rightfilter.java

来自「用户可以登陆注册对房屋信息的增删改查功能」· Java 代码 · 共 39 行

package com.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;
import javax.servlet.http.HttpSession;

public class RightFilter implements Filter{

	public void destroy() {
		// TODO Auto-generated method stub
		
	}

	public void doFilter(ServletRequest arg0, ServletResponse arg1, FilterChain arg2) throws IOException, ServletException {
		HttpServletRequest request=(HttpServletRequest)arg0;
		HttpServletResponse response=(HttpServletResponse)arg1;
		HttpSession session=request.getSession();
		if(session.getAttribute("name")==null){
			response.sendRedirect("index.html");
		}else{
			arg2.doFilter(arg0, arg1);
		}
	}

	public void init(FilterConfig arg0) throws ServletException {
		// TODO Auto-generated method stub
		
	}

}