loginfilter.java

一个简单的用Spring+Hibernate+Struts的亿阳信通系统

package com.chinatelecom.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 LoginFilter implements Filter {

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

	}

	public void doFilter(ServletRequest arg0, ServletResponse arg1,
			FilterChain arg2) throws IOException, ServletException {
		// TODO Auto-generated method stub
		HttpServletRequest req = (HttpServletRequest) arg0;
		HttpServletResponse res = (HttpServletResponse) arg1;

		String path = req.getServletPath();
		// System.out.println(path);

		if (path.equals("/login.do") || path.equals("/jsp/login.jsp")) {
			arg2.doFilter(arg0, arg1);

		} else if (path.endsWith(".jsp")) {
			res.sendRedirect("/chinamobile/jsp/login.jsp");
		} else {
			HttpSession session = req.getSession();
			String islogin = (String) session.getAttribute("isLogin");
			// System.out.println(islogin);
			if (islogin != null && islogin.equals("true")) {
				arg2.doFilter(arg0, arg1);
			} else {
				res.sendRedirect("/chinamobile/jsp/login.jsp");
			}
		}
	}

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

	}

}