如何解决asp.net上传问题,只能传2mb大小的文件 如何解决asp.net上传问题,只能传2mb大小的文件 超过了 2mb就传不了,如何解决,谢谢!! 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 web.config中加<httpRuntime executionTimeout="90" maxRequestLength="100000" /><!--10M--> http://blog.donews.com/godwood/archive/2006/01/22/704791.aspx 太慢了,不能web传一个几百mb的文件怎么解决!!因为我是传的200多的文件,都是这么大的 只能用新开一个窗口用再线浏览的方式,但是怎么把文件名和文件相关信息传递过来到textbox中呢! 我想还是开个FTP,.net中调用它。让客户端调用(不给它知道)。多在都可以。。 ASP.NET里面,上传最大的文件,可能在225M以下,再大,如何修改都不行.默认的上传大小是4M.如果需要上传更大的文件,必须采用其他方法.比如FTP,或者是其他组件比如ASPUPLOAD(不知道有没有NET版),还有,以下地址是讨论在NET中超大文件上传的,你可以去看看.下面是一些资料,你可参考一下(上面所述地址也在里面)对于asp.net,默认只允许上传2M文件,增加如下配置,一般可以自定义最大文件大小. <httpRuntime executionTimeout="300" maxRequestLength="40960" useFullyQualifiedRedirectUrl="false"/> 如果还不行,可以使用思归提供的方案: 我们在上传大文件时都遇到过这样或那样的问题。设置很大的maxRequestLength值并不能完全解决问题,因为ASP.NET会block直到把整个文件载入内存后,再加以处理。实际上,如果文件很大的话,我们经常会见到Internet Explorer显示 "The page cannot be displayed - Cannot find server or DNS Error",好像是怎么也catch不了这个错误。为什么?因为这是个client side错误,server side端的Application_Error是处理不到的,可以参考这个帖子研究一下产生这个错误的机理。 handling server error when upload file too large 解决的方法是利用隐含的HttpWorkerRequest,用它的GetPreloadedEntityBody 和 ReadEntityBody方法从IIS为ASP.NET建立的pipe里分块读取数据 IServiceProvider provider = (IServiceProvider) HttpContext.Current; HttpWorkerRequest wr = (HttpWorkerRequest) provider.GetService(typeof(HttpWorkerRequest)); byte[] bs = wr.GetPreloadedEntityBody(); .... if (!wr.IsEntireEntityBodyIsPreloaded()) { int n = 1024; byte[] bs2 = new byte[n]; while (wr.ReadEntityBody(bs2,n) >0) { ..... } } Chris Hynes为我们提供了这样的一个方案(用HttpModule),该方案除了允许你上传大文件外,还能实时显示上传进度: ASP.NET Upload Magic Part 2 这里有他讲座的PPT文件: Uploading with ASP.NET (part 1) Uploading with ASP.NET (part 2) 这次在项目中,用到了大文件上传,要上传的文件有100多m,于是研究现在国内使用的大文件上传的 组件发现用的比较多的有两个控件AspnetUpload 2.0和Lion.Web.UpLoadModule,另外还有思归在它的博客 堂中所说的办法 http://blog.joycode.com/saucer/archive/2004/03/16/16225.aspx 两个控件的方法是:利用隐含的HttpWorkerRequest,用它的GetPreloadedEntityBody 和 ReadEntityBody方法从IIS为ASP.NET建立的pipe里分块读取数据。Chris Hynes为我们提供了这样的一个方案(用HttpModule),该方案除了允许你上传大文件外,还能实时显示上传进度。 Lion.Web.UpLoadModule和AspnetUpload 两个.NET组件都是利用的这个方案。 当上传单文件时,两个软件的方法是一样的,继承HttpModule HttpApplication application1 = sender as HttpApplication; HttpWorkerRequest request1 = (HttpWorkerRequest) ((IServiceProvider) HttpContext.Current).GetService(typeof(HttpWorkerRequest)); try { if (application1.Context.Request.ContentType.IndexOf("multipart/form-data") <= -1) { return; } //Check The HasEntityBody if (!request1.HasEntityBody()) { return; } int num1 = 0; TimeSpan span1 = DateTime.Now.Subtract(this.beginTime); string text1 = application1.Context.Request.ContentType.ToLower(); byte[] buffer1 = Encoding.ASCII.GetBytes(("\r\n--" + text1.Substring(text1.IndexOf("boundary=") + 9)).ToCharArray()); int num2 = Convert.ToInt32(request1.GetKnownRequestHeader(11)); Progress progress1 = new Progress(); application1.Context.Items.Add("FileList", new Hashtable()); byte[] buffer2 = request1.GetPreloadedEntityBody(); num1 += buffer2.Length; string text2 = this.AnalysePreloadedEntityBody(buffer2, "UploadGUID"); if (text2 != string.Empty) { application1.Context.Items.Add("LionSky_UpLoadModule_UploadGUID", text2); } bool flag1 = true; if ((num2 > this.UpLoadFileLength()) && ((0 > span1.TotalHours) || (span1.TotalHours > 3))) { flag1 = false; } if ((0 > span1.TotalHours) || (span1.TotalHours > 3)) { flag1 = false; } string text3 = this.AnalysePreloadedEntityBody(buffer2, "UploadFolder"); ArrayList list1 = new ArrayList(); RequestStream stream1 = new RequestStream(buffer2, buffer1, null, RequestStream.FileStatus.Close, RequestStream.ReadStatus.NoRead, text3, flag1, application1.Context, string.Empty); list1.AddRange(stream1.ReadBody); if (text2 != string.Empty) { progress1.FileLength = num2; progress1.ReceivedLength = num1; progress1.FileName = stream1.OriginalFileName; progress1.FileCount = ((Hashtable) application1.Context.Items["FileList"]).Count; application1.Application["_UploadGUID_" + text2] = progress1; } if (!request1.IsEntireEntityBodyIsPreloaded()) { byte[] buffer4; ArrayList list2; int num3 = 204800; byte[] buffer3 = new byte[num3]; while ((num2 - num1) >= num3) { if (!application1.Context.Response.IsClientConnected) { this.ClearApplication(application1); } num3 = request1.ReadEntityBody(buffer3, buffer3.Length); num1 += num3; list2 = stream1.ContentBody; if (list2.Count > 0) { buffer4 = new byte[list2.Count + buffer3.Length]; list2.CopyTo(buffer4, 0); buffer3.CopyTo(buffer4, list2.Count); stream1 = new RequestStream(buffer4, buffer1, stream1.FileStream, stream1.FStatus, stream1.RStatus, text3, flag1, application1.Context, stream1.OriginalFileName); } else { stream1 = new RequestStream(buffer3, buffer1, stream1.FileStream, stream1.FStatus, stream1.RStatus, text3, flag1, application1.Context, stream1.OriginalFileName); } list1.AddRange(stream1.ReadBody); if (text2 != string.Empty) { progress1.ReceivedLength = num1; progress1.FileName = stream1.OriginalFileName; progress1.FileCount = ((Hashtable) application1.Context.Items["FileList"]).Count; application1.Application["_UploadGUID_" + text2] = progress1; } } buffer3 = new byte[num2 - num1]; if (!application1.Context.Response.IsClientConnected && (stream1.FStatus == RequestStream.FileStatus.Open)) { this.ClearApplication(application1); } num3 = request1.ReadEntityBody(buffer3, buffer3.Length); list2 = stream1.ContentBody; if (list2.Count > 0) { buffer4 = new byte[list2.Count + buffer3.Length]; list2.CopyTo(buffer4, 0); buffer3.CopyTo(buffer4, list2.Count); stream1 = new RequestStream(buffer4, buffer1, stream1.FileStream, stream1.FStatus, stream1.RStatus, text3, flag1, application1.Context, stream1.OriginalFileName); } else { stream1 = new RequestStream(buffer3, buffer1, stream1.FileStream, stream1.FStatus, stream1.RStatus, text3, flag1, application1.Context, stream1.OriginalFileName); } list1.AddRange(stream1.ReadBody); if (text2 != string.Empty) { progress1.ReceivedLength = num1 + buffer3.Length; progress1.FileName = stream1.OriginalFileName; progress1.FileCount = ((Hashtable) application1.Context.Items["FileList"]).Count; if (flag1) { progress1.UploadStatus = Progress.UploadStatusEnum.Uploaded; } else { application1.Application.Remove("_UploadGUID_" + text2); } } } byte[] buffer5 = new byte[list1.Count]; list1.CopyTo(buffer5); this.PopulateRequestData(request1, buffer5); } catch (Exception exception1) { this.ClearApplication(application1); throw exception1; } 而思归所说的方法使用Mime也能上传大文件,在以下地址下载 http://krystalware.com/files/slickupload.zip 不过觉得的思归的方法容易很多 解决windows2003最大只能上载200K的限制。先在服务里关闭iis admin service服务找到windows\system32\inesrv\下的metabase.xml,打开,找到ASPMaxRequestEntityAllowed 把他修改为需要的值,然后重启iis admin service服务1、在web服务扩展 允许 active server pages和在服务器端的包含文件 2、修改各站点的属性 主目录-配置-选项-启用父路径3、使之可以上传大于 200k的文件(修改成您要的大小就可以了,如在后面补两个0,就允许20m了)c:\WINDOWS\system32\inetsrv\MetaBase.xml(企业版的windows2003在第592行,默认为 AspMaxRequestEntityAllowed="204800" 即200K将其加两个0,即改为,现在最大就可以上载20M了。AspMaxRequestEntityAllowed="20480000" 关于窗体间传值 请教!c#程序运行无反应 急急急急急急 关于存储过程的调用 在线等,高手进 关于设置环境变量的权限 本地传送到网上就无法使用了...... pictureBox 问题,图片大小 model.ID = Convert.ToInt64(parms[9].Value); ID 是UniqueIdentifier类型怎么转换 那这段代码在c#中不对是吗? 关于图标的使用问题! 请大家帮我解决一下这个问题 C# 2005来袭<Visual Studio 2005> 咋办?
<httpRuntime executionTimeout="90" maxRequestLength="100000" /><!--10M-->
怎么解决!!
因为我是传的200多的文件,都是这么大的
默认的上传大小是4M.
如果需要上传更大的文件,必须采用其他方法.比如FTP,或者是其他组件比如ASPUPLOAD(不知道有没有NET版),还有,以下地址是讨论在NET中超大文件上传的,你可以去看看.下面是一些资料,你可参考一下(上面所述地址也在里面)对于asp.net,默认只允许上传2M文件,增加如下配置,一般可以自定义最大文件大小.
<httpRuntime
executionTimeout="300"
maxRequestLength="40960"
useFullyQualifiedRedirectUrl="false"/> 如果还不行,可以使用思归提供的方案:
我们在上传大文件时都遇到过这样或那样的问题。设置很大的maxRequestLength值并不能完全解决问题,
因为ASP.NET会block直到把整个文件载入内存后,再加以处理。实际上,如果文件很大的话,
我们经常会见到Internet Explorer显示 "The page cannot be displayed - Cannot find server or DNS Error",
好像是怎么也catch不了这个错误。为什么?因为这是个client side错误,server side端的Application_Error是处理不到的,
可以参考这个帖子研究一下产生这个错误的机理。
handling server error when upload file too large
解决的方法是利用隐含的HttpWorkerRequest,用它的GetPreloadedEntityBody 和 ReadEntityBody方法从IIS为ASP.NET建立的
pipe里分块读取数据 IServiceProvider provider = (IServiceProvider) HttpContext.Current; HttpWorkerRequest wr = (HttpWorkerRequest) provider.GetService(typeof(HttpWorkerRequest));
byte[] bs = wr.GetPreloadedEntityBody();
....
if (!wr.IsEntireEntityBodyIsPreloaded())
{
int n = 1024;
byte[] bs2 = new byte[n];
while (wr.ReadEntityBody(bs2,n) >0)
{
.....
}
}
Chris Hynes为我们提供了这样的一个方案(用HttpModule),该方案除了允许你上传大文件外,还能实时显示上传进度:
ASP.NET Upload Magic Part 2
这里有他讲座的PPT文件:
Uploading with ASP.NET (part 1)
Uploading with ASP.NET (part 2) 这次在项目中,用到了大文件上传,要上传的文件有100多m,于是研究现在国内使用的大文件上传的
组件发现用的比较多的有两个控件AspnetUpload 2.0和Lion.Web.UpLoadModule,另外还有思归在它的博客
堂中所说的办法 http://blog.joycode.com/saucer/archive/2004/03/16/16225.aspx
两个控件的方法是:利用隐含的HttpWorkerRequest,用它的GetPreloadedEntityBody 和 ReadEntityBody方法从IIS为ASP.NET建立的pipe里分块读取数据。Chris Hynes为我们提供了这样的一个方案(用HttpModule),该方案除了允许你上传大文件外,还能实时显示上传进度。
Lion.Web.UpLoadModule和AspnetUpload 两个.NET组件都是利用的这个方案。
当上传单文件时,两个软件的方法是一样的,继承HttpModule
HttpApplication application1 = sender as HttpApplication;
HttpWorkerRequest request1 = (HttpWorkerRequest) ((IServiceProvider) HttpContext.Current).GetService(typeof(HttpWorkerRequest));
try
{
if (application1.Context.Request.ContentType.IndexOf("multipart/form-data") <= -1)
{
return;
}
//Check The HasEntityBody
if (!request1.HasEntityBody())
{
return;
} int num1 = 0;
TimeSpan span1 = DateTime.Now.Subtract(this.beginTime); string text1 = application1.Context.Request.ContentType.ToLower(); byte[] buffer1 = Encoding.ASCII.GetBytes(("\r\n--" + text1.Substring(text1.IndexOf("boundary=") + 9)).ToCharArray());
int num2 = Convert.ToInt32(request1.GetKnownRequestHeader(11));
Progress progress1 = new Progress(); application1.Context.Items.Add("FileList", new Hashtable()); byte[] buffer2 = request1.GetPreloadedEntityBody();
num1 += buffer2.Length; string text2 = this.AnalysePreloadedEntityBody(buffer2, "UploadGUID");
if (text2 != string.Empty)
{
application1.Context.Items.Add("LionSky_UpLoadModule_UploadGUID", text2);
}
bool flag1 = true;
if ((num2 > this.UpLoadFileLength()) && ((0 > span1.TotalHours) || (span1.TotalHours > 3)))
{
flag1 = false;
}
if ((0 > span1.TotalHours) || (span1.TotalHours > 3))
{
flag1 = false;
}
string text3 = this.AnalysePreloadedEntityBody(buffer2, "UploadFolder");
ArrayList list1 = new ArrayList();
RequestStream stream1 = new RequestStream(buffer2, buffer1, null, RequestStream.FileStatus.Close, RequestStream.ReadStatus.NoRead, text3, flag1, application1.Context, string.Empty);
list1.AddRange(stream1.ReadBody);
if (text2 != string.Empty)
{
progress1.FileLength = num2;
progress1.ReceivedLength = num1;
progress1.FileName = stream1.OriginalFileName;
progress1.FileCount = ((Hashtable) application1.Context.Items["FileList"]).Count;
application1.Application["_UploadGUID_" + text2] = progress1;
}
if (!request1.IsEntireEntityBodyIsPreloaded())
{
byte[] buffer4;
ArrayList list2;
int num3 = 204800;
byte[] buffer3 = new byte[num3];
while ((num2 - num1) >= num3)
{
if (!application1.Context.Response.IsClientConnected)
{
this.ClearApplication(application1);
}
num3 = request1.ReadEntityBody(buffer3, buffer3.Length);
num1 += num3;
list2 = stream1.ContentBody;
if (list2.Count > 0)
{
buffer4 = new byte[list2.Count + buffer3.Length];
list2.CopyTo(buffer4, 0);
buffer3.CopyTo(buffer4, list2.Count);
stream1 = new RequestStream(buffer4, buffer1, stream1.FileStream, stream1.FStatus, stream1.RStatus, text3, flag1, application1.Context, stream1.OriginalFileName);
}
else
{
stream1 = new RequestStream(buffer3, buffer1, stream1.FileStream, stream1.FStatus, stream1.RStatus, text3, flag1, application1.Context, stream1.OriginalFileName);
}
list1.AddRange(stream1.ReadBody);
if (text2 != string.Empty)
{
progress1.ReceivedLength = num1;
progress1.FileName = stream1.OriginalFileName;
progress1.FileCount = ((Hashtable) application1.Context.Items["FileList"]).Count;
application1.Application["_UploadGUID_" + text2] = progress1;
}
}
buffer3 = new byte[num2 - num1];
if (!application1.Context.Response.IsClientConnected && (stream1.FStatus == RequestStream.FileStatus.Open))
{
this.ClearApplication(application1);
}
num3 = request1.ReadEntityBody(buffer3, buffer3.Length);
list2 = stream1.ContentBody;
if (list2.Count > 0)
{
buffer4 = new byte[list2.Count + buffer3.Length];
list2.CopyTo(buffer4, 0);
buffer3.CopyTo(buffer4, list2.Count);
stream1 = new RequestStream(buffer4, buffer1, stream1.FileStream, stream1.FStatus, stream1.RStatus, text3, flag1, application1.Context, stream1.OriginalFileName);
}
else
{
stream1 = new RequestStream(buffer3, buffer1, stream1.FileStream, stream1.FStatus, stream1.RStatus, text3, flag1, application1.Context, stream1.OriginalFileName);
}
list1.AddRange(stream1.ReadBody);
if (text2 != string.Empty)
{
progress1.ReceivedLength = num1 + buffer3.Length;
progress1.FileName = stream1.OriginalFileName;
progress1.FileCount = ((Hashtable) application1.Context.Items["FileList"]).Count;
if (flag1)
{
progress1.UploadStatus = Progress.UploadStatusEnum.Uploaded;
}
else
{
application1.Application.Remove("_UploadGUID_" + text2);
}
}
}
byte[] buffer5 = new byte[list1.Count];
list1.CopyTo(buffer5);
this.PopulateRequestData(request1, buffer5);
}
catch (Exception exception1)
{
this.ClearApplication(application1);
throw exception1;
}
而思归所说的方法使用Mime也能上传大文件,在以下地址下载
http://krystalware.com/files/slickupload.zip
不过觉得的思归的方法容易很多
先在服务里关闭iis admin service服务
找到windows\system32\inesrv\下的metabase.xml,
打开,找到ASPMaxRequestEntityAllowed 把他修改为需要的值,
然后重启iis admin service服务
1、在web服务扩展 允许 active server pages和在服务器端的包含文件 2、修改各站点的属性
主目录-配置-选项-启用父路径3、使之可以上传大于 200k的文件(修改成您要的大小就可以了,如在后面补两个0,就允许20m了)
c:\WINDOWS\system32\inetsrv\MetaBase.xml(企业版的windows2003在第592行,默认为 AspMaxRequestEntityAllowed="204800" 即200K
将其加两个0,即改为,现在最大就可以上载20M了。AspMaxRequestEntityAllowed="20480000"