시소당

log4j: log and servlet

import  javax.servlet.*;
import  javax.servlet.http.*;
import  java.io.PrintWriter;
import  java.io.IOException;
import  org.apache.log4j.*;

public  class  LoggingServlet  extends  HttpServlet  {
        private  static  Logger  logger  =Logger.getLogger(LoggingServlet.class);

        public  void  doPost(HttpServletRequest  req,  HttpServletResponse  res)
                                              throws  IOException,  ServletException
        {
                logger.info("invoked  the  LoggingServlet...");
                PrintWriter  writer  =  res.getWriter();
                writer.println("Check  your  web  server  console...");
                writer.flush();
                writer.close();
        }
}