c 微信掃碼支付,完整版(包括回調)
1、我們需要用到的類,下載一個微信sdk。sdk中有相關的工具類鏈接地址爲:
https://pay.weixin.qq.com/wiki/doc/api/download/WxPayAPI_CS_v3.zip
2、如果覺得不想下載沒有關係,我貼代碼
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Net.Security;
using System.Security.Cryptography.X509Certificates;
using System.Text;
using System.Web;
namespace WxPayTest.WxHelper
{
public class HttpService
{
public static bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors)
{
//直接確認,否則打不開
return true;
}
public static string Post(string xml, string url, bool isUseCert, int timeout)
{
System.GC.Collect();//垃圾回收,回收沒有正常關閉的http連接
string result = "";//返回結果
HttpWebRequest request = null;
HttpWebResponse response = null;
Stream reqStream = null;
try
{
//設置最大連接數
ServicePointManager.DefaultConnectionLimit = 200;
//設置https驗證方式
if (url.StartsWith("https", StringComparison.OrdinalIgnoreCase))
{
ServicePointManager.ServerCertificateValidationCallback =
new RemoteCertificateValidationCallback(CheckValidationResult);
}
/***************************************************************
* 下面設置HttpWebRequest的相關屬性
* ************************************************************/
request = (HttpWebRequest)WebRequest.Create(url);
request.Method = "POST";
request.Timeout = timeout * 1000;
//設置代理服務器
WebProxy proxy = new WebProxy(); //定義一個網關對象
proxy.Address = new Uri(WxPayConfig.PROXY_URL); //網關服務器端口:端口
request.Proxy = proxy;
//設置POST的數據類型和長度
request.ContentType = "text/xml";
byte[] data = System.Text.Encoding.UTF8.GetBytes(xml);
request.ContentLength = data.Length;
//是否使用證書
if (isUseCert)
{
string path = HttpContext.Current.Request.PhysicalApplicationPath;
X509Certificate2 cert = new X509Certificate2(path + WxPayConfig.SSLCERT_PATH, WxPayConfig.SSLCERT_PASSWORD);
request.ClientCertificates.Add(cert);
}
//往服務器寫入數據
reqStream = request.GetRequestStream();
reqStream.Write(data, 0, data.Length);
reqStream.Close();
//獲取服務端返回
response = (HttpWebResponse)request.GetResponse();
//獲取服務端返回數據
StreamReader sr = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
result = sr.ReadToEnd().Trim();
sr.Close();
}
catch (System.Threading.ThreadAbortException e)
{
System.Threading.Thread.ResetAbort();
}
catch (WebException e)
{
if (e.Status == WebExceptionStatus.ProtocolError)
{
}
throw new WxPayException(e.ToString());
}
catch (Exception e)
{
throw new WxPayException(e.ToString());
}
finally
{
//關閉連接和流
if (response != null)
{
response.Close();
}
if (request != null)
{
request.Abort();
}
}
return result;
}
///
/// 請求Url,發送數據
///
public static string PostUrl(string url, string postData)
{
byte[] data = Encoding.UTF8.GetBytes(postData);
// 設置參數
HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;
CookieContainer cookieContainer = new CookieContainer();
request.CookieContainer = cookieContainer;
request.AllowAutoRedirect = true;
request.Method = "POST";
request.ContentType = "application/x-www-form-urlencoded";
request.ContentLength = data.Length;
Stream outstream = request.GetRequestStream();
outstream.Write(data, 0, data.Length);
outstream.Close();
//發送請求並獲取相應回應數據
HttpWebResponse response = request.GetResponse() as HttpWebResponse;
//直到request.GetResponse()程序纔開始向目標網頁發送Post請求
Stream instream = response.GetResponseStream();
StreamReader sr = new StreamReader(instream, Encoding.UTF8);
//返回結果網頁(html)代碼
string content = sr.ReadToEnd();
return content;
}
///
/// 處理http GET請求,返回數據
///
/// 請求的url地址
/// http GET成功後返回的數據,失敗拋WebException異常
public static string Get(string url)
{
System.GC.Collect();
string result = "";
HttpWebRequest request = null;
HttpWebResponse response = null;
//請求url以獲取數據
try
{
//設置最大連接數
ServicePointManager.DefaultConnectionLimit = 200;
//設置https驗證方式
if (url.StartsWith("https", StringComparison.OrdinalIgnoreCase))
{
ServicePointManager.ServerCertificateValidationCallback =
new RemoteCertificateValidationCallback(CheckValidationResult);
}
/***************************************************************
* 下面設置HttpWebRequest的相關屬性
* ************************************************************/
request = (HttpWebRequest)WebRequest.Create(url);
request.Method = "GET";
//設置代理
WebProxy proxy = new WebProxy();
proxy.Address = new Uri(WxPayConfig.PROXY_URL);
request.Proxy = proxy;
//獲取服務器返回
response = (HttpWebResponse)request.GetResponse();
//獲取HTTP返回數據
StreamReader sr = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
result = sr.ReadToEnd().Trim();
sr.Close();
}
catch (System.Threading.ThreadAbortException e)
{
System.Threading.Thread.ResetAbort();
}
catch (WebException e)
{
if (e.Status == WebExceptionStatus.ProtocolError)
{
}
throw new WxPayException(e.ToString());
}
catch (Exception e)
{
throw new WxPayException(e.ToString());
}
finally
{
//關閉連接和流
if (response != null)
{
response.Close();
}
if (request != null)
{
request.Abort();
}
}
return result;
}
}
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
namespace WxPayTest.WxHelper
{
public class NativePay
{
/**
* 生成直接支付url,支付url有效期爲2小時,模式二
* @param productId 商品ID
* @return 模式二URL
*/
public string GetPayUrl(string productId)
{
WxPayData data = new WxPayData();
data.SetValue("body", "test");//商品描述
data.SetValue("attach", "test");//附加數據
data.SetValue("out_trade_no", WxPayApi.GenerateOutTradeNo());//隨機字符串
data.SetValue("total_fee", 1);//總金額
data.SetValue("time_start", DateTime.Now.ToString("yyyyMMddHHmmss"));//交易起始時間
data.SetValue("time_expire", DateTime.Now.AddMinutes(10).ToString("yyyyMMddHHmmss"));//交易結束時間
data.SetValue("goods_tag", "jjj");//商品標記
data.SetValue("trade_type", "NATIVE");//交易類型
data.SetValue("product_id", productId);//商品ID
WxPayData result = WxPayApi.UnifiedOrder(data);//調用統一下單接口
string url = result.GetValue("code_url").ToString();//獲得統一下單接口返回的二維碼鏈接
return url;
}
/**
* 參數數組轉換爲url格式
* @param map 參數名與參數值的映射表
* @return URL字符串
*/
private string ToUrlParams(SortedDictionary map)
{
string buff = "";
foreach (KeyValuePair pair in map)
{
buff += pair.Key + "=" + pair.Value + "&";
}
buff = buff.Trim('&');
return buff;
}
}
}
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;
using System.Web;
namespace WxPayTest.WxHelper
{
public class WeiXinHelper
{
/**
* 生成直接支付url,支付url有效期爲2小時,模式二
* @param productId 商品ID
* @return 模式二URL
*/
public string GetPayUrl(string productId)
{
WxPayData data = new WxPayData();
data.SetValue("body", "test");//商品描述
data.SetValue("attach", "test");//附加數據
data.SetValue("out_trade_no", WxPayApi.GenerateOutTradeNo());//隨機字符串
data.SetValue("total_fee", 1);//總金額
data.SetValue("time_start", DateTime.Now.ToString("yyyyMMddHHmmss"));//交易起始時間
data.SetValue("time_expire", DateTime.Now.AddMinutes(10).ToString("yyyyMMddHHmmss"));//交易結束時間
data.SetValue("goods_tag", "jjj");//商品標記
data.SetValue("trade_type", "NATIVE");//交易類型
data.SetValue("product_id", productId);//商品ID
WxPayData result = WxPayApi.UnifiedOrder(data);//調用統一下單接口
string url = result.GetValue("code_url").ToString();//獲得統一下單接口返回的二維碼鏈接
return url;
}
/**
* 參數數組轉換爲url格式
* @param map 參數名與參數值的映射表
* @return URL字符串
*/
private string ToUrlParams(SortedDictionary map)
{
string buff = "";
foreach (KeyValuePair pair in map)
{
buff += pair.Key + "=" + pair.Value + "&";
}
buff = buff.Trim('&');
return buff;
}
}
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
namespace WxPayTest.WxHelper
{
public class WxPayApi
{
/**
*
* 統一下單
* @param WxPaydata inputObj 提交給統一下單API的參數
* @param int timeOut 超時時間
* @throws WxPayException
* @return 成功時返回,其他拋異常
*/
public static WxPayData UnifiedOrder(WxPayData inputObj, int timeOut = 600)
{
string url = "https://api.mch.weixin.qq.com/pay/unifiedorder";
//檢測必填參數
if (!inputObj.IsSet("out_trade_no"))
{
throw new WxPayException("缺少統一支付接口必填參數out_trade_no!");
}
else if (!inputObj.IsSet("body"))
{
throw new WxPayException("缺少統一支付接口必填參數body!");
}
else if (!inputObj.IsSet("total_fee"))
{
throw new WxPayException("缺少統一支付接口必填參數total_fee!");
}
else if (!inputObj.IsSet("trade_type"))
{
throw new WxPayException("缺少統一支付接口必填參數trade_type!");
}
//關聯參數
if (inputObj.GetValue("trade_type").ToString() == "JSAPI" && !inputObj.IsSet("openid"))
{
throw new WxPayException("統一支付接口中,缺少必填參數openid!trade_type爲JSAPI時,openid爲必填參數!");
}
if (inputObj.GetValue("trade_type").ToString() == "NATIVE" && !inputObj.IsSet("product_id"))
{
throw new WxPayException("統一支付接口中,缺少必填參數product_id!trade_type爲JSAPI時,product_id爲必填參數!");
}
//異步通知url未設置,則使用配置文件中的url
if (!inputObj.IsSet("notify_url"))
{
inputObj.SetValue("notify_url", WxPayConfig.NOTIFY_URL);//異步通知url
}
inputObj.SetValue("appid", WxPayConfig.APPID);//公衆賬號ID
inputObj.SetValue("mch_id", WxPayConfig.MCHID);//商戶號
inputObj.SetValue("spbill_create_ip", WxPayConfig.IP);//終端ip
inputObj.SetValue("nonce_str", GenerateNonceStr());//隨機字符串
//簽名
inputObj.SetValue("sign", inputObj.MakeSign());
string xml = inputObj.ToXml();
var start = DateTime.Now;
//string response = HttpService.Post(xml, url, false, timeOut);
string response = HttpService.PostUrl(url, xml);
var end = DateTime.Now;
int timeCost = (int)((end - start).TotalMilliseconds);
WxPayData result = new WxPayData();
result.FromXml(response);
ReportCostTime(url, timeCost, result);//測速上報
return result;
}
/**
*
* 測速上報
* @param string interface_url 接口URL
* @param int timeCost 接口耗時
* @param WxPayData inputObj參數數組
*/
private static void ReportCostTime(string interface_url, int timeCost, WxPayData inputObj)
{
//如果不需要進行上報
if (WxPayConfig.REPORT_LEVENL == 0)
{
return;
}
//如果僅失敗上報
if (WxPayConfig.REPORT_LEVENL == 1 && inputObj.IsSet("return_code") && inputObj.GetValue("return_code").ToString() == "SUCCESS" &&
inputObj.IsSet("result_code") && inputObj.GetValue("result_code").ToString() == "SUCCESS")
{
return;
}
//上報邏輯
WxPayData data = new WxPayData();
data.SetValue("interface_url", interface_url);
data.SetValue("execute_time_", timeCost);
//返回狀態碼
if (inputObj.IsSet("return_code"))
{
data.SetValue("return_code", inputObj.GetValue("return_code"));
}
//返回信息
if (inputObj.IsSet("return_msg"))
{
data.SetValue("return_msg", inputObj.GetValue("return_msg"));
}
//業務結果
if (inputObj.IsSet("result_code"))
{
data.SetValue("result_code", inputObj.GetValue("result_code"));
}
//錯誤代碼
if (inputObj.IsSet("err_code"))
{
data.SetValue("err_code", inputObj.GetValue("err_code"));
}
//錯誤代碼描述
if (inputObj.IsSet("err_code_des"))
{
data.SetValue("err_code_des", inputObj.GetValue("err_code_des"));
}
//商戶訂單號
if (inputObj.IsSet("out_trade_no"))
{
data.SetValue("out_trade_no", inputObj.GetValue("out_trade_no"));
}
//設備號
if (inputObj.IsSet("device_info"))
{
data.SetValue("device_info", inputObj.GetValue("device_info"));
}
try
{
Report(data);
}
catch (WxPayException ex)
{
//不做任何處理
}
}
/**
*
* 測速上報接口實現
* @param WxPayData inputObj 提交給測速上報接口的參數
* @param int timeOut 測速上報接口超時時間
* @throws WxPayException
* @return 成功時返回測速上報接口返回的結果,其他拋異常
*/
public static WxPayData Report(WxPayData inputObj, int timeOut = 1)
{
string url = "https://api.mch.weixin.qq.com/payitil/report";
//檢測必填參數
if (!inputObj.IsSet("interface_url"))
{
throw new WxPayException("接口URL,缺少必填參數interface_url!");
}
if (!inputObj.IsSet("return_code"))
{
throw new WxPayException("返回狀態碼,缺少必填參數return_code!");
}
if (!inputObj.IsSet("result_code"))
{
throw new WxPayException("業務結果,缺少必填參數result_code!");
}
if (!inputObj.IsSet("user_ip"))
{
throw new WxPayException("訪問接口IP,缺少必填參數user_ip!");
}
if (!inputObj.IsSet("execute_time_"))
{
throw new WxPayException("接口耗時,缺少必填參數execute_time_!");
}
inputObj.SetValue("appid", WxPayConfig.APPID);//公衆賬號ID
inputObj.SetValue("mch_id", WxPayConfig.MCHID);//商戶號
inputObj.SetValue("user_ip", WxPayConfig.IP);//終端ip
inputObj.SetValue("time", DateTime.Now.ToString("yyyyMMddHHmmss"));//商戶上報時間
inputObj.SetValue("nonce_str", GenerateNonceStr());//隨機字符串
inputObj.SetValue("sign", inputObj.MakeSign());//簽名
string xml = inputObj.ToXml();
string response = HttpService.Post(xml, url, false, timeOut);
WxPayData result = new WxPayData();
result.FromXml(response);
return result;
}
/**
* 根據當前系統時間加隨機序列來生成訂單號
* @return 訂單號
*/
public static string GenerateOutTradeNo()
{
var ran = new Random();
return string.Format("{0}{1}{2}", WxPayConfig.MCHID, DateTime.Now.ToString("yyyyMMddHHmmss"), ran.Next(999));
}
/**
* 生成時間戳,標準北京時間,時區爲東八區,自1970年1月1日 0點0分0秒以來的秒數
* @return 時間戳
*/
public static string GenerateTimeStamp()
{
TimeSpan ts = DateTime.UtcNow - new DateTime(1970, 1, 1, 0, 0, 0, 0);
return Convert.ToInt64(ts.TotalSeconds).ToString();
}
/**
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