上传文件到WebService

 ????public void UploadFile() ???????{ ???????????try ???????????{ ???????????????System.Net.WebClient webClient = new System.Net.WebClient(); ???????????????string Url = webServiceUrl + "/WebServiceToAndroid.asmx/UpdateFile"; ???????????????DirectoryInfo dir = new DirectoryInfo(GetXFilePath()); ???????????????FileInfo[] files = dir.GetFiles(); ???????????????if (files != null && files.Any()) ???????????????{ ???????????????????FileInfo fl = files.Where(p => p.Extension.ToLower() != ".log").OrderBy(p => p.CreationTime).FirstOrDefault(); ???????????????????FileStream fs = new FileStream(fl.FullName, FileMode.OpenOrCreate, FileAccess.Read); ???????????????????byte[] bytes = ReadFile(fs); ???????????????????string base64Str = Convert.ToBase64String(bytes).Replace("+", "%2B");//加号不替换掉 转换的时候会出问题 ???????????????????Dictionary<string, string> dic = new Dictionary<string, string>(); ???????????????????dic.Add("base64Str", base64Str); ???????????????????dic.Add("fileName", fl.Name); ???????????????????HttpWebResponse req = HttpUtils.CreatePostHttpResponse(Url, dic, Encoding.Default); ??????????????????????????????????} ???????????} ???????????catch (Exception ex) ???????????{ ???????????????LogUtil.ErrorLog(string.Format("上传XFile文件失败：{0}", ex.Message)); ???????????} ???????}

 public ?class HttpUtils ???{ ???????private static readonly string DefaultUserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; SV1; .NET CLR 1.1.4322; .NET CLR 2.0.50727)"; ???????private static bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors) ???????{ ???????????return true; //总是接受 ????????????} ???????public static HttpWebResponse CreatePostHttpResponse(string url, IDictionary<string, string> parameters, 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"; ???????????request.UserAgent = DefaultUserAgent; ???????????//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++; ???????????????} ???????????????byte[] data = charset.GetBytes(buffer.ToString()); ???????????????using (Stream stream = request.GetRequestStream()) ???????????????{ ???????????????????stream.Write(data, 0, data.Length); ???????????????} ???????????} ???????????return request.GetResponse() as HttpWebResponse; ???????} ???}

 [WebMethod(Description = "上传文件")] ???????[ScriptMethod(UseHttpGet = false)] ???????public string UpdateFile(string base64Str, string fileName) ???????{ ???????????WSResponse result = new WSResponse(); ???????????try ???????????{ ???????????????byte[] arr = Convert.FromBase64String(base64Str); ???????????????System.IO.MemoryStream ms = new System.IO.MemoryStream(arr); ???????????????string filePath = XFileUrl + "/" + fileName; ???????????????Path.ChangeExtension(filePath, DateTime.Now.ToString("yyyyMMDDHHmmss")); ???????????????FileStream fs = new FileStream(filePath, FileMode.Create); ???????????????fs.Close(); ???????????????fs.Dispose(); ???????????????using (StreamWriter sw = new StreamWriter(filePath)) ???????????????{ ???????????????????ms.WriteTo(sw.BaseStream); ???????????????????sw.Flush(); ???????????????} ???????????????ms.Dispose(); ???????????????ms.Close(); ???????????????result.Result = 1; ???????????????result.Message = "上传成功"; ???????????????LogUtils.InfoLog("END:" + fileName); ???????????} ???????????catch (Exception ex) ???????????{ ???????????????LogUtils.InfoLog("Base64String转为文件失败！：" + ex.Message + "-" + ex.StackTrace); ???????????????result.Result = 0; ???????????????result.Message = "上传失败"; ???????????} ???????????string resultMsg = Newtonsoft.Json.JavaScriptConvert.SerializeObject(result); ???????????return resultMsg; ???????}