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André,
On 3/16/2009 11:53 AM, André Warnier wrote:
> As far as I understand the HTTP specs, something like
> request.setCharacterEncoding() should only be used (with a charset
> different from iso-8859-1) when a request comes in without a charset
> specification (which also indicates a broken client).
This is my interpretation of the spec.
This is my implementation of a fix:
import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterConfig;
import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
/**
* A filter to ensure that a valid character encoding is available to the
* request.<p>
*
* @author Chris Schultz
* @version $Revision: 1.2 $ $Date: 2006-07-14 14:23:43 $
*/
public class EncodingFilter
implements Filter
{
public static final String DEFAULT_ENCODING = "UTF-8";
private String _encoding;
/**
* Called by the servlet container to indicate to a filter that it is
* being put into service.<p>
*
* @param config The Filter configuration.
*/
public void init(FilterConfig config)
{
_encoding = config.getInitParameter("encoding");
if(null == _encoding)
_encoding = DEFAULT_ENCODING;
}
protected String getDefaultEncoding()
{
return _encoding;
}
/**
* Performs the filtering operation provided by this filter.<p>
*
* This filter performs the following:
*
* Sets the character encoding on the request to that specified in the
* init parameters, but only if the request does not already have
* a specified encoding.
*
* @param request The request being made to the server.
* @param response The response object prepared for the client.
* @param chain The chain of filters providing request services.
*/
public void doFilter(ServletRequest request,
ServletResponse response,
FilterChain chain)
throws IOException, ServletException
{
if(null == request.getCharacterEncoding())
request.setCharacterEncoding(this.getDefaultEncoding());
chain.doFilter(request, response);
}
/**
* Called by the servlet container to indicate that a filter is being
* taken out of service.<p>
*/
public void destroy()
{
}
}
- -chris
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