www.pudn.com > snmp4jmibbrowser.zip > MibFilter.java

package com.av; 
 
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 MibFilter implements Filter{ 
  public MibFilter() { 
  } 
   
  public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException{ 
    HttpServletRequest req = (HttpServletRequest)request; 
    if(req.getSession().getAttribute("user")==null){ 
      ((HttpServletResponse)response).sendRedirect("./../index.jsp"); 
    }else{ 
      chain.doFilter(request, response);     
    } 
  } 
    
  public void destroy(){     
  } 
   
  public void init(FilterConfig fc) throws ServletException{     
  } 
}