基于java和mysql的swing+mysql图书管理系统(java+swing+gui+mysql)
·
基于java和mysql的swing+mysql图书管理系统(java+swing+gui+mysql)
私信源码获取及调试交流
私信源码获取及调试交流
运行环境
Java≥8、MySQL≥5.7
开发工具
eclipse/idea/myeclipse/sts等均可配置运行
适用
课程设计，大作业，毕业设计，项目练习，学习演示等
功能说明
基于java的Swing+MySQL图书管理系统(java+swing+gui+mysql)
功能介绍：借阅列表、图书类别管理、图书馆里、用户管理、借阅管理、关于我们
scrollPane.setViewportBorder(new LineBorder(new Color(0, 0, 0)));
scrollPane.setBounds(31, 113, 456, 143);
getContentPane().add(scrollPane);
bookTypeTable = new JTable();
bookTypeTable.addMouseListener(new MouseAdapter() {
@Override
public void mousePressed(MouseEvent e) {
int row = bookTypeTable.getSelectedRow();
idTxt.setText((String) bookTypeTable.getValueAt(row, 0));
bookTypeNameTxt.setText((String) bookTypeTable.getValueAt(row,
1));
bookTypeDescTxt.setText((String) bookTypeTable.getValueAt(row,
2));
}
});
bookTypeTable.setModel(new DefaultTableModel(new Object[][] {},
new String[] { "\u7F16\u53F7",
"\u56FE\u4E66\u7C7B\u522B\u540D\u79F0",
"\u56FE\u4E66\u7C7B\u522B\u63CF\u8FF0" }) {
boolean[] columnEditables = new boolean[] { false, false, false };
public boolean isCellEditable(int row, int column) {
return columnEditables[column];
}
});
bookTypeTable.getColumnModel().getColumn(1).setPreferredWidth(107);
bookTypeTable.getColumnModel().getColumn(2).setPreferredWidth(243);
bookTypeTable.setToolTipText("\u56FE\u4E66\u7C7B\u522B");
bookTypeTable.setSurrendersFocusOnKeystroke(true);
scrollPane.setViewportView(bookTypeTable);
JPanel panel = new JPanel();
panel.setBorder(new TitledBorder(null, "\u8868\u5355\u64CD\u4F5C",
TitledBorder.LEADING, TitledBorder.TOP, null, null));
panel.setToolTipText("\u8868\u5355\u64CD\u4F5C");
panel.setBounds(31, 282, 456, 196);
getContentPane().add(panel);
panel.setLayout(null);
JLabel label = new JLabel("\u7F16\u53F7\uFF1A");
label.setBounds(10, 44, 50, 23);
panel.add(label);
idTxt = new JTextField();
idTxt.setEditable(false);
idTxt.setBounds(71, 45, 72, 21);
if (StringUtil.isEmpty(author)) {
JOptionPane.showMessageDialog(null, "图书作者不能为空！");
return;
}
if (StringUtil.isEmpty(price)) {
JOptionPane.showMessageDialog(null, "图书价格不能为空！");
return;
}
BookType bookType = (BookType) jcb_bookType.getSelectedItem();
int bookTypeId = bookType.getId();
Book book = new Book(Integer.parseInt(id), bookName, author,
Float.parseFloat(price), bookDesc, bookTypeId);
Connection con = null;
try {
con = dbUtil.getCon();
int modifyNum = bookDao.bookModify(con, book);
if (modifyNum == 1) {
JOptionPane.showMessageDialog(null, "修改成功");
resetValue();
fillTable(new Book());
} else {
JOptionPane.showMessageDialog(null, "修改失败");
}
} catch (Exception ex) {
ex.printStackTrace();
JOptionPane.showMessageDialog(null, "修改失败");
} finally {
try {
dbUtil.closeCon(con);
} catch (Exception ec) {
ec.printStackTrace();
}
}
}
});
jb_modify.setBounds(66, 225, 93, 23);
panel_1.add(jb_modify);
// 删除按钮
JButton jb_delete = new JButton("\u5220\u9664");
jb_delete.setIcon(new ImageIcon(
"D:\\java\\MyBookManager\\image\\delete.png"));
jb_delete.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
String id = idTxt.getText();
if (StringUtil.isEmpty(id)) {
JOptionPane.showMessageDialog(null, "请选择要删除的记录！");
return;
}
int n = JOptionPane.showConfirmDialog(null, "确定要删除这条记录吗？");
if (n == 0) {
Connection con = null;
try {
getContentPane().add(lb_bookType);
jcb_bookType = new JComboBox();
jcb_bookType.setBounds(304, 97, 101, 21);
getContentPane().add(jcb_bookType);
JLabel lb_bookDesc = new JLabel("\u56FE\u4E66\u7B80\u4ECB\uFF1A");
lb_bookDesc.setBounds(28, 176, 73, 15);
getContentPane().add(lb_bookDesc);
bookDescTxt = new JTextArea();
bookDescTxt.setBounds(112, 172, 297, 127);
getContentPane().add(bookDescTxt);
// 添加图书按钮
JButton jb_bookAdd = new JButton("\u6DFB\u52A0");
jb_bookAdd.setIcon(new ImageIcon(
"D:\\java\\MyBookManager\\image\\add.png"));
jb_bookAdd.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
String bookName = bookNameTxt.getText();
String bookAuthor = bookAuthorTxt.getText();
String bookPrice = bookPriceTxt.getText();
String bookDesc = bookDescTxt.getText();
if (StringUtil.isEmpty(bookName)) {
JOptionPane.showMessageDialog(null, "图书名称不能为空");
return;
}
if (StringUtil.isEmpty(bookAuthor)) {
JOptionPane.showMessageDialog(null, "图书作者不能为空");
return;
}
if (StringUtil.isEmpty(bookPrice)) {
JOptionPane.showMessageDialog(null, "图书价格不能为空");
return;
}
BookType bookType = (BookType) jcb_bookType.getSelectedItem();
int bookTypeId = bookType.getId();
Book book = new Book(-1, bookName, bookAuthor, Float
.parseFloat(bookPrice), bookDesc, bookTypeId);
Connection con = null;
try {
con = dbUtil.getCon();
int addNum = BookDao.bookAdd(con, book);
if (1 == addNum) {
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
dbUtil.closeCon(con);
} catch (Exception e) {
e.printStackTrace();
}
}
}
private void init() {
JLabel lb_bookTypeName = new JLabel(
"\u56FE\u4E66\u7C7B\u522B\u540D\u79F0\uFF1A");
lb_bookTypeName.setBounds(31, 61, 93, 15);
getContentPane().add(lb_bookTypeName);
s_bookTypeNameTxt = new JTextField();
s_bookTypeNameTxt.setBounds(134, 58, 185, 21);
getContentPane().add(s_bookTypeNameTxt);
s_bookTypeNameTxt.setColumns(10);
// 搜索按钮
JButton jb_search = new JButton("\u67E5\u8BE2");
jb_search.setIcon(new ImageIcon(
"D:\\java\\MyBookManager\\image\\search.png"));
jb_search.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
String bookTypeName = s_bookTypeNameTxt.getText();
BookType bookType = new BookType();
bookType.setBookTypeName(bookTypeName);
fillTable(bookType);
}
});
jb_search.setBounds(379, 57, 108, 23);
getContentPane().add(jb_search);
JScrollPane scrollPane = new JScrollPane();
scrollPane.addMouseListener(new MouseAdapter() {
@Override
public void mousePressed(MouseEvent e) {
}
});
scrollPane.setViewportBorder(new LineBorder(new Color(0, 0, 0)));
scrollPane.setBounds(31, 113, 456, 143);
});
jb_search.setBounds(510, 16, 93, 23);
panel.add(jb_search);
panel.setFocusTraversalPolicy(new FocusTraversalOnArray(
new Component[] { lblid, userIdTxt, lblid_1, bookIdTxt,
jb_search }));
JScrollPane scrollPane = new JScrollPane();
scrollPane.setBounds(10, 92, 655, 174);
getContentPane().add(scrollPane);
// 借书记录表格
table = new JTable();
table.addMouseListener(new MouseAdapter() {
@Override
public void mousePressed(MouseEvent e) {
int row = table.getSelectedRow();
s_idTxt.setText(table.getValueAt(row, 0) + "");
String userName = table.getValueAt(row, 1) + "";
s_userNameTxt.setText(userName.replaceAll("\\(\\d*\\)", ""));
String bookName = table.getValueAt(row, 2) + "";
s_bookNameTxt.setText(bookName.replaceAll("\\(\\d*\\)", ""));
}
});
table.setModel(new DefaultTableModel(new Object[][] { { null, null,
null }, }, new String[] { "\u7F16\u53F7", "\u501F\u9605\u4EBA",
"\u501F\u9605\u56FE\u4E66" }));
table.getColumnModel().getColumn(0).setPreferredWidth(83);
table.getColumnModel().getColumn(1).setPreferredWidth(162);
table.getColumnModel().getColumn(2).setPreferredWidth(187);
scrollPane.setViewportView(table);
JPanel panel_1 = new JPanel();
panel_1.setBorder(new TitledBorder(null, "\u8868\u5355\u64CD\u4F5C",
TitledBorder.LEADING, TitledBorder.TOP, null, null));
panel_1.setBounds(10, 276, 655, 101);
getContentPane().add(panel_1);
panel_1.setLayout(null);
JLabel label_2 = new JLabel("\u7F16\u53F7\uFF1A");
label_2.setBounds(10, 33, 60, 15);
panel_1.add(label_2);
s_idTxt = new JTextField();
s_idTxt.setBounds(91, 30, 66, 21);
panel_1.add(s_idTxt);
s_idTxt.setColumns(10);
scrollPane.setBounds(31, 113, 456, 143);
getContentPane().add(scrollPane);
bookTypeTable = new JTable();
bookTypeTable.addMouseListener(new MouseAdapter() {
@Override
public void mousePressed(MouseEvent e) {
int row = bookTypeTable.getSelectedRow();
idTxt.setText((String) bookTypeTable.getValueAt(row, 0));
bookTypeNameTxt.setText((String) bookTypeTable.getValueAt(row,
1));
bookTypeDescTxt.setText((String) bookTypeTable.getValueAt(row,
2));
}
});
bookTypeTable.setModel(new DefaultTableModel(new Object[][] {},
new String[] { "\u7F16\u53F7",
"\u56FE\u4E66\u7C7B\u522B\u540D\u79F0",
"\u56FE\u4E66\u7C7B\u522B\u63CF\u8FF0" }) {
boolean[] columnEditables = new boolean[] { false, false, false };
public boolean isCellEditable(int row, int column) {
return columnEditables[column];
}
});
bookTypeTable.getColumnModel().getColumn(1).setPreferredWidth(107);
bookTypeTable.getColumnModel().getColumn(2).setPreferredWidth(243);
bookTypeTable.setToolTipText("\u56FE\u4E66\u7C7B\u522B");
bookTypeTable.setSurrendersFocusOnKeystroke(true);
scrollPane.setViewportView(bookTypeTable);
JPanel panel = new JPanel();
panel.setBorder(new TitledBorder(null, "\u8868\u5355\u64CD\u4F5C",
TitledBorder.LEADING, TitledBorder.TOP, null, null));
panel.setToolTipText("\u8868\u5355\u64CD\u4F5C");
panel.setBounds(31, 282, 456, 196);
getContentPane().add(panel);
panel.setLayout(null);
JLabel label = new JLabel("\u7F16\u53F7\uFF1A");
label.setBounds(10, 44, 50, 23);
panel.add(label);
public class LendBookManageInterFrm extends JInternalFrame {
DbUtil dbUtil = new DbUtil();
UserDao userDao = new UserDao();
BookDao bookDao = new BookDao();
private JTextField userIdTxt;
private JTextField bookIdTxt;
private JTable table;
private JTextField s_idTxt;
private JTextField s_userNameTxt;
private JTextField s_bookNameTxt;
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
LendBookManageInterFrm frame = new LendBookManageInterFrm();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the frame.
*/
public LendBookManageInterFrm() {
this.idTxt.setText("");
this.bookNameTxt.setText("");
this.bookAuthorTxt.setText("");
this.bookPriceTxt.setText("");
this.bookDescTxt.setText("");
if (jcb_bookType.getItemCount() > 0) {
jcb_bookType.setSelectedIndex(0);
}
}
}
public class UserMainFrm extends JFrame {
jmi_bookManage.setIcon(new ImageIcon(
"D:\\java\\MyBookManager\\image\\bookManager.png"));
jmi_bookManage.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
BookManageInterFrm bookManageInterFrm = new BookManageInterFrm();
bookManageInterFrm.setVisible(true);
table.add(bookManageInterFrm);
}
});
menu_1.add(jmi_bookManage);
JMenuItem menu_2 = new JMenuItem("\u9000\u51FA");
menu_2.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
dispose();
}
});
mn_datamanager.add(menu_2);
JMenu mn_lendreturn = new JMenu("\u501F\u9605\u7BA1\u7406");
menuBar.add(mn_lendreturn);
JMenuItem menuItem = new JMenuItem(
"\u56FE\u4E66\u501F\u9605\u7BA1\u7406");
menuItem.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
LendBookManageInterFrm lendBookManageInterFrm = new LendBookManageInterFrm();
lendBookManageInterFrm.setVisible(true);
table.add(lendBookManageInterFrm);
}
});
mn_lendreturn.add(menuItem);
JMenu mnNewMenu_2 = new JMenu("\u5173\u4E8E\u6211\u4EEC");
menuBar.add(mnNewMenu_2);
// 关于我们
JMenuItem menuItem_1 = new JMenuItem("\u5173\u4E8E\u8F6F\u4EF6");
menuItem_1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
JOptionPane
.showMessageDialog(
null,
"**********************************************\n"
+ " 编写者：围观客 "
+ " 网站地址：http://www.weiguanke.cn"
+ " 谢谢大家使用我门的软件");
}
});
mnNewMenu_2.add(menuItem_1);
}
} finally {
try {
dbUtil.closeCon(con);
} catch (Exception e1) {
e1.printStackTrace();
}
}
}
});
jb_modify.setBounds(71, 156, 90, 23);
panel.add(jb_modify);
// 删除按钮
JButton jb_delete = new JButton("\u5220\u9664");
jb_delete.setIcon(new ImageIcon(
"D:\\java\\MyBookManager\\image\\delete.png"));
jb_delete.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
String id = idTxt.getText();
Connection con = null;
try {
con = dbUtil.getCon();
int re = bookTypeDao.bookTypeDelete(con, id);
if (1 == re) {
JOptionPane.showMessageDialog(null, "删除成功");
fillTable(new BookType("", ""));
reset();
} else {
JOptionPane.showMessageDialog(null, "删除失败");
}
} catch (Exception e1) {
JOptionPane.showMessageDialog(null, "删除失败");
e1.printStackTrace();
} finally {
try {
dbUtil.closeCon(con);
} catch (Exception e1) {
e1.printStackTrace();
}
}
}
});
jb_delete.setBounds(215, 156, 90, 23);
panel.add(jb_delete);
getContentPane().setFocusTraversalPolicy(
new FocusTraversalOnArray(new Component[] { lb_bookTypeName,
s_bookTypeNameTxt, jb_search, scrollPane, panel, label,
idTxt, label_1, bookTypeNameTxt, label_2,
bookTypeDescTxt, jb_modify, jb_delete }));
}
private void reset() {
idTxt.setText("");
bookTypeNameTxt.setText("");
bookTypeDescTxt.setText("");
} finally {
try {
dbUtil.closeCon(con);
} catch (Exception e) {
e.printStackTrace();
}
}
}
// 填充表格
private void fillTable(Book book) {
DefaultTableModel dtm = (DefaultTableModel) bookTable.getModel();
dtm.setRowCount(0);
Connection con = null;
try {
con = dbUtil.getCon();
ResultSet rs = bookDao.bookList(con, book);
while (rs.next()) {
Vector v = new Vector();
v.add(rs.getInt("id"));
v.add(rs.getString("bookName"));
v.add(rs.getString("author"));
v.add(rs.getFloat("price"));
v.add(rs.getString("bookDesc"));
v.add(rs.getString("bookTypeName"));
dtm.addRow(v);
}
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
dbUtil.closeCon(con);
} catch (Exception e) {
e.printStackTrace();
}
}
}
private void init() {
scrollPane = new JScrollPane();
scrollPane.setToolTipText("");
scrollPane.setBounds(30, 91, 732, 178);
getContentPane().add(scrollPane);
String userName = userNameTxt.getText();
String userPassword = new String(userPasswordTxt.getPassword());
if (StringUtil.isEmpty(userName)) {
JOptionPane.showMessageDialog(null, "用户名不能为空");
return;
}
if (StringUtil.isEmpty(userPassword)) {
JOptionPane.showMessageDialog(null, "密码不能为空");
return;
}
User user = new User(userName, userPassword);
Connection con = null;
try {
con = dbUtil.getCon();
User reUser = userDao.login(con, user);
if (reUser != null) {
dispose();// 销毁登录框
if (1 == reUser.getRole()) {
new MainFrm().setVisible(true);// 创建管理员主界面Firme
} else if (0 == reUser.getRole()) {
new UserMainFrm(reUser).setVisible(true); // 创建读者界面
}
} else {
JOptionPane.showMessageDialog(null, "用户名或密码不正确");
}
} catch (Exception e1) {
JOptionPane.showMessageDialog(null, "登录失败");
e1.printStackTrace();
} finally {
try {
con.close();
} catch (SQLException e1) {
e1.printStackTrace();
}
}
}
});
jb_login.setBounds(102, 191, 93, 23);
contentPane.add(jb_login);
// 重置按钮
JButton jb_reset = new JButton("\u91CD\u7F6E");
jb_reset.setIcon(new ImageIcon(
"D:\\java\\MyBookManager\\image\\reset.png"));
jb_reset.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
bookAuthorTxt = new JTextField();
bookAuthorTxt.setColumns(10);
bookAuthorTxt.setBounds(299, 78, 118, 21);
panel_1.add(bookAuthorTxt);
JLabel label_4 = new JLabel("\u56FE\u4E66\u4EF7\u683C\uFF1A");
label_4.setBounds(10, 160, 76, 15);
panel_1.add(label_4);
bookPriceTxt = new JTextField();
bookPriceTxt.setBounds(96, 157, 117, 21);
panel_1.add(bookPriceTxt);
bookPriceTxt.setColumns(10);
JLabel label_5 = new JLabel("\u56FE\u4E66\u7C7B\u522B\uFF1A");
label_5.setBounds(224, 160, 65, 15);
panel_1.add(label_5);
jcb_bookType = new JComboBox<BookType>();
jcb_bookType.setBounds(299, 157, 118, 21);
panel_1.add(jcb_bookType);
JLabel label_6 = new JLabel("\u56FE\u4E66\u63CF\u8FF0\uFF1A");
label_6.setBounds(439, 81, 65, 15);
panel_1.add(label_6);
bookDescTxt = new JTextArea();
bookDescTxt.setBounds(514, 77, 208, 98);
panel_1.add(bookDescTxt);
// 修改按钮
JButton jb_modify = new JButton("\u4FEE\u6539");
jb_modify.setIcon(new ImageIcon(
"D:\\java\\MyBookManager\\image\\modify.png"));
jb_modify.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
String id = idTxt.getText();
if (StringUtil.isEmpty(id)) {
JOptionPane.showMessageDialog(null, "请选择要修改的记录！");
return;
}
menuItem_1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
JOptionPane
.showMessageDialog(
null,
"**********************************************\n"
+ " 编写者：围观客 "
+ " 网站地址：http://www.weiguanke.cn"
+ " 谢谢大家使用我门的软件");
}
});
mnNewMenu_2.add(menuItem_1);
}
}
public class LogonFrm extends JFrame {
private JPanel contentPane;
private JTextField userNameTxt;
private JPasswordField userPasswordTxt;
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
LogonFrm frame = new LogonFrm();
frame.setVisible(true);
} catch (Exception e) {
JOptionPane.showMessageDialog(null, "删除失败");
e1.printStackTrace();
}
}
}
});
jb_delete.setBounds(257, 225, 93, 23);
panel_1.add(jb_delete);
}
private void resetValue() {
this.idTxt.setText("");
this.bookNameTxt.setText("");
this.bookAuthorTxt.setText("");
this.bookPriceTxt.setText("");
this.bookDescTxt.setText("");
if (jcb_bookType.getItemCount() > 0) {
jcb_bookType.setSelectedIndex(0);
}
}
}
s_bookTypeNameTxt, jb_search, scrollPane, panel, label,
idTxt, label_1, bookTypeNameTxt, label_2,
bookTypeDescTxt, jb_modify, jb_delete }));
}
private void reset() {
idTxt.setText("");
bookTypeNameTxt.setText("");
bookTypeDescTxt.setText("");
}
}
public class LendBookManageInterFrm extends JInternalFrame {
DbUtil dbUtil = new DbUtil();
UserDao userDao = new UserDao();
BookDao bookDao = new BookDao();
private JTextField userIdTxt;
fillTable(new BookType("", ""));
}
// 填充表格
private void fillTable(BookType bookType) {
DefaultTableModel dtm = (DefaultTableModel) bookTypeTable.getModel();
dtm.setRowCount(0);
Connection con = null;
try {
con = dbUtil.getCon();
ResultSet res = bookTypeDao.bookTypeList(con, bookType);
while (res.next()) {
Vector v = new Vector();
v.add(res.getString("id"));
v.add(res.getString("bookTypeName"));
v.add(res.getString("bookTypeDesc"));
dtm.addRow(v);
}
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
dbUtil.closeCon(con);
} catch (Exception e) {
e.printStackTrace();
}
}
}
private void init() {
JLabel lb_bookTypeName = new JLabel(
"\u56FE\u4E66\u7C7B\u522B\u540D\u79F0\uFF1A");
lb_bookTypeName.setBounds(31, 61, 93, 15);
getContentPane().add(lb_bookTypeName);
s_bookTypeNameTxt = new JTextField();
s_bookTypeNameTxt.setBounds(134, 58, 185, 21);
getContentPane().add(s_bookTypeNameTxt);
s_bookTypeNameTxt.setColumns(10);
// 搜索按钮
JButton jb_search = new JButton("\u67E5\u8BE2");
jb_search.setIcon(new ImageIcon(
"D:\\java\\MyBookManager\\image\\search.png"));
private void init() {
DbUtil dbUtil = new DbUtil();
UserDao userDao = new UserDao();
JLabel lb_userName = new JLabel("\u7528\u6237\u540D\uFF1A");
lb_userName.setBounds(102, 75, 54, 15);
contentPane.add(lb_userName);
userNameTxt = new JTextField();
userNameTxt.setBounds(166, 72, 152, 21);
contentPane.add(userNameTxt);
userNameTxt.setColumns(10);
JLabel lb_userPassword = new JLabel("\u5BC6 \u7801\uFF1A");
lb_userPassword.setBounds(102, 129, 54, 15);
contentPane.add(lb_userPassword);
// 登录按钮
JButton jb_login = new JButton("\u767B\u5F55");
jb_login.setIcon(new ImageIcon(
"D:\\java\\MyBookManager\\image\\login.png"));
jb_login.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
String userName = userNameTxt.getText();
String userPassword = new String(userPasswordTxt.getPassword());
if (StringUtil.isEmpty(userName)) {
JOptionPane.showMessageDialog(null, "用户名不能为空");
return;
}
if (StringUtil.isEmpty(userPassword)) {
JOptionPane.showMessageDialog(null, "密码不能为空");
return;
}
User user = new User(userName, userPassword);
Connection con = null;
try {
con = dbUtil.getCon();
User reUser = userDao.login(con, user);
if (reUser != null) {
dispose();// 销毁登录框
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