characterfilter.java

运用JSP/servlet/JavaBean 技术

package com.lovo.myutil;

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;

/**
 * <p>字符集编码过滤器</p>
 * @author fenglu
 *
 */
public class CharacterFilter implements Filter
{
	/** 存字符集编码，默认为utf-8 */
	private String encoding = "utf-8";

	public void destroy(){}

	public void doFilter(ServletRequest request, ServletResponse response,
			FilterChain chain) throws IOException, ServletException
	{
		HttpServletRequest httpRequest = (HttpServletRequest)request;
		HttpServletResponse httpResponse = (HttpServletResponse)response;
		/** 设置字符集编码 */
		httpRequest.setCharacterEncoding(encoding);
		chain.doFilter(httpRequest, httpResponse);
	}

	public void init(FilterConfig filterConfig) throws ServletException
	{
		encoding = filterConfig.getInitParameter("encoding");
	}

}