parameterfilter.java

parameter encoding filter

package filter;

import java.util.Iterator;
import java.util.Map;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletRequestWrapper;

public class ParameterFilter implements Filter { 
	
	private FilterConfig filterConfig; 
	
	public ParameterFilter() { 
	}
	
	public void init(FilterConfig filterConfig) { 
		this.filterConfig = filterConfig;
	} 
	
	public void destroy() { 
		filterConfig = null;
	}
	
	public void doFilter(ServletRequest request, 
						ServletResponse response,
						FilterChain chain) 
		throws java.io.IOException, ServletException 
	{
		
//		chain.doFilter(request, response);
		
		HttpServletRequestWrapper requestWrapper 
			= new ParameterWrapper((HttpServletRequest)request); 
		chain.doFilter(requestWrapper, response);
    } 
 }