Use ihttpmodule to solve Chinese address garbled characters (1)

Test environment:

Server -- [Local Machine] wiindows2003 Enterprise Edition 2003 sp2 Chinese version, IIS 6.0, ie 7.0, ASP. NET 2.0
Client -- [Local Machine] Same as above, Firefox 2.0.0.12

Author: birdshover

This article is a preliminary discussionArticle. We need to make several assumptions:
1. The website is deployed using ASP. NET;
2. The website code is UTF-8;
3. Modifying page links is costly.

Currently, the main problem is that there are many links in the page, and the parameters directly contain Chinese characters, which is more friendly than the URL after transcoding. However, when user a sends a nice address to friend B, the problem occurs and the parameter will become garbled!

In fact, in the UTF-8 environment, the link on the page on the website can be Chinese, for example:
<A href = "http: // localhost/a. aspx? Key = Chinese "> http: // localhost/a. aspx? Key = Chinese </a>

However, copy "http: // localhost/a. aspx? Key = is Chinese. If you directly enter the address bar, garbled characters are generated.

This article aims to solve the problem when entering Chinese characters in the address bar. This method is simple, but it may conflict with existing links. The method to avoid conflicts is complicated and will be introduced in subsequent articles.

Using. Net httpmodule rewriting can solve the above problems.

Construct an httpmodule as follows:Public ClassHookmodule: ihttpmodule
{

# RegionIhttpmodule Member

Public VoidDispose ()
{

}

Public VoidInit (httpapplication context)
{
Context. beginrequest+ = NewEventhandler (context_beginrequest );
}

Void Context_beginrequest ( Object Sender, eventargs E)
{
Httpapplication = (Httpapplication) sender;
Httpcontext Context = Application. context;
String Rawurl = Context. Request. rawurl;

Context. rewritepath (rawurl );

}

# Endregion
}

After the configuration is complete, enter "http: // localhost/a. aspx?" in the address bar? Key = is Chinese. No gibberish (ie, theworld 2.0) is generated ).

However, when you enter the above address in Firefox, it turns into garbled characters.
That's because Firefox forcibly encodes the address. SetCodeTransformed:

Public   Class Hookmodule: ihttpmodule
{

# RegionIhttpmodule Member

Public VoidDispose ()
{

}

Public VoidInit (httpapplication context)
{
Context. beginrequest+ = NewEventhandler (context_beginrequest );
}

Void Context_beginrequest ( Object Sender, eventargs E)
{
Httpapplication = (Httpapplication) sender;
Httpcontext Context = Application. context;
String Rawurl = Context. Request. rawurl;
Byte [] Bytes = System. Web. httputility. urldecodetobytes (rawurl, encoding. Default );
String S = Encoding. Default. getstring (bytes );
Context. rewritepath (s );

}

# Endregion
}

OK. The problem is solved and the display is normal in all three browsers.

Do not end here because the problem may have occurred.

Click <a href = "http: // localhost/a. aspx? Key = Chinese "> http: // localhost/a. aspx? Key = Chinese </a>
This address turns into garbled characters.

The solution in this article is to encode the address
System. Web. httputility. urlencode ("Chinese", encoding. getencoding ("gb2312 "))
In this way, there is no garbled problem.

Note that the above Code uses encoding. Default because my system is in the Chinese version, the default encoding is gb2312.

The full text is complete.
From: http://www.cnblogs.com/birdshover/