76 lines
3.1 KiB
C#
76 lines
3.1 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Data;
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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.HighWay.Storage.Business;
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namespace HighWay.WebSite.Handler
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{
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/// <summary>
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/// MainFrame 的摘要说明
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/// </summary>
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public class MainFrame_ajax : IHttpHandler, IRequiresSessionState
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{
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public void ProcessRequest(HttpContext context)
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{
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//文件操作
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string action_type = HttpContext.Current.Request.Form["action_type"];
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string action_data = HttpContext.Current.Request.Form["action_data"];
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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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switch (action_type)
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{
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#region 下载文件
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case "downloadfile":
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Business.ATTACHMENT _ATTACHMENT = new Business.ATTACHMENT();
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_ATTACHMENT.ATTACHMENT_ID_Encrypt = action_data;
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if (_ATTACHMENT.Select())
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{
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string uploadPath = HttpContext.Current.Server.MapPath("~/UploadImageDir/CompactFile/") + "\\" + _ATTACHMENT.ATTACHMENT_NAME;
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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.Buffer = true;
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context.Response.Clear();
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context.Response.ContentType = "application/download";
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string downFile = _ATTACHMENT.ATTACHMENT_NAME;//这里也可以随便取名
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string EncodeFileName = HttpUtility.UrlEncode(downFile, System.Text.Encoding.UTF8);//防止中文出现乱码
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context.Response.AddHeader("Content-Disposition", "attachment;filename=" + EncodeFileName + ";");
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context.Response.BinaryWrite(System.IO.File.ReadAllBytes(uploadPath));//返回文件数据给客户端下载
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_Transaction.AutoCommit();
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context.Response.Flush();
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context.Response.End();
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}
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break;
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#endregion
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case "deletefilebycode":
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Business.ATTACHMENT _ATTACHMENT2 = new Business.ATTACHMENT();
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_ATTACHMENT2.ATTACHMENT_ID_Encrypt = action_data;
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if (_ATTACHMENT2.Select())
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{
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_ATTACHMENT2.Delete();
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RetString = "1";
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}
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break;
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}
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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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}
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