borrowaction.java

基于java/mysql的图书管理系统,主要使用的技术有java+jsp+tomcat+mysql+eclipse jdk版本1.6.0

//Created by MyEclipse Struts
// XSL source (default): platform:/plugin/com.genuitec.eclipse.cross.easystruts.eclipse_4.1.0/xslt/JavaClass.xsl

package com.zyuntao.struts.action;

import javax.servlet.http.*;

import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionMessage;
import org.apache.struts.action.ActionMessages;

import java.sql.*;

import com.zyuntao.struts.form.BookForm;
import com.zyuntao.struts.form.DelForm;
import com.zyuntao.struts.model.*;

/** 
 * MyEclipse Struts
 * Creation date: 04-04-2006
 * 
 * XDoclet definition:
 * @struts.action path="/Borrow" name="BookForm" input="/user.jsp" scope="request" validate="true"
 * @struts.action-forward name="success" path="/borrowsuccess"
 */
public class BorrowAction extends Action {

	// --------------------------------------------------------- Instance Variables

	// --------------------------------------------------------- Methods

	/** 
	 * Method execute
	 * @param mapping
	 * @param form
	 * @param request
	 * @param response
	 * @return ActionForward
	 */
	public ActionForward execute(
		ActionMapping mapping,
		ActionForm form,
		HttpServletRequest request,
		HttpServletResponse response) throws SQLException{
		HttpSession session=request.getSession();
		if(session.getAttribute("username")!=null){
		    DelForm DelForm=(DelForm)form;
			int bookid=DelForm.getBookid();
	    String username=(String)session.getValue("username");
	    BookManager bm=new BookManager();
	    ActionMessages messages= new ActionMessages();
		if(bm.borrow(bookid,username))
		{
			return mapping.findForward("success");
			}
		else{
		messages.add("inputerror", new ActionMessage("error.input"));
		saveMessages(request, messages);
		return mapping.getInputForward();
		}}
		return mapping.findForward("index");
	}
}