bookeditaction.java

struts+ejb开发简单借书系统,用的是mysql数据库.

//Created by MyEclipse Struts
// XSL source (default): platform:/plugin/com.genuitec.eclipse.cross.easystruts.eclipse_3.8.0/xslt/JavaClass.xsl

package de.laliluna.tutorial.library.struts.action;

import java.rmi.RemoteException;

import javax.ejb.CreateException;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

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

import de.laliluna.tutorial.library.session.interfaces.BookSession;
import de.laliluna.tutorial.library.session.interfaces.BookSessionHome;
import de.laliluna.tutorial.library.session.interfaces.UserSession;
import de.laliluna.tutorial.library.session.interfaces.UserSessionHome;
import de.laliluna.tutorial.library.struts.form.BookEditForm;

/** 
 * MyEclipse Struts
 * Creation date: 11-04-2004
 * 
 * XDoclet definition:
 * @struts:action path="/bookEdit" name="bookEditForm" parameter="do" scope="request" validate="true"
 * @struts:action-forward name="/jsp/bookEdit.jsp" path="/jsp/bookEdit.jsp"
 */
public class BookEditAction extends DispatchAction {

	/** 
	 * Method editBook
	 * @param mapping
	 * @param form
	 * @param request
	 * @param response
	 * @return ActionForward
	 */
	public ActionForward editBook(
		ActionMapping mapping,
		ActionForm form,
		HttpServletRequest request,
		HttpServletResponse response) {
		BookEditForm bookEditForm = (BookEditForm) form;
		
		/* lalinuna.de 04.11.2004
		 * get id of the book from request
		 */
		Integer id = Integer.valueOf(request.getParameter("id"));
		
		/* lalinuna.de 16.11.2004
		 * load the session facade and get the book by primary key
		 */
		try {
			InitialContext context = new InitialContext();
			//get the home interface for BookSession with JNDI from the application server
			//holen des Home Interfaces f黵 BookSession mit JNDI vom Appplication Server 
			BookSessionHome bookSessionHome = (BookSessionHome)context.lookup(BookSessionHome.JNDI_NAME);
			BookSession bookSession = bookSessionHome.create();
			//get book by primary key and set it in the form bean
			//bestimme das Buch anhand seines Prim鋜schl黶sels und setzte es im Form Bean
			bookEditForm.setBookView(bookSession.getBookByPrimaryKey(id));
			
		} catch (RemoteException e) {
			e.printStackTrace();
		} catch (NamingException e) {
			e.printStackTrace();
		} catch (CreateException e) {
			e.printStackTrace();
		}
				
		return mapping.findForward("showEdit");
		
	}
	
	/** 
	 * Method borrowBook
	 * @param mapping
	 * @param form
	 * @param request
	 * @param response
	 * @return ActionForward
	 */
	public ActionForward borrowBook(
		ActionMapping mapping,
		ActionForm form,
		HttpServletRequest request,
		HttpServletResponse response) {
		BookEditForm bookEditForm = (BookEditForm) form;
		
		/* lalinuna.de 04.11.2004
		 * get id of the book from request
		 */
		Integer id = Integer.valueOf(request.getParameter("id"));
		
		/* lalinuna.de 16.11.2004
		 * load the session facade for book and user 
		 * get the book information and get all users
		 */
		try {
			InitialContext context = new InitialContext();
			//get the home interface for BookSession with JNDI from the application server
			//holen des Home Interfaces f黵 BookSession mit JNDI vom Appplication Server 
			BookSessionHome bookSessionHome = (BookSessionHome)context.lookup(BookSessionHome.JNDI_NAME);
			BookSession bookSession = (BookSession) bookSessionHome.create();;
			
			//get the home interface for UserSession with JNDI from the application server
			//holen des Home Interfaces f黵 UserSession mit JNDI vom Appplication Server 
			UserSessionHome userSessionHome = (UserSessionHome)context.lookup(UserSessionHome.JNDI_NAME);
			UserSession userSession = userSessionHome.create();
			
			//get book by primary key and set it in the form bean
			//lies das Buch anhand seines Prim鋜schl黶sels und setzte es im Form Bean
			bookEditForm.setBookView(bookSession.getBookByPrimaryKey(id));
			
			//get all users and set them in the request
			//bestimme alle Benutzer und setzte diese im Request
			request.setAttribute("users", userSession.getAllUsers());
			
		} catch (RemoteException e) {
			e.printStackTrace();
		} catch (NamingException e) {
			e.printStackTrace();
		} catch (CreateException e) {
			e.printStackTrace();
		}
	
		return mapping.findForward("showBorrowUser");
	}
	
	/** 
	 * Method returnBook
	 * @param mapping
	 * @param form
	 * @param request
	 * @param response
	 * @return ActionForward
	 */
	public ActionForward returnBook(
		ActionMapping mapping,
		ActionForm form,
		HttpServletRequest request,
		HttpServletResponse response) {
		BookEditForm bookEditForm = (BookEditForm) form;
		
		/* lalinuna.de 04.11.2004
		 * get id of the book from request
		 */
		Integer id = Integer.valueOf(request.getParameter("id"));
		
		/* lalinuna.de 16.11.2004
		 * load the session facade and delete the book by primary key
		 */
		try {
			InitialContext context = new InitialContext();
			//get the home interface for BookSession with JNDI from the application server
			//holen des Home Interfaces f黵 BookSession mit JNDI vom Appplication Server 
			BookSessionHome bookSessionHome = (BookSessionHome)context.lookup(BookSessionHome.JNDI_NAME);
			BookSession bookSession = (BookSession) bookSessionHome.create();
			
			//delete the relation between user and book
			//l鰏cht die Beziehung zwischen Benutzer und Buch
			bookSession.returnBook(id);
			
			
		} catch (RemoteException e) {
			e.printStackTrace();
		} catch (NamingException e) {
			e.printStackTrace();
		} catch (CreateException e) {
			e.printStackTrace();
		}
		
		return mapping.findForward("showList");
	}
	
	/** 
	 * Method deleteBook
	 * @param mapping
	 * @param form
	 * @param request
	 * @param response
	 * @return ActionForward
	 */
	public ActionForward deleteBook(
		ActionMapping mapping,
		ActionForm form,
		HttpServletRequest request,
		HttpServletResponse response) {
		BookEditForm bookEditForm = (BookEditForm) form;
		
		/* lalinuna.de 04.11.2004
		 * get id of the book from request
		 */
		Integer id = Integer.valueOf(request.getParameter("id"));
		
		/* lalinuna.de 16.11.2004
		 * load the session facade and delete the book by primary key
		 */
		try {
			InitialContext context = new InitialContext();
			//get the home interface for BookSession with JNDI from the application server
			//holen des Home Interfaces f黵 BookSession mit JNDI vom Appplication Server 
			BookSessionHome bookSessionHome = (BookSessionHome)context.lookup(BookSessionHome.JNDI_NAME);
			BookSession bookSession = (BookSession) bookSessionHome.create();
			
			//remove the book by primary key
			//l鰏cht eine Buch anhand des Prim鋜schl黶sels
			bookSession.removeBookByPrimaryKey(id);
			
			
		} catch (RemoteException e) {
			e.printStackTrace();
		} catch (NamingException e) {
			e.printStackTrace();
		} catch (CreateException e) {
			e.printStackTrace();
		}
		
		return mapping.findForward("showList");
	}
	
	
	
	/** 
	 * Method addBook
	 * @param mapping
	 * @param form
	 * @param request
	 * @param response
	 * @return ActionForward
	 */
	public ActionForward addBook(
		ActionMapping mapping,
		ActionForm form,
		HttpServletRequest request,
		HttpServletResponse response) {
		BookEditForm bookEditForm = (BookEditForm) form;
		
		return mapping.findForward("showAdd");
		
	}
	
	/** 
	 * Method saveBook
	 * @param mapping
	 * @param form
	 * @param request
	 * @param response
	 * @return ActionForward
	 */
	public ActionForward saveBorrow(
		ActionMapping mapping,
		ActionForm form,
		HttpServletRequest request,
		HttpServletResponse response) {
		BookEditForm bookEditForm = (BookEditForm) form;
		
		/* lalinuna.de 16.11.2004
		 * load the session facade and save the book by primary key
		 */
		try {
			InitialContext context = new InitialContext();
			//get the home interface for BookSession with JNDI from the application server
			//holen des Home Interfaces f黵 BookSession mit JNDI vom Appplication Server 
			BookSessionHome bookSessionHome = (BookSessionHome)context.lookup(BookSessionHome.JNDI_NAME);
			BookSession bookSession = (BookSession) bookSessionHome.create();
			
			//borrow a book to a user
			//ein Buch an einen Benutzer verleihen
			bookSession.borrowBook(bookEditForm.getId(), bookEditForm.getUserId());					
			
		} catch (RemoteException e) {
			e.printStackTrace();
		} catch (NamingException e) {
			e.printStackTrace();
		} catch (CreateException e) {
			e.printStackTrace();
		}
		
		return mapping.findForward("showList");
	}
	
	/** 
	 * Method saveBook
	 * @param mapping
	 * @param form
	 * @param request
	 * @param response
	 * @return ActionForward
	 */
	public ActionForward saveBook(
		ActionMapping mapping,
		ActionForm form,
		HttpServletRequest request,
		HttpServletResponse response) {
		BookEditForm bookEditForm = (BookEditForm) form;
		
		
		/* lalinuna.de 16.11.2004
		 * load the session facade and save the book by primary key
		 */
		try {
			InitialContext context = new InitialContext();
			//get the home interface for BookSession with JNDI from the application server
			//holen des Home Interfaces f黵 BookSession mit JNDI vom Appplication Server 
			BookSessionHome bookSessionHome = (BookSessionHome)context.lookup(BookSessionHome.JNDI_NAME);
			BookSession bookSession = (BookSession) bookSessionHome.create();
			
			//save the book value objekt
			//speichern des Book Value Ojekts
			bookSession.saveBook(bookEditForm.getBookValue());
			
			
		} catch (RemoteException e) {
			e.printStackTrace();
		} catch (NamingException e) {
			e.printStackTrace();
		} catch (CreateException e) {
			e.printStackTrace();
		}
		
		return mapping.findForward("showList");
	}

}