aspx接受aspx页面的文件很简单，用HtmlInputFile,就可以了，但是如果接受Html页面post的文件
就不怎么好办了，我仿照asp的方法做法如下，自己测试通过，拿出来给大家共享，可以限制
文件内容，类型，大小，自定义存储位置，在congfig.xml内
html页的内容：（来自FCKeditor）
1<html>
2<head>
3<title>FCKeditor - Uploaders Tests</title>
4<script language="javascript">
5
6function SendFile()
7{
8var sUploaderUrl = cmbUploaderUrl.value ;
9
10if ( sUploaderUrl.length == 0 )
11sUploaderUrl = txtCustomUrl.value ;
12
13if ( sUploaderUrl.length == 0 )
14{
15alert( 'Please provide your custom URL or select a default one' ) ;
16return ;
17}
18
19eURL.innerHTML = sUploaderUrl ;
20txtUrl.value = '' ;
21
22frmUpload.action = sUploaderUrl ;
23frmUpload.submit() ;
24}
25
26function OnUploadCompleted( errorNumber, fileUrl, fileName, customMsg )
27{
28switch ( errorNumber )
29{
30case 0 : // No errors
31txtUrl.value = fileUrl ;
32alert( 'File uploaded with no errors' ) ;
33break ;
34case 1 : // Custom error
35alert( customMsg ) ;
36break ;
37case 10 : // Custom warning
38txtUrl.value = fileUrl ;
39alert( customMsg ) ;
40break ;
41case 201 :
42txtUrl.value = fileUrl ;
43alert( 'A file with the same name is already available. The uploaded file has been renamed to "' + fileName + '"' ) ;
44break ;
45case 202 :
46alert( 'Invalid file' ) ;
47break ;
48case 203 :
49alert( "Security error. You probably don't have enough permissions to upload. Please check your server." ) ;
50break ;
51default :
52alert( 'Error on file upload. Error number: ' + errorNumber ) ;
53break ;
54}
55}
56
57</script>
58</head>
59<body>
60<table border="0" cellpadding="0" cellspacing="0" height="100%" width="100%">
61<tr>
62<td>
63<table border="0" cellpadding="0" cellspacing="0" width="100%">
64<tr>
65<td nowrap="" style="height: 43px">
66Select the "File Uploader" to use:<br/>
67<select id="cmbUploaderUrl" name="Select1">
68<option selected="" value="asp/upload.asp">ASP</option>
69<option value="php/upload.php">PHP</option>
70<option value="Upload.aspx?type=image">aspx</option>
71</select>
72</td>
73<td nowrap="" style="height: 43px"> </td>
74<td style="height: 43px" width="100%">
75Custom Uploader URL:<br/>
76<input disabled="" id="txtCustomUrl" style="WIDTH: 100%; BACKGROUND-COLOR: #dcdcdc" type="text"/>
77</td>
78</tr>
79</table>
80<br/>
81<table border="0" cellpadding="0" cellspacing="0" width="100%">
82<tr>
83<td nowrap="">
84<form action="" enctype="multipart/form-data" id="frmUpload" method="post" target="UploadWindow">
85Upload a new file:<br/>
86<input name="NewFile" type="file"/><br/>
87<input onclick="SendFile();" type="button" value="Send it to the Server"/>
88</form>
89</td>
90<td style="WIDTH: 16px"> </td>
91<td valign="top" width="100%">
92Uploaded File URL:<br/>
93<input id="txtUrl" readonly="" style="WIDTH: 100%" type="text"/>
94</td>
95</tr>
96</table>
97<br/>
98Post URL: <span id="eURL"> </span>
99</td>
100</tr>
101<tr>
102<td height="100%">
103<iframe height="100%" name="UploadWindow" width="100%"></iframe>
104</td>
105</tr>
106</table>
107</body>
108</html>
upload.aspx的内容：
1@ Page Language="C#" AutoEventWireup="true" CodeFile="Upload.aspx.cs" Inherits="Upload"
下面是后台代码：
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.IO;
using System.Text;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Xml;
using System.Collections.Specialized;
public partial class Upload : System.Web.UI.Page
{
public void SendResults(int errorNumber, string fileUrl, string fileName, string customMsg)
{
StringBuilder text = new StringBuilder();
text.Append("
1<script type='\"text/javascript\"'>");
2text.Append("window.parent.OnUploadCompleted(" + errorNumber + ",\"" + fileUrl.Replace("\"", " \\\\\ "") + "\",\"" + fileName.Replace("\"", " \\\\\ "") + "\",\"" + customMsg.Replace("\"", " \\\\\ "") + "\") ;\n");
3text.Append(" </script>
");
Response.Write(text.ToString());
Response.End();
}
public void GetConfig(string type, out string[] allowedExt, out string[] denyedExt,out string savePath,out long maxSize)
{
XmlDocument doc = new XmlDocument();
doc.Load(Server.MapPath(@".\Config.xml"));
XmlElement root=doc.DocumentElement;
XmlNodeList imageNodelist=root.GetElementsByTagName(type);
allowedExt = imageNodelist[0].FirstChild.InnerText.Trim().Split('|');
denyedExt = imageNodelist[0].LastChild.InnerText.Trim().Split('|');
savePath = root.GetElementsByTagName("userPath").Item(0).InnerText.Trim();
try
{
maxSize = Convert.ToInt64(root.GetElementsByTagName("maxSize").Item(0).InnerText.Trim());
}
catch { maxSize = 10*1024; }
}
protected void Page_Load(object sender, EventArgs e)
{
string[] allowedExt = new string[] { }, denyedExt = new string[] { };
string savePath = String.Empty;
long maxSize = 10000;
string type = Request.QueryString["Type"];
if(type!=null&&type!=string.Empty)
type=type.ToLower();
else
type="file";
if (type == "image")
{
GetConfig("image", out allowedExt, out denyedExt, out savePath,out maxSize);
}
if (type == "file")
{
GetConfig("file", out allowedExt, out denyedExt, out savePath, out maxSize);
}
if (type == "flash")
{
GetConfig("flash", out allowedExt, out denyedExt, out savePath, out maxSize);
}
if (savePath == string.Empty||savePath=="")
savePath = "~/UserFiles/";
if(!savePath.EndsWith("/"))savePath+="/";
/*********************************************************************************
byte[] bytes1 = System.Text.Encoding.Default.GetBytes("这是字符串\n\n\n\n");
byte[] bytes2 = new byte[] { 1, 33, 23, 3, 0, 56, 55, 235, 5 };//二进制数
byte[] bytes = new byte[bytes1.Length + bytes2.Length];
//合并二进制流
MemoryStream ms = new MemoryStream(bytes);
ms.Write(bytes1, 0, bytes1.Length);
ms.Write(bytes2, 0, bytes2.Length);
int count = 0, pos = 0;
//开始找四个'\n'
for (int i = 0; i < bytes.Length; i++)
{
if (bytes[i] == (int)'\n')
{
count++;
if (count == 4)
{
pos -= 4;
break;
}
}
}
if (count == 4)
{
//这里，bytes字节数组里从0 到 pos 的位置就是你要的字符串
//从pos + 5 开始到最后，就是你要的二进制
}
**********************************************************************************/
byte[] fileData, formData;
formData = Request.BinaryRead(Request.ContentLength);
string head = String.Empty;
Encoding encoding = Encoding.UTF8;
long pos = 0;
for (long i = 0; i < formData.LongLength; i++)
{
if (formData[i] == (byte)'\r' && formData[i + 1] == (byte)'\n' && formData[i + 2] == (byte)'\r' && formData[i + 3] == (byte)'\n')
{
pos = i;
break;
}
}
if (pos == 0) { Response.End(); return; }
head = encoding.GetString(formData, 0, (int)pos);
fileData = new byte[formData.LongLength - pos - 3];
Array.Copy(formData, pos + 4, fileData, 0, formData.LongLength - pos - 4);
/************************************************************************************************
//传来的表单形式是：
//"-----------------------------7d5fa3820f84\r\nContent-Disposition: form-data; name="NewFile"; filename="F:\\Documents\\4(10995).jpg"\r\nContent-Type: image/pjpeg\r\n\r\n
//后面是文件数据
************************************************************************************************/
head = head.ToLower();
head = head.Remove(0, head.IndexOf("\r\n") + 2);
head = head.Replace(""", "");
string postFileName = string.Empty;
string fileName;//no path
string fileType, fileExt;
postFileName = head.Substring(0, head.IndexOf("\r\n"));//Content-Disposition: form-data; name="NewFile"; filename="F:\\Documents\\4(10995).jpg"
fileType = head.Remove(0, postFileName.Length + 3);//returns:Content-Type: image/pjpeg
postFileName = postFileName.Substring(postFileName.IndexOf("filename=") + "filename=".Length);//C:\path\name
fileName = Path.GetFileName(postFileName);
fileExt = fileName.Substring(fileName.LastIndexOf(".") + 1);
if (fileData.LongLength > maxSize) {
SendResults(2, ResolveUrl(savePath + fileName), fileName, "Too large");
return;
}
bool isallow=false;
foreach(string ext in denyedExt){
if (ext == fileExt) {
isallow = false;
SendResults(202, ResolveUrl(savePath + fileName), fileName, "forrbiden");
return;
}
}
foreach (string ext in allowedExt) {
if (ext == fileExt) { isallow = true; break; }
}
if ( isallow)
{
string tmpPath = Server.MapPath(savePath);
if (!Directory.Exists(tmpPath)) {
try
{
Directory.CreateDirectory(tmpPath);
}
catch { SendResults(200, ResolveUrl(savePath + fileName), fileName, "没有写入权限"); }
}
//Response.BinaryWrite(fileData);
FileStream savefileStream= new FileStream(tmpPath+fileName, FileMode.OpenOrCreate, FileAccess.ReadWrite);
for (long i = 0; i < fileData.LongLength; i++)
{
savefileStream.WriteByte(fileData[i]);
}
savefileStream.Close();
SendResults(0, ResolveUrl(savePath + fileName), fileName, "No errors");
}
}
}
config.xml
1<upload>
2<enabled>true</enabled>
3<userpath></userpath>
4<maxsize>500000</maxsize><!--unit is byte-->
5<file>
6<allow>zip|rar</allow>
7<deny>php|php3|php5|phtml|asp|aspx|ascx|jsp|cfm|cfc|pl|bat|exe|dll|reg|cgi</deny>
8</file>
9<image/>
10<allow>jpg|gif|jpeg|png|bmp</allow>
11<deny></deny>
12<flash>
13<allow>swf|fla</allow>
14<deny></deny>
15</flash>
16</upload>