www.pudn.com > exam.rar > CheckAdminFilter.java

package org.mmxbb.exam.business; 
 
import java.io.IOException; 
import javax.servlet.FilterChain; 
import javax.servlet.FilterConfig; 
import javax.servlet.ServletException; 
import javax.servlet.ServletRequest; 
import javax.servlet.ServletResponse; 
import javax.servlet.http.HttpServlet; 
import javax.servlet.http.HttpServletRequest; 
import javax.servlet.http.HttpServletResponse; 
import javax.servlet.http.HttpSession; 
 
 
 
public class CheckAdminFilter 
    extends HttpServlet 
    implements javax.servlet.Filter { 
  private FilterConfig filterConfig; 
  final String LOGIN_PAGE = "../index.jsp"; 
 
   
  public void init(FilterConfig filterConfig) throws ServletException { 
    this.filterConfig = filterConfig; 
  } 
 
  public void setFilterConfig(final FilterConfig filterConfig) { 
    this.filterConfig = filterConfig; 
  } 
 
   
  public void doFilter(ServletRequest request, ServletResponse response, 
                       FilterChain filterChain) { 
    HttpServletRequest hreq = (HttpServletRequest) request; 
    HttpServletResponse hres = (HttpServletResponse) response; 
    HttpSession session = hreq.getSession(); 
   
    try { 
          filterChain.doFilter(request, response); 
        } catch (ServletException ex) { 
          ex.printStackTrace(); 
        } catch (IOException ex) { 
          ex.printStackTrace(); 
        } 
        return; 
 
  } 
 
   
  public void destroy() { 
    this.filterConfig = null; 
  } 
}