发布：2023/5/31 11:21:31作者：管理员 来源：本站 浏览次数：658
C#微信退费全过程
//调用退费
public void WeChatRefund(string total_fee，string refund_fee，string transaction_id){
string totalfee= (float.Parse(total_fee) * 100).ToString();//订单总价
string refundfee= (float.Parse(refund_fee) * 100).ToString();//退费金额
string res = RefundRun(transaction_id, "", totalfee, refundfee);//调用退费方法
if (res.Contains("return_msg=OK")){
//退费成功
}
else{
//退费失败
}
}
/***
* 申请退款完整业务流程逻辑
* @param transaction_id 微信订单号（优先使用）
* @param out_trade_no 商户订单号
* @param total_fee 订单总金额
* @param refund_fee 退款金额
* @return 退款结果（xml格式）
*/
public static string RefundRun(string transaction_id, string out_trade_no, string total_fee, string refund_fee)
{
Log.Info("Refund", "Refund is processing...");
WxPayData data = new WxPayData();
if (!string.IsNullOrEmpty(transaction_id))//微信订单号存在的条件下，则已微信订单号为准
{
data.SetValue("transaction_id", transaction_id);
}
else//微信订单号不存在，才根据商户订单号去退款
{
data.SetValue("out_trade_no", out_trade_no);
}
data.SetValue("total_fee", int.Parse(total_fee));//订单总金额
data.SetValue("refund_fee", int.Parse(refund_fee));//退款金额
data.SetValue("out_refund_no", WxPayApi.GenerateOutTradeNo());//随机生成商户退款单号
data.SetValue("op_user_id", MchID);//操作员，默认为商户号
WxPayData result = Refund(data);//提交退款申请给API，接收返回数据
Log.Info("Refund", "Refund process complete, result : " + result.ToXml());
return result.ToPrintStr();
}
/**
*
* 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 WxPayException
* @return 成功时返回接口调用结果，其他抛异常
*/
public static WxPayData Refund(WxPayData inputObj, int timeOut = 6)
{
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 WxPayException("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 WxPayException("退款申请接口中，缺少必填参数out_refund_no！");
}
else if (!inputObj.IsSet("total_fee"))
{
throw new WxPayException("退款申请接口中，缺少必填参数total_fee！");
}
else if (!inputObj.IsSet("refund_fee"))
{
throw new WxPayException("退款申请接口中，缺少必填参数refund_fee！");
}
else if (!inputObj.IsSet("op_user_id"))
{
throw new WxPayException("退款申请接口中，缺少必填参数op_user_id！");
}
inputObj.SetValue("appid",AppID);//公众账号ID
inputObj.SetValue("mch_id", MchID);//商户号
inputObj.SetValue("nonce_str", Guid.NewGuid().ToString().Replace("-", ""));//随机字符串
inputObj.SetValue("sign_type", WxPayData.SIGN_TYPE_MD5);//签名类型
inputObj.SetValue("sign", inputObj.MakeSign());//签名
string xml = inputObj.ToXml();
var start = DateTime.Now;
Log.Debug("WxPayApi", "Refund request : " + xml);
string response = HttpServiceWeChat.Post(xml, url, true, timeOut);//调用HTTP通信接口提交数据到API
Log.Debug("WxPayApi", "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
WxPayData result = new WxPayData();
result.FromXml(response);
ReportCostTime(url, timeCost, result);//测速上报
return result;
}
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.UserAgent = USER_AGENT;
request.Method = "POST";
request.Timeout = timeout * 1000;
//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)
{
X509Certificate2 cert = new X509Certificate2(证书路径,密码);
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;
}
大体的退费代码就是这些，具体没有体现，接下来是退费发布时遇到的问题
1.“路径正确，一直报系统找不到路径问题”
找到对应应用程序池，将其"高级设置"–“进程模型”–“加载用户配置文件” 设置为true
2.“IIS证书发布问题”
首先将下载的证书导入到服务器或本地。点击证书
win+R 输入MMC，打开MMC
添加证书
完成即可。
