using CY_PUBLIC_LIBRARY;
using CY_PUBLIC_LIBRARY
.AppConfigurtaion;
using CY_PUBLIC_LIBRARY
.BaseModels;
using CY_PUBLIC_LIBRARY
.Extension;
using CY_PUBLIC_LIBRARY
.Middleware;
using CY_PUBLIC_LIBRARY
.WebRequestHelp;
using Microsoft
.AspNetCore
.Authorization;
using Microsoft
.AspNetCore
.Http;
using Microsoft
.AspNetCore
.Mvc;
using System;
using System
.Collections
.Generic;
using System
.IO;
using System
.Linq;
using System
.Security
.Cryptography;
using System
.Text;
using System
.Threading
.Tasks;
using System
.Xml;
using System
.Drawing
.Imaging;
using DoMain;
using Org
.BouncyCastle
.Asn1
.X509;
using System
.Diagnostics;
using Newtonsoft
.Json;
using Model
.cxbd;
using Model
.sys_model;
using Model
.hospital_model;
namespace APP_API
.Controllers
.wechatControllers
{
/// <summary>
/// 微信支付
/// </summary>
[Route("api/[controller]")]
[ApiController]
[Authorize]
[ApiExplorerSettings(GroupName = "base_data")]
public class wechat_payController : BaseApiController
{
public wechat_payController(IFreeSql fsql) : base(fsql)
{
}
/// <summary>
/// 微信支付下单
/// </summary>
/// <param name="payItem"></param>
/// <returns></returns>
[HttpPost("pay")]
[Authorize]
public ActionResult<retObject<payRetModel>> Pay([FromBody] payOrderModel payItem)
{
var app_user = _fsql
.Select<app_user>(_jwt
.user_info
.user_id)
.ToOne
();
var order = _fsql
.Select<sys_order>(payItem
.order_id)
.ToOne
();
if (order == null)
{
throw new ServiceException("订单不存在");
}
if (order
.status != (int)wechat_refund_status
.待付款)
{
throw new ServiceException("订单状态有误");
}
order
.guid = Guid
.NewGuid
().ToString("N");
//order
.status = (int)wechat_refund_status
.待接单;
_fsql
.Update<sys_order>(order
.order_id)
.Set(x=>x
.guid,order
.guid)
.ExecuteAffrows
();
var domain = new orderDomain(_fsql);
var payfee = Convert
.ToInt32(payItem
.pay * 100);
var order_pay = new order_pay
()
{
amount = payItem
.pay,
rl = false,
pay_type_id = 2,
is_app = true,
order_id = payItem
.order_id
};
var pay_id = _fsql
.Insert(order_pay)
.ExecuteIdentity
();
var name = app_user
.name;
if (name
.Length > 40)
{
name = name
.Substring(0, 40) + "
...";
}
name = name
.Replace("<", "")
.Replace(">", "");
var nonStr = CommandHelp
.GetGuid
();
var PayNotifyUrl = AppConfigurtaionServices
.Configuration["Wechat:PayNotifyUrl"];
var appid = AppConfigurtaionServices
.Configuration["Wechat:AppId"];
var mch_id = AppConfigurtaionServices
.Configuration["Wechat:MchId"];
var ipStr = AppConfigurtaionServices
.Configuration["Wechat:Ip"];
var key = AppConfigurtaionServices
.Configuration["Wechat:Key"];
var postData = "appid=" + appid + "&attach=" + pay_id + "&body=" + name + "&mch_id=" + mch_id + "&nonce_str=" + nonStr + "¬ify_url=" + PayNotifyUrl + "&openid=" + app_user
.open_id + "&out_trade_no=" + pay_id + "&spbill_create_ip=" + ipStr + "&total_fee=" + payfee + "&trade_type=JSAPI";
postData += "&key=" + key;
CyLogHelp
.WriteLog(postData, "微信下单");
var md5 = MD5
.Create
();
var bs2 = md5
.ComputeHash(Encoding
.UTF8
.GetBytes(postData));
var sb2 = new StringBuilder
();
foreach (byte bb in bs2)
{
sb2
.Append(bb
.ToString("x2"));
}
postData = sb2
.ToString
().ToUpper
();
var orderXml = "<xml>"
+ "<appid>" + appid + "</appid>"
+ "<attach>" + pay_id + "</attach>"
+ "<body>" + name + "</body>"
+ "<mch_id>" + mch_id + "</mch_id>"
+ "<nonce_str>" + nonStr + "</nonce_str>"
+ "<notify_url>" + PayNotifyUrl + "</notify_url>"
+ "<openid>" + app_user
.open_id + "</openid>"
+ "<out_trade_no>" + pay_id + "</out_trade_no>"
+ "<spbill_create_ip>" + ipStr + "</spbill_create_ip>"
+ "<total_fee>" + payfee + "</total_fee>"
+ "<trade_type>JSAPI</trade_type>"
+ "<sign>" + postData + "</sign>"
+ "</xml>";
var retStr = WebRequsetHelp
.PostRequestData("https://api
.mch
.weixin
.qq
.com/pay/unifiedorder", orderXml, WebRequsetContentType
.Form表单);
if (retStr != "" && retStr
.IndexOf("prepay_id") > 0)
{
XmlDocument doc = new XmlDocument
();
doc
.LoadXml(retStr);
XmlNodeList list = doc
.GetElementsByTagName("xml");
XmlNode xn = list[0];
var prepay_id = xn
.SelectSingleNode("//prepay_id")
.InnerText;
if (!string
.IsNullOrEmpty(prepay_id))
{
var timeSpanStr = DateTime
.Now
.ConvertShortDateTimeInt
().ToString
();
var postStr = "appId=" + appid + "&nonceStr=" + nonStr + "&package=prepay_id=" + prepay_id + "&signType=MD5&timeStamp=" + timeSpanStr;
postStr += "&key=" + key;
var bs = md5
.ComputeHash(Encoding
.UTF8
.GetBytes(postStr));
var sb = new StringBuilder
();
foreach (byte bb in bs)
{
sb
.Append(bb
.ToString("x2"));
}
var signStr = sb
.ToString
().ToUpper
();
var ret = new payRetModel
()
{
appId = appid,
nonceStr = nonStr,
package = "prepay_id=" + prepay_id,
paySign = signStr,
signType = "MD5",
timeStamp = timeSpanStr
};
return Ok(ret
.GetRetObject
());
}
else
{
CyLogHelp
.WriteLog(retStr + "\r\n" + orderXml, "微信下单失败");
throw new ServiceException("微信下单失败", 201);
}
}
else
{
CyLogHelp
.WriteLog(retStr + "\r\n" + orderXml, "微信下单失败");
throw new ServiceException("微信下单失败", 201);
}
}
/// <summary>
/// 微信支付回调
/// </summary>
/// <returns></returns>
[HttpPost("gspayback")]
public ActionResult<string> PayNotify
()
{
var successStr = "<xml><return_code><![CDATA[SUCCESS]]></return_code><return_msg><![CDATA[OK]]></return_msg></xml>";
var failStr = "<xml><return_code><![CDATA[FAIL]]></return_code><return_msg><![CDATA[参数错误]]></return_msg></xml>";
var postStr = "";
Request
.Body
.Seek(0,SeekOrigin
.Begin);
using (var reader = new StreamReader(Request
.Body, Encoding
.UTF8))
{
postStr = reader
.ReadToEndAsync
().Result;
}
_fsql
.Insert(new wechat_request
()
{
content = postStr
})
.ExecuteAffrows
();
if (!string
.IsNullOrEmpty(postStr))
{
XmlDocument doc = new XmlDocument
();
doc
.XmlResolver = null;
doc
.LoadXml(postStr);
XmlNodeList list = doc
.GetElementsByTagName("xml");
XmlNode xn = list[0];
string ret = xn
.SelectSingleNode("//result_code")
.InnerText;
string attach = xn
.SelectSingleNode("//attach")
.InnerText;
string mch_id = xn
.SelectSingleNode("//mch_id")
.InnerText;
string out_trade_no = xn
.SelectSingleNode("//out_trade_no")
.InnerText;
string transaction_id = xn
.SelectSingleNode("//transaction_id")
.InnerText;
string totalFee = xn
.SelectSingleNode("//total_fee")
.InnerText;
string openid = xn
.SelectSingleNode("//openid")
.InnerText;
decimal price = 0;
if (decimal
.TryParse(totalFee, out price))
{
price = price / 100;
}
if (_fsql
.Select<wechat_pay_log>
().Where(x => x
.transaction_id == transaction_id && x
.result_code == "SUCCESS")
.Count
() > 0)
return Ok(successStr);
//再去判断是否收到订单
var nonStr = CommandHelp
.GetGuid
();
var appid = AppConfigurtaionServices
.Configuration["Wechat:AppId"];
var mymch_id = AppConfigurtaionServices
.Configuration["Wechat:MchId"];
var key = AppConfigurtaionServices
.Configuration["Wechat:Key"];
var postData = "appid=" + appid + "&mch_id=" + mymch_id + "&nonce_str=" + nonStr + "&out_trade_no=" + out_trade_no;
postData += "&key=" + key;
var md5 = MD5
.Create
();
var bs2 = md5
.ComputeHash(Encoding
.UTF8
.GetBytes(postData));
var sb2 = new StringBuilder
();
foreach (byte bb in bs2)
{
sb2
.Append(bb
.ToString("x2"));
}
postData = sb2
.ToString
().ToUpper
();
var orderXml = "<xml>"
+ "<appid>" + appid + "</appid>"
+ "<mch_id>" + mymch_id + "</mch_id>"
+ "<nonce_str>" + nonStr + "</nonce_str>"
+ "<out_trade_no>" + out_trade_no + "</out_trade_no>"
+ "<sign>" + postData + "</sign>"
+ "</xml>";
var retStr = WebRequsetHelp
.PostRequestData("https://api
.mch
.weixin
.qq
.com/pay/orderquery", orderXml, WebRequsetContentType
.Form表单);
if (!retStr
.Contains("支付成功"))
{
CyLogHelp
.WriteLog(retStr + "\r\n" + orderXml, "微信支付回调请求失败");
throw new ServiceException("订单未支付", 201);
};
_fsql
.Transaction(
() =>
{
var order = _fsql
.Select<sys_order>
().Where(e => e
.guid == out_trade_no)
.ToOne
();
//添加支付记录
var _paylog = new wechat_pay_log
()
{
openid = openid,
order_id = order
.order_id,
out_trade_no = out_trade_no,
postStr = postStr,
result_code = ret,
total_fee = Convert
.ToDecimal(totalFee),
transaction_id = transaction_id,
};
if (_fsql
.Insert(_paylog)
.ExecuteAffrows
() <= 0)
throw new ServiceException("添加支付记录失败", 201);
if (_paylog
.result_code == "SUCCESS")
{
//支付逻辑
var domain = new orderDomain(_fsql);
domain
.order_pay(order
.order_id);
}
});
return Ok(successStr);
}
return Ok(failStr);
}
/// <summary>
/// 微信退款回调
/// </summary>
/// <returns></returns>
[HttpPost("refundnotify")]
public ActionResult<string> RefundNotify
()
{
string WechatDecrypt(string decryptStr, string key)
{
byte[] keyArray = Encoding
.UTF8
.GetBytes(key);
byte[] toEncryptArray = Convert
.FromBase64String(decryptStr);
RijndaelManaged rDel = new RijndaelManaged
();
rDel
.Key = keyArray;
rDel
.Mode = CipherMode
.ECB;
rDel
.Padding = PaddingMode
.PKCS7;
ICryptoTransform cTransform = rDel
.CreateDecryptor
();
byte[] resultArray = cTransform
.TransformFinalBlock(toEncryptArray, 0, toEncryptArray
.Length);
return Encoding
.UTF8
.GetString(resultArray);
}
var successStr = "<xml><return_code><![CDATA[SUCCESS]]></return_code><return_msg><![CDATA[OK]]></return_msg></xml>";
var failStr = "<xml><return_code><![CDATA[FAIL]]></return_code><return_msg><![CDATA[参数错误]]></return_msg></xml>";
var postStr = "";
Request
.Body
.Seek(0, SeekOrigin
.Begin);
using (var reader = new StreamReader(Request
.Body, Encoding
.UTF8))
{
postStr = reader
.ReadToEndAsync
().Result;
}
_fsql
.Insert(new wechat_request_refund
()
{
content = postStr
})
.ExecuteAffrows
();
if (string
.IsNullOrEmpty(postStr))
return Ok(failStr);
try
{
XmlDocument doc = new XmlDocument
();
doc
.XmlResolver = null;
doc
.LoadXml(postStr);
XmlNodeList list = doc
.GetElementsByTagName("xml");
XmlNode xn = list[0];
var retcode = xn
.SelectSingleNode("//return_code")
.InnerText;
var req_info = xn
.SelectSingleNode("//req_info")
.InnerText;
if (!string
.IsNullOrEmpty(req_info))
{
//解密
var key = AppConfigurtaionServices
.Configuration["Wechat:Key"];
var md5 = MD5
.Create
();
var bs2 = md5
.ComputeHash(Encoding
.UTF8
.GetBytes(key));
var sb2 = new StringBuilder
();
foreach (byte bb in bs2)
{
sb2
.Append(bb
.ToString("x2"));
}
var temp_key = sb2
.ToString
().ToLower
();
var refund_info = WechatDecrypt(req_info, temp_key);
if (!string
.IsNullOrEmpty(refund_info))
{
doc
.LoadXml(refund_info);
if (doc != null)
{
list = doc
.GetElementsByTagName("root");
xn = list[0];
string transaction_id = xn
.SelectSingleNode("//transaction_id")
.InnerText;
string out_trade_no = xn
.SelectSingleNode("//out_trade_no")
.InnerText;
string refund_id = xn
.SelectSingleNode("//refund_id")
.InnerText;
string out_refund_no = xn
.SelectSingleNode("//out_refund_no")
.InnerText;
string refund_fee = xn
.SelectSingleNode("//refund_fee")
.InnerText;
string refund_status = xn
.SelectSingleNode("//refund_status")
.InnerText;
string totalFee = xn
.SelectSingleNode("//total_fee")
.InnerText;
decimal price = 0;
if (decimal
.TryParse(refund_fee, out price))
{
price = price / 100;
}
if (_fsql
.Select<wechat_refund_log>
().Where(x => x
.refund_id == refund_id && x
.refund_status == "SUCCESS")
.Count
() > 0)
return Ok(successStr);
_fsql
.Transaction(
() =>
{
var _refundlog = new wechat_refund_log
()
{
out_refund_no = out_refund_no,
out_trade_no = out_trade_no,
postStr = postStr,
refund_fee = Convert
.ToDecimal(price),
refund_status = refund_status,
refund_id = refund_id,
transaction_id = transaction_id
};
var _r = _fsql
.Insert(_refundlog)
.ExecuteAffrows
();
if (_r <= 0)
throw new ServiceException("添加退款日志失败", 201);
if (_refundlog
.refund_status == "SUCCESS")
{
var _order = _fsql
.Select<sys_order>
().Where(x => x
.guid == _refundlog
.out_trade_no)
.ToOne
();
if (_order == null)
{
throw new ServiceException("订单不存在", 201);
}
//找到退款记录
var refund_id = Convert
.ToInt32(out_refund_no);
_fsql
.Update<sys_order>(refund_id)
.Set(e => e
.status, (int)DoMain
.Enum
.wechat_refund_status
.已取消)
.ExecuteAffrows
();
}
});
return Ok(successStr);
}
}
}
}
catch { }
return Ok(failStr);
}
}
public class payRetModel
{
public string appId { get; set; }
public string timeStamp { get; set; }
public string nonceStr { get; set; }
public string package { get; set; }
public string signType { get; set; }
public string paySign { get; set; }
}
public class payOrderModel
{
/// <summary>
/// 订单ID/购物车订单id
/// </summary>
[Required]
public int order_id { get; set; } = 0;
/// <summary>
/// 支付金额
/// </summary>
[Required]
public decimal pay { get; set; }
[Required]
public bool from_cart { get; set; }
}
}
我这个为啥状态不修改而且支付也报Object reference not set to
an instance of an object
.（在小程序上支付）怎么解决
本文解析了使用getrequestXML进行DOM操作时的区别，详细说明了getelementsbytagname()用于获取DOM树中特定标签的方法，以及getrequestXM.documentElement获取根节点的特点。
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