http://m-hewedy.blogspot.com/2010/05/enable-arabic-non-ascii-characters-for.html
Enabling Arabic (Unicode) in Java web applications (JSP apps and Struts apps )
One of the most big problems you can face as a java web developer is how
to make you web application accepts Arabic (non-ISO-8859-1 characters)
characters from the users in the input text boxes.
In JSP/Servlet applications, a small googling can solve the problem, but
with a framework such as Struts, the matter differ somewhat.
If your web application uses the Database ( the most if not all does )
you should insure that the problem is not in the Database itself that cannot
save Arabic characters, you should try hand-entering Arabic words in varchar
and nvarchar fields, if it accepts Arabic characters, then the problem is in
the JSP/Servlet or Struts and you will find the solution here.
1- To Enable Arabic for request parameteres of "POST" method:
For pure JSP/Servlet Applications :
Two steps and every thing well be done.
First: in each JSP page write this tag at the top of the page :
<%@page language="java" contentType="text/html; charset=UTF-8"%>
Second : in each Servlet that works as the controller for you JSPs, write these two statements at the top of your doPost() :
request.setCharacterEncoding("UTF-8");
response.setCharacterEncoding("UTF-8");
That’s all about Enabling Arabic character acceptation in your JSP forms
For Struts Applications:
Also two steps :
First: in each JSP page write this tag at the top of the page :
<%@page language="java" contentType="text/html; charset=UTF-8"%>
Second: write a Filter class the wraps your org.apache.struts.action.ActionServlet class and put these two statements in its doFilter() method
request.setCharacterEncoding("UTF-8");
response.setCharacterEncoding("UTF-8");
example filter :
public class ArabicEncodingFilter implements Filter {
private void doBeforeProcessing(ServletRequest request, ServletResponse response)
throws IOException, ServletException {
request.setCharacterEncoding("UTF-8");
response.setCharacterEncoding("UTF-8");
}
private void doAfterProcessing(ServletRequest
request, ServletResponse response) throws IOException, ServletException {
}
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)throws IOException, ServletException {
doBeforeProcessing(request, response);
Throwable problem = null;
try {
chain.doFilter(request, response);
} catch(Throwable t) {
problem = t;
t.printStackTrace();
}
doAfterProcessing(request, response);
}}}
And then wrap all your Servlets with you Filter by putting this in web.xml :
<filter>
<filter-name>EncodingFilter</filter-name>
<filter-class>ArabicEncodingFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>EncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
2- Enable Arabic for request parameteres of "GET" method:
It depends on your server (tomcat/JBoss, etc), In tomcat 6 do the following:
set the URIEncoding attribute of the /conf/server.xml to UTF-8.
Or you can retrieve the request QueryString as is and URLDecode it using the desired encoding (UTF-8).
You can Wrtie a HttpServletRequestWrapper that wraps your HttpServletRequest's getParameter methods .
see :
http://balusc.blogspot.com/2009/05/unicode-how-to-get-characters-right.htmlhttp://java.sun.com/developer/technicalArticles/Intl/HTTPCharset/
http://www.joelonsoftware.com/articles/Unicode.html
http://java.sun.com/javaee/5/docs/tutorial/doc/bnayb.html
for more, complete solustion, see : http://m-hewedy.blogspot.com/2010/05/enable-arabic-non-ascii-characters-for.html
