精通J2EE--ECLIPSE、STRUTS、HIBERNATE及SPRING整合应用案例代码-ch16

package bookstore; import java.io.FileOutputStream; import java.io.InputStream; import java.io.OutputStream; import java.util.Date; import java.util.List; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; 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 org.apache.struts.upload.FormFile; import org.hibernate.Query; import org.hibernate.Session; import bookstore.database.Bookinfo; import bookstore.database.HibernateUtil; public class SaveBookAction extends Action { public ActionForward execute(ActionMapping mapping, ActionForm srcForm, HttpServletRequest request, HttpServletResponse response) throws Exception { ActionMessages errors = new ActionMessages(); Bookinfo book = new Bookinfo(); EditBookForm form = (EditBookForm) srcForm; Session dbSession = HibernateUtil.currentSession(); if (form.getId().intValue() != 0) { Query query = dbSession .createQuery("from Bookinfo as b where b.id=:id"); query.setInteger("id", form.getId().intValue()); HibernateUtil.beginTransaction(); List result = query.list(); HibernateUtil.commitTransaction(); if (result.size() != 0) { book = (Bookinfo) result.get(0); } } book.setBookName(new String(form.getBookName().getBytes("ISO-8859-1"), "GB2312")); book.setIsbn("111-222-333"); book.setWriter(new String(form.getWriter().getBytes("ISO-8859-1"), "GB2312")); book.setIntro(new String(form.getIntro().getBytes("ISO-8859-1"), "GB2312")); book.setPublisher(new String( form.getPublisher().getBytes("ISO-8859-1"), "GB2312")); book.setPrice(form.getPrice()); book.setRemaining(form.getRemaining()); book.setDate(new Date(System.currentTimeMillis())); FormFile file = form.getPicture(); if (!file.getFileName().equals("")) { // �ж��ļ�)չ���Ƿ���ȷ String[] fileNameSpt = file.getFileName().split("\\."); String ext = fileNameSpt[fileNameSpt.length - 1].toLowerCase(); if (!ext.equals("gif") && !ext.equals("jpg")) { errors.add("wrongPic", new ActionMessage("savebook.wrongFile")); this.saveErrors(request, errors); return mapping.findForward("errorPage"); } // �Ƿ�ָ���˺Ϸ����ļ��� InputStream is = file.getInputStream(); if (is == null) { errors .add("wrongPic", new ActionMessage( "savebook.invalidPic")); this.saveErrors(request, errors); return mapping.findForward("errorPage"); } // �Ե�ǰϵͳʱ���������Ϊ�ļ����Ա������� String fileName = Long.toString(System.currentTimeMillis()) + "." + ext; String serverFile = servlet.getServletContext().getRealPath("/") + "/upload/" + fileName; OutputStream os = new FileOutputStream(serverFile); byte[] buf = new byte[1024]; while (is.available() != 0) { is.read(buf); os.write(buf); } book.setPicture(fileName); } Session session = HibernateUtil.currentSession(); HibernateUtil.beginTransaction(); session.saveOrUpdate(book); HibernateUtil.commitTransaction(); return mapping.findForward("searchBook"); } }