setcharacterencoding.java

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package 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;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class SetCharacterEncoding implements Filter {
	private FilterConfig config;
	private String encodeStr;
	public void destroy() {
		encodeStr=null;
		config=null;
	}

	public void doFilter(ServletRequest req, ServletResponse res,
			FilterChain chain) throws IOException, ServletException {
		
		req.setCharacterEncoding(encodeStr);
		res.setCharacterEncoding(encodeStr);
		chain.doFilter(req, res);
	}

	public void init(FilterConfig config) throws ServletException {
		this.config=config;
		encodeStr=this.config.getInitParameter("encode");
	}

}