在IIS中自定义虚拟路径提供 [英] Custom Virtual Path Provider in IIS
问题描述
什么是实现IIS 7.5中的自定义虚拟路径提供正确的配置？下面code工作正常使用ASP.NET开发服务器从Visual Studio中运行时，但是从IIS中运行时，不会加载图像。
What is the correct configuration to implement a custom virtual path provider in IIS 7.5? The following code works as expected when run from Visual Studio using the ASP.NET Development Server but does not load the image when run from IIS.
.NET 4.0项目文件
<一个href=\"http://public.bay.livefilestore.com/y1pDGijXqRnWv_6fscX_qYh8fUg71kw439VoxCtEEaoutsCJxYDomZ1nbxeCaH87QWMr7UvU9yd5ySEUajks8GuPw/CustomVirtualPathProvider.zip?download&psid=1\"相对=nofollow> CustomVirtualPathProvider.zip - SkyDrive的文件
CustomVirtualPathProvider.zip - SkyDrive file
的Web.config
<?xml version="1.0"?>
<configuration>
<system.web>
<compilation debug="true" targetFramework="4.0" />
</system.web>
<system.webServer>
<modules runAllManagedModulesForAllRequests="true"/>
</system.webServer>
</configuration>
Default.aspx的
<%@ Page Title="Home Page" Language="C#" AutoEventWireup="true" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Virtual Path Provider</title>
</head>
<body>
<img src="Box.png" />
</body>
</html>
的Global.asax
public class Global : System.Web.HttpApplication
{
void Application_Start(object sender, EventArgs e)
{
System.Web.Hosting.HostingEnvironment.RegisterVirtualPathProvider(new WebApplication1.CustomVirtualPathProvider());
}
}
CustomVirtualFile.cs
public class CustomVirtualFile : System.Web.Hosting.VirtualFile
{
private string _VirtualPath;
public CustomVirtualFile(string virtualPath) : base(virtualPath)
{
_VirtualPath = virtualPath.Replace("/", string.Empty);
}
public override Stream Open()
{
string ImageFile =
System.IO.Path.Combine(HttpContext.Current.Request.PhysicalApplicationPath, @"Crazy\Image\Path", _VirtualPath);
return System.IO.File.Open(ImageFile, FileMode.Open, FileAccess.Read);
}
}
CustomVirtualPathProvider.cs
public class CustomVirtualPathProvider : System.Web.Hosting.VirtualPathProvider
{
Collection<string> ImageTypes;
public CustomVirtualPathProvider() : base()
{
ImageTypes = new Collection<string>();
ImageTypes.Add(".PNG");
ImageTypes.Add(".GIF");
}
public override bool FileExists(string virtualPath)
{
if (IsImage(virtualPath))
{
return true;
}
return base.FileExists(virtualPath);
}
public override System.Web.Hosting.VirtualFile GetFile(string virtualPath)
{
if (IsImage(virtualPath))
{
return new CustomVirtualFile(virtualPath);
}
return base.GetFile(virtualPath);
}
private bool IsImage(string file)
{
return ImageTypes.IndexOf(file.ToUpperInvariant().Substring(file.Length - 4, 4)) > -1;
}
}
文件系统
\Crazy\Image\Path\Box.png
IIS配置
默认的站点没有配置更改。
Default site with no configuration changes.
推荐答案
我有同样的问题，但汤姆·克拉克森使我在正确的轨道上，他是绝对正确的，你需要为了使IIS服务内容提供额外的配置通过虚拟路径提供程序。我找到了解决办法这里
I had the same problem but Tom Clarkson led me on the right track, he's absolutely right in that you need additional configuration in order to make IIS serve the content provider by the virtual path provider. I found a solution here
下面是一个例子web.config中，片段，我想会为你工作。
Here is an example web.config-snippet that I think will work for you
<system.web>
<httpHandlers>
<add path="*.png" verb="*" type="System.Web.StaticFileHandler" validate="true" />
<add path="*.gif" verb="*" type="System.Web.StaticFileHandler" validate="true" />
</httpHandlers>
</system.web>
您也可以注册一个通配符的HttpHandler在一个特殊的位置（例如/ MyVirtualFiles），这可能是有用的，如果你的虚拟路径提供服务于许多不同的文件类型。
You could also register a "wildcard httphandler" under a special location (eg "/MyVirtualFiles"), which might be useful if your virtual path provider serves many different file types.
<location path="MyVirtualFiles">
<system.web>
<httpHandlers>
<add path="*" verb="*" type="System.Web.StaticFileHandler" validate="true" />
</httpHandlers>
</system.web>
</location>
这篇关于在IIS中自定义虚拟路径提供的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
