OPMS/03-程式設計階段/TmpWeb/OT.Web/UploadHandler.ashx.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Services;
using System.IO;
using OT.Web.Ap_Code;
using System.Data;

namespace OT.Web
{
    /// <summary>
    /// 文件上傳後臺處理
    /// </summary>
    [WebService(Namespace = "http://tempuri.org/")]
    [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
    public class UploadHandler : IHttpHandler
    {
        public void ProcessRequest(HttpContext context)
        {
            context.Response.ContentType = "text/plain";
            context.Response.Charset = "utf-8";
            try
            {
                string guid = context.Request.QueryString["guid"];
                string folder = context.Request["folder"];
                string FileGuid = context.Request["FileGuid"];
                if (string.IsNullOrEmpty(FileGuid))
                {
                    FileGuid = Guid.NewGuid().ToString();
                }
                string SetCloseImgTypeCode = context.Request["SetCloseImgTypeCode"];
                string CloseImgTypeCode = context.Request["CloseImgTypeCode"];
                if (SetCloseImgTypeCode == CloseImgTypeCode)
                {
                    int intSetImgCount = BasePage.gintUploadCloseImgCount;

                    DataSet dsFiles = new OT.BLL.CommonClass().GetFileListBySourceRelationID(FileGuid);
                    if (dsFiles != null && dsFiles.Tables.Count > 0 && dsFiles.Tables[0].Rows.Count >= intSetImgCount)
                    {
                        //超過上傳張數,則返回不上傳
                        return;
                    }
                }

                //LogTextHelper.Info(folder);
                HttpPostedFile file = context.Request.Files["Filedata"];
                if (file != null)
                {
                    string oldFileName = file.FileName; //原文件名 
                    int size = file.ContentLength;      //附件大小

                    string strTargetRelationID = "";
                    string newFileName = GetNewFileName(oldFileName, out strTargetRelationID);                               //生成新文件名(GUID)
                    #region 上傳到遠程伺服器
                    //FileServerManage fsw = new FileServerManage();
                    //string uploadFilePath = "/" + newFileName;
                    //if (!string.IsNullOrEmpty(folder))
                    //{
                    // uploadFilePath = string.Format("/{0}/{1}", folder, newFileName);
                    //}
                    //bool uploaded = fsw.UploadFile(file.InputStream, "/" + folder + "/" + newFileName); 
                    #endregion
                    #region 本地伺服器上傳
                    //AppConfig config = new AppConfig();
                    string uploadPath = folder;//config.AppConfigGet("uploadFiles");
                    if (string.IsNullOrEmpty(uploadPath))
                    {
                        uploadPath = "uploadFiles";
                    }
                    uploadPath = Path.Combine(HttpContext.Current.Server.MapPath("/"), uploadPath);
                    uploadPath = Path.Combine(uploadPath, DateTime.Now.ToString("yyyy/MM/dd"));
                    if (!Directory.Exists(uploadPath))
                    {
                        Directory.CreateDirectory(uploadPath);
                    }
                    string newFilePath = Path.Combine(uploadPath, newFileName);

                    //LogTextHelper.Info(newFilePath);

                    file.SaveAs(newFilePath);
                    bool uploaded = File.Exists(newFilePath);
                    #endregion
                    if (uploaded)
                    {
                        #region 文件保存成功后，写入附件的数据库记录

                        OT.BLL.OTB_SYS_Attachments o_SYS_Attachments_BLL = new OT.BLL.OTB_SYS_Attachments();
                        OT.Model.OTB_SYS_Attachments o_SYS_Attachments_Model = new OT.Model.OTB_SYS_Attachments();

                        o_SYS_Attachments_Model.TargetRelationID = strTargetRelationID;
                        o_SYS_Attachments_Model.SourceRelationID = FileGuid;
                        o_SYS_Attachments_Model.FileName = oldFileName;
                        o_SYS_Attachments_Model.FilePath = "~/" + folder + "/" + DateTime.Now.ToString("yyyy/MM/dd") + "/" + newFileName;
                        o_SYS_Attachments_Model.SubFileName = System.IO.Path.GetExtension(newFilePath).ToLower();
                        o_SYS_Attachments_Model.FileSize = size;
                        o_SYS_Attachments_Model.FileType = CloseImgTypeCode;    //類別
                        o_SYS_Attachments_Model.Memo = CloseImgTypeCode != SetCloseImgTypeCode ? "" : file.FileName.Replace(o_SYS_Attachments_Model.SubFileName, "");  //備註
                        o_SYS_Attachments_Model.IsProtected = "N";              //同意對內授權
                        o_SYS_Attachments_Model.IsPublic = "N";                 //同意對外授權
                        o_SYS_Attachments_BLL.Add(o_SYS_Attachments_Model);
                        #endregion
                    }
                    context.Response.Write(FileGuid);
                }
                else
                {
                    //LogTextHelper.Error("上傳文件失败");
                }
            }
            catch (Exception ex)
            {
                //LogTextHelper.Error("上傳文件失败", ex);
                throw;
            }
        }
        /// <summary>
        /// 获取新的名称 比如:aa.jpg转化为aa(20090504).jpg
        /// </summary>
        /// <param name="fileName">文件名称[aa.jpg]</param>
        /// <returns>新的文件名称</returns>
        public static string GetNewFileName(string fileName, out string strTargetRelationID)
        {
            strTargetRelationID = Guid.NewGuid().ToString();
            if (string.IsNullOrEmpty(fileName))
                return string.Empty;
            //文件后缀名
            string extenstion = fileName.Substring(fileName.LastIndexOf(".") + 1);
            string newFileName = strTargetRelationID.Replace("-", "") + "." + extenstion;
            return newFileName;
        }
        public bool IsReusable
        {
            get
            {
                return false;
            }
        }
    }
}