/* 功能说明:微信退款需要有数字证书,而我们公司是做小程序平台的,会帮商家自动退款,所以会要求商家把微信证书上传至我们服务器,以便 微信退款。 使用HttpPostedFile 接受前端上传的文件,再使用 */ #region 证书上传 UploadCertificate /// <summary> /// 证书上传 /// </summary> /// <returns></returns> [HttpPost] public IHttpActionResult UploadCertificate() { //此字段代表商家证书存储的文件夹 string enterpriseId = "test"; OperationResult response = new OperationResult { Code = OperationResultType.IllegalOperation, Message = "不是有效的p12证书文件" }; try { HttpFileCollection filelist = HttpContext.Current.Request.Files; if (filelist != null && filelist.Count > 0) { HttpPostedFile file = filelist[0]; //文件名 string fileName = file.FileName; if (string.IsNullOrWhiteSpace(fileName) || !fileName.Contains(".")) { return Json(response); } var fileNameSplit = fileName.Trim(new[] { ‘"‘ }).Split(‘.‘); //文件后缀名 string fileExName = fileNameSplit[fileNameSplit.Length - 1]; if (!fileExName.Equals("p12")) { return Json(response); } //上传文件至远程服务器 string res = PostResponse($"url",new HttpPostedFile[] { file }); if (!string.IsNullOrWhiteSpace(res)) { return Json(JsonUtility.DeserializeObject<OperationResult>(res)); } } } catch (Exception ex) { LogHelper.Error("UploadCertificate-error", ex); } return Json(response); } #endregion #region 使用WebRequest构建多媒体文件上传远程服务器 PostResponse /// <summary> /// 发起httpPost 请求,可以上传文件 /// </summary> /// <param name="url">请求的地址</param> /// <param name="files">文件</param> /// <returns></returns> public static string PostResponse(string url, HttpPostedFile[] files) { string boundary = "----------------------------" + DateTime.Now.Ticks.ToString("x"); HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url); request.ContentType = "multipart/form-data; boundary=" + boundary; request.Method = "POST"; request.KeepAlive = true; //request.Credentials = CredentialCache.DefaultCredentials; request.Expect = ""; MemoryStream stream = new MemoryStream(); byte[] line = Encoding.ASCII.GetBytes("--" + boundary + "\r\n"); byte[] enterER = Encoding.ASCII.GetBytes("\r\n"); ////提交文件 if (files != null) { string fformat = "Content-Disposition:form-data; name=\"file\";filename=\"{0}\"\r\nContent-Type:{1}\r\n\r\n"; foreach (HttpPostedFile file in files) { //#region HttpPostedFile.InputStream=>byte[] //Stream inputStream = file.InputStream;//new MemoryStream(); //byte[] bytes = new byte[stream.Length]; //#endregion var fileStream = file.InputStream; var buffer = new byte[1024]; int bytesRead; // =0 stream.Write(line, 0, line.Length); //项目分隔符 string s = string.Format(fformat, file.FileName, file.ContentType); byte[] data = Encoding.UTF8.GetBytes(s); stream.Write(data, 0, data.Length); //stream.Write(bytes, 0, bytes.Length);//文件内容 while ((bytesRead = fileStream.Read(buffer, 0, buffer.Length)) != 0) { stream.Write(buffer, 0, bytesRead); } stream.Write(enterER, 0, enterER.Length); //添加\r\n } } byte[] foot_data = Encoding.UTF8.GetBytes("--" + boundary + "--\r\n"); //项目最后的分隔符字符串需要带上-- stream.Write(foot_data, 0, foot_data.Length); request.ContentLength = stream.Length; Stream requestStream = request.GetRequestStream(); //写入请求数据 stream.Position = 0L; stream.CopyTo(requestStream); // stream.Close(); requestStream.Close(); try { #region HttpWebResponse response = null; try { response = (HttpWebResponse)request.GetResponse(); } catch (WebException ex) { response = (HttpWebResponse)ex.Response; } #endregion //HttpWebResponse response = (HttpWebResponse)request.GetResponse(); Stream streamIn = response.GetResponseStream(); StreamReader reader = new StreamReader(streamIn); string result = reader.ReadToEnd(); reader.Close(); streamIn.Close(); response.Close(); return result; } catch (Exception ex) { throw ex; } #endregion
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作者:小小周
来源:CNBLOGS
原文:https://www.cnblogs.com/zlj-rechio/p/9953548.html
版权声明:本文为作者原创文章,转载请附上博文链接!