menudialog.java

基于Java的酒店管理系统源码

		final JPanel panel = new JPanel();
		final FlowLayout flowLayout_1 = new FlowLayout();
		panel.setLayout(flowLayout_1);
		final GridBagConstraints gridBagConstraints_14 = new GridBagConstraints();
		gridBagConstraints_14.anchor = GridBagConstraints.EAST;
		gridBagConstraints_14.insets = new Insets(5, 0, 10, 0);
		gridBagConstraints_14.gridwidth = 7;
		gridBagConstraints_14.gridy = 2;
		gridBagConstraints_14.gridx = 0;
		operatePanel.add(panel, gridBagConstraints_14);

		final JButton addButton = new JButton();
		addButton.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				Field[] fields = MenuDialog.class.getDeclaredFields();// 通过Java反射获取MenuDialog类的所有属性
				for (int i = 0; i < fields.length; i++) {
					Field field = fields[i];// 获得指定属性
					if (field.getType().equals(JTextField.class)) { // 只验证JTextField类型的属性
						field.setAccessible(true); // 私有属性必须设为true才允许访问
						JTextField textField = null;// 声明一个JTextField类型的对象
						try {
							textField = (JTextField) field.get(MenuDialog.this); // 获得本类中的相应对象
						} catch (Exception exception) {
							exception.printStackTrace();
						}
						if (textField.getText().trim().equals("")) { // 文本框为空
							JOptionPane.showMessageDialog(null, "请填写商品“"
									+ textField.getName() + "”！", "友情提示",
									JOptionPane.INFORMATION_MESSAGE);// 弹出需要输入信息的提示
							textField.requestFocus(); // 令文本框获得焦点
							return;// 返回
						}
					}
				}
				if (sortComboBox.getSelectedIndex() == 0) {// 单独验证下拉菜单
					JOptionPane.showMessageDialog(null, "请选择商品所属“菜系”！", "友情提示",
							JOptionPane.INFORMATION_MESSAGE);
					return;
				}
				//
				String menu[] = new String[7];// 创建一个数组，用来保存菜品信息
				menu[0] = numTextField.getText().trim();// 获得菜品编号
				menu[1] = nameTextField.getText().trim();// 获得菜品名称
				menu[2] = codeTextField.getText().trim();// 获得菜品助记码
				menu[3] = sortComboBox.getSelectedItem().toString();// 获得菜品所属菜系
				menu[4] = unitTextField.getText().trim();// 获得菜品单位
				menu[5] = unitPriceTextField.getText().trim();// 获得菜品单价
				menu[6] = "销售";
				if (menu[1].length() > 10) {
					JOptionPane.showMessageDialog(null, "菜品名称最多只能为 10 个汉字！",
							"友情提示", JOptionPane.INFORMATION_MESSAGE);
					nameTextField.requestFocus();
					return;
				}
				if (menu[2].length() > 10) {
					JOptionPane.showMessageDialog(null, "助记码最多只能为 10 个字符！",
							"友情提示", JOptionPane.INFORMATION_MESSAGE);
					codeTextField.requestFocus();
					return;
				}
				if (menu[4].length() > 2) {
					JOptionPane.showMessageDialog(null, "单位最多只能为 2 个汉字！",
							"友情提示", JOptionPane.INFORMATION_MESSAGE);
					unitTextField.requestFocus();
					return;
				}
				if (!Validate.execute("[1-9]{1}[0-9]{0,3}", menu[5])) {
					String infos[] = { "单价输入错误！", "单价必须在 1——9999" };
					JOptionPane.showMessageDialog(null, infos, "友情提示",
							JOptionPane.INFORMATION_MESSAGE);
					unitPriceTextField.requestFocus();
					return;
				}
				if (dao.sMenuByNameAndState(menu[1], "销售") != null) {
					JOptionPane.showMessageDialog(null, "该菜品已经存在！", "友情提示",
							JOptionPane.INFORMATION_MESSAGE);
					nameTextField.requestFocus();
					return;
				}
				int row = tableModel.getRowCount();// 获得当前拥有的菜品数量
				Vector newMenuV = new Vector();
				newMenuV.add(row + 1);// 添加序号
				for (int i = 0; i < menu.length; i++) {
					newMenuV.add(menu[i]);// 添加菜品信息
				}

				Vector sortVector = (Vector) dao.sSortByName(menu[3]).get(0);// 获得所属菜系
				menu[3] = sortVector.get(1).toString();// 设置菜系主键
				Vector homonymyMenuOfDel = dao.sMenuByNameAndState(menu[1],
						"删除");
				if (homonymyMenuOfDel == null) {
					dao.iMenu(menu);// 将新菜品信息保存到数据库
				} else {
					newMenuV.set(1, homonymyMenuOfDel.get(0));
					dao.uMenu(menu);
				}

				tableModel.addRow(newMenuV);// 将新菜品添加到表格中
				table.setRowSelectionInterval(row, row);// 选中新添加的菜品
				numTextField.setText(getNextNum(menu[0]));
				nameTextField.setText(null);
				codeTextField.setText(null);
				sortComboBox.setSelectedIndex(0);
				unitTextField.setText(null);
				unitPriceTextField.setText(null);
				//
			}
		});
		addButton.setText("添加");
		panel.add(addButton);

		final JButton delButton = new JButton();
		delButton.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				int row = table.getSelectedRow();// 获得选中的菜品
				String delMenuName = table.getValueAt(row, 2).toString();
				String info = "确定要删除菜品“" + delMenuName + "”？";
				int j = JOptionPane.showConfirmDialog(null, info, "友情提示",
						JOptionPane.YES_NO_OPTION);// 弹出确认提示框
				if (j == 0) {// 确认删除
					tableModel.removeRow(row);// 从表格中移除菜品信息
					int rowCount = table.getRowCount();// 获得删除后拥有的菜品数
					if (rowCount > 0) {// 还拥有菜品
						if (row < table.getRowCount()) {// 删除的不是位于表格最后的菜系
							for (int i = row; i < table.getRowCount(); i++) {
								table.setValueAt(i + 1 + "", i, 0);// 修改位于删除菜系之后的序号
							}
							table.setRowSelectionInterval(row, row);// 设置上移到删除行索引的菜系为被选中
						} else {
							table.setRowSelectionInterval(row - 1, row - 1);// 设置当前位于表格最后的菜系被选中
						}
					}
					//
					dao.uMenuStateByName(delMenuName, "删除");
					JDBC.closeConnection();
				}
			}
		});
		delButton.setText("删除");
		panel.add(delButton);

		final JScrollPane scrollPane = new JScrollPane();
		getContentPane().add(scrollPane);

		String columnNames[] = new String[] { "序 号", "编 号", "名 称", "助记码",
				"菜 系", "单 位", "单 价" };
		for (int i = 0; i < columnNames.length; i++) {
			tableColumnV.add(columnNames[i]);
		}

		tableModel.setDataVector(dao.sMenuOfSell(), tableColumnV);
		JDBC.closeConnection();

		table = new MTable(tableModel);
		if (table.getRowCount() > 0)
			table.setRowSelectionInterval(0, 0);
		scrollPane.setViewportView(table);

		final JLabel leftPlaceholderLabel = new JLabel();
		leftPlaceholderLabel.setPreferredSize(new Dimension(20, 20));
		getContentPane().add(leftPlaceholderLabel, BorderLayout.WEST);

		final JPanel exitPanel = new JPanel();
		final FlowLayout flowLayout = new FlowLayout();
		flowLayout.setAlignment(FlowLayout.RIGHT);
		exitPanel.setLayout(flowLayout);
		getContentPane().add(exitPanel, BorderLayout.SOUTH);

		final JButton exitButton = new JButton();
		exitPanel.add(exitButton);
		exitButton.setText("退出");
		exitButton.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				dispose();
			}
		});

		final JLabel bottomPlaceholderLabel = new JLabel();
		bottomPlaceholderLabel.setPreferredSize(new Dimension(10, 40));
		exitPanel.add(bottomPlaceholderLabel);

		final JLabel rightPlaceholderLabel = new JLabel();
		rightPlaceholderLabel.setPreferredSize(new Dimension(20, 20));
		getContentPane().add(rightPlaceholderLabel, BorderLayout.EAST);
		//
	}

	private String getNextNum(String maxNum) {
		String date = Today.getDateOfNum().substring(2);
		if (maxNum == null) {
			maxNum = date + "01";
		} else {
			if (maxNum.subSequence(0, 6).equals(date)) {
				maxNum = maxNum.substring(6);
				int nextNum = Integer.valueOf(maxNum) + 1;
				if (nextNum < 10)
					maxNum = date + "0" + nextNum;
				else
					maxNum = date + nextNum;
			} else {
				maxNum = date + "01";
			}
		}
		return maxNum;
	}

}