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

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

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

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

    if( !project.equals("") ){
      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);
    }
  }
}