querybookaction.java

一个简单的AJAX图书展示平台

/*
 * Generated by MyEclipse Struts
 * Template path: templates/java/JavaClass.vtl
 */
package com.ascent.struts.action;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.List;
import java.util.Iterator;

import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;

import com.ascent.struts.form.FindBookForm;
import com.ascent.bean.Book;

/** 
 * MyEclipse Struts
 * Creation date: 03-17-2007
 * 
 * XDoclet definition:
 * @struts.action path="/queryBook" name="findBookForm" input="/head.jsp" scope="request" validate="true"
 */
public class QueryBookAction extends BaseAction
{
	/*
	 * Generated Methods
	 */

	/** 
	 * Method execute
	 * @param mapping
	 * @param form
	 * @param request
	 * @param response
	 * @return ActionForward
	 */
	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) 
	{
		int id=0;
		FindBookForm findBookForm = (FindBookForm) form;
		try
		{
		 id=Integer.parseInt(request.getParameter("bookId"));
		}
		catch(Exception ex)
		{
			String name=findBookForm.getBookName();
			if(name.equals(""))
			{
				return mapping.findForward("error");	
			}
			else
			{
				List list=this.getBookService().findByBookName(name);
				if(!list.isEmpty())
				{
		            request.getSession().setAttribute("findBooks", list);
		            return mapping.findForward("show");
				}
				else
				{
					return mapping.findForward("error");
				}
			}
		}
		 System.out.print("查找开始");
		Book book=this.getBookService().findByBookId(id);
		 System.out.print("查找完成");
		if(!book.equals(null))
		{
            request.getSession().setAttribute("bookMessage",book);
           
            return mapping.findForward("showMessage");
		}
		else
		{
			return mapping.findForward("error");
		}		
	}
}