denglu.zip_源码

package d; import java.awt.*; import java.awt.event.*; import java.sql.*; import java.util.Calendar; import java.util.Random; import javax.swing.*; public class NNN { public static void main(String[] args) { De s=new De(); s.set(); } } class De extends JFrame { private JFrame frame =new JFrame(); private JLabel title=new JLabel("欢迎登陆"); private JLabel name=new JLabel("账号"); private JLabel password=new JLabel("密码"); private JTextField number=new JTextField(13); private JPasswordField id=new JPasswordField(13); private JButton b=new JButton(); private JButton b1=new JButton("确定"); private JButton b2=new JButton("重置"); private JButton b3=new JButton("退出"); private JPanel p1=new JPanel(); private JPanel p2=new JPanel(); private JPanel p3=new JPanel(); private JPanel p4=new JPanel(); private JPanel p5=new JPanel(); private int a=0; public void set() { //标题 Font m=new Font("华文行楷",1,50); title.setFont(m); title.setForeground(Color.RED); //添加p1 p1.add(title); //文本框 Font h=new Font("黑体",1,23); Font s=new Font("",1,16); name.setFont(h); password.setFont(h); number.setFont(s); id.setFont(s); //添加p2 p2.add(name); p2.add(number); //添加p3 p3.add(password); p3.add(id); //监听器 b1.addActionListener ( new ActionListener() { public void actionPerformed(ActionEvent e) { sql(number.getText(),id.getPassword()); if(a==1) { JOptionPane.showMessageDialog(null,"验证正确,即将进入程序,请稍后......"); show(); frame.dispose(); } if(a==0) { JOptionPane.showMessageDialog(null,"验证错误,请重新输入......"); number.setText(""); id.setText(""); } } } ); b2.addActionListener ( new ActionListener() { public void actionPerformed(ActionEvent e) { number.setText(""); id.setText(""); } } ); b3.addActionListener ( new ActionListener() { public void actionPerformed(ActionEvent e) { JOptionPane.showMessageDialog(null,"即将退出程序,请稍后......"); System.exit(0); } } ); p4.add(b1); p4.add(b2); p4.add(b3); //设置框架 frame.setLayout(new GridLayout(0,1)); frame.add(p1); frame.add(p2); frame.add(p3); frame.add(p4); frame.setTitle("登陆"); frame.setVisible(true); frame.setBounds(800, 300,500,400); frame.setResizable(false); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); } public void sql(String s1,char c[]) { Connection co=null; PreparedStatement pps=null; ResultSet rr=null; try { Class.forName("com.mysql.jdbc.Driver"); } catch (ClassNotFoundException e) { // TODO 自动生成的 catch 块 e.printStackTrace(); } String m1="jdbc:mysql://localhost:3306/login?useUnicode=true&characterEncoding=utf8"; String m2="root"; String m3="root"; try { co=DriverManager.getConnection(m1, m2, m3); String sql="select id,password from Plane"; pps=co.prepareStatement(sql); rr=pps.executeQuery(); while(rr.next()) { String ss=rr.getString(1); String sss=rr.getString(2); c=id.getPassword(); String s2=new String(c); if(ss.equals(s1) && sss.equals(s2)) { a=1; } } } catch (SQLException e) { // TODO 自动生成的 catch 块 e.printStackTrace(); } finally { try { rr.close(); pps.close(); co.close(); } catch (SQLException e) { // TODO 自动生成的 catch 块 e.printStackTrace(); } } } public void show() { JFrame frame=new JFrame(); JPanel p1=new JPanel(); JPanel p2=new JPanel(); JLabel title=new JLabel("欢迎使用"); title.setFont(new Font("华为行楷",1,40)); title.setForeground(Color.red); JButton b1=new JButton("返回"); b1.setFont(new Font("隶书",1,24)); p1.add(title); p2.add(b1); b1.addActionListener ( new ActionListener() { public void actionPerformed(ActionEvent e) { JOptionPane.showMessageDialog(null,"即将返回,请稍后......"); De h=new De(); h.set(); frame.dispose(); } } ); frame.add(p1,BorderLayout.NORTH); frame.add(p2,BorderLayout.SOUTH); frame.setVisible(true); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setResizable(false); frame.setBounds(600,300,400,200); } }