/**
 * this servlet is the super servlet,to offer common methods to the sub_servlets
 * all the sub_servlets need to implement the abstract method:doExecute().
**/

public abstract class BasicServlet extends HttpServlet
{
  private static final String CONTENT_TYPE = "text/html; charset=Shift_JIS";

  public void init(ServletConfig config) throws ServletException{
    super.init(config);
    ......//do other initialize
  }

  public void doGet(HttpServletRequest req,HttpServletResponse res)
  	throws ServletException, IOException{
    doExecute(request,response);
  }

  public void doPost(HttpServletRequest req, HttpServletResponse res) 
  	throws ServletException, IOException{
    doExecute(request,response);
  }

  public String getContentType(){
    return CONTENT_TYPE;
  }

/**
 * Public abstract Method:need be implement by subclass
**/
  public abstract void doExecute(HttpServletRequest req,HttpServletResponse res) throws ServletException, IOException;
}