95 lines
3.7 KiB
C#
95 lines
3.7 KiB
C#
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Web;
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using System.IO;
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using WeiSha.Common;
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using Song.ServiceInterfaces;
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namespace Song.Site.Utility
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{
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/// <summary>
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/// 考试时，简答题附件上传
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/// </summary>
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public class ExamFileUp : IHttpHandler
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{
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public void ProcessRequest(HttpContext context)
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{
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//学员id，考试id
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int stid = WeiSha.Common.Request.QueryString["stid"].Int32 ?? 0;
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int examid = WeiSha.Common.Request.QueryString["examid"].Int32 ?? 0;
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int qid = WeiSha.Common.Request.QueryString["qid"].Int32 ?? 0;
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HttpFileCollection files = context.Request.Files;//这里只能用<input type="file" />才能有效果,因为服务器控件是HttpInputFile类型
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string msg = string.Empty;
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string error = string.Empty;
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string filename;
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if (files.Count > 0 && stid > 0)
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{
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filename = System.IO.Path.GetFileName(files[0].FileName);
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//判断是否是允许的文件类型
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bool isAllow = false; //是否允许
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string ext = string.Empty; //上传的扩展名
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string[] fileallow = WeiSha.Common.App.Get["ExamFileUp"].Split(',');
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if (files[0].FileName.IndexOf('.') > -1)
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ext = files[0].FileName.Substring(files[0].FileName.LastIndexOf('.') + 1).ToLower();
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foreach (string s in fileallow)
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{
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if (string.IsNullOrWhiteSpace(s) || s.Trim() == "") continue;
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if (s.ToLower() == ext)
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{
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isAllow = true;
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break;
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}
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}
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if (!isAllow)
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{
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context.Response.Write(json("上传文件仅限" + string.Join("、", fileallow) + "格式", "上传失败", filename, qid));
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context.Response.End();
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return;
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}
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//文件所在路径
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string filepath = Upload.Get["Exam"].Physics + examid + "\\" + stid + "\\";
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if (!System.IO.Directory.Exists(filepath))
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System.IO.Directory.CreateDirectory(filepath);
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//文件名
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string file = qid + "_" + System.IO.Path.GetFileName(files[0].FileName);
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//上传文件
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foreach (FileInfo f in new DirectoryInfo(filepath).GetFiles())
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{
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if (f.Name.IndexOf("_") > 0)
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{
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string idtm = f.Name.Substring(0, f.Name.IndexOf("_"));
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if (idtm == qid.ToString()) f.Delete();
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}
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}
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files[0].SaveAs(filepath + file);
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msg = " 成功! 文件大小为:" + files[0].ContentLength;
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context.Response.Write(json(error,msg,filename,qid));
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context.Response.End();
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}
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}
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/// <summary>
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/// 返回Json字符串
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/// </summary>
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/// <param name="error"></param>
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/// <param name="msg"></param>
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/// <param name="file"></param>
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/// <param name="qid"></param>
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/// <returns></returns>
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private string json(string error, string msg, string file, int qid)
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{
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string res = "{ error:'" + error + "', msg:'" + msg + "',filename:'" + file + "',qid:'" + qid + "'}";
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return res;
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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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