servlet init 重写的例子

@Overwrite
public  void  init( )  throws  ServletException {
        // TODO Auto-generated method stub
        ServletConfig config =  this .getServletConfig();
        classname =  this .getInitParameter( "classname" );
        url =  this .getInitParameter( "url" );
        username =  this .getInitParameter( "username" );
        userpassword =  this .getInitParameter( "userpassword" );
        System.out.print(classname+ "  " +url+ "  " +username+ "  " +userpassword);
}