代码分析package view;
import model.Book;
import model.BookDAO;
import javax.swing.*;
import javax.swing.table.DefaultTableModel;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.List;
import static model.BookDAO.updateBook;
public class BookView extends JFrame {
private BookDAO bookDAO;
private JTable bookTable;
private DefaultTableModel tableModel;
public BookView() {
bookDAO = new BookDAO();
initializeUI();
}
private void initializeUI() {
setTitle("图书管理系统");
setSize(800, 600);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setLocationRelativeTo(null);
// 创建按钮面板
JPanel buttonPanel = new JPanel();
JButton addButton = new JButton("添加书籍");
JButton viewButton = new JButton("查看所有书籍");
JButton updateButton = new JButton("更新书籍");
JButton deleteButton = new JButton("删除书籍");
addButton.setBackground(new Color(17, 248, 160));
viewButton.setBackground(new Color(17, 248, 160));
updateButton.setBackground(new Color(17, 248, 160));
deleteButton.setBackground(new Color(17, 248, 160));
buttonPanel.add(addButton);
buttonPanel.add(viewButton);
buttonPanel.add(updateButton);
buttonPanel.add(deleteButton);
buttonPanel.setLayout(new GridLayout(2, 2, 1, 10));
// 创建表格
bookTable = new JTable();
tableModel = new DefaultTableModel(new Object[]{"ID", "书名", "作者", "余量", "出版社"}, 0);
bookTable.setModel(tableModel);
bookTable.setRowHeight(40);
bookTable.setBackground(Color.cyan);
JScrollPane scrollPane = new JScrollPane(bookTable);
// 添加组件到主面板
setLayout(new BorderLayout());
add(buttonPanel, BorderLayout.SOUTH);
add(scrollPane, BorderLayout.CENTER);
// 添加按钮事件监听器
addButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
addBook();
}
});
viewButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
viewAllBook();
}
});
updateButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
updateBook();
}
});
deleteButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
deleteBook();
}
});
setVisible(true);
}
private void addBook() {
JTextField idField = new JTextField();
JTextField nameField = new JTextField();
JTextField authorField = new JTextField();
JTextField numField = new JTextField();
JTextField pressField = new JTextField();
Object[] message = {
"ID:", idField,
"书名:", nameField,
"作者:", authorField,
"余量:", numField,
"出版社:", pressField
};
int option = JOptionPane.showConfirmDialog(this, message, "添加书籍", JOptionPane.OK_CANCEL_OPTION);
if (option == JOptionPane.OK_OPTION) {
int id = Integer.parseInt(idField.getText());
String name = nameField.getText();
String author = authorField.getText();
int num = Integer.parseInt(numField.getText());
String press = pressField.getText();
Book book = new Book(id, name, author, num, press);
bookDAO.addBook(book);
JOptionPane.showMessageDialog(this, "书籍已添加: " + book);
viewAllBook(); // 更新表格数据
}
}
private void viewAllBook() {
List<Book> books = bookDAO.getAllBook();
tableModel.setRowCount(0); // 清空表格
for (Book book : books) {
tableModel.addRow(new Object[]{book.getBookId(), book.getBookName(), book.getBookAuthor(), book.getBookNum(), book.getBookPress()});
}
}
private void updateBook() {
int selectedRow = bookTable.getSelectedRow();
if (selectedRow == -1) {
JOptionPane.showMessageDialog(this, "请选择要更新的书籍。");
return;
}
int currentId = (int) tableModel.getValueAt(selectedRow, 0);
JTextField idField = new JTextField(String.valueOf(currentId));
JTextField nameField = new JTextField((String) tableModel.getValueAt(selectedRow, 1));
JTextField authorField = new JTextField(String.valueOf(tableModel.getValueAt(selectedRow, 2)));
JTextField numField = new JTextField(String.valueOf(tableModel.getValueAt(selectedRow, 3)));
JTextField pressField = new JTextField(String.valueOf(tableModel.getValueAt(selectedRow, 4)));
Object[] message = {
"ID:", idField,
"书名:", nameField,
"作者:", authorField,
"余量", numField,
"出版社", pressField
};
int option = JOptionPane.showConfirmDialog(this, message, "更新书籍", JOptionPane.OK_CANCEL_OPTION);
if (option == JOptionPane.OK_OPTION) {
int id = Integer.parseInt(idField.getText());
String name = nameField.getText();
String author = nameField.getText();
int num = Integer.parseInt(idField.getText());
String press = nameField.getText();
Book book = bookDAO.getBookById(currentId);
if (book != null) {
book.setBookId(id);
book.setBookName(name);
book.setBookAuthor(author);
book.setBookNum(num);
book.setBookPress(press);
bookDAO.updateBook(book);
JOptionPane.showMessageDialog(this, "书籍信息已更新: " + book);
viewAllBook(); // 更新表格数据
} else {
JOptionPane.showMessageDialog(this, "书籍ID不存在。");
}
}
}
private void deleteBook() {
int selectedRow = bookTable.getSelectedRow();
if (selectedRow == -1) {
JOptionPane.showMessageDialog(this, "请选择要删除的书籍。");
return;
}
int id = (int) tableModel.getValueAt(selectedRow, 0);
bookDAO.deleteBook(id);
JOptionPane.showMessageDialog(this, "书籍已删除，ID: " + id);
viewAllBook(); // 更新表格数据
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
new BookView();
}
});
}
}
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