303 lines
12 KiB
C#
303 lines
12 KiB
C#
using System.Web;
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using System.Text;
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using System.IO;
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using System.Net;
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using System;
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using System.Collections.Generic;
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using System.Xml;
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namespace Mtxfw.Utility
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{
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/// <summary>
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/// 类名：Submit
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/// 功能：支付宝各接口请求提交类
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/// 详细：构造支付宝各接口表单HTML文本，获取远程HTTP数据
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/// 版本：3.3
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/// 修改日期：2011-07-05
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/// 说明：
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/// 以下代码只是为了方便商户测试而提供的样例代码，商户可以根据自己网站的需要，按照技术文档编写,并非一定要使用该代码。
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/// 该代码仅供学习和研究支付宝接口使用，只是提供一个参考
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/// </summary>
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public class Submit
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{
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#region 字段
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//支付宝网关地址（新）
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private static string GATEWAY_NEW = "https://mapi.alipay.com/gateway.do?";
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//商户的私钥
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private static string _key = "";
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//编码格式
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private static string _input_charset = "";
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//签名方式
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private static string _sign_type = "";
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#endregion
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static Submit()
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{
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_key = AlipayConfig.Key.Trim();
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_input_charset = AlipayConfig.Input_charset.Trim().ToLower();
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_sign_type = AlipayConfig.Sign_type.Trim().ToUpper();
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}
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/// <summary>
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/// 生成请求时的签名
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/// </summary>
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/// <param name="sPara">请求给支付宝的参数数组</param>
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/// <returns>签名结果</returns>
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private static string BuildRequestMysign(Dictionary<string, string> sPara)
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{
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//把数组所有元素，按照“参数=参数值”的模式用“&”字符拼接成字符串
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string prestr = Core.CreateLinkString(sPara);
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//把最终的字符串签名，获得签名结果
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string mysign = "";
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switch (_sign_type)
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{
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case "MD5":
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mysign = AlipayMD5.Sign(prestr, _key, _input_charset);
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break;
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default:
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mysign = "";
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break;
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}
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return mysign;
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}
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/// <summary>
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/// 生成要请求给支付宝的参数数组
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/// </summary>
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/// <param name="sParaTemp">请求前的参数数组</param>
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/// <returns>要请求的参数数组</returns>
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private static Dictionary<string, string> BuildRequestPara(SortedDictionary<string, string> sParaTemp)
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{
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//待签名请求参数数组
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Dictionary<string, string> sPara = new Dictionary<string, string>();
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//签名结果
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string mysign = "";
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//过滤签名参数数组
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sPara = Core.FilterPara(sParaTemp);
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//获得签名结果
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mysign = BuildRequestMysign(sPara);
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//签名结果与签名方式加入请求提交参数组中
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sPara.Add("sign", mysign);
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sPara.Add("sign_type", _sign_type);
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return sPara;
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}
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/// <summary>
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/// 生成要请求给支付宝的参数数组
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/// </summary>
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/// <param name="sParaTemp">请求前的参数数组</param>
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/// <param name="code">字符编码</param>
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/// <returns>要请求的参数数组字符串</returns>
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private static string BuildRequestParaToString(SortedDictionary<string, string> sParaTemp, Encoding code)
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{
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//待签名请求参数数组
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Dictionary<string, string> sPara = new Dictionary<string, string>();
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sPara = BuildRequestPara(sParaTemp);
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//把参数组中所有元素，按照“参数=参数值”的模式用“&”字符拼接成字符串，并对参数值做urlencode
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string strRequestData = Core.CreateLinkStringUrlencode(sPara, code);
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return strRequestData;
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}
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/// <summary>
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/// 建立请求，以表单HTML形式构造（默认）
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/// </summary>
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/// <param name="sParaTemp">请求参数数组</param>
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/// <param name="strMethod">提交方式。两个值可选：post、get</param>
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/// <param name="strButtonValue">确认按钮显示文字</param>
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/// <returns>提交表单HTML文本</returns>
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public static string BuildRequest(SortedDictionary<string, string> sParaTemp, string strMethod, string strButtonValue)
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{
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//待请求参数数组
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Dictionary<string, string> dicPara = new Dictionary<string, string>();
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dicPara = BuildRequestPara(sParaTemp);
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StringBuilder sbHtml = new StringBuilder();
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sbHtml.Append("<form id='alipaysubmit' name='alipaysubmit' action='" + GATEWAY_NEW + "_input_charset=" + _input_charset + "' method='" + strMethod.ToLower().Trim() + "'>");
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foreach (KeyValuePair<string, string> temp in dicPara)
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{
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sbHtml.Append("<input type='hidden' name='" + temp.Key + "' value='" + temp.Value + "'/>");
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}
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//submit按钮控件请不要含有name属性
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sbHtml.Append("<input type='submit' value='" + strButtonValue + "' style='display:none;'></form>");
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sbHtml.Append("<script>document.forms['alipaysubmit'].submit();</script>");
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return sbHtml.ToString();
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}
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/// <summary>
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/// 建立请求，以模拟远程HTTP的POST请求方式构造并获取支付宝的处理结果
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/// </summary>
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/// <param name="sParaTemp">请求参数数组</param>
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/// <returns>支付宝处理结果</returns>
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public static string BuildRequest(SortedDictionary<string, string> sParaTemp)
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{
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Encoding code = Encoding.GetEncoding(_input_charset);
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//待请求参数数组字符串
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string strRequestData = BuildRequestParaToString(sParaTemp,code);
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//把数组转换成流中所需字节数组类型
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byte[] bytesRequestData = code.GetBytes(strRequestData);
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//构造请求地址
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string strUrl = GATEWAY_NEW + "_input_charset=" + _input_charset;
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//请求远程HTTP
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string strResult = "";
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try
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{
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//设置HttpWebRequest基本信息
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HttpWebRequest myReq = (HttpWebRequest)HttpWebRequest.Create(strUrl);
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myReq.Method = "post";
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myReq.ContentType = "application/x-www-form-urlencoded";
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//填充POST数据
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myReq.ContentLength = bytesRequestData.Length;
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Stream requestStream = myReq.GetRequestStream();
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requestStream.Write(bytesRequestData, 0, bytesRequestData.Length);
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requestStream.Close();
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//发送POST数据请求服务器
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HttpWebResponse HttpWResp = (HttpWebResponse)myReq.GetResponse();
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Stream myStream = HttpWResp.GetResponseStream();
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//获取服务器返回信息
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StreamReader reader = new StreamReader(myStream, code);
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StringBuilder responseData = new StringBuilder();
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String line;
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while ((line = reader.ReadLine()) != null)
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{
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responseData.Append(line);
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}
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//释放
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myStream.Close();
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strResult = responseData.ToString();
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}
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catch (Exception exp)
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{
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strResult = "报错："+exp.Message;
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}
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return strResult;
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}
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/// <summary>
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/// 建立请求，以模拟远程HTTP的POST请求方式构造并获取支付宝的处理结果，带文件上传功能
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/// </summary>
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/// <param name="sParaTemp">请求参数数组</param>
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/// <param name="strMethod">提交方式。两个值可选：post、get</param>
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/// <param name="fileName">文件绝对路径</param>
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/// <param name="data">文件数据</param>
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/// <param name="contentType">文件内容类型</param>
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/// <param name="lengthFile">文件长度</param>
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/// <returns>支付宝处理结果</returns>
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public static string BuildRequest(SortedDictionary<string, string> sParaTemp, string strMethod, string fileName, byte[] data, string contentType, int lengthFile)
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{
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//待请求参数数组
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Dictionary<string, string> dicPara = new Dictionary<string, string>();
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dicPara = BuildRequestPara(sParaTemp);
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//构造请求地址
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string strUrl = GATEWAY_NEW + "_input_charset=" + _input_charset;
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//设置HttpWebRequest基本信息
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HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(strUrl);
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//设置请求方式：get、post
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request.Method = strMethod;
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//设置boundaryValue
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string boundaryValue = DateTime.Now.Ticks.ToString("x");
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string boundary = "--" + boundaryValue;
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request.ContentType = "\r\nmultipart/form-data; boundary=" + boundaryValue;
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//设置KeepAlive
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request.KeepAlive = true;
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//设置请求数据，拼接成字符串
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StringBuilder sbHtml = new StringBuilder();
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foreach (KeyValuePair<string, string> key in dicPara)
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{
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sbHtml.Append(boundary + "\r\nContent-Disposition: form-data; name=\"" + key.Key + "\"\r\n\r\n" + key.Value + "\r\n");
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}
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sbHtml.Append(boundary + "\r\nContent-Disposition: form-data; name=\"withhold_file\"; filename=\"");
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sbHtml.Append(fileName);
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sbHtml.Append("\"\r\nContent-Type: " + contentType + "\r\n\r\n");
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string postHeader = sbHtml.ToString();
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//将请求数据字符串类型根据编码格式转换成字节流
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Encoding code = Encoding.GetEncoding(_input_charset);
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byte[] postHeaderBytes = code.GetBytes(postHeader);
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byte[] boundayBytes = Encoding.ASCII.GetBytes("\r\n" + boundary + "--\r\n");
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//设置长度
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long length = postHeaderBytes.Length + lengthFile + boundayBytes.Length;
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request.ContentLength = length;
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//请求远程HTTP
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Stream requestStream = request.GetRequestStream();
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Stream myStream;
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try
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{
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//发送数据请求服务器
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requestStream.Write(postHeaderBytes, 0, postHeaderBytes.Length);
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requestStream.Write(data, 0, lengthFile);
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requestStream.Write(boundayBytes, 0, boundayBytes.Length);
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HttpWebResponse HttpWResp = (HttpWebResponse)request.GetResponse();
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myStream = HttpWResp.GetResponseStream();
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}
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catch (WebException e)
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{
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return e.ToString();
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}
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finally
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{
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if (requestStream != null)
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{
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requestStream.Close();
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}
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}
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//读取支付宝返回处理结果
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StreamReader reader = new StreamReader(myStream, code);
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StringBuilder responseData = new StringBuilder();
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String line;
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while ((line = reader.ReadLine()) != null)
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{
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responseData.Append(line);
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}
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myStream.Close();
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return responseData.ToString();
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}
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/// <summary>
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/// 用于防钓鱼，调用接口query_timestamp来获取时间戳的处理函数
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/// 注意：远程解析XML出错，与IIS服务器配置有关
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/// </summary>
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/// <returns>时间戳字符串</returns>
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public static string Query_timestamp()
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{
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string url = GATEWAY_NEW + "service=query_timestamp&partner=" + AlipayConfig.Partner + "&_input_charset=" + AlipayConfig.Input_charset;
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string encrypt_key = "";
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XmlTextReader Reader = new XmlTextReader(url);
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XmlDocument xmlDoc = new XmlDocument();
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xmlDoc.Load(Reader);
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encrypt_key = xmlDoc.SelectSingleNode("/alipay/response/timestamp/encrypt_key").InnerText;
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return encrypt_key;
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}
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}
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} |