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import java.awt.event.*;
import javax.swing.*;
import java.util.*;
import java.sql.*;public class AAA extends JFrame implements ActionListener { /**
* @
*/
public static Connection connectMYSql(String url, String username,
String password) {
Connection con = null;
try {
// 加载驱动程序
Class.forName("com.mysql.jdbc.Driver");
} catch (Exception e) {
e.printStackTrace();
return null;
}
try {
con = DriverManager.getConnection(url, username, password);
} catch (SQLException e) {
e.printStackTrace();
return null;
}
return con;
} String title[] = { "考号", "姓名", "成绩", "地址", "简历" };
JTextField txtNo = new JTextField(8);
JTextField txtName = new JTextField(10);
JTextField txtScore = new JTextField(3);
JTextField txtAddr = new JTextField(30);
JTextArea txtResume = new JTextArea();
JPanel p[] = new JPanel[4]; JButton prev = new JButton("前一个");
JButton next = new JButton("后一个");
JButton first = new JButton("第一个");
JButton last = new JButton("最后一个");
Statement sql;
ResultSet rs; AAA(Connection connect) {// 构造方法
super("考生信息查看窗口");
setSize(450, 350);
try {
sql = connect.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,
ResultSet.CONCUR_READ_ONLY);
rs = sql.executeQuery("SELECT * FROM ksInfo");
Container con = getContentPane();
con.setLayout(new BorderLayout(0, 6));
// JPanel p[] = new JPanel[4];
for (int i = 0; i < 4; i++) {
p[i] = new JPanel(new FlowLayout(FlowLayout.LEFT, 8, 0));
p[i].add(new JLabel(title[i]));
}
p[0].add(txtNo);
p[1].add(txtName);
p[2].add(txtScore);
p[3].add(txtAddr);
JPanel p1 = new JPanel(new GridLayout(4, 1, 0, 8));
JScrollPane jsp = new JScrollPane(txtResume,
JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,
JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
jsp.setPreferredSize(new Dimension(300, 60));
p1.setVisible(true) ; this.add(p1) ;
for (int i = 0; i < 4; i++) {
p1.add(p[i]);
p[i].setVisible(true) ;
}
JPanel p2 = new JPanel(new FlowLayout(FlowLayout.LEFT, 10, 0));
p2.setVisible(true) ;
p2.add(new JLabel(title[4]));
p2.add(jsp);
JPanel p3 = new JPanel();
p3.add(prev);
p3.add(next);
p3.add(first);
p3.add(last);
prev.addActionListener(this);
next.addActionListener(this);
first.addActionListener(this);
last.addActionListener(this);
rs.first();
readRecord();
System.out.println(3) ;
// while(rs.next()){
// System.out.println(111) ;
// readRecord();
// break ;
// }
System.out.println(this.txtNo.getText()) ;
} catch (Exception e) {
e.printStackTrace();
}
setVisible(true);
} public void modifyRecord(Connection connect) {
String stuNo = (String) JOptionPane.showInputDialog(null, "请输入考生考号",
"输入考号对话框", JOptionPane.PLAIN_MESSAGE, null, null, "");
try {
sql = connect.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,
ResultSet.CONCUR_READ_ONLY);
rs = sql.executeQuery("SELECT * FROM ksInfo");
Container con = getContentPane();
con.setLayout(new BorderLayout(0, 6));
JPanel p[] = new JPanel[4];
for (int i = 0; i < 4; i++) {
p[i] = new JPanel(new FlowLayout(FlowLayout.LEFT, 8, 0));
p[i].add(new JLabel(title[i]));
p[i].setVisible(true) ; }
p[0].add(txtNo);
p[1].add(txtName);
p[2].add(txtScore);
p[3].add(txtAddr);
System.out.println(1) ;
JPanel p1 = new JPanel(new GridLayout(4, 1, 0, 8));
JScrollPane jsp = new JScrollPane(txtResume,
JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,
JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
jsp.setPreferredSize(new Dimension(300, 60));
for (int i = 0; i < 4; i++) {
p1.add(p[i]);
}
JPanel p2 = new JPanel(new FlowLayout(FlowLayout.LEFT, 10, 0));
p2.add(new JLabel(title[4]));
p2.add(jsp);
JPanel p3 = new JPanel();
p3.add(prev);
p3.add(next);
p3.add(first);
p3.add(last);
System.out.println(2) ;
prev.addActionListener(this);
next.addActionListener(this);
first.addActionListener(this);
last.addActionListener(this);
// rs.first();
System.out.println(3) ;
while(rs.next()){
readRecord();
break ;
}
System.out.println(this.txtNo.getText()) ;
} catch (Exception e) {
e.printStackTrace();
}
setVisible(true);
} public boolean readRecord() {
try {
System.out.println(rs.getString("no")) ;
txtNo.setText(rs.getString("no"));
txtName.setText(rs.getString("name"));
txtScore.setText(rs.getString("score"));
txtAddr.setText(rs.getString("addr"));
txtResume.setText(rs.getString("oo"));
System.out.println(6) ;
} catch (SQLException e) {
e.printStackTrace();
return false;
}
return true;
} public void actionPerformed(ActionEvent e) {
try {
if (e.getSource() == prev)
rs.previous();
else if (e.getSource() == next)
rs.next();
else if (e.getSource() == first)
rs.first();
else if (e.getSource() == last)
rs.last();
readRecord();
} catch (Exception e2) {
}
} public static void main(String[] args) {
Connection connect = null;
JFrame.setDefaultLookAndFeelDecorated(true);
Font font = new Font("JFrame", Font.PLAIN, 14);
if ((connect = connectMYSql("jdbc:mysql://localhost:3306/javaee",
"root", "root")) == null) {
JOptionPane.showMessageDialog(null, "数据库连接失败!");
System.exit(-1);
}
new AAA(connect);// 创建对象
}
}你的窗口没有吧 JPanel加进来 jsp.setPreferredSize(new Dimension(300, 60));
p1.setVisible(true) ; this.add(p1) ; for (int i = 0; i < 4; i++) {
p1.add(p[i]);
p[i].setVisible(true) ;
}