jsp登陆访问跳转

1. 未登陆，禁止访问任何页面，自动跳转到登陆页

package com.catalogeasy.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;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 stubHttpServletRequest httprequest = (HttpServletRequest) arg0;HttpServletResponse httpresponse = (HttpServletResponse) arg1;String temp = httprequest.getServletPath();if(httprequest.getSession().getAttribute("user")==null){if("/jdom.do".equals(temp)||"/login.do".equals(temp)){arg2.doFilter(arg0, arg1);}else{httpresponse.sendRedirect("/CatalogUser");}}else{arg2.doFilter(arg0, arg1);}/*if(httprequest.getSession().getAttribute("user")==null&&((!"/jdom.do".equals(temp))||(!"/login.do".equals(temp)))){httpresponse.sendRedirect("/CatalogUser/user/login.jsp");}else{arg2.doFilter(arg0, arg1);}*/}public void init(FilterConfig arg0) throws ServletException {// TODO Auto-generated method stub}

 

      2.登陆后跳转到请求页面

import java.io.IOException;import java.net.URLEncoder;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 com.ww.golf.bo.Player;import com.ww.golf.util.ActionUtils;public class LogFilter implements Filter { protected FilterConfig filterConfig; public void init(FilterConfig config) throws ServletException { this.filterConfig = config; } public void doFilter(ServletRequest srequest, ServletResponse sresponse, FilterChain chain) throws IOException, ServletException { HttpServletRequest request = (HttpServletRequest) srequest; HttpServletResponse response = (HttpServletResponse) sresponse; Player player = (Player) request.getSession().getAttribute( ActionUtils.PLAYER_OBJ_KEY); if (player == null) { StringBuffer sUrl = new StringBuffer(""); if (request.getRequestURI() != null) { sUrl .append(URLEncoder.encode(request.getRequestURI(), "UTF-8")); } if (request.getQueryString() != null) { sUrl.append("?"); sUrl.append(URLEncoder .encode(request.getQueryString(), "UTF-8")); } System.out.println("URL:" + sUrl); response.sendRedirect("../index.jsp?" + ActionUtils.GO_URI_KEY + "=" + sUrl.toString()); } else { chain.doFilter(request, response); } } public void setFilterConfig(final FilterConfig filterConfig) { this.filterConfig = filterConfig; } public void destroy() { this.filterConfig = null; }}