发布时间 : 星期四 文章基于Java和Oracle的学生信息管理系统更新完毕开始阅读
String pad = password.getText();
String sql1=\+id+\; if(e.getSource()==Changepassword) {
try { }
catch (ClassNotFoundException ce) { } try {
Connection con =
JOptionPane.showMessageDialog(s,ce.getMessage()); Class.forName(\);
String sql2=\+id+\+pad+\;
DriverManager.getConnection(\,\\,\);
Statement stmt = con.createStatement();
ResultSet rs = stmt.executeQuery(\);
rs=stmt.executeQuery(\ID='\+id+\);
if(id.equals(\)) {
JOptionPane.showMessageDialog(s,\学号未填写！\); }
else if(rs.next())//如果账号存在 {
if(pad.equals(0)) { }
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JOptionPane.showMessageDialog(s,\密码未填写！\);
else { \);
setVisible(false); } rs.close(); stmt.close();
stmt.executeUpdate(sql1); stmt.executeUpdate(sql2);
{
JOptionPane.showMessageDialog(s,\密码已重置！
} } else {
JOptionPane.showMessageDialog(s,\学号不存在，请重新输入正确的学号！\); }
}
public static void main(String[] args)
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}
}
catch (SQLException se) { }
JOptionPane.showMessageDialog(s,se.getMessage());
else { }
ID.setText(\); password.setText(\); ID.requestFocus();
}
{ }
@SuppressWarnings(\)
Changepassword ch = new Changepassword();
3.5.教师修改登录密码模块 //函数库
import javax.swing.*; import java.awt.event.*; import java.sql.*;
public class tchlogpassword extends JFrame implements ActionListener {
private static final long serialVersionUID = 1L; /*修改登陆密码控件*/ static Changepassword s; JPanel jpl = new JPanel();
JLabel label1 = new JLabel(\账 号\,JLabel.LEFT); JLabel label2 = new JLabel(\原 密 码\,JLabel.LEFT); JLabel label3 = new JLabel(\新 密 码\,JLabel.LEFT); JTextField ID = new JTextField();
JTextField oldpassword = new JTextField(); JTextField password = new JTextField();
JButton Changepassword = new JButton(\重 置\); JButton reset = new JButton(\清 空\); public tchlogpassword() {
super(\修改登陆密码(教师)\); this.setSize(500,400); this.setVisible(true); //将当前窗口防止在屏幕中央 setLocationRelativeTo(null); this.setResizable(false);
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}
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); this.add(jpl); jpl.setLayout(null);
Changepassword.addActionListener(this); reset.addActionListener(this); label1.setBounds(140,120,50,20); jpl.add(label1);
ID.setBounds(190,120,150,20); jpl.add(ID);
label2.setBounds(140,160,50,20); jpl.add(label2);
oldpassword.setBounds(190,160,150,20); jpl.add(oldpassword);
label3.setBounds(140,200,50,20); jpl.add(label3);
password.setBounds(190,200,150,20); jpl.add(password);
Changepassword.setBounds(190,240,70,20); jpl.add(Changepassword); reset.setBounds(270,240,70,20); jpl.add(reset);
public void actionPerformed(ActionEvent e) {
String id = ID.getText();
String oldpad = oldpassword.getText(); String pad = password.getText(); if(e.getSource()==Changepassword) {
try {
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