filterright.java

J2EE客户关系管理系统!!!!!!!!!!!!!!!!!!!!

package com.accp;

import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
import com.accp.service.UserService;

public class FilterRight extends HttpServlet implements Filter {
    private FilterConfig filterConfig;
    public void init(FilterConfig filterConfig) throws ServletException {
    	//System.out.println("过滤器初始化...1");
        this.filterConfig = filterConfig;
    }

    public void doFilter(ServletRequest req, ServletResponse resp,
                         FilterChain filterChain) {
        try {
            HttpServletRequest request = (HttpServletRequest) req;
            HttpServletResponse response = (HttpServletResponse) resp;
            HttpSession session = request.getSession();
            //System.out.println("执行身份过滤的验证");
            String page = request.getServletPath();
            System.out.println("你当前访问的页面:" + page);
            if(!"/html/index.jsp".equals(page))//当前访问的不是登录页面
            { 
                //有没有登录过
                if (session.getAttribute("usrIdIndex") == null
				&& session.getAttribute("usrNameIndex") == null) {  // 没有登录
                	response.sendRedirect("/ClientNexus/login.jsp");
				}
            }   
            filterChain.doFilter(req, resp);
        } catch (ServletException sx) {
            filterConfig.getServletContext().log(sx.getMessage());
        } catch (IOException iox) {
            filterConfig.getServletContext().log(iox.getMessage());
        }
    }

    //Clean up resources
    public void destroy(){
    	//System.out.println("过滤器销毁...4");
    }
}