HttpModule 实现 ASP.Net (*.aspx) 中文简繁体的自动转换,不用修改原有的任何代码,直接部署即可!

用 HttpModule 实现了 ASP.Net (*.aspx) 中文简繁体的自动转换!
思路相当简单!
Global.asax 的 Codebehind 的 Application_BeginRequest 的事件处理函数也应可以实现!
HttpHandler 是不能实现的,因为它是"截流"!

效果不错!可以处理任意 ASP.Net 站点、虚拟目录!不用修改原有的任何代码!
代码如下:

C#代码


StrConvHttpModule.cs /**//* csc.exe /t:library StrConvHttpModule.cs /r:C:\windows\Microsoft.NET\Framework\v1.1.4322\Microsoft.VisualBasic.dll */ namespace zhutou.HttpModules { using System; using System.Web; using System.Collections; using zhutou.IO; public class StrConvHttpModule : IHttpModule { public string ModuleName { get { return "StrConvHttpModule"; } } public void Init(HttpApplication application) { application.BeginRequest += (new EventHandler(this.Application_BeginRequest)); } private void Application_BeginRequest(object sender, EventArgs e) { HttpApplication application = (HttpApplication) sender; HttpContext context = application.Context; context.Response.Filter = new StrConvFilter(context.Response.Filter); } public void Dispose() { } } } namespace zhutou.IO { using System; using System.IO; using System.Web; using System.Text; using System.Globalization; using Microsoft.VisualBasic; public class StrConvFilter : Stream { private Stream _sink; private long _position; public StrConvFilter(Stream sink) { this._sink = sink; } public override bool CanRead { get { return true; } } public override bool CanSeek { get { return true; } } public override bool CanWrite { get { return true; } } public override long Length { get { return 0; } } public override long Position { get { return this._position; } set { this._position = value; } } public override long Seek(long offset, SeekOrigin direction) { return this._sink.Seek(offset, direction); } public override void SetLength(long length) { this._sink.SetLength(length); } public override void Close() { this._sink.Close(); } public override void Flush() { this._sink.Flush(); } public override int Read(byte[] buffer, int offset, int count) { return this._sink.Read(buffer, offset, count); } public override void Write(byte[] buffer, int offset, int count) { if (HttpContext.Current.Response.ContentType == "text/html") { Encoding e = Encoding.GetEncoding(HttpContext.Current.Response.Charset); string s = e.GetString(buffer, offset, count); s = Strings.StrConv(s, VbStrConv.TraditionalChinese, CultureInfo.CurrentCulture.LCID); this._sink.Write(e.GetBytes(s), 0, e.GetByteCount(s)); } else { this._sink.Write(buffer, offset, count); } } } }

StrConvHttpModule.cs
/**//*
csc.exe /t:library StrConvHttpModule.cs /r:C:\windows\Microsoft.NET\Framework\v1.1.4322\Microsoft.VisualBasic.dll
*/
namespace zhutou.HttpModules
{
using System;
using System.Web;
using System.Collections;

using zhutou.IO;

public class StrConvHttpModule : IHttpModule
{
public string ModuleName
{
get
{
return "StrConvHttpModule";
}
}

public void Init(HttpApplication application)
{
application.BeginRequest += (new EventHandler(this.Application_BeginRequest));
}

private void Application_BeginRequest(object sender, EventArgs e)
{
HttpApplication application = (HttpApplication) sender;
HttpContext context = application.Context;
context.Response.Filter = new StrConvFilter(context.Response.Filter);
}

public void Dispose()
{
}
}
}

namespace zhutou.IO
{
using System;
using System.IO;
using System.Web;
using System.Text;
using System.Globalization;

using Microsoft.VisualBasic;

public class StrConvFilter : Stream
{
private Stream _sink;
private long _position;

public StrConvFilter(Stream sink)
{
this._sink = sink;
}

public override bool CanRead
{
get
{
return true;
}
}

public override bool CanSeek
{
get
{
return true;
}
}

public override bool CanWrite
{
get
{
return true;
}
}

public override long Length
{
get
{
return 0;
}
}

public override long Position
{
get
{
return this._position;
}
set
{
this._position = value;
}
}

public override long Seek(long offset, SeekOrigin direction)
{
return this._sink.Seek(offset, direction);
}

public override void SetLength(long length)
{
this._sink.SetLength(length);
}

public override void Close()
{
this._sink.Close();
}

public override void Flush()
{
this._sink.Flush();
}

public override int Read(byte[] buffer, int offset, int count)
{
return this._sink.Read(buffer, offset, count);
}

public override void Write(byte[] buffer, int offset, int count)
{
if (HttpContext.Current.Response.ContentType == "text/html")
{
Encoding e = Encoding.GetEncoding(HttpContext.Current.Response.Charset);
string s = e.GetString(buffer, offset, count);
s = Strings.StrConv(s, VbStrConv.TraditionalChinese, CultureInfo.CurrentCulture.LCID);
this._sink.Write(e.GetBytes(s), 0, e.GetByteCount(s));
}
else
{
this._sink.Write(buffer, offset, count);
}
}
}
}

将 StrConvHttpModule.cs 编译为 StrConvHttpModule.dll:
csc.exe /t:library StrConvHttpModule.cs /r:C:\windows\Microsoft.NET\Framework\v1.1.4322\Microsoft.VisualBasic.dll

以 Microsoft .NET Framework SDK 自带的 QuickStart 教程站点为例 http://localhost/quickstart/ 修改 quickstart 虚拟目录下的 web.config, 在 <system.web>...</system.web> 区域添加如下配置节:

引用
<httpModules>
<add name="StrConvHttpModule" type="zhutou.HttpModules.StrConvHttpModule, StrConvHttpModule" />
</httpModules>

将 StrConvHttpModule.dll 复制到 该虚拟目录的 bin\ 目录下
,以及该虚拟目录下的各级子虚拟目录下的 bin\ 目录下