checkrecordeventhandler.java

MVC结构开发简单例子 非常实用的..有学习MVC的可以看看.

package com.mvc.event;

import java.io.IOException;
import java.util.ResourceBundle;
import java.util.HashMap;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import com.mvc.event.baseEvent.EventHandlerBase;
import com.mvc.constant.Constant;
import com.mvc.bean.Charge;

public class CheckRecordEventHandler
  extends EventHandlerBase{
  private ResourceBundle rd = ResourceBundle.getBundle( Constant.URL_PROPERTYFILE );

  protected String getURL(){
    return rd.getString( Constant.CHECKRECORD );
  }

  public void process( HttpServletRequest request, HttpServletResponse response )
    throws IOException,
           ServletException{
    String project = request.getParameter( Constant.PROJECT );

    if( project.equals("") ){
      throw new IOException("project can`t be empty");
    }

    String hours = request.getParameter( Constant.HOURS );

    try{
      Integer.parseInt( hours );
    }catch( NumberFormatException n ){
      throw new IOException("hours must be a Integer");
    }

    HttpSession session = request.getSession();
    HashMap map = ( HashMap )session.getAttribute( Constant.HASHMAPKEY );

    if( map == null ){
      map = new HashMap();
    }

    Charge charge = new Charge();

    charge.setName( ( String )request.getParameter( Constant.NAME ));
    charge.setProject( ( String )request.getParameter( Constant.PROJECT ));
    charge.setHours( ( String )request.getParameter( Constant.HOURS ));

    map.put( charge.getProject(), charge );

    session.setAttribute( Constant.HASHMAPKEY, map );
  }
}