authinterceptor.java

Spring simplespring basic,java

package com.fyyk.interceptor;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

/**
 * Created by IntelliJ IDEA.
 * Date: 2007-3-23 9:56:47
 */
public class AuthInterceptor extends HandlerInterceptorAdapter
{
    private String noLoginRedirect;
    private final Log logger = LogFactory.getLog(getClass());

    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception
    {
        try
        {
            HttpSession session = request.getSession();

            if ((session == null) || (session.getAttribute("userCode") == null))
            {
                logger.info("拦截器没有得到用户会话！");
                logger.info(noLoginRedirect);
                request.getRequestDispatcher(noLoginRedirect).forward(request, response);
                return false;
            }
            logger.info("拦截器拦截到用户会话！" + session.getAttribute("userCode"));
            logger.info("通过拦截器处理");
            return true;
        } catch (ServletException e)
        {
            logger.error(e);
            throw new Exception(e);
        }
    }

    public void setNoLoginRedirect(String noLoginRedirect)
    {
        this.noLoginRedirect = noLoginRedirect;
    }
}