lookupbookaction.java

来自「1.DATABASE目录下存放的是网上购书系统的数据库脚本文件以及相应的jdat」· Java 代码 · 共 54 行

package shopping.action;

import org.apache.struts.action.*;
import javax.servlet.http.*;
import shopping.form.InitialBookForm;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.rmi.PortableRemoteObject;

import shopping.form.InitialBookForm;
import bookstoreejb.*;

public class LookupBookAction
    extends Action {
  public ActionForward perform(ActionMapping actionMapping,
                               ActionForm actionForm,
                               HttpServletRequest httpServletRequest,
                               HttpServletResponse httpServletResponse) {
    //String bookname = httpServletRequest.getParameter("lookupbookname");
    InitialBookForm initialBookForm = (InitialBookForm) actionForm;
    String bookName = initialBookForm.getLookupbookname();
    HttpSession session = httpServletRequest.getSession();

    System.out.println("from form book name is:" + bookName);
    try {
      InitialContext initialContext = new InitialContext();
      Object object = initialContext.lookup("facade");
      facadeHome fHome = (facadeHome) PortableRemoteObject.narrow(object,
          facadeHome.class);
      facade facadeInstance = fHome.create();
      bookstoreejb.Book book = (bookstoreejb.Book) facadeInstance.
          getBookByName(bookName);
      initialBookForm.setBookname(book.bookName);
      initialBookForm.setAuthor(book.author);
      initialBookForm.setPrice(String.valueOf(book.price));
      if(actionMapping.getScope().equals("request"))
        httpServletRequest.setAttribute("initialBookForm",initialBookForm);
      else
        session.setAttribute("initialBookForm",initialBookForm);

    }
    catch (javax.naming.NamingException namingException) {
      namingException.printStackTrace();
    }
    catch (java.rmi.RemoteException remoteException) {
      remoteException.printStackTrace();
    }
    catch (javax.ejb.CreateException createException) {
      createException.printStackTrace();
    }

    return (actionMapping.findForward("detail"));
  }
}