characterencodingfilter.java

生成动态树

package com.dao;

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 CharacterEncodingFilter implements Filter {

	private FilterConfig config;
	public void destroy() {
		this.config=null;
	}

	public void doFilter(ServletRequest request, ServletResponse response,
			FilterChain chain) throws IOException, ServletException {
		request.setCharacterEncoding(config.getInitParameter("charset"));
		response.setCharacterEncoding(config.getInitParameter("charset"));
		chain.doFilter(request, response);

	}

	public void init(FilterConfig config) throws ServletException {
		this.config=config;

	}

}