returnbook.java

是Eclipse web开发从入门到精通的源码

package library.book;

import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextField;

import library.hibernate.BookBrowse;
import library.main.HibernateUtil;

import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;

/**
 * 还书类
 * 
 * @author lianhw
 *
 */
public class ReturnBook extends JFrame implements ActionListener {
	 

	JPanel panel1, panel2;

	Container container;

	JLabel returnedBookStudentLabel, returnedBookNameLabel, returnedDateLabel,
			returnedCommentLabel;

	JTextField returnedBookStudentText, returnedDateText, returnedCommentText;

	JButton clearButton, yseButton, cancelButton;

	JComboBox bookNameComboBox = new JComboBox();

	// 书名和BookBrowse类的映射
	private Map bookName2BookBrowse = new HashMap();

	public ReturnBook() {
		super("书籍还入");
		container = getContentPane();
		container.setLayout(new BorderLayout());
		// “还书者姓名”标签
		returnedBookStudentLabel = new JLabel("还书者姓名", JLabel.CENTER);
		// “书名”标签
		returnedBookNameLabel = new JLabel("书名", JLabel.CENTER);
		// “日期”标签
		returnedDateLabel = new JLabel("日期", JLabel.CENTER);
		// “备注”标签
		returnedCommentLabel = new JLabel("备注", JLabel.CENTER);
		// 输入归还者姓名文本框
		returnedBookStudentText = new JTextField(15);
		// 输入归还日期文本框
		returnedDateText = new JTextField(15);
		// 输入备注文本框
		returnedCommentText = new JTextField(15);
		// 取得SessionFactory
		SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
		// 打开session
		Session session = sessionFactory.openSession();
		// 创建一个事务
		Transaction tx = session.beginTransaction();
		// hsql执行语句
		String hql = "from BookBrowse where is_returned='否'";
		// 执行查询
		Query userList = session.createQuery(hql);
		// 将查询结果放置到一个list链表中
		List list = userList.list();

		for (int index = 0; index < list.size(); index++) {
			BookBrowse bb = (BookBrowse) list.get(index);

			bookNameComboBox.addItem(bb.getBookName());
			bookName2BookBrowse.put(bb.getBookName(), bb);

		}
		// 事务提交
		tx.commit();
		// 关闭session
		session.close();
		panel1 = new JPanel();
		panel1.setLayout(new GridLayout(4, 2));
		panel1.add(returnedBookStudentLabel);
		panel1.add(returnedBookStudentText);
		panel1.add(returnedBookNameLabel);
		panel1.add(bookNameComboBox);
		panel1.add(returnedDateLabel);
		panel1.add(returnedDateText);
		panel1.add(returnedCommentLabel);
		panel1.add(returnedCommentText);
		container.add(panel1, BorderLayout.CENTER);
		panel2 = new JPanel();
		panel2.setLayout(new GridLayout(1, 3));
		// “清空”按钮
		clearButton = new JButton("清空");
		// “确定”按钮
		yseButton = new JButton("确定");
		// “取消”按钮
		cancelButton = new JButton("取消");
		// 为“清空”按钮添加事件监听者
		clearButton.addActionListener(this);
		// 为“确定”按钮添加事件监听者
		yseButton.addActionListener(this);
		// 为“取消”按钮添加事件监听者
		cancelButton.addActionListener(this);
		panel2.add(clearButton);
		panel2.add(yseButton);
		panel2.add(cancelButton);
		container.add(panel2, BorderLayout.SOUTH);
	}

	/**
	 * 动作响应方法，将修改后的出借图书信息提交到数据库中
	 * 
	 * @see java.awt.event.ActionListener#actionPerformed(java.awt.event.ActionEvent)
	 */
	public void actionPerformed(ActionEvent action) {
		if (action.getSource() == cancelButton) {
			// 单击“退出”按钮不作任何事情
			this.dispose();
		} else if (action.getSource() == clearButton) {
			// 单击“清空”按钮，清空所有的文本框
			returnedBookStudentText.setText("");
			returnedDateText.setText("");
			returnedCommentText.setText("");

		} else if (action.getSource() == yseButton) {
			// 判断还书者的姓名是否为空
			if (returnedBookStudentText.getText().trim().equals("")) {
				JOptionPane.showMessageDialog(null, "请输入还书者的姓名。。。");
			} else if (bookNameComboBox.getSelectedItem().equals("")) {
				// 判断有没用出借的书
				JOptionPane.showMessageDialog(null, "图书馆没有出借过书！");
			} else {
				// 取得SessionFactory
				SessionFactory sessionFactory = HibernateUtil
						.getSessionFactory();
				// 打开session
				Session session = sessionFactory.openSession();
				// 创建一个事务
				Transaction tx = session.beginTransaction();
				String bookName = bookNameComboBox.getSelectedItem().toString();
				BookBrowse bookBrowse = (BookBrowse) bookName2BookBrowse
						.get(bookName);
				bookBrowse.setIsReturned("是");
				bookBrowse.setCom(returnedCommentText.getText().trim());
				session.saveOrUpdate(bookBrowse);

				JOptionPane.showMessageDialog(null, "还书成功！");
				// 事务提交
				tx.commit();
				// 关闭session
				session.close();

				this.dispose();
			}
		}
	}
}