我有一个内置 asp.net c# 和一些 jquery 功能的网站。我发现除非我在调试模式下单步执行代码，否则所有功能（例如删除文件）都不起作用。本地主机（iis）上的站点上没有任何功能
我正在使用文件处理程序 (FileTransferHandler.ashx) 来删除、上传文件。正如我上面所说，当我在调试模式下单步执行代码时它有效，但在 localhost（iis）上运行时无效
我现在似乎得到的错误是：405 您正在查找的页面无法显示，因为正在使用无效的方法（HTTP 动词）
这是代码
using System.Collections.Generic;
using System.Configuration;
using System.IO;
using System.Linq;
using System.Web;
using System.Web.Script.Serialization;
using System.Web.SessionState;
public class FileTransferHandler : IHttpHandler, IReadOnlySessionState
{
private readonly JavaScriptSerializer js = new JavaScriptSerializer();
public string StorageRoot
{
get { return ConfigurationManager.AppSettings["StorageRoot"] ; }
}
public bool IsReusable { get { return false; } }
public void ProcessRequest(HttpContext context)
{
context.Response.AddHeader("Pragma", "no-cache");
context.Response.AddHeader("Cache-Control", "private, no-cache");
HandleMethod(context);
}
// Handle request based on method
private void HandleMethod(HttpContext context)
{
switch (context.Request.HttpMethod)
{
case "HEAD":
case "GET":
if (GivenFilename(context)) DeliverFile(context);
else ListCurrentFiles(context);
break;
case "POST":
case "PUT":
UploadFile(context);
break;
case "DELETE":
DeleteFile(context);
break;
case "OPTIONS":
ReturnOptions(context);
break;
default:
context.Response.ClearHeaders();
context.Response.StatusCode = 405;
break;
}
}
private static void ReturnOptions(HttpContext context)
{
context.Response.AddHeader("Allow", "DELETE,GET,HEAD,POST,PUT,OPTIONS");
context.Response.StatusCode = 200;
}
// Delete file from the server
private void DeleteFile(HttpContext context)
{
var filePath = StorageRoot + context.Session["uname"].ToString() + "/" + context.Request["f"];
if (File.Exists(filePath))
{
File.Delete(filePath);
}
}
// Upload file to the server
private void UploadFile(HttpContext context)
{
var statuses = new List<FilesStatus>();
var headers = context.Request.Headers;
if (string.IsNullOrEmpty(headers["X-File-Name"]))
{
UploadWholeFile(context, statuses);
}
else
{
UploadPartialFile(headers["X-File-Name"], context, statuses);
}
WriteJsonIframeSafe(context, statuses);
}
// Upload partial file
private void UploadPartialFile(string fileName, HttpContext context, List<FilesStatus> statuses)
{
if (context.Request.Files.Count != 1) throw new HttpRequestValidationException("Attempt to upload chunked file containing more than one fragment per request");
var inputStream = context.Request.Files[0].InputStream;
var fullName = StorageRoot+ context.Session["uname"].ToString() + "/" + Path.GetFileName(fileName);
using (var fs = new FileStream(fullName, FileMode.Append, FileAccess.Write))
{
var buffer = new byte[1024];
var l = inputStream.Read(buffer, 0, 1024);
while (l > 0)
{
fs.Write(buffer, 0, l);
l = inputStream.Read(buffer, 0, 1024);
}
fs.Flush();
fs.Close();
}
statuses.Add(new FilesStatus(new FileInfo(fullName)));
}
// Upload entire file
private void UploadWholeFile(HttpContext context, List<FilesStatus> statuses)
{
for (int i = 0; i < context.Request.Files.Count; i++)
{
var file = context.Request.Files[i];
file.SaveAs(StorageRoot + context.Session["uname"].ToString()+ "/" + Path.GetFileName(file.FileName));
string fullName = Path.GetFileName(file.FileName);
statuses.Add(new FilesStatus(fullName, file.ContentLength));
}
}
private void WriteJsonIframeSafe(HttpContext context, List<FilesStatus> statuses)
{
context.Response.AddHeader("Vary", "Accept");
try
{
if (context.Request["HTTP_ACCEPT"].Contains("application/json"))
context.Response.ContentType = "application/json";
else
context.Response.ContentType = "text/plain";
}
catch
{
context.Response.ContentType = "text/plain";
}
var jsonObj = js.Serialize(statuses.ToArray());
context.Response.Write(jsonObj);
}
private static bool GivenFilename(HttpContext context)
{
return !string.IsNullOrEmpty(context.Request["f"]);
}
private void DeliverFile(HttpContext context)
{
var filename = context.Request["f"];
var filePath = StorageRoot + context.Session["uname"].ToString() + "/"+ filename;
if (File.Exists(filePath))
{
context.Response.AddHeader("Content-Disposition", "attachment; filename=\"" + filename + "\"");
context.Response.ContentType = "application/octet-stream";
context.Response.ClearContent();
context.Response.WriteFile(filePath);
}
else
context.Response.StatusCode = 404;
}
private void ListCurrentFiles(HttpContext context)
{
var files =
new DirectoryInfo(StorageRoot + "/" + context.Session["uname"].ToString())
.GetFiles("*", SearchOption.TopDirectoryOnly)
.Where(f => !f.Attributes.HasFlag(FileAttributes.Hidden))
.Select(f => new FilesStatus(f))
.ToArray();
string jsonObj = js.Serialize(files);
context.Response.AddHeader("Content-Disposition", "inline; filename=\"files.json\"");
context.Response.Write(jsonObj);
context.Response.ContentType = "application/json";
}
}