Re: Character encoding for form submissions

[Mariusz Wiktorczyk]

Olny filter can help you.
But remember:
------------ from api ---------
     setCharacterEncoding

public void setCharacterEncoding(java.lang.String env)
                         throws java.io.UnsupportedEncodingException
   Overrides the name of the character encoding used in the body of
   this request. This method must be called prior to reading request
parameters or reading input using getReader().
---------------------------

Here is code:
public void doFilter(ServletRequest request, ServletResponse response,
                        FilterChain chain)
   throws IOException, ServletException {
       // Conditionally select and set the character encoding to be used
       if (request.getCharacterEncoding() == null) {
           if (encoding != null)
               request.setCharacterEncoding(encoding);
       }
       // Pass control on to the next filter
       chain.doFilter(request, response);
   }

public void init(FilterConfig filterConfig) throws ServletException {

   this.filterConfig = filterConfig;
       this.encoding = filterConfig.getInitParameter("encoding");
   }
public void destroy() {

       this.encoding = null;
       this.filterConfig = null;
   }

and web.xml
 <filter>
   <filter-name>Set Character Encoding</filter-name>
   <filter-class>filters.SetCharacterEncodingFilter</filter-class>
   <init-param>
     <param-name>encoding</param-name>
     <param-value>UTF-8</param-value>
   </init-param>
 </filter>
 <filter-mapping>
   <filter-name>Set Character Encoding</filter-name>
   <url-pattern>/*</url-pattern>
 </filter-mapping>
-------------
I had the same problems and this filter has helped me.
Morris Jones wrote:

I've been researching this for a while.

I'm using Tomcat 4.1.18, and struts 1.0.2.

My app is successfully handling Unicode characters -- in all the actions,
stored in the database, displayed on the HTML pages, using charset=UTF-8.
But the only way I can find to get form data into Unicode in my form bean
is by manually transcoding the UTF-8 strings that come in into Unicode.
I'm led to believe that adding a filter to my app that calls
ServletRequest.setCharacterEncoding("UTF-8") will automatically transcode
the form data (from POST) into Unicode.  I can set breakpoints in
the filter and see that setCharacterEncoding() is being called, and
breakpoints in my form to see that the UTF-8 string from the form is
being set untouched.
What's the deal?  Is it really necessary to add conversion code to all of
my form beans?
Cheers,
Mojo
 





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