xmlBuiler.Append(\ + keyValue.Key + \ + keyValue.Value + \ + keyValue.Key + \); }

xmlBuiler.Append(\ + sign + \); xmlBuiler.Append(\);

Log.Debug(\提交统一下单的XML\, xmlBuiler.ToString());

string urlUnifiedorder =

\; string resultUnifiedorder =

Helper.GetResponseData(xmlBuiler.ToString(), urlUnifiedorder, Helper.RequestMethod.POST);

Log.Debug(\统一下单返回的XML:\, resultUnifiedorder);

string prepay_id = \; try {

XmlDocument xmlDoc = new XmlDocument(); xmlDoc.LoadXml(resultUnifiedorder);

XmlNode node_return_cod = xmlDoc.SelectSingleNode(\); if

(node_return_cod.InnerText.Equals(\)) {

//通信成功

XmlNode node_result_code = xmlDoc.SelectSingleNode(\); if

(node_result_code.InnerText.Equals(\)) {

//交易成功

//获取到统一下单返回的prepay_id prepay_id =

xmlDoc.SelectSingleNode(\).InnerText; Log.Info(\提交微信支付成功\, \ + orderNumber + \ + userID); } else {

//交易失败

Log.Error(\提交微信支付失败\, \ + orderNumber + \ + userID);