上一节分享了微信小程序支付的后台，这一节来分享一下微信APP支付的后台。微信APP支付和微信小程序差别不大，微信APP支付后台不需要微信登录凭证、后台下单时交易类型（trade_type）不再是"JSAPI"，而是“APP”、商户后台传递给支付端的下单参数也有所不同。由于微信小程序支付和APP支付使用的APPID不同，索性直接写了两套支付，不再在代码里区分究竟该使用小程序支付的配置参数还是APP支付的参数。
官方是这样介绍的
具体实现：
在WePay文件夹下新建AppPay文件夹（微信支付的公共类在上一节），用于存放微信APP支付用到的类，新建AppPayConfig类
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Web.Configuration; namespace App.Pay.WePay.XcxPay
{
public class XcxPayConfig : WePayConfig
{
//=======【基本信息设置】=====================================
/* 微信公众号信息配置
* APPID：绑定支付的APPID（必须配置）
* MCHID：商户号（必须配置）
* KEY：商户支付密钥，参考开户邮件设置（必须配置）
* APPSECRET：公众帐号secert（仅JSAPI支付的时候需要配置）
*/
/// 小程序支付
public static string APPID = WebConfigurationManager.AppSettings["XcxAppID"].ToString();
public static string MCHID = WebConfigurationManager.AppSettings["XcxMchID"].ToString();
public static string KEY = WebConfigurationManager.AppSettings["XcxKey"].ToString();
public static string APPSECRET = WebConfigurationManager.AppSettings["XcxAppSecret"].ToString(); //=======【证书路径设置】=====================================
/* 证书路径,注意应该填写绝对路径（仅退款、撤销订单时需要）
*/
public const string SSLCERT_PATH = "cert/apiclient_cert.p12";
public const string SSLCERT_PASSWORD = ""; //=======【支付结果通知url】=====================================
/* 支付结果通知回调url，用于商户接收支付结果
*/
public static string NOTIFY_URL = WebConfigurationManager.AppSettings["XcxNotifyUrl"].ToString(); // log记录
public static string LogPath = WebConfigurationManager.AppSettings["XcxLog"].ToString();
}
}
新建AppPayHttpService类
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.Threading.Tasks;
using System.Web; namespace App.Pay.WePay.AppPay
{
public class AppPayHttpService
{
private static Log Log = new Log(AppPayConfig.LogPath); 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 = ;
//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 * ; //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 + AppPayConfig.SSLCERT_PATH, AppPayConfig.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, , 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 WePayException(e.ToString());
}
catch (Exception e)
{
Log.Error("HttpService", e.ToString());
throw new WePayException(e.ToString());
}
finally
{
//关闭连接和流
if (response != null)
{
response.Close();
}
if (request != null)
{
request.Abort();
}
}
return result;
} /// <summary>
/// 处理http GET请求，返回数据
/// </summary>
/// <param name="url">请求的url地址</param>
/// <returns>http GET成功后返回的数据，失败抛WebException异常</returns>
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 = ;
//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 WePayException(e.ToString());
}
catch (Exception e)
{
Log.Error("HttpService", e.ToString());
throw new WePayException(e.ToString());
}
finally
{
//关闭连接和流
if (response != null)
{
response.Close();
}
if (request != null)
{
request.Abort();
}
}
return result;
}
}
}
新建AppPayData类
using LitJson;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Security.Cryptography;
using System.Text;
using System.Threading.Tasks;
using System.Xml; namespace App.Pay.WePay.AppPay
{
/// <summary>
/// 微信支付协议接口数据类，所有的API接口通信都依赖这个数据结构，
/// 在调用接口之前先填充各个字段的值，然后进行接口通信，
/// 这样设计的好处是可扩展性强，用户可随意对协议进行更改而不用重新设计数据结构，
/// 还可以随意组合出不同的协议数据包，不用为每个协议设计一个数据包结构
/// </summary>
public class AppPayData
{
private Log Log = new Log(AppPayConfig.LogPath); public AppPayData()
{
} //采用排序的Dictionary的好处是方便对数据包进行签名，不用再签名之前再做一次排序
private SortedDictionary<string, object> m_values = new SortedDictionary<string, object>(); /**
* 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 WePayException
**/
public string ToXml()
{
//数据为空时不能转化为xml格式
if ( == m_values.Count)
{
Log.Error(this.GetType().ToString(), "WxPayData数据为空!");
throw new WePayException("WxPayData数据为空!");
} string xml = "<xml>";
foreach (KeyValuePair<string, object> 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 WePayException("WxPayData内部含有值为null的字段!");
} if (pair.Value.GetType() == typeof(int))
{
xml += "<" + pair.Key + ">" + pair.Value + "</" + pair.Key + ">";
}
else if (pair.Value.GetType() == typeof(string))
{
xml += "<" + pair.Key + ">" + "<![CDATA[" + pair.Value + "]]></" + 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 WePayException("WxPayData字段数据类型错误!");
}
}
xml += "</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 WePayException
*/
public SortedDictionary<string, object> 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 WePayException("将空的xml串转换为WxPayData不合法!");
} SafeXmlDocument xmlDoc = new SafeXmlDocument();
xmlDoc.LoadXml(xml);
XmlNode xmlNode = xmlDoc.FirstChild;//获取到根节点<xml>
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 (WePayException ex)
{
throw new WePayException(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<string, object> 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 WePayException("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<string, object> 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 WePayException("WxPayData内部含有值为null的字段!");
} str += string.Format("{0}={1}<br>", 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=" + AppPayConfig.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 WePayException("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 WePayException("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 WePayException("WxPayData签名验证错误!");
} /**
* @获取Dictionary
*/
public SortedDictionary<string, object> GetValues()
{
return m_values;
}
}
}
新建AppPayNotify类
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Web; namespace App.Pay.WePay.AppPay
{
/// <summary>
/// 回调处理基类
/// 主要负责接收微信支付后台发送过来的数据，对数据进行签名验证
/// 子类在此类基础上进行派生并重写自己的回调处理过程
/// </summary>
public class AppPayNotify
{
public HttpContext context { get; set; }
public Log Log = new Log(AppPayConfig.LogPath); public AppPayNotify(HttpContext context)
{
this.context = context;
} /// <summary>
/// 接收从微信支付后台发送过来的数据并验证签名
/// </summary>
/// <returns>微信支付后台返回的数据</returns>
public AppPayData GetNotifyData()
{
//接收从微信后台POST过来的数据
System.IO.Stream s = context.Request.InputStream;
int count = ;
byte[] buffer = new byte[];
StringBuilder builder = new StringBuilder();
while ((count = s.Read(buffer, , )) > )
{
builder.Append(Encoding.UTF8.GetString(buffer, , count));
}
s.Flush();
s.Close();
s.Dispose(); //转换数据格式并验证签名
AppPayData data = new AppPayData();
try
{
data.FromXml(builder.ToString());
}
catch (WePayException ex)
{
//若签名错误，则立即返回结果给微信支付后台
AppPayData res = new AppPayData();
res.SetValue("return_code", "FAIL");
res.SetValue("return_msg", ex.Message);
Log.Error(this.GetType().ToString(), "Sign check error : " + res.ToXml());
context.Response.Write(res.ToXml());
context.Response.End();
} Log.Info(this.GetType().ToString(), "Check sign success");
return data;
} //派生类需要重写这个方法，进行不同的回调处理
public virtual void ProcessNotify()
{ }
}
}
新建AppPayApi类
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks; namespace App.Pay.WePay.AppPay
{
public class AppPayApi
{
public static Log Log = new Log(AppPayConfig.LogPath); /**
* 提交被扫支付API
* 收银员使用扫码设备读取微信用户刷卡授权码以后，二维码或条码信息传送至商户收银台，
* 由商户收银台或者商户后台调用该接口发起支付。
* @param WxPayData inputObj 提交给被扫支付API的参数
* @param int timeOut 超时时间
* @throws WePayException
* @return 成功时返回调用结果，其他抛异常
*/
public static AppPayData Micropay(AppPayData inputObj, int timeOut = )
{
string url = "https://api.mch.weixin.qq.com/pay/micropay";
//检测必填参数
if (!inputObj.IsSet("body"))
{
throw new WePayException("提交被扫支付API接口中，缺少必填参数body！");
}
else if (!inputObj.IsSet("out_trade_no"))
{
throw new WePayException("提交被扫支付API接口中，缺少必填参数out_trade_no！");
}
else if (!inputObj.IsSet("total_fee"))
{
throw new WePayException("提交被扫支付API接口中，缺少必填参数total_fee！");
}
else if (!inputObj.IsSet("auth_code"))
{
throw new WePayException("提交被扫支付API接口中，缺少必填参数auth_code！");
} inputObj.SetValue("spbill_create_ip", WePayConfig.IP);//终端ip
inputObj.SetValue("appid", AppPayConfig.APPID);//公众账号ID
inputObj.SetValue("mch_id", AppPayConfig.MCHID);//商户号
inputObj.SetValue("nonce_str", Guid.NewGuid().ToString().Replace("-", ""));//随机字符串
inputObj.SetValue("sign", inputObj.MakeSign());//签名
string xml = inputObj.ToXml(); var start = DateTime.Now;//请求开始时间 Log.Info("XcxPayApi", "MicroPay request : " + xml);
string response = AppPayHttpService.Post(xml, url, false, timeOut);//调用HTTP通信接口以提交数据到API
Log.Info("XcxPayApi", "MicroPay response : " + response); var end = DateTime.Now;
int timeCost = (int)((end - start).TotalMilliseconds);//获得接口耗时 //将xml格式的结果转换为对象以返回
AppPayData result = new AppPayData();
result.FromXml(response); ReportCostTime(url, timeCost, result);//测速上报 return result;
} /**
*
* 查询订单
* @param WxPayData inputObj 提交给查询订单API的参数
* @param int timeOut 超时时间
* @throws WePayException
* @return 成功时返回订单查询结果，其他抛异常
*/
public static AppPayData OrderQuery(AppPayData inputObj, int timeOut = )
{
string url = "https://api.mch.weixin.qq.com/pay/orderquery";
//检测必填参数
if (!inputObj.IsSet("out_trade_no") && !inputObj.IsSet("transaction_id"))
{
throw new WePayException("订单查询接口中，out_trade_no、transaction_id至少填一个！");
} inputObj.SetValue("appid", AppPayConfig.APPID);//公众账号ID
inputObj.SetValue("mch_id", AppPayConfig.MCHID);//商户号
inputObj.SetValue("nonce_str", GenerateNonceStr());//随机字符串
inputObj.SetValue("sign", inputObj.MakeSign());//签名 string xml = inputObj.ToXml(); var start = DateTime.Now; Log.Info("XcxPayApi", "OrderQuery request : " + xml);
string response = AppPayHttpService.Post(xml, url, false, timeOut);//调用HTTP通信接口提交数据
Log.Info("XcxPayApi", "OrderQuery response : " + response); var end = DateTime.Now;
int timeCost = (int)((end - start).TotalMilliseconds);//获得接口耗时 //将xml格式的数据转化为对象以返回
AppPayData result = new AppPayData();
result.FromXml(response); ReportCostTime(url, timeCost, result);//测速上报 return result;
} /**
*
* 撤销订单API接口
* @param WxPayData inputObj 提交给撤销订单API接口的参数，out_trade_no和transaction_id必填一个
* @param int timeOut 接口超时时间
* @throws WePayException
* @return 成功时返回API调用结果，其他抛异常
*/
public static AppPayData Reverse(AppPayData inputObj, int timeOut = )
{
string url = "https://api.mch.weixin.qq.com/secapi/pay/reverse";
//检测必填参数
if (!inputObj.IsSet("out_trade_no") && !inputObj.IsSet("transaction_id"))
{
throw new WePayException("撤销订单API接口中，参数out_trade_no和transaction_id必须填写一个！");
} inputObj.SetValue("appid", AppPayConfig.APPID);//公众账号ID
inputObj.SetValue("mch_id", AppPayConfig.MCHID);//商户号
inputObj.SetValue("nonce_str", GenerateNonceStr());//随机字符串
inputObj.SetValue("sign", inputObj.MakeSign());//签名
string xml = inputObj.ToXml(); var start = DateTime.Now;//请求开始时间 Log.Info("XcxPayApi", "Reverse request : " + xml); string response = AppPayHttpService.Post(xml, url, true, timeOut); Log.Info("XcxPayApi", "Reverse response : " + response); var end = DateTime.Now;
int timeCost = (int)((end - start).TotalMilliseconds); AppPayData result = new AppPayData();
result.FromXml(response); ReportCostTime(url, timeCost, result);//测速上报 return result;
} /**
*
* 申请退款
* @param WxPayData inputObj 提交给申请退款API的参数
* @param int timeOut 超时时间
* @throws WePayException
* @return 成功时返回接口调用结果，其他抛异常
*/
public static AppPayData Refund(AppPayData inputObj, int timeOut = )
{
string url = "https://api.mch.weixin.qq.com/secapi/pay/refund";
//检测必填参数
if (!inputObj.IsSet("out_trade_no") && !inputObj.IsSet("transaction_id"))
{
throw new WePayException("退款申请接口中，out_trade_no、transaction_id至少填一个！");
}
else if (!inputObj.IsSet("out_refund_no"))
{
throw new WePayException("退款申请接口中，缺少必填参数out_refund_no！");
}
else if (!inputObj.IsSet("total_fee"))
{
throw new WePayException("退款申请接口中，缺少必填参数total_fee！");
}
else if (!inputObj.IsSet("refund_fee"))
{
throw new WePayException("退款申请接口中，缺少必填参数refund_fee！");
}
else if (!inputObj.IsSet("op_user_id"))
{
throw new WePayException("退款申请接口中，缺少必填参数op_user_id！");
} inputObj.SetValue("appid", AppPayConfig.APPID);//公众账号ID
inputObj.SetValue("mch_id", AppPayConfig.MCHID);//商户号
inputObj.SetValue("nonce_str", Guid.NewGuid().ToString().Replace("-", ""));//随机字符串
inputObj.SetValue("sign", inputObj.MakeSign());//签名 string xml = inputObj.ToXml();
var start = DateTime.Now; Log.Info("XcxPayApi", "Refund request : " + xml);
string response = AppPayHttpService.Post(xml, url, true, timeOut);//调用HTTP通信接口提交数据到API
Log.Info("XcxPayApi", "Refund response : " + response); var end = DateTime.Now;
int timeCost = (int)((end - start).TotalMilliseconds);//获得接口耗时 //将xml格式的结果转换为对象以返回
AppPayData result = new AppPayData();
result.FromXml(response); ReportCostTime(url, timeCost, result);//测速上报 return result;
} /**
*
* 查询退款
* 提交退款申请后，通过该接口查询退款状态。退款有一定延时，
* 用零钱支付的退款20分钟内到账，银行卡支付的退款3个工作日后重新查询退款状态。
* out_refund_no、out_trade_no、transaction_id、refund_id四个参数必填一个
* @param WxPayData inputObj 提交给查询退款API的参数
* @param int timeOut 接口超时时间
* @throws WePayException
* @return 成功时返回，其他抛异常
*/
public static AppPayData RefundQuery(AppPayData inputObj, int timeOut = )
{
string url = "https://api.mch.weixin.qq.com/pay/refundquery";
//检测必填参数
if (!inputObj.IsSet("out_refund_no") && !inputObj.IsSet("out_trade_no") &&
!inputObj.IsSet("transaction_id") && !inputObj.IsSet("refund_id"))
{
throw new WePayException("退款查询接口中，out_refund_no、out_trade_no、transaction_id、refund_id四个参数必填一个！");
} inputObj.SetValue("appid", AppPayConfig.APPID);//公众账号ID
inputObj.SetValue("mch_id", AppPayConfig.MCHID);//商户号
inputObj.SetValue("nonce_str", GenerateNonceStr());//随机字符串
inputObj.SetValue("sign", inputObj.MakeSign());//签名 string xml = inputObj.ToXml(); var start = DateTime.Now;//请求开始时间 Log.Info("XcxPayApi", "RefundQuery request : " + xml);
string response = AppPayHttpService.Post(xml, url, false, timeOut);//调用HTTP通信接口以提交数据到API
Log.Info("XcxPayApi", "RefundQuery response : " + response); var end = DateTime.Now;
int timeCost = (int)((end - start).TotalMilliseconds);//获得接口耗时 //将xml格式的结果转换为对象以返回
AppPayData result = new AppPayData();
result.FromXml(response); ReportCostTime(url, timeCost, result);//测速上报 return result;
} /**
* 下载对账单
* @param WxPayData inputObj 提交给下载对账单API的参数
* @param int timeOut 接口超时时间
* @throws WePayException
* @return 成功时返回，其他抛异常
*/
public static AppPayData DownloadBill(AppPayData inputObj, int timeOut = )
{
string url = "https://api.mch.weixin.qq.com/pay/downloadbill";
//检测必填参数
if (!inputObj.IsSet("bill_date"))
{
throw new WePayException("对账单接口中，缺少必填参数bill_date！");
} inputObj.SetValue("appid", AppPayConfig.APPID);//公众账号ID
inputObj.SetValue("mch_id", AppPayConfig.MCHID);//商户号
inputObj.SetValue("nonce_str", GenerateNonceStr());//随机字符串
inputObj.SetValue("sign", inputObj.MakeSign());//签名 string xml = inputObj.ToXml(); Log.Info("XcxPayApi", "DownloadBill request : " + xml);
string response = AppPayHttpService.Post(xml, url, false, timeOut);//调用HTTP通信接口以提交数据到API
Log.Info("XcxPayApi", "DownloadBill result : " + response); AppPayData result = new AppPayData();
//若接口调用失败会返回xml格式的结果
if (response.Substring(, ) == "<xml>")
{
result.FromXml(response);
}
//接口调用成功则返回非xml格式的数据
else
result.SetValue("result", response); return result;
} /**
*
* 转换短链接
* 该接口主要用于扫码原生支付模式一中的二维码链接转成短链接(weixin://wxpay/s/XXXXXX)，
* 减小二维码数据量，提升扫描速度和精确度。
* @param WxPayData inputObj 提交给转换短连接API的参数
* @param int timeOut 接口超时时间
* @throws WePayException
* @return 成功时返回，其他抛异常
*/
public static AppPayData ShortUrl(AppPayData inputObj, int timeOut = )
{
string url = "https://api.mch.weixin.qq.com/tools/shorturl";
//检测必填参数
if (!inputObj.IsSet("long_url"))
{
throw new WePayException("需要转换的URL，签名用原串，传输需URL encode！");
} inputObj.SetValue("appid", AppPayConfig.APPID);//公众账号ID
inputObj.SetValue("mch_id", AppPayConfig.MCHID);//商户号
inputObj.SetValue("nonce_str", GenerateNonceStr());//随机字符串
inputObj.SetValue("sign", inputObj.MakeSign());//签名
inputObj.SetValue("device_info", "wxAPP");//设备名称
string xml = inputObj.ToXml(); var start = DateTime.Now;//请求开始时间 Log.Info("XcxPayApi", "ShortUrl request : " + xml);
string response = AppPayHttpService.Post(xml, url, false, timeOut);
Log.Info("XcxPayApi", "ShortUrl response : " + response); var end = DateTime.Now;
int timeCost = (int)((end - start).TotalMilliseconds); AppPayData result = new AppPayData();
result.FromXml(response);
ReportCostTime(url, timeCost, result);//测速上报 return result;
} /**
*
* 统一下单
* @param WxPaydata inputObj 提交给统一下单API的参数
* @param int timeOut 超时时间
* @throws WePayException
* @return 成功时返回，其他抛异常
*/
public static AppPayData UnifiedOrder(AppPayData inputObj, int timeOut = )
{
string url = "https://api.mch.weixin.qq.com/pay/unifiedorder";
//检测必填参数
if (!inputObj.IsSet("out_trade_no"))
{
throw new WePayException("缺少统一支付接口必填参数out_trade_no！");
}
else if (!inputObj.IsSet("body"))
{
throw new WePayException("缺少统一支付接口必填参数body！");
}
else if (!inputObj.IsSet("total_fee"))
{
throw new WePayException("缺少统一支付接口必填参数total_fee！");
}
else if (!inputObj.IsSet("trade_type"))
{
throw new WePayException("缺少统一支付接口必填参数trade_type！");
} //关联参数
if (inputObj.GetValue("trade_type").ToString() == "JSAPI" && !inputObj.IsSet("openid"))
{
throw new WePayException("统一支付接口中，缺少必填参数openid！trade_type为JSAPI时，openid为必填参数！");
}
if (inputObj.GetValue("trade_type").ToString() == "NATIVE" && !inputObj.IsSet("product_id"))
{
throw new WePayException("统一支付接口中，缺少必填参数product_id！trade_type为JSAPI时，product_id为必填参数！");
} //异步通知url未设置，则使用配置文件中的url
if (!inputObj.IsSet("notify_url"))
{
inputObj.SetValue("notify_url", AppPayConfig.NOTIFY_URL);//异步通知url
} inputObj.SetValue("appid", AppPayConfig.APPID);//公众账号ID
inputObj.SetValue("mch_id", AppPayConfig.MCHID);//商户号
inputObj.SetValue("spbill_create_ip", WePayConfig.IP);//终端ip
inputObj.SetValue("nonce_str", GenerateNonceStr());//随机字符串 //签名
inputObj.SetValue("sign", inputObj.MakeSign());
string xml = inputObj.ToXml(); var start = DateTime.Now; Log.Info("XcxPayApi", "UnfiedOrder request : " + xml);
string response = AppPayHttpService.Post(xml, url, false, timeOut);
Log.Info("XcxPayApi", "UnfiedOrder response : " + response); var end = DateTime.Now;
int timeCost = (int)((end - start).TotalMilliseconds); AppPayData result = new AppPayData();
result.FromXml(response); ReportCostTime(url, timeCost, result);//测速上报 return result;
} /**
*
* 统一下单
* @param WxPaydata inputObj 提交给统一下单API的参数
* @param int timeOut 超时时间
* @throws WePayException
* @return 成功时返回，其他抛异常
*/
public static AppPayData UnifiedOrderApp(AppPayData inputObj, int timeOut = )
{
string url = "https://api.mch.weixin.qq.com/pay/unifiedorder";
//检测必填参数
if (!inputObj.IsSet("out_trade_no"))
{
throw new WePayException("缺少统一支付接口必填参数out_trade_no！");
}
else if (!inputObj.IsSet("body"))
{
throw new WePayException("缺少统一支付接口必填参数body！");
}
else if (!inputObj.IsSet("total_fee"))
{
throw new WePayException("缺少统一支付接口必填参数total_fee！");
}
else if (!inputObj.IsSet("trade_type"))
{
throw new WePayException("缺少统一支付接口必填参数trade_type！");
} //关联参数
if (inputObj.GetValue("trade_type").ToString() == "JSAPI" && !inputObj.IsSet("openid"))
{
throw new WePayException("统一支付接口中，缺少必填参数openid！trade_type为JSAPI时，openid为必填参数！");
}
if (inputObj.GetValue("trade_type").ToString() == "NATIVE" && !inputObj.IsSet("product_id"))
{
throw new WePayException("统一支付接口中，缺少必填参数product_id！trade_type为JSAPI时，product_id为必填参数！");
} //异步通知url未设置，则使用配置文件中的url
if (!inputObj.IsSet("notify_url"))
{
inputObj.SetValue("notify_url", AppPayConfig.NOTIFY_URL);//异步通知url
} inputObj.SetValue("appid", AppPayConfig.APPID);//公众账号ID
inputObj.SetValue("mch_id", AppPayConfig.MCHID);//商户号
inputObj.SetValue("spbill_create_ip", WePayConfig.IP);//终端ip
inputObj.SetValue("nonce_str", GenerateNonceStr());//随机字符串 //签名
inputObj.SetValue("sign", inputObj.MakeSign());
string xml = inputObj.ToXml(); var start = DateTime.Now; Log.Info("XcxPayApi", "UnfiedOrder request : " + xml);
string response = AppPayHttpService.Post(xml, url, false, timeOut);
Log.Info("XcxPayApi", "UnfiedOrder response : " + response); var end = DateTime.Now;
int timeCost = (int)((end - start).TotalMilliseconds); AppPayData result = new AppPayData();
result.FromXml(response); ReportCostTime(url, timeCost, result);//测速上报 return result;
} /**
*
* 关闭订单
* @param WxPayData inputObj 提交给关闭订单API的参数
* @param int timeOut 接口超时时间
* @throws WePayException
* @return 成功时返回，其他抛异常
*/
public static AppPayData CloseOrder(AppPayData inputObj, int timeOut = )
{
string url = "https://api.mch.weixin.qq.com/pay/closeorder";
//检测必填参数
if (!inputObj.IsSet("out_trade_no"))
{
throw new WePayException("关闭订单接口中，out_trade_no必填！");
} inputObj.SetValue("appid", AppPayConfig.APPID);//公众账号ID
inputObj.SetValue("mch_id", AppPayConfig.MCHID);//商户号
inputObj.SetValue("nonce_str", GenerateNonceStr());//随机字符串
inputObj.SetValue("sign", inputObj.MakeSign());//签名
string xml = inputObj.ToXml(); var start = DateTime.Now;//请求开始时间 string response = AppPayHttpService.Post(xml, url, false, timeOut); var end = DateTime.Now;
int timeCost = (int)((end - start).TotalMilliseconds); AppPayData result = new AppPayData();
result.FromXml(response); ReportCostTime(url, timeCost, result);//测速上报 return result;
} /**
*
* 测速上报
* @param string interface_url 接口URL
* @param int timeCost 接口耗时
* @param WxPayData inputObj参数数组
*/
private static void ReportCostTime(string interface_url, int timeCost, AppPayData inputObj)
{
//如果不需要进行上报
if (WePayConfig.REPORT_LEVENL == )
{
return;
} //如果仅失败上报
if (WePayConfig.REPORT_LEVENL == && inputObj.IsSet("return_code") && inputObj.GetValue("return_code").ToString() == "SUCCESS" &&
inputObj.IsSet("result_code") && inputObj.GetValue("result_code").ToString() == "SUCCESS")
{
return;
} //上报逻辑
AppPayData data = new AppPayData();
data.SetValue("interface_url", interface_url);
data.SetValue("execute_time_", timeCost);
//返回状态码
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"));
}
//业务结果
if (inputObj.IsSet("result_code"))
{
data.SetValue("result_code", inputObj.GetValue("result_code"));
}
//错误代码
if (inputObj.IsSet("err_code"))
{
data.SetValue("err_code", inputObj.GetValue("err_code"));
}
//错误代码描述
if (inputObj.IsSet("err_code_des"))
{
data.SetValue("err_code_des", inputObj.GetValue("err_code_des"));
}
//商户订单号
if (inputObj.IsSet("out_trade_no"))
{
data.SetValue("out_trade_no", inputObj.GetValue("out_trade_no"));
}
//设备号
if (inputObj.IsSet("device_info"))
{
data.SetValue("device_info", inputObj.GetValue("device_info"));
} try
{
Report(data);
}
catch (WePayException ex)
{
//不做任何处理
}
} /**
*
* 测速上报接口实现
* @param WxPayData inputObj 提交给测速上报接口的参数
* @param int timeOut 测速上报接口超时时间
* @throws WePayException
* @return 成功时返回测速上报接口返回的结果，其他抛异常
*/
public static AppPayData Report(AppPayData inputObj, int timeOut = )
{
string url = "https://api.mch.weixin.qq.com/payitil/report";
//检测必填参数
if (!inputObj.IsSet("interface_url"))
{
throw new WePayException("接口URL，缺少必填参数interface_url！");
}
if (!inputObj.IsSet("return_code"))
{
throw new WePayException("返回状态码，缺少必填参数return_code！");
}
if (!inputObj.IsSet("result_code"))
{
throw new WePayException("业务结果，缺少必填参数result_code！");
}
if (!inputObj.IsSet("user_ip"))
{
throw new WePayException("访问接口IP，缺少必填参数user_ip！");
}
if (!inputObj.IsSet("execute_time_"))
{
throw new WePayException("接口耗时，缺少必填参数execute_time_！");
} inputObj.SetValue("appid", AppPayConfig.APPID);//公众账号ID
inputObj.SetValue("mch_id", AppPayConfig.MCHID);//商户号
inputObj.SetValue("user_ip", WePayConfig.IP);//终端ip
inputObj.SetValue("time", DateTime.Now.ToString("yyyyMMddHHmmss"));//商户上报时间
inputObj.SetValue("nonce_str", GenerateNonceStr());//随机字符串
inputObj.SetValue("sign", inputObj.MakeSign());//签名
string xml = inputObj.ToXml(); Log.Info("XcxPayApi", "Report request : " + xml); string response = AppPayHttpService.Post(xml, url, false, timeOut); Log.Info("XcxPayApi", "Report response : " + response); AppPayData result = new AppPayData();
result.FromXml(response);
return result;
} /**
* 根据当前系统时间加随机序列来生成订单号
* @return 订单号
*/
public static string GenerateOutTradeNo()
{
var ran = new Random();
return string.Format("{0}{1}{2}", AppPayConfig.MCHID, DateTime.Now.ToString("yyyyMMddHHmmss"), ran.Next());
} /**
* 生成时间戳，标准北京时间，时区为东八区，自1970年1月1日 0点0分0秒以来的秒数
* @return 时间戳
*/
public static string GenerateTimeStamp()
{
TimeSpan ts = DateTime.UtcNow - new DateTime(, , , , , , );
return Convert.ToInt64(ts.TotalSeconds).ToString();
} /**
* 生成随机串，随机串包含字母或数字
* @return 随机串
*/
public static string GenerateNonceStr()
{
return Guid.NewGuid().ToString().Replace("-", "");
}
}
}
接下来是业务类，注意业务类中不必再传微信登录凭证。
using App.Common.Extension;
using App.Pay.WePay.AppPay;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Configuration;
using System.Web.Mvc; namespace App.WebTest.Controllers
{
public class WeAppPayController : BaseController
{
/// <summary>
/// 微信app支付
/// </summary>
/// <param name="oidStr">订单编号</param>
/// <returns></returns>
public ActionResult WxPayApp(string oidStr)
{
// App调用只能传参
int[] oIds = Serialize.JsonTo<List<int>>(oidStr).ToArray(); #region 验证订单是否有效 decimal payPrice = ;
string detail = ""; /// 验证订单是否有效，并统计订单总金额
/// ... #endregion #region 统一下单
try
{
//string userId = LoginUser.Id.ToString();
var address = WebConfigurationManager.AppSettings["WxAppNotifyUrl"].ToString();
AppPayData data = new AppPayData();
data.SetValue("body", "民政社工培训-课程购买");
//data.SetValue("attach", userId + "|" + String.Join(",", oIds).ToString());
data.SetValue("attach", String.Join(",", oIds).ToString());
Random rd = new Random();
var payNum = DateTime.Now.ToString("yyyyMMddHHmmss") + rd.Next(, ).ToString().PadLeft(, '');
data.SetValue("out_trade_no", payNum);
data.SetValue("detail", detail.Substring(, detail.Length - ));
data.SetValue("total_fee", Convert.ToInt32(payPrice * ));
data.SetValue("time_start", DateTime.Now.ToString("yyyyMMddHHmmss"));
data.SetValue("time_expire", DateTime.Now.AddMinutes().ToString("yyyyMMddHHmmss"));
data.SetValue("notify_url", address); //注意，这里交易方式是APP
data.SetValue("trade_type", "APP"); AppPayData result = AppPayApi.UnifiedOrder(data);
var appid = "";
var partnerid = "";
var prepayid = "";
var package = "";
var nonceStr = "";
var timestamp = "";
var sign = "";
if (!result.IsSet("appid") || !result.IsSet("prepay_id") || result.GetValue("prepay_id").ToString() == "")
{
return Json(false, "下单失败！");
}
else
{
//统一下单
/// 修改订单状态
//OrderBll.Value.UpdateOrderApp(oIds, payNum); appid = result.GetValue("appid").ToString();
nonceStr = result.GetValue("nonce_str").ToString();
partnerid = result.GetValue("mch_id").ToString();
prepayid = result.GetValue("prepay_id").ToString();
package = "Sign=WXPay";// "prepay_id=" + result.GetValue("prepay_id").ToString();
}
var signType = "MD5";
timestamp = ((DateTime.Now.Ticks - TimeZone.CurrentTimeZone.ToLocalTime(new DateTime(, , )).Ticks) / ).ToString();
AppPayData applet = new AppPayData();
applet.SetValue("appid", appid);
applet.SetValue("noncestr", nonceStr);
applet.SetValue("package", package);
applet.SetValue("partnerid", partnerid);
applet.SetValue("prepayid", prepayid);
//applet.SetValue("signType", signType);
applet.SetValue("timestamp", timestamp);
sign = applet.MakeSign();
return Json(new { appid, partnerid, prepayid, package, nonceStr, timestamp, sign });
}
catch (Exception ex)
{
return Json(false, "缺少参数");
} #endregion } /// <summary>
/// 微信支付回调
/// </summary>
/// <returns></returns>
public string WxAppNotifyUrl()
{
Pay.Log Log = new Pay.Log(AppPayConfig.LogPath);
Log.Info("WxAppNotifyUrl", "支付回调");
AppPayNotify notify = new AppPayNotify(System.Web.HttpContext.Current);
AppPayData notifyData = notify.GetNotifyData(); //检查支付结果中transaction_id是否存在
if (!notifyData.IsSet("transaction_id"))
{
//若transaction_id不存在，则立即返回结果给微信支付后台
AppPayData res = new AppPayData();
res.SetValue("return_code", "FAIL");
res.SetValue("return_msg", "支付结果中微信订单号不存在");
Log.Error(this.GetType().ToString(), "The Pay result is error : " + res.ToXml());
Response.Write(res.ToXml());
Response.End();
} string transaction_id = notifyData.GetValue("transaction_id").ToString(); //查询订单，判断订单真实性
if (!AppQueryOrder(transaction_id))
{
//若订单查询失败，则立即返回结果给微信支付后台
AppPayData res = new AppPayData();
res.SetValue("return_code", "FAIL");
res.SetValue("return_msg", "订单查询失败");
Log.Error(this.GetType().ToString(), "Order query failure : " + res.ToXml()); Response.Write(res.ToXml());
Response.End();
}
//查询订单成功
else
{
AppPayData res = new AppPayData();
res.SetValue("return_code", "SUCCESS");
res.SetValue("return_msg", "OK");
Log.Info(this.GetType().ToString(), "Order query success : " + res.ToXml());
Log.Info(this.GetType().ToString(), "Order query success,notifyData : " + notifyData.ToXml());
var returnCode = notifyData.GetValue("return_code").ToString();
var transactionNo = transaction_id;//微信订单号
var outTradeNo = notifyData.GetValue("out_trade_no").ToString();//自定义订单号
var attach = notifyData.GetValue("attach").ToString();//身份证
var endTime = notifyData.GetValue("time_end").ToString();//交易结束时间
//var body = notifyData.GetValue("body").ToString();//projectIdlist
var totalFee = notifyData.GetValue("total_fee").ToString(); ;//支付金额 int userId = Convert.ToInt32(attach.Split('|')[]);
string msg;
try
{
///修改数据库订单状态
//var result = OrderBll.Value.CompleteWePay(userId, totalFee, transactionNo, returnCode, outTradeNo, attach, endTime, out msg);
var result = true; Log.Info(this.GetType().ToString(), "CompleteWePay:" + result);
}
catch (Exception e)
{
Log.Error(this.GetType().ToString(), "CompleteWePay:" + e.ToString());
} Response.Write(res.ToXml());
Response.End();
} return "";
} /// <summary>
/// 查询订单
/// </summary>
/// <param name="transaction_id"></param>
/// <returns></returns>
private bool AppQueryOrder(string transaction_id)
{
AppPayData req = new AppPayData();
req.SetValue("transaction_id", transaction_id);
AppPayData res = AppPayApi.OrderQuery(req);
if (res.GetValue("return_code").ToString() == "SUCCESS" && res.GetValue("result_code").ToString() == "SUCCESS")
{
return true;
}
else
{
return false;
}
}
}
}