characterencodingfilter.java

利用servlet写的用户注册登陆

package com.tarena.filter;

import java.io.IOException;

import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class CharacterEncodingFilter extends HttpFilter {

	@Override
	public void doFilter(HttpServletRequest request,
			HttpServletResponse response, FilterChain chain)
			throws IOException, ServletException {
		String charset = getInitParameter("charset");
		if (charset == null) {
			charset = "gbk";
		}
		request.setCharacterEncoding(charset);
		chain.doFilter(request, response);
	}

}