httpfilter.java

过滤器适配器：以后写过滤器

package com.tarena.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;

/**
 * 自己写的实现接口Filter的实现类,做父类
 * 以后再写Filter就继承于这个类就可以了
 * @author soft01
 *
 */
public abstract class HttpFilter implements Filter {
	protected FilterConfig config;
	public void destroy() {

	}

	public void doFilter(ServletRequest request, ServletResponse response,
			FilterChain filterChain) throws IOException, ServletException {
		doFilter((HttpServletRequest)request,(HttpServletResponse)response,filterChain);
	}
	
	public abstract void doFilter(HttpServletRequest request, HttpServletResponse response,
			FilterChain filterChain) throws IOException, ServletException;

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

}