蚂蚁小窝

// added on 2003-03
// rev on 2004-03-02,03-03, posting related.

package elib;
import javax.naming.*;
import javax.ejb.*;
import java.util.*;

public class ReaderIM
{

  private ReaderSBHome rHome;
  private ReaderSB     rsb;
 
  int    bookid;
  int    readerid;
  int    orderid;
  int    loanid;

  String readername;
  String  orderdate;
  Date loandate;
  Date returned;


  public ReaderIM(){
  try {
        Context ejb = (Context) new
        InitialContext().lookup("java:comp/env/mis");

        rHome = (ReaderSBHome) ejb.lookup("readersb");
        rsb = rHome.create();
    
    } catch (Exception e) {
       System.err.println("can't initialize home interfaces\n" + e);
    }
 }  

  public void setReaderid(int rid){
    this.readerid= rid;
  }                   

  public void setReadername(String n){
   this.readername = n;
  }
 
  public void setBookid(int bid){
    this.bookid= bid;
  }  

  public void setOrderid(int oid){
    this.orderid= oid;
  }  

  public void setLoanid(int lid){
    this.loanid= lid;
  }  

  public void   setOrderdate(String dt){
    this.orderdate=dt;
  }

  public void   setLoandate(Date dt){
    this.loandate=dt;
  }

  public void   setReturned(Date dt){
    this.returned=dt;
  }

    // main method

  // Rev. on  2003-10-14
   public boolean addOrder()
  {
       return  rsb.addOrder(readerid,bookid,orderdate);
   }   

   public boolean removeOrder()
  {
       return  rsb.removeOrder(orderid,readerid,bookid);
   }   
  

}  // end of class

// 以上是JavaBean

// 下面是调用它的jsp 文件： order.jsp

<%@page contentType="text/html;charset=gb2312" %&gt;

<jsp:useBean id="readerIM" class="elib.ReaderIM" scope="session" /&gt;
<jsp:setProperty name="readerIM" property="*"  /&gt;
<% 
  
   if(session.getAttribute("readerid")==null)
   {
   out.println("You did not log in. Please login first.");
   response.sendRedirect("../index.jsp");
   }
%&gt;
<html&gt; 
<head&gt; 
<title&gt;elib </title&gt; 
<jsp:include page="Header.jsp" flush="true"/&gt; 
<jsp:include page="Sidebar.jsp" flush="true"/&gt; 
<% 
  
  Integer rid = (Integer) session.getAttribute("readerid");
  int readerid = rid.intValue();
  java.util.Date m_date = new java.util.Date();
  String  adddate = m_date.toLocaleString();

  readerIM.setReaderid(readerid);
  readerIM.setOrderdate(adddate);

  if(readerIM.addOrder())out.println("预约成功!");
  else out.println("预约失败! 主要原因可能是你预约的数量超出了你的权限.");

%&gt;
 
<%@ include file="Footer.jsp" %&gt;