WebService上传文件到服务器（转）
using System; using System.Data; using System.Configuration; using System.Linq; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.HtmlControls; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.IO; /// <summary> ///FileHelper 的摘要说明 /// </summary> public class FileHelper { public static string TxtExtensions = "doc,docx,docm,dotx,dotm,txt,xml,rft,htm,html,mht,mhtml,wps,wtf"; public static string XlsExtensions = "xls,xlsm,xlsb,xlsm,csv"; public static string ImageExtensions = "jpg,jpeg,jpe,jfif,png,tif,tiff,gif,bmp,dib"; public static string UpdateExtensions = "zip,rar"; /// <summary> /// 保存文件 /// </summary> /// <param name="fBitys"></param> /// <param name="fileName"></param> /// <param name="eMsg"></param> /// <returns></returns> public static bool SaveFile(byte[] fBitys, string fileName, ref string eMsg) { try { MemoryStream memoryStream = new MemoryStream(fBitys); //1.定义并实例化一个内存流，以存放提交上来的字节数组。 FileStream fileUpload = new FileStream(fileName, FileMode.Create); ///2.定义实际文件对象，保存上载的文件。 memoryStream.WriteTo(fileUpload); ///3.把内存流里的数据写入物理文件 memoryStream.Close(); fileUpload.Close(); fileUpload = null; memoryStream = null; return true; } catch (Exception ex) { eMsg = ex.Message; return false; } } /// <summary> /// 文件类型 /// </summary> public enum FileType { /// <summary> /// 文本文件 /// </summary> Text, /// <summary> /// 图片文件 /// </summary> Image, /// <summary> /// Excel文件 /// </summary> Excel, /// <summary> /// 其他 /// </summary> Other, UpdateFile } public static FileType GetFileType(string fileName) { string ext = Path.GetExtension(fileName); if (TxtExtensions.ToUpper().Contains(ext.ToUpper().Replace(".", "")) == true) { return FileType.Text; } else if (XlsExtensions.ToUpper().Contains(ext.ToUpper().Replace(".", "")) == true) { return FileType.Excel; } else if (ImageExtensions.ToUpper().Contains(ext.ToUpper().Replace(".", "")) == true) { return FileType.Image; } else if (UpdateExtensions.ToUpper().Contains(ext.ToUpper().Replace(".", "")) == true) { return FileType.UpdateFile; } else { return FileType.Other; } } public static System.Collections.Generic.Dictionary<FileType, string> filePathDic = new System.Collections.Generic.Dictionary<FileType, string>(); public static string GetFilePath(FileType fType) { try { if (filePathDic.Keys.Contains(fType) == true) { return filePathDic[fType]; } else { string filePath = ""; switch (fType) { case FileType.Excel: filePath = ConfigurationSettings.AppSettings["ExcelFilePath"]; break; case FileType.Image: filePath = ConfigurationSettings.AppSettings["ImageFilePath"]; break; case FileType.Other: filePath = ConfigurationSettings.AppSettings["OtherFilePath"]; break; case FileType.Text: filePath = ConfigurationSettings.AppSettings["TextFilePath"]; break; case FileType.UpdateFile: filePath = ConfigurationSettings.AppSettings["UpdateFilePath"]; break; } if (string.IsNullOrEmpty(filePath)) { return ""; } else { filePathDic[fType] = filePath; return filePath; } } } catch { return ""; } } } 定义WebService方法 [WebMethod] public string UploadFile(byte[] fBytes, string fileName, ref string eMsg) { try { FileHelper.FileType ft = FileHelper.GetFileType(fileName); string saveName = DateTime.Now.ToString("yyyyMMddHHmmssffffff") + ((int)((new Random()).NextDouble() * 1000000)).ToString() + Path.GetExtension(fileName); string savePath = ""; switch (ft) { case FileHelper.FileType.Excel: savePath = System.Configuration.ConfigurationManager.AppSettings["ExcelFilePath"] + "\\" + saveName; break; case FileHelper.FileType.Image: savePath = System.Configuration.ConfigurationManager.AppSettings["ImageFilePath"] + "\\" + saveName; break; case FileHelper.FileType.Text: savePath = System.Configuration.ConfigurationManager.AppSettings["TextFilePath"] + "\\" + saveName; break; case FileHelper.FileType.UpdateFile: savePath = System.Configuration.ConfigurationManager.AppSettings["UpdateFilePath"] + "\\" + fileName; break; case FileHelper.FileType.Other: savePath = System.Configuration.ConfigurationManager.AppSettings["OtherFilePath"] + "\\" + saveName; break; } MemoryStream memoryStream = new MemoryStream(fBytes); //1.定义并实例化一个内存流，以存放提交上来的字节数组。 FileStream fileUpload = new FileStream(savePath, FileMode.Create); ///2.定义实际文件对象，保存上载的文件。 memoryStream.WriteTo(fileUpload); ///3.把内存流里的数据写入物理文件 memoryStream.Close(); fileUpload.Close(); fileUpload = null; memoryStream = null; //获取IP地址 System.Net.IPHostEntry entry = System.Net.Dns.GetHostEntry(System.Net.Dns.GetHostName()); System.Net.IPAddress[] addrs = entry.AddressList; string ipAddress = ""; if (addrs.Length > 0) { foreach (System.Net.IPAddress ipAddr in addrs) { if (ipAddr.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork) { ipAddress = ipAddr.ToString(); break; } } if (ipAddress == "") ipAddress = addrs[0].ToString(); } if (ft == FileHelper.FileType.UpdateFile) { return string.Format("http://{0}{1}/getUpdateFile.ashx?fn={2}", ipAddress, Server.HtmlEncode(HttpContext.Current.Request.ApplicationPath), fileName); } else { return string.Format("http://{0}{1}/ShowImage.ashx?fn={2}", ipAddress, Server.HtmlEncode(HttpContext.Current.Request.ApplicationPath), saveName); } } catch (Exception ex) { eMsg = ex.Message; return ""; } } 以上方法返回一个服务器路径，其中ShowImage.ashx这个页面用于显示图片，getUpdateFile.ashx这个页面用于下载文件，代码如下： public class ShowImage : IHttpHandler { public static string FilePath = FileHelper.GetFilePath(FileHelper.FileType.Image); public void ProcessRequest(HttpContext context) { string fileName = context.Request.QueryString["fn"]; fileName = FilePath + "\\" + fileName; context.Response.ContentType = "image/JPEG"; try { context.Response.WriteFile(fileName); context.Response.Flush(); } catch (Exception ex) { context.Response.Write(ex.Message); } } public bool IsReusable { get { return false; } } } public class getUpdateFile : IHttpHandler { public void ProcessRequest(HttpContext context) { string fileName = context.Request.QueryString["fn"]; context.Response.ContentType = "application/octet-stream"; //通知浏览器下载文件而不是打开 context.Response.AddHeader("Content-Disposition", "attachment; filename=" + HttpUtility.UrlEncode(fileName, System.Text.Encoding.UTF8)); try { if (!string.IsNullOrEmpty(fileName)) { string filePath = FileHelper.GetFilePath(FileHelper.FileType.UpdateFile) + "\\" + fileName;//路径 //以字符流的形式下载文件 byte[] bytes = null; using (System.IO.FileStream fs = new System.IO.FileStream(filePath, System.IO.FileMode.Open)) { bytes = new byte[(int)fs.Length]; fs.Read(bytes, 0, bytes.Length); fs.Close(); } context.Response.BinaryWrite(bytes); } } catch { } context.Response.Flush(); context.Response.End(); } public bool IsReusable { get { return false; } } } 客户端代码 public static string UpLoadFile(string fileName, ref string eMsg) { //wms:WebService if (wms == null) { wms = new Service(); } byte[] fByte; fByte = File.ReadAllBytes(fileName); return wms.UploadFile(fByte, fileName, ref eMsg); }
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