Handling submitted form data with different encoding

[Jason Zhou <Ja...@sas.com>]

It seems to me that there is no guarantee the browser will pass the right encoding to the servlet container. 

What I did are:
1.	Specify the content type for the JSP output using <%@ page contentType="text/html; charset=utf-8" %>,  which ensures that the JSP page is treated as UTF-8 able to represent all the characters needed.
2.	Specify the content type to the browser using <meta http-equiv="content-type" content="text/html; charset=utf-8">. Since the browser uses the encoding of the page to send form data, submissions will now use UTF-8.
3.	Set up a filter that unconditionally sets the character encoding to be used in parsing the incoming request to utf-8 specified by the encoding filter initialization parameter in the web app deployment descriptor (/WEB-INF/web.xml). The call made in ther filtering process is request.setCharacterEncoding(encoding).

The above steps should guarantee all form input will be taken in by servlet container in utf-8, regardless of locale. Would you please comment on that?

Best Regards,

J. Jason Zhou
Business Intelligence Platform Division (BIP), R & D, 
SAS Institute, 100 SAS Campus Dr.
Cary, North Carolina 27513-8617
Voice: 919-531-0568(O)
Email: jason.zhou@sas.com



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