微信支付统一下单封装类
using System;
using System.Collections.Generic;
using System.Configuration;
using System.Drawing;
using System.Drawing.Imaging;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Net;
using System.Net.Security;
using System.Security.Cryptography;
using System.Security.Cryptography.X509Certificates;
using System.Text;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Xml;
using LitJson;
using ThoughtWorks.QRCode.Codec;
using ThoughtWorks.QRCode.Codec.Data;
namespace weixin.Utility
{
public class JsApiPay
{
public static readonly string WX_APPID = ConfigurationManager.AppSettings["WX_APPID"].ToString();
public static readonly string WX_MCHID = ConfigurationManager.AppSettings["WX_MCHID"].ToString();
public static readonly string WX_KEY = ConfigurationManager.AppSettings["WX_KEY"].ToString();
public static readonly string WX_APPSECRET = ConfigurationManager.AppSettings["WX_APPSECRET"].ToString();
public static readonly string WX_NOTIFY_URL = ConfigurationManager.AppSettings["WX_NOTIFY_URL"].ToString();
public static readonly string APPWX_APPID = ConfigurationManager.AppSettings["APPWX_APPID"].ToString();
public static readonly string APPWX_MCHID = ConfigurationManager.AppSettings["APPWX_MCHID"].ToString();
public static readonly string APPWX_KEY = ConfigurationManager.AppSettings["APPWX_KEY"].ToString();
///
/// 保存页面对象，因为要在类的方法中使用Page的Request对象
///
private Page page { get; set; }
///
/// openid用于调用统一下单接口
///
public string openid { get; set; }
///
/// access_token用于获取收货地址js函数入口参数
///
public string access_token { get; set; }
///
/// 商品金额，用于统一下单
///
public int total_fee { get; set; }
///
/// 统一下单接口返回结果
///
public WxPayData unifiedOrderResult { get; set; }
//public JsApiPay(Page page)
//{
// this.page = page;
//}
/**
* 调用统一下单，获得下单结果
* @return 统一下单结果
* @失败时抛异常WxPayException
*/
public WxPayData GetUnifiedOrderResult(string body, string out_trade_no, string total_fee, string trade_type, string openid, string ip, string countdown, string type)
{
double time = double.Parse(countdown);//交易时间
//统一下单
WxPayData data = new WxPayData();
data.SetValue("body", body);//商品描述 是
//data.SetValue("attach", "test");//附加数据 否
data.SetValue("out_trade_no", out_trade_no);//商户订单号 是
data.SetValue("total_fee", total_fee);//标价金额 是
data.SetValue("time_start", DateTime.Now.ToString("yyyyMMddHHmmss"));//交易起始时间 否
data.SetValue("time_expire", DateTime.Now.AddMinutes(time).ToString("yyyyMMddHHmmss"));//交易结束时间 否
//data.SetValue("goods_tag", "test");//商品标记 否
if (trade_type == "JSAPI")
{
data.SetValue("trade_type", "JSAPI");//交易类型 是
data.SetValue("openid", openid);//用户标识 否 (交易类型是JSAPI时必须传)
}
else if (trade_type == "NATIVE")
{
data.SetValue("trade_type", "NATIVE");//交易类型 是
data.SetValue("product_id", out_trade_no);
//data.SetValue("product_id", "123456");
}
else if (trade_type == "APP") {
data.SetValue("trade_type", "APP");//交易类型 是
}
WxPayData result = UnifiedOrder(data, ip, type);
if (!result.IsSet("appid") || !result.IsSet("prepay_id") || result.GetValue("prepay_id").ToString() == "")
{
//Log.Error(this.GetType().ToString(), "UnifiedOrder response error!");
throw new WxPayException("UnifiedOrder response error!");
}
unifiedOrderResult = result;
return result;
}
///
/// 生成直接支付url
///
///
/// 从统一下单成功返回的数据中获取调起APP付所需的参数，
///
/// m_values = new SortedDictionary();
/**
* 设置某个字段的值
* @param key 字段名
* @param value 字段值
*/
public void SetValue(string key, object value)
{
m_values[key] = value;
}
/**
* 根据字段名获取某个字段的值
* @param key 字段名
* @return key对应的字段值
*/
public object GetValue(string key)
{
object o = null;
m_values.TryGetValue(key, out o);
return o;
}
/**
* 判断某个字段是否已设置
* @param key 字段名
* @return 若字段key已被设置，则返回true，否则返回false
*/
public bool IsSet(string key)
{
object o = null;
m_values.TryGetValue(key, out o);
if (null != o)
return true;
else
return false;
}
/**
* @将Dictionary转成xml
* @return 经转换得到的xml串
* @throws WxPayException
**/
public string ToXml()
{
//数据为空时不能转化为xml格式
if (0 == m_values.Count)
{
//Log.Error(this.GetType().ToString(), "WxPayData数据为空!");
throw new WxPayException("WxPayData数据为空!");
}
string xml = "";
foreach (KeyValuePair pair in m_values)
{
//字段值不能为null，会影响后续流程
if (pair.Value == null)
{
//Log.Error(this.GetType().ToString(), "WxPayData内部含有值为null的字段!");
throw new WxPayException("WxPayData内部含有值为null的字段!");
}
if (pair.Value.GetType() == typeof(int))
{
xml += "<" + pair.Key + ">" + pair.Value + "";
}
else if (pair.Value.GetType() == typeof(string))
{
xml += "<" + pair.Key + ">" + "";
}
else//除了string和int类型不能含有其他数据类型
{
//Log.Error(this.GetType().ToString(), "WxPayData字段数据类型错误!");
throw new WxPayException("WxPayData字段数据类型错误!");
}
}
xml += " ";
return xml;
}
/**
* @将xml转为WxPayData对象并返回对象内部的数据
* @param string 待转换的xml串
* @return 经转换得到的Dictionary
* @throws WxPayException
*/
public SortedDictionary FromXml(string xml)
{
if (string.IsNullOrEmpty(xml))
{
//Log.Error(this.GetType().ToString(), "将空的xml串转换为WxPayData不合法!");
throw new WxPayException("将空的xml串转换为WxPayData不合法!");
}
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.LoadXml(xml);
XmlNode xmlNode = xmlDoc.FirstChild;//获取到根节点
XmlNodeList nodes = xmlNode.ChildNodes;
foreach (XmlNode xn in nodes)
{
XmlElement xe = (XmlElement)xn;
m_values[xe.Name] = xe.InnerText;//获取xml的键值对到WxPayData内部的数据中
}
try
{
//2015-06-29 错误是没有签名
if (m_values["return_code"] != "SUCCESS")
{
return m_values;
}
CheckSign();//验证签名,不通过会抛异常
}
catch (WxPayException ex)
{
throw new WxPayException(ex.Message);
}
return m_values;
}
/**
* @Dictionary格式转化成url参数格式
* @ return url格式串, 该串不包含sign字段值
*/
public string ToUrl()
{
string buff = "";
foreach (KeyValuePair pair in m_values)
{
if (pair.Value == null)
{
//Log.Error(this.GetType().ToString(), "WxPayData内部含有值为null的字段!");
throw new WxPayException("WxPayData内部含有值为null的字段!");
}
if (pair.Key != "sign" && pair.Value.ToString() != "")
{
buff += pair.Key + "=" + pair.Value + "&";
}
}
buff = buff.Trim('&');
return buff;
}
/**
* @Dictionary格式化成Json
* @return json串数据
*/
public string ToJson()
{
string jsonStr = JsonMapper.ToJson(m_values);
return jsonStr;
}
/**
* @values格式化成能在Web页面上显示的结果（因为web页面上不能直接输出xml格式的字符串）
*/
public string ToPrintStr()
{
string str = "";
foreach (KeyValuePair pair in m_values)
{
if (pair.Value == null)
{
//Log.Error(this.GetType().ToString(), "WxPayData内部含有值为null的字段!");
throw new WxPayException("WxPayData内部含有值为null的字段!");
}
str += string.Format("{0}={1}
", pair.Key, pair.Value.ToString());
}
//Log.Debug(this.GetType().ToString(), "Print in Web Page : " + str);
return str;
}
/**
* @生成签名，详见签名生成算法
* @return 签名, sign字段不参加签名
*/
public string MakeSign()
{
//转url格式
string str = ToUrl();
//在string后加入API KEY
str += "&key=" + WX_KEY;
//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("x2"));
}
//所有字符转为大写
return sb.ToString().ToUpper();
}
/**
*
* 检测签名是否正确
* 正确返回true，错误抛异常
*/
public bool CheckSign()
{
//如果没有设置签名，则跳过检测
if (!IsSet("sign"))
{
//Log.Error(this.GetType().ToString(), "WxPayData签名存在但不合法!");
throw new WxPayException("WxPayData签名存在但不合法!");
}
//如果设置了签名但是签名为空，则抛异常
else if (GetValue("sign") == null || GetValue("sign").ToString() == "")
{
//Log.Error(this.GetType().ToString(), "WxPayData签名存在但不合法!");
throw new WxPayException("WxPayData签名存在但不合法!");
}
//获取接收到的签名
string return_sign = GetValue("sign").ToString();
//在本地计算新的签名
string cal_sign = MakeSign();
if (cal_sign == return_sign)
{
return true;
}
//Log.Error(this.GetType().ToString(), "WxPayData签名验证错误!");
throw new WxPayException("WxPayData签名验证错误!");
}
/**
* @获取Dictionary
*/
public SortedDictionary GetValues()
{
return m_values;
}
}
public class WxPayException : Exception
{
public WxPayException(string msg)
: base(msg)
{
}
}
///
/// http连接基础类，负责底层的http通信
///
public class HttpService
{
public static bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors)
{
//直接确认，否则打不开
return true;
}
public static string Post(string xml, string url, bool isUseCert, int timeout)
{
System.GC.Collect();//垃圾回收，回收没有正常关闭的http连接
string result = "";//返回结果
HttpWebRequest request = null;
HttpWebResponse response = null;
Stream reqStream = null;
try
{
//设置最大连接数
ServicePointManager.DefaultConnectionLimit = 200;
//设置https验证方式
if (url.StartsWith("https", StringComparison.OrdinalIgnoreCase))
{
ServicePointManager.ServerCertificateValidationCallback =
new RemoteCertificateValidationCallback(CheckValidationResult);
}
/***************************************************************
* 下面设置HttpWebRequest的相关属性
* ************************************************************/
request = (HttpWebRequest)WebRequest.Create(url);
request.Method = "POST";
request.Timeout = timeout * 1000;
//设置代理服务器
//WebProxy proxy = new WebProxy(); //定义一个网关对象
//proxy.Address = new Uri(WxPayConfig.PROXY_URL); //网关服务器端口:端口
//request.Proxy = proxy;
//设置POST的数据类型和长度
request.ContentType = "text/xml";
byte[] data = System.Text.Encoding.UTF8.GetBytes(xml);
request.ContentLength = data.Length;
//是否使用证书
//if (isUseCert)
//{
// string path = HttpContext.Current.Request.PhysicalApplicationPath;
// X509Certificate2 cert = new X509Certificate2(path + WxPayConfig.SSLCERT_PATH, WxPayConfig.SSLCERT_PASSWORD);
// request.ClientCertificates.Add(cert);
// //Log.Debug("WxPayApi", "PostXml used cert");
//}
//往服务器写入数据
reqStream = request.GetRequestStream();
reqStream.Write(data, 0, data.Length);
reqStream.Close();
//获取服务端返回
response = (HttpWebResponse)request.GetResponse();
//获取服务端返回数据
StreamReader sr = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
result = sr.ReadToEnd().Trim();
sr.Close();
}
catch (System.Threading.ThreadAbortException e)
{
//Log.Error("HttpService", "Thread - caught ThreadAbortException - resetting.");
//Log.Error("Exception message: {0}", e.Message);
System.Threading.Thread.ResetAbort();
}
catch (WebException e)
{
//Log.Error("HttpService", e.ToString());
//if (e.Status == WebExceptionStatus.ProtocolError)
//{
// Log.Error("HttpService", "StatusCode : " + ((HttpWebResponse)e.Response).StatusCode);
// Log.Error("HttpService", "StatusDescription : " + ((HttpWebResponse)e.Response).StatusDescription);
//}
throw new WxPayException(e.ToString());
}
catch (Exception e)
{
// Log.Error("HttpService", e.ToString());
throw new WxPayException(e.ToString());
}
finally
{
//关闭连接和流
if (response != null)
{
response.Close();
}
if (request != null)
{
request.Abort();
}
}
return result;
}
///
/// 处理http GET请求，返回数据
///
/// 请求的url地址
/// http GET成功后返回的数据，失败抛WebException异常
public static string Get(string url)
{
System.GC.Collect();
string result = "";
HttpWebRequest request = null;
HttpWebResponse response = null;
//请求url以获取数据
try
{
//设置最大连接数
ServicePointManager.DefaultConnectionLimit = 200;
//设置https验证方式
if (url.StartsWith("https", StringComparison.OrdinalIgnoreCase))
{
ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult);
}
/***************************************************************
* 下面设置HttpWebRequest的相关属性
* ************************************************************/
request = (HttpWebRequest)WebRequest.Create(url);
request.Method = "GET";
//设置代理
//WebProxy proxy = new WebProxy();
//proxy.Address = new Uri(WxPayConfig.PROXY_URL);
//request.Proxy = proxy;
//获取服务器返回
response = (HttpWebResponse)request.GetResponse();
//获取HTTP返回数据
StreamReader sr = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
result = sr.ReadToEnd().Trim();
sr.Close();
}
catch (System.Threading.ThreadAbortException e)
{
//Log.Error("HttpService", "Thread - caught ThreadAbortException - resetting.");
//Log.Error("Exception message: {0}", e.Message);
System.Threading.Thread.ResetAbort();
}
catch (WebException e)
{
//Log.Error("HttpService", e.ToString());
//if (e.Status == WebExceptionStatus.ProtocolError)
//{
// Log.Error("HttpService", "StatusCode : " + ((HttpWebResponse)e.Response).StatusCode);
// Log.Error("HttpService", "StatusDescription : " + ((HttpWebResponse)e.Response).StatusDescription);
//}
throw new WxPayException(e.ToString());
}
catch (Exception e)
{
//Log.Error("HttpService", e.ToString());
throw new WxPayException(e.ToString());
}
finally
{
//关闭连接和流
if (response != null)
{
response.Close();
}
if (request != null)
{
request.Abort();
}
}
return result;
}
}
} 调用支付：
string body = " ";
string out_trade_no =“”;
string total_fee =“0.01”//单位分
string trade_type = "";
string type;//为了后面区分商户号
if (transactionType == "1")//JSAPI
{
//JSAPI支付预处理
trade_type = "JSAPI";
WxPayData unifiedOrderResult = jsApiPay.GetUnifiedOrderResult(body, out_trade_no, total_fee, trade_type, openID, ip, countdown, type = "1");
payInfo = jsApiPay.GetJsApiParameters();//获取H5调起JS API参数
}
else if (transactionType == "2")
{//NATIVE
trade_type = "NATIVE";
WxPayData unifiedOrderResult = jsApiPay.GetUnifiedOrderResult(body, out_trade_no, total_fee, trade_type, openID, ip, countdown, type = "1");
payInfo = jsApiPay.GetPayUrl();//获取NATIVE 参数
}
else if (transactionType == "3")
{ //APP
trade_type = "APP";
WxPayData unifiedOrderResult = jsApiPay.GetUnifiedOrderResult(body, out_trade_no, total_fee, trade_type, openID, ip, countdown, type = "2");
payInfo = jsApiPay.GetAppApiParameters();//获取app API参数
}