分享
 
 
 

ASP.NET使aspx页面能接受HTML,asp的页面传送的文件

王朝c#·作者佚名  2006-12-17
窄屏简体版  字體: |||超大  

ASP.NET使aspx页面能接受HTML,asp的页面传送的文件

ASP.NET使aspx页面能接受HTML,asp的页面传送的文件 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)

<html>

<head>

<title>FCKeditor - Uploaders Tests</title>

<script language='javascript'>

function SendFile()

{

var sUploaderUrl = cmbUploaderUrl.value ;

if ( sUploaderUrl.length == 0 )

sUploaderUrl = txtCustomUrl.value ;

if ( sUploaderUrl.length == 0 )

{

alert( 'Please provide your custom URL or select a default one' ) ;

return ;

}

eURL.innerHTML = sUploaderUrl ;

txtUrl.value = '' ;

frmUpload.action = sUploaderUrl ;

frmUpload.submit() ;

}

function OnUploadCompleted( errorNumber, fileUrl, fileName, customMsg )

{

switch ( errorNumber )

{

case 0 : // No errors

txtUrl.value = fileUrl ;

alert( 'File uploaded with no errors' ) ;

break ;

case 1 : // Custom error

alert( customMsg ) ;

break ;

case 10 : // Custom warning

txtUrl.value = fileUrl ;

alert( customMsg ) ;

break ;

case 201 :

txtUrl.value = fileUrl ;

alert( 'A file with the same name is already available. The uploaded file has been renamed to '' + fileName + ''' ) ;

break ;

case 202 :

alert( 'Invalid file' ) ;

break ;

case 203 :

alert( 'Security error. You probably don't have enough permissions to upload. Please check your server.' ) ;

break ;

default :

alert( 'Error on file upload. Error number: ' + errorNumber ) ;

break ;

}

}

</script>

</head>

<body>

<table cellSpacing='0' cellPadding='0' width='100%' border='0' height='100%'>

<tr>

<td>

<table cellSpacing='0' cellPadding='0' width='100%' border='0'>

<tr>

<td nowrap style='height: 43px'>

Select the 'File Uploader' to use:<br>

<select id='cmbUploaderUrl' name='Select1'>

<option selected value='asp/upload.asp'>ASP</option>

<option value='php/upload.php'>PHP</option>

<option value='Upload.aspx?type=image'>aspx</option>

</select>

</td>

<td nowrap style='height: 43px'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</td>

<td width='100%' style='height: 43px'>

Custom Uploader URL:<BR>

<input id='txtCustomUrl' style='WIDTH: 100%; BACKGROUND-COLOR: #dcdcdc' disabled type='text'>

</td>

</tr>

</table>

<br>

<table cellSpacing='0' cellPadding='0' width='100%' border='0'>

<tr>

<td noWrap>

<form id='frmUpload' target='UploadWindow' enctype='multipart/form-data' action='' method='post'>

Upload a new file:<br>

<input type='file' name='NewFile'><br>

<input type='button' value='Send it to the Server' onclick='SendFile();'>

</form>

</td>

<td style='WIDTH: 16px'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</td>

<td vAlign='top' width='100%'>

Uploaded File URL:<br>

<INPUT id='txtUrl' style='WIDTH: 100%' readonly type='text'>

</td>

</tr>

</table>

<br>

Post URL: <span id='eURL'>&nbsp;</span>

</td>

</tr>

<tr>

<td height='100%'>

<iframe name='UploadWindow' width='100%' height='100%'></iframe>

</td>

</tr>

</table>

</body>

</html>

upload.aspx的内容:

<%@ 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('<script type=\'text/javascript\'>');

text.Append('window.parent.OnUploadCompleted(' + errorNumber + ',\'' + fileUrl.Replace('\'', '\\\'') + '\',\'' + fileName.Replace('\'', '\\\'') + '\',\'' + customMsg.Replace('\'', '\\\'') + '\') ;\n');

text.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

<?xml version='1.0' encoding='utf-8'?>

<upload>

<enabled>true</enabled>

<userPath></userPath>

<maxSize>500000</maxSize><!--unit is byte-->

<file>

<allow>zip|rar</allow>

<deny>php|php3|php5|phtml|asp|aspx|ascx|jsp|cfm|cfc|pl|bat|exe|dll|reg|cgi</deny>

</file>

<image>

<allow>jpg|gif|jpeg|png|bmp</allow>

<deny></deny>

</image>

<flash>

<allow>swf|fla</allow>

<deny></deny>

</flash>

</upload>

 
 
 
免责声明:本文为网络用户发布,其观点仅代表作者个人观点,与本站无关,本站仅提供信息存储服务。文中陈述内容未经本站证实,其真实性、完整性、及时性本站不作任何保证或承诺,请读者仅作参考,并请自行核实相关内容。
2023年上半年GDP全球前十五强
 百态   2023-10-24
美众议院议长启动对拜登的弹劾调查
 百态   2023-09-13
上海、济南、武汉等多地出现不明坠落物
 探索   2023-09-06
印度或要将国名改为“巴拉特”
 百态   2023-09-06
男子为女友送行,买票不登机被捕
 百态   2023-08-20
手机地震预警功能怎么开?
 干货   2023-08-06
女子4年卖2套房花700多万做美容:不但没变美脸,面部还出现变形
 百态   2023-08-04
住户一楼被水淹 还冲来8头猪
 百态   2023-07-31
女子体内爬出大量瓜子状活虫
 百态   2023-07-25
地球连续35年收到神秘规律性信号,网友:不要回答!
 探索   2023-07-21
全球镓价格本周大涨27%
 探索   2023-07-09
钱都流向了那些不缺钱的人,苦都留给了能吃苦的人
 探索   2023-07-02
倩女手游刀客魅者强控制(强混乱强眩晕强睡眠)和对应控制抗性的关系
 百态   2020-08-20
美国5月9日最新疫情:美国确诊人数突破131万
 百态   2020-05-09
荷兰政府宣布将集体辞职
 干货   2020-04-30
倩女幽魂手游师徒任务情义春秋猜成语答案逍遥观:鹏程万里
 干货   2019-11-12
倩女幽魂手游师徒任务情义春秋猜成语答案神机营:射石饮羽
 干货   2019-11-12
倩女幽魂手游师徒任务情义春秋猜成语答案昆仑山:拔刀相助
 干货   2019-11-12
倩女幽魂手游师徒任务情义春秋猜成语答案天工阁:鬼斧神工
 干货   2019-11-12
倩女幽魂手游师徒任务情义春秋猜成语答案丝路古道:单枪匹马
 干货   2019-11-12
倩女幽魂手游师徒任务情义春秋猜成语答案镇郊荒野:与虎谋皮
 干货   2019-11-12
倩女幽魂手游师徒任务情义春秋猜成语答案镇郊荒野:李代桃僵
 干货   2019-11-12
倩女幽魂手游师徒任务情义春秋猜成语答案镇郊荒野:指鹿为马
 干货   2019-11-12
倩女幽魂手游师徒任务情义春秋猜成语答案金陵:小鸟依人
 干货   2019-11-12
倩女幽魂手游师徒任务情义春秋猜成语答案金陵:千金买邻
 干货   2019-11-12
 
推荐阅读
 
 
 
>>返回首頁<<
 
靜靜地坐在廢墟上,四周的荒凉一望無際,忽然覺得,淒涼也很美
© 2005- 王朝網路 版權所有