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ÒÔÏÂΪUserFilteµÄ´úÂ룺
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.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import User;
import UserDAO;
import SessionUtils;
public class UserFilter implements Filter
{
        
        String nofilter;
        String nofilterFiles[];
        String sendRedirect;
        public void destroy()
    {
          
            
    }
        public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException
    {
                
                HttpServletRequest request=(HttpServletRequest)req;
                HttpServletResponse response=(HttpServletResponse)res;
     &


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