charactorencoding.java

struts

package com.wiely.filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

public class CharactorEncoding implements Filter {
    private static String encoding = "GBK";
	@SuppressWarnings("static-access")
	public void destroy() {
		this.encoding=null;

	}

	public void doFilter(ServletRequest request, ServletResponse response,
			FilterChain chain) throws IOException, ServletException {
		 
	            request.setCharacterEncoding(encoding);

	            chain.doFilter(request, response);

	}

	public void init(FilterConfig filterConfig) throws ServletException {	    

        String encodingParam = filterConfig.getInitParameter("encoding");

        if (encodingParam != null && encodingParam.trim().length() != 0) {

            encoding = encodingParam;

        }

	}

}