changepassword.java

简单的登录系统

/*
 *修改密码界面
 */

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;

public class ChangePassword extends JFrame {
    private String user_name;//接收要修改密码用户的登录名
    
    /** 类的构造方法*/
    public ChangePassword(String user_name) {
        this.user_name = user_name;//获得用户的登录名
        initComponents();
        setVisible(true);
        setResizable(false);//固定窗体
    }
    
    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    // <editor-fold defaultstate="collapsed" desc=" 生成的代码 ">//GEN-BEGIN:initComponents
    private void initComponents() {
        jDialog1 = new javax.swing.JDialog();
        jLabel4 = new javax.swing.JLabel();
        jButton3 = new javax.swing.JButton();
        jLabel1 = new javax.swing.JLabel();
        jLabel2 = new javax.swing.JLabel();
        jPasswordField1 = new javax.swing.JPasswordField();
        jPasswordField2 = new javax.swing.JPasswordField();
        jButton1 = new javax.swing.JButton();
        jButton2 = new javax.swing.JButton();
        jLabel3 = new javax.swing.JLabel();
        jLabel5 = new javax.swing.JLabel();
        jPasswordField3 = new javax.swing.JPasswordField();

        jDialog1.setBackground(java.awt.Color.white);
        jDialog1.setBounds(new java.awt.Rectangle(350, 350, 500, 150));
        jDialog1.setModal(true);
        jLabel4.setFont(new java.awt.Font("宋体", 1, 16));
        jLabel4.setText("\u5bc6\u7801\u4fee\u6539\u6210\u529f\uff01");

        jButton3.setText("\u786e\u5b9a");
        jButton3.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton3ActionPerformed(evt);
            }
        });

        javax.swing.GroupLayout jDialog1Layout = new javax.swing.GroupLayout(jDialog1.getContentPane());
        jDialog1.getContentPane().setLayout(jDialog1Layout);
        jDialog1Layout.setHorizontalGroup(
            jDialog1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jDialog1Layout.createSequentialGroup()
                .addGroup(jDialog1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(jDialog1Layout.createSequentialGroup()
                        .addGap(172, 172, 172)
                        .addComponent(jLabel4))
                    .addGroup(jDialog1Layout.createSequentialGroup()
                        .addGap(193, 193, 193)
                        .addComponent(jButton3)))
                .addContainerGap(172, Short.MAX_VALUE))
        );
        jDialog1Layout.setVerticalGroup(
            jDialog1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jDialog1Layout.createSequentialGroup()
                .addGap(30, 30, 30)
                .addComponent(jLabel4)
                .addGap(19, 19, 19)
                .addComponent(jButton3)
                .addContainerGap(40, Short.MAX_VALUE))
        );

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        setBounds(new java.awt.Rectangle(400, 300, 200, 200));
        addWindowListener(new java.awt.event.WindowAdapter() {
            public void windowClosing(java.awt.event.WindowEvent evt) {
                formWindowClosing(evt);
            }
        });

        jLabel1.setFont(new java.awt.Font("宋体", 1, 14));
        jLabel1.setText("\u539f\u5bc6\u7801");

        jLabel2.setFont(new java.awt.Font("宋体", 1, 14));
        jLabel2.setHorizontalAlignment(javax.swing.SwingConstants.RIGHT);
        jLabel2.setText("\u786e\u8ba4\u5bc6\u7801");

        jPasswordField1.setEchoChar('*');
        jPasswordField1.addKeyListener(new java.awt.event.KeyAdapter() {
            public void keyTyped(java.awt.event.KeyEvent evt) {
                jPasswordField1KeyTyped(evt);
            }
        });

        jPasswordField2.setEchoChar('*');
        jPasswordField2.addKeyListener(new java.awt.event.KeyAdapter() {
            public void keyTyped(java.awt.event.KeyEvent evt) {
                jPasswordField2KeyTyped(evt);
            }
        });

        jButton1.setText("\u786e\u8ba4");
        jButton1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton1ActionPerformed(evt);
            }
        });

        jButton2.setText("\u53d6\u6d88");
        jButton2.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton2ActionPerformed(evt);
            }
        });

        jLabel3.setFont(new java.awt.Font("宋体", 1, 12));
        jLabel3.setForeground(new java.awt.Color(204, 0, 0));
        jLabel3.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);

        jLabel5.setFont(new java.awt.Font("宋体", 1, 14));
        jLabel5.setText("\u65b0\u5bc6\u7801");

        jPasswordField3.setEchoChar('*');

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGap(115, 115, 115)
                .addComponent(jButton1)
                .addGap(40, 40, 40)
                .addComponent(jButton2)
                .addContainerGap(96, Short.MAX_VALUE))
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                .addContainerGap(32, Short.MAX_VALUE)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addGroup(layout.createSequentialGroup()
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 37, Short.MAX_VALUE)
                                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                                    .addComponent(jLabel5)
                                    .addComponent(jLabel1)))
                            .addComponent(jLabel2, javax.swing.GroupLayout.PREFERRED_SIZE, 82, javax.swing.GroupLayout.PREFERRED_SIZE))
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 53, Short.MAX_VALUE)
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                            .addComponent(jPasswordField3, 0, 0, Short.MAX_VALUE)
                            .addComponent(jPasswordField2)
                            .addComponent(jPasswordField1, javax.swing.GroupLayout.DEFAULT_SIZE, 148, Short.MAX_VALUE))
                        .addGap(50, 50, 50))
                    .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                        .addComponent(jLabel3, javax.swing.GroupLayout.PREFERRED_SIZE, 305, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addGap(28, 28, 28))))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jLabel3, javax.swing.GroupLayout.PREFERRED_SIZE, 20, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jPasswordField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jLabel1))
                .addGap(36, 36, 36)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jPasswordField2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jLabel5))
                .addGap(35, 35, 35)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jPasswordField3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jLabel2))
                .addGap(30, 30, 30)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jButton1)
                    .addComponent(jButton2))
                .addContainerGap(32, Short.MAX_VALUE))
        );
        pack();
    }// </editor-fold>//GEN-END:initComponents

    private void formWindowClosing(java.awt.event.WindowEvent evt) {//GEN-FIRST:event_formWindowClosing
        this.setVisible(false);//
    }//GEN-LAST:event_formWindowClosing

    private void jPasswordField2KeyTyped(java.awt.event.KeyEvent evt) {//GEN-FIRST:event_jPasswordField2KeyTyped
        jLabel3.setText("");//重新输入确认时，取消错误提示信息
    }//GEN-LAST:event_jPasswordField2KeyTyped

    private void jPasswordField1KeyTyped(java.awt.event.KeyEvent evt) {//GEN-FIRST:event_jPasswordField1KeyTyped
        jLabel3.setText("");//重新输入新密码时，取消错误信息
    }//GEN-LAST:event_jPasswordField1KeyTyped

    private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton2ActionPerformed
        this.setVisible(false);//用户点击“取消”按钮时，关闭该修改密码界面
    }//GEN-LAST:event_jButton2ActionPerformed
    /**
     * 用户在对话框点击“确认”后，关闭对话框和修改密码界面
     */
    private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton3ActionPerformed
       this.setVisible(false);
       jDialog1.setVisible(false);
    }//GEN-LAST:event_jButton3ActionPerformed
    /**
     *当用户点击“确认”后，先对用户输入的信息判断，若两次输入不一致，则会显示错误提示信息；
     *输入正确后，连接数据库并进行数据库中数据的更新操作。
     */
    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton1ActionPerformed
        //得到输入的原始密码
        String oldPwd = String.valueOf(jPasswordField1.getPassword());
        //得到输入的新密码
        String newPwd1 = String.valueOf(jPasswordField2.getPassword());
        //得到确认的新密码
        String newPwd2 = String.valueOf(jPasswordField3.getPassword());
        
        JDBC jdbc = new JDBC();//连接数据库
                
        if(jdbc.oldPwdCheck(oldPwd, user_name)) {
            if(newPwd1.equals(newPwd2)) {//检查两次输入的密码是否一致
                //如果两次输入的密码一致，
                //则弹出密码修改成功对话框
                jDialog1.setVisible(true);

                //调用方法，更新数据库中的信息 
                jdbc.changePassword(newPwd1,user_name);           
            } else {
                jLabel3.setText("两次输入的密码不一致，请重新输入！");
            }
        } else {
            jLabel3.setText("您输入的原密码不正确！");
        }
    }//GEN-LAST:event_jButton1ActionPerformed

    // 变量声明 - 不进行修改//GEN-BEGIN:variables
    private javax.swing.JButton jButton1;
    private javax.swing.JButton jButton2;
    private javax.swing.JButton jButton3;
    private javax.swing.JDialog jDialog1;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel2;
    private javax.swing.JLabel jLabel3;
    private javax.swing.JLabel jLabel4;
    private javax.swing.JLabel jLabel5;
    private javax.swing.JPasswordField jPasswordField1;
    private javax.swing.JPasswordField jPasswordField2;
    private javax.swing.JPasswordField jPasswordField3;
    // 变量声明结束//GEN-END:variables
    
}