上周努努力,做完了app端的微信支付,走过了不少的坑坑洼洼,现在写个小总结开发步骤如下:
1.开通微信的商户平台,在账户中心的api安全中下载安全证书
2.下载安全证书后,在api秘钥中设置秘钥。
3.代码开发:
(1)在配置文件中设置基本信息
<!--微信开放平台审核通过的应用APPID-->
<add key="wx_appid" value=""/>
<!--微信支付分配的商户号APPID-->
<add key="wx_mch_id" value=""/>
<!--wx_key 微信key 密钥-->
<add key="wx_key" value=""/>
<!--wxpay_notifyurl 请求回调网址-->
<add key="wxpay_notifyurl" value=""/>
(2)创建预支付单
using System;
using System.Collections.Generic;
using System.Data;
using System.IO;
using System.Linq;
using System.Net;
using System.Net.Security;
using System.Security.Cryptography.X509Certificates;
using System.Text;
using System.Web;
using System.Web.Http;
using System.Xml;
using Travel.Api.AliPayAcc;
using Travel.Business.Order;
using Travel.Common;
using Travel.Common.Bases;
using Travel.Common.Enum;
using Travel.Model.Order;
namespace Travel.Api.Controllers
{
public class WeChatPayController : ApiController
{
// GET: WrChatPay
[HttpGet]
public BaseResult GoToPay(Guid? orderId)
{
if (orderId.HasValue)
{
var orderinfo = OrderInfoManager.Instance.GetById(orderId);
//微信支付 基础配置信息
string wx_appid = System.Web.Configuration.WebConfigurationManager.AppSettings["wx_appid"].ToString();
//微信开放平台审核通过的应用
string wx_mch_id = System.Web.Configuration.WebConfigurationManager.AppSettings["wx_mch_id"].ToString();
//微信支付分配的商户号
string wx_nonce_str = GetRandomString(20); //随机字符串,不长于32位
string strcode = "驿马旅行-购买产品";
byte[] buffer = Encoding.UTF8.GetBytes(strcode);
string wx_body = Encoding.UTF8.GetString(buffer, 0, buffer.Length);
string wx_out_trade_no = orderinfo.OrderCode + GetRandomString(6);
string wx_total_fee = (orderinfo.PayAmount * 100).ToString("f0"); //;//订单总金额,单位为分,详见支付金额
string wx_spbill_create_ip = GetWebClientIp(); //// 用户端实际ip
string wx_notify_url =
System.Web.Configuration.WebConfigurationManager.AppSettings["wxpay_notifyurl"].ToString();
string wx_trade_type = "APP";
var dic = new Dictionary<string, string>
{
{"appid", wx_appid},
{"mch_id", wx_mch_id},
{"nonce_str", wx_nonce_str},
{"body", wx_body},
{"out_trade_no", wx_out_trade_no}, //商户自己的订单号码
{"total_fee", wx_total_fee},
{"spbill_create_ip", wx_spbill_create_ip}, //服务器的IP地址
{"notify_url", wx_notify_url}, //异步通知的地址,不能带参数
{"trade_type", wx_trade_type}
};
//加入签名
dic.Add("sign", GetSignString(dic));
var sb = new StringBuilder();
sb.Append("<xml>");
foreach (var d in dic)
{
sb.Append("<" + d.Key + ">" + d.Value + "</" + d.Key + ">");
}
sb.Append("</xml>");
var xml = new XmlDocument();
// xml.LoadXml(GetPostString("https://api.mch.weixin.qq.com/pay/unifiedorder", sb.ToString()));
CookieCollection coo = new CookieCollection();
Encoding en = Encoding.GetEncoding("UTF-8");
HttpWebResponse response = CreatePostHttpResponse("https://api.mch.weixin.qq.com/pay/unifiedorder",
sb.ToString(), en);
//打印返回值
Stream stream = response.GetResponseStream(); //获取响应的字符串流
StreamReader sr = new StreamReader(stream); //创建一个stream读取流
string html = sr.ReadToEnd(); //从头读到尾,放到字符串html
CreateLog.SaveLogs(html, 1);
//Console.WriteLine(html);
xml.LoadXml(html);
//对请求返回值 进行处理
var root = xml.DocumentElement;
DataSet ds = new DataSet();
StringReader stram = new StringReader(html);
XmlTextReader reader = new XmlTextReader(stram);
ds.ReadXml(reader);
string return_code = ds.Tables[0].Rows[0]["return_code"].ToString();
//通信成功
string result_code = ds.Tables[0].Rows[0]["result_code"].ToString(); //业务结果
if (result_code.ToUpper() == "SUCCESS")
{
string str = GetTimeStamp();
var res = new Dictionary<string, string>
{
{"appid", wx_appid},
{"partnerid", wx_mch_id},
{"prepayid", root.SelectSingleNode("/xml/prepay_id").InnerText},
{"noncestr", dic["nonce_str"]},
{"timestamp",str},
{"package", "Sign=WXPay"}
};
var paySing = GetSignString(dic);
var obj = new
{
appid = wx_appid,
partnerid = wx_mch_id,
prepayid = ds.Tables[0].Rows[0]["prepay_id"].ToString(),
noncestr = wx_nonce_str,
timestamp = str,
sign = GetSignString(res),
};
return new BaseResult(true, obj);
}
else
{
return new BaseResult(false, null, "请求失败");
}
}
else
{
return new BaseResult(false, null, "参数错误");
}
}
[HttpGet]
public string WeChatPayCallBack()
{
try
{
CreateLog.SaveLogs("==========================================", 1);
HttpContextBase context = (HttpContextBase)Request.Properties["MS_HttpContext"];
HttpRequestBase request = context.Request;
string status = request["result_code"];
if (status == "SUCCESS")
{
var oderInfo = OrderInfoManager.Instance.GetByField("OrderCode", request["out_trade_no"].Substring(0, request["out_trade_no"].ToString().Length - 6)).FirstOrDefault();
if (oderInfo != null)
{
PaymentInfo info = new PaymentInfo()
{
OrderGuid = oderInfo.Guid,
PayState = 1,
PayMethod = (int)PayMethod.支付宝支付,
Guid = Guid.NewGuid(),
Mark = (int)DataMark.正常,
PayDateTime = DateTime.Now,
PayMoney = Convert.ToDecimal(request["total_fee"]) / 100,
Qid = request["transaction_id"]
};
PaymentInfoManager.Instance.Insert(info);
}
}
}
catch (Exception e)
{
e.WriteLog(e.Message);
}
return "111111111";
}
#region 微信辅助方法
/// <summary>
/// 从字符串里随机得到,规定个数的字符串.
/// </summary>
/// <param name="allChar"></param>
/// <param name="CodeCount"></param>
/// <returns></returns>
public static string GetRandomString(int CodeCount)
{
string allChar = "1,2,3,4,5,6,7,8,9,A,B,C,D,E,F,G,H,i,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z";
string[] allCharArray = allChar.Split(',');
string RandomCode = "";
int temp = -1;
Random rand = new Random();
for (int i = 0; i < CodeCount; i++)
{
if (temp != -1)
{
rand = new Random(temp * i * ((int)DateTime.Now.Ticks));
}
int t = rand.Next(allCharArray.Length - 1);
while (temp == t)
{
t = rand.Next(allCharArray.Length - 1);
}
temp = t;
RandomCode += allCharArray[t];
}
return RandomCode;
}
public static string GetWebClientIp()
{
string userIP = "IP";
try
{
if (System.Web.HttpContext.Current == null
|| System.Web.HttpContext.Current.Request == null
|| System.Web.HttpContext.Current.Request.ServerVariables == null)
return "";
string CustomerIP = "";
//CDN加速后取到的IP
CustomerIP = System.Web.HttpContext.Current.Request.Headers["Cdn-Src-Ip"];
if (!string.IsNullOrEmpty(CustomerIP))
{
return CustomerIP;
}
CustomerIP = System.Web.HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"];
if (!String.IsNullOrEmpty(CustomerIP))
return CustomerIP;
if (System.Web.HttpContext.Current.Request.ServerVariables["HTTP_VIA"] != null)
{
CustomerIP = System.Web.HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"];
if (CustomerIP == null)
CustomerIP = System.Web.HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"];
}
else
{
CustomerIP = System.Web.HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"];
}
if (string.Compare(CustomerIP, "unknown", true) == 0)
return System.Web.HttpContext.Current.Request.UserHostAddress;
return CustomerIP;
}
catch { }
return userIP;
}
private static bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors)
{
return true; //总是接受
}
public static HttpWebResponse CreatePostHttpResponse(string url, string datas, Encoding charset)
{
HttpWebRequest request = null;
//HTTPSQ请求
ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult);
request = WebRequest.Create(url) as HttpWebRequest;
request.ProtocolVersion = HttpVersion.Version10;
request.Method = "POST";
request.ContentType = "application/x-www-form-urlencoded";
//如果需要POST数据
//if (!(parameters == null || parameters.Count == 0))
//{
StringBuilder buffer = new StringBuilder();
//int i = 0;
//foreach (string key in parameters.Keys)
//{
// if (i > 0)
// {
// buffer.AppendFormat("&{0}={1}", key, parameters[key]);
// }
// else
// {
// buffer.AppendFormat("{0}={1}", key, parameters[key]);
// }
// i++;
//}
buffer.AppendFormat(datas);
byte[] data = charset.GetBytes(buffer.ToString());
using (Stream stream = request.GetRequestStream())
{
stream.Write(data, 0, data.Length);
}
//}
return request.GetResponse() as HttpWebResponse;
}
public string GetSignString(Dictionary<string, string> dic)
{
string key = System.Web.Configuration.WebConfigurationManager.AppSettings["wx_key"].ToString(); ;//商户平台 API安全里面设置的KEY 32位长度
//排序
dic = dic.OrderBy(d => d.Key).ToDictionary(d => d.Key, d => d.Value);
//连接字段
var sign = dic.Aggregate("", (current, d) => current + (d.Key + "=" + d.Value + "&"));
sign += "key=" + key;
//MD5
sign = System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(sign, "MD5").ToUpper();
return sign;
}
/// <summary>
/// 获取时间戳
/// </summary>
/// <returns></returns>
public static string GetTimeStamp()
{
TimeSpan ts = DateTime.UtcNow - new DateTime(1970, 1, 1, 0, 0, 0, 0);
return Convert.ToInt64(ts.TotalSeconds).ToString();
}
#endregion
}
}
(3)设置回调方法
using System;
using System.Collections.Generic;
using System.Data;
using System.IO;
using System.Linq;
using System.Text;
using System.Web;
using System.Web.Mvc;
using System.Xml;
using Travel.Business.Order;
using Travel.Common.Enum;
using Travel.Model.Order;
using Travel.WeChat.WeCahtCode;
namespace Travel.WeChat.Controllers
{
public class WeChatPayController : Controller
{
// GET: WeChatPay
public ActionResult Index()
{
CreateLog.SaveLogs("========开始============", 1);
String xmlData = getPostStr();//获取请求数据
//CreateLog.SaveLogs(xmlData, 1);
if (xmlData == "")
{
}
else
{
// CreateLog.SaveLogs("22222222222222222222", 1);
var dic = new Dictionary<string, string>
{
{"return_code", "SUCCESS"},
{"return_msg","OK"}
};
var sb = new StringBuilder();
sb.Append("<xml>");
foreach (var d in dic)
{
sb.Append("<" + d.Key + ">" + d.Value + "</" + d.Key + ">");
}
sb.Append("</xml>");
//把数据重新返回给客户端
DataSet ds = new DataSet();
StringReader stram = new StringReader(xmlData);
XmlTextReader datareader = new XmlTextReader(stram);
ds.ReadXml(datareader);
if (ds.Tables[0].Rows[0]["return_code"].ToString() == "SUCCESS")
{
string wx_appid = "";//微信开放平台审核通过的应用APPID
string wx_mch_id = "";//微信支付分配的商户号
string wx_nonce_str = "";// 随机字符串,不长于32位
string wx_sign = "";//签名,详见签名算法
string wx_result_code = "";//SUCCESS/FAIL
string wx_return_code = "";
string wx_openid = "";//用户在商户appid下的唯一标识
string wx_is_subscribe = "";//用户是否关注公众账号,Y-关注,N-未关注,仅在公众账号类型支付有效
string wx_trade_type = "";// APP
string wx_bank_type = "";// 银行类型,采用字符串类型的银行标识,银行类型见银行列表
string wx_fee_type = "";// 货币类型,符合ISO4217标准的三位字母代码,默认人民币:CNY,其他值列表详见货币类型
string wx_transaction_id = "";//微信支付订单号
string wx_out_trade_no = "";//商户系统的订单号,与请求一致。
string wx_time_end = "";// 支付完成时间,格式为yyyyMMddHHmmss,如2009年12月25日9点10分10秒表示为20091225091010。其他详见时间规则
int wx_total_fee = -1;// 订单总金额,单位为分
int wx_cash_fee = -1;//现金支付金额订单现金支付金额,详见支付金额
#region 数据解析
//列 是否存在
string signstr = "";//需要前面的字符串
//wx_appid
if (ds.Tables[0].Columns.Contains("appid"))
{
wx_appid = ds.Tables[0].Rows[0]["appid"].ToString();
if (!string.IsNullOrEmpty(wx_appid))
{
signstr += "appid=" + wx_appid;
}
}
//wx_bank_type
if (ds.Tables[0].Columns.Contains("bank_type"))
{
wx_bank_type = ds.Tables[0].Rows[0]["bank_type"].ToString();
if (!string.IsNullOrEmpty(wx_bank_type))
{
signstr += "&bank_type=" + wx_bank_type;
}
}
//wx_cash_fee
if (ds.Tables[0].Columns.Contains("cash_fee"))
{
wx_cash_fee = Convert.ToInt32(ds.Tables[0].Rows[0]["cash_fee"].ToString());
signstr += "&cash_fee=" + wx_cash_fee;
}
//wx_fee_type
if (ds.Tables[0].Columns.Contains("fee_type"))
{
wx_fee_type = ds.Tables[0].Rows[0]["fee_type"].ToString();
if (!string.IsNullOrEmpty(wx_fee_type))
{
signstr += "&fee_type=" + wx_fee_type;
}
}
//wx_is_subscribe
if (ds.Tables[0].Columns.Contains("is_subscribe"))
{
wx_is_subscribe = ds.Tables[0].Rows[0]["is_subscribe"].ToString();
if (!string.IsNullOrEmpty(wx_is_subscribe))
{
signstr += "&is_subscribe=" + wx_is_subscribe;
}
}
//wx_mch_id
if (ds.Tables[0].Columns.Contains("mch_id"))
{
wx_mch_id = ds.Tables[0].Rows[0]["mch_id"].ToString();
if (!string.IsNullOrEmpty(wx_mch_id))
{
signstr += "&mch_id=" + wx_mch_id;
}
}
//wx_nonce_str
if (ds.Tables[0].Columns.Contains("nonce_str"))
{
wx_nonce_str = ds.Tables[0].Rows[0]["nonce_str"].ToString();
if (!string.IsNullOrEmpty(wx_nonce_str))
{
signstr += "&nonce_str=" + wx_nonce_str;
}
}
//wx_openid
if (ds.Tables[0].Columns.Contains("openid"))
{
wx_openid = ds.Tables[0].Rows[0]["openid"].ToString();
if (!string.IsNullOrEmpty(wx_openid))
{
signstr += "&openid=" + wx_openid;
}
}
//wx_out_trade_no
if (ds.Tables[0].Columns.Contains("out_trade_no"))
{
wx_out_trade_no = ds.Tables[0].Rows[0]["out_trade_no"].ToString();
if (!string.IsNullOrEmpty(wx_out_trade_no))
{
signstr += "&out_trade_no=" + wx_out_trade_no;
}
}
//wx_result_code
if (ds.Tables[0].Columns.Contains("result_code"))
{
wx_result_code = ds.Tables[0].Rows[0]["result_code"].ToString();
if (!string.IsNullOrEmpty(wx_result_code))
{
signstr += "&result_code=" + wx_result_code;
}
}
//wx_result_code
if (ds.Tables[0].Columns.Contains("return_code"))
{
wx_return_code = ds.Tables[0].Rows[0]["return_code"].ToString();
if (!string.IsNullOrEmpty(wx_return_code))
{
signstr += "&return_code=" + wx_return_code;
}
}
//wx_sign
if (ds.Tables[0].Columns.Contains("sign"))
{
wx_sign = ds.Tables[0].Rows[0]["sign"].ToString();
}
//wx_time_end
if (ds.Tables[0].Columns.Contains("time_end"))
{
wx_time_end = ds.Tables[0].Rows[0]["time_end"].ToString();
if (!string.IsNullOrEmpty(wx_time_end))
{
signstr += "&time_end=" + wx_time_end;
}
}
//wx_total_fee
if (ds.Tables[0].Columns.Contains("total_fee"))
{
wx_total_fee = Convert.ToInt32(ds.Tables[0].Rows[0]["total_fee"].ToString());
signstr += "&total_fee=" + wx_total_fee;
}
//wx_trade_type
if (ds.Tables[0].Columns.Contains("trade_type"))
{
wx_trade_type = ds.Tables[0].Rows[0]["trade_type"].ToString();
if (!string.IsNullOrEmpty(wx_trade_type))
{
signstr += "&trade_type=" + wx_trade_type;
}
}
//wx_transaction_id
if (ds.Tables[0].Columns.Contains("transaction_id"))
{
wx_transaction_id = ds.Tables[0].Rows[0]["transaction_id"].ToString();
if (!string.IsNullOrEmpty(wx_transaction_id))
{
signstr += "&transaction_id=" + wx_transaction_id;
}
}
#endregion
//追加key 密钥
signstr += "&key=" + System.Web.Configuration.WebConfigurationManager.AppSettings["wx_key"].ToString();
CreateLog.SaveLogs("签名字符串" + signstr, 1);
//签名正确
string orderStrwhere = "ordernumber='" + wx_out_trade_no + "'";
if (wx_sign == System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(signstr, "MD5").ToUpper())
{
CreateLog.SaveLogs("开始付款",1);
//签名正确 处理订单操作逻辑
var oderInfo = OrderInfoManager.Instance.GetByField("OrderCode", wx_out_trade_no.Substring(0, wx_out_trade_no.ToString().Length - 6)).FirstOrDefault();
if (oderInfo.OrderState != (int) OrderState.代付款)
{
CreateLog.SaveLogs("支付成功!但是在此发出请求" , 1);
return null;
}
if (oderInfo != null)
{
PaymentInfo info = new PaymentInfo()
{
OrderGuid = oderInfo.Guid,
PayState = 1,
PayMethod = (int)PayMethod.微信支付,
Guid = Guid.NewGuid(),
Mark = (int)DataMark.正常,
PayDateTime = DateTime.Now,
PayMoney = Convert.ToDecimal(wx_total_fee) / 100,
Qid = wx_transaction_id
};
PaymentInfoManager.Instance.Insert(info);
}
CreateLog.SaveLogs("状态修改结束", 1);
}
else
{
}
{
//追加备注信息
CreateLog.SaveLogs("签名失败", 1);
}
}
else
{
// 返回信息,如非空,为错误原因 签名失败 参数格式校验错误
string return_msg = ds.Tables[0].Rows[0]["return_msg"].ToString();
CreateLog.SaveLogs("支付失败", 1);
}
}
return View();
}
//获得Post过来的数据
public string getPostStr()
{
Int32 intLen = Convert.ToInt32(Request.InputStream.Length);
byte[] b = new byte[intLen];
Request.InputStream.Read(b, 0, intLen);
return System.Text.Encoding.UTF8.GetString(b);
}
}
}
注意:在生成预支付订单的时候要进行两次签名,第一次请求预支付订单号的签名一次,生成之后再进行一次签名,将数据返回给app端 然后app端调用就好,不然在安卓端会没有效果,而在苹果端会提示签名失败