adminfilter.java

一个bbs论坛系统

package com.lovo.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;

import com.lovo.po.UserPO;

public class AdminFilter implements Filter {

	public void destroy() {
		
	}

	public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException {
		HttpServletRequest request = (HttpServletRequest)req;
		HttpServletResponse response = (HttpServletResponse)res;
		HttpSession session = request.getSession();
		
		Boolean isLog = (Boolean)session.getAttribute("isLogSuc");
		
		if(isLog == null) {
			session.setAttribute("errorInfo", "请您先登录或者注册");
			response.sendRedirect("../../web/error.jsp");
			return;
		} else {
			UserPO user = (UserPO)session.getAttribute("user");
			if(user.getAdminFlag() == 0) {
				session.setAttribute("errorInfo", "对不起这些页面您不能访问");
				response.sendRedirect("../../web/error.jsp");
				return;
			} else  {
				chain.doFilter(request, response);
			}
		}
	}

	public void init(FilterConfig arg0) throws ServletException {
		
	}

}