96 lines
3.9 KiB
C#
96 lines
3.9 KiB
C#
using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using System.Web;
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using System.Web.SessionState;
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using Business = SuperMap.RealEstate.Coop.Merchant.Business;
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namespace Coop.Merchant.Handler
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{
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/// <summary>
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/// Filehelper 的摘要说明
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/// </summary>
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public class Filehelper : IHttpHandler
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{
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public void ProcessRequest(HttpContext context)
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{
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string action_type = string.Empty;
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string action_data = string.Empty;
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if(HttpContext.Current.Request.HttpMethod == "GET")
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{
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action_type = HttpContext.Current.Request.QueryString["action_type"];
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action_data = HttpContext.Current.Request.QueryString["action_data"];
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}
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else
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{
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action_type = HttpContext.Current.Request.Form["action_type"];
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action_data = HttpContext.Current.Request.Form["action_data"];
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}
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//文件操作
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action_data = "24".ToEncrypt();
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string RetString = string.Empty;
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SuperMap.RealEstate.ServiceModel.Transaction _Transaction = new SuperMap.RealEstate.ServiceModel.Transaction();
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Business.IMAGE _IMAGE = new Business.IMAGE(_Transaction);
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switch (action_type)
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{
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case "downloadfile":
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#region 下载文件
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_IMAGE.ResetProperty();
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_IMAGE.AddSearchParameter("IMAGE_ID", action_data.ToDecrypt());
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if (_IMAGE.Search())
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{
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string uploadPath = HttpContext.Current.Server.MapPath("~/UploadImageDir/PROINST/") + _IMAGE.IMAGE_CONTENT;
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if (!System.IO.File.Exists(uploadPath))
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{
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context.Response.Write("error:服务器上该文件已被删除或不存在！");
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return;
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}
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context.Response.Clear();
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context.Response.Buffer = true;
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context.Response.Charset = "utf-8";
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context.Response.ContentEncoding = System.Text.Encoding.GetEncoding("utf-8");//设置输出流为简体中文
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context.Response.AddHeader("Content-Disposition", string.Format("attachment; filename=" +
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(!string.IsNullOrEmpty(_IMAGE.IMAGE_TITLE) ? _IMAGE.IMAGE_TITLE : _IMAGE.IMAGE_CONTENT),
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DateTime.Now.ToString("yyyyMMddHHmmssfff")));
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context.Response.AddHeader("Content-length", System.IO.File.ReadAllBytes(uploadPath).Length.ToString());
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//context.Response.BinaryWrite(System.IO.File.ReadAllBytes(uploadPath));
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System.IO.FileInfo lFileInfo = new System.IO.FileInfo(uploadPath);
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context.Response.WriteFile(lFileInfo.FullName);
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context.Response.ContentType = "application/octet-stream";//设置输出文件类型为excel文件。
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context.Response.Flush();
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context.Response.End();
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}
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#endregion
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break;
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case "deletefilebycode":
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_IMAGE.ResetProperty();
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_IMAGE.AddSearchParameter("IMAGE_ID", action_data.ToDecrypt());
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if (_IMAGE.Search())
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{
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_IMAGE.Delete();
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RetString = "1";
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}
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break;
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}
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_Transaction.AutoCommit();
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context.Response.ContentType = "text/plain";
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context.Response.Write(RetString);
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context.Response.End();
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}
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public bool IsReusable
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{
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get
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{
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return false;
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}
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}
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}
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} |