修改密码.java

经过调查分析

/*
 * Mima.java
 *
 * Created on 2008年10月10日, 下午8:25
 */

package javaapplication1;
import java.sql.*;
import java.util.*;
import java.awt.*;
import javax.swing.*;
/**
 *
 * @author  mis06
 */
public class 修改密码 extends javax.swing.JPanel {
    
    /** Creates new form Mima */
    public 修改密码() {
        initComponents();
    }
    
    /** 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=" Generated Code ">//GEN-BEGIN:initComponents
    private void initComponents() {
        jLabel1 = new javax.swing.JLabel();
        jLabel2 = new javax.swing.JLabel();
        jLabel3 = new javax.swing.JLabel();
        jPasswordField1 = new javax.swing.JPasswordField();
        jPasswordField2 = new javax.swing.JPasswordField();
        jPasswordField3 = new javax.swing.JPasswordField();
        jButton1 = new javax.swing.JButton();
        jButton2 = new javax.swing.JButton();

        jLabel1.setText("\u65e7\u5bc6\u7801");

        jLabel2.setText("\u65b0\u5bc6\u7801");

        jLabel3.setText("\u786e\u8ba4\u65b0\u5bc6\u7801");

        jButton1.setText("\u63d0\u4ea4");
        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);
            }
        });

        org.jdesktop.layout.GroupLayout layout = new org.jdesktop.layout.GroupLayout(this);
        this.setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(layout.createSequentialGroup()
                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING, false)
                    .add(layout.createSequentialGroup()
                        .add(41, 41, 41)
                        .add(jButton1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 87, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                        .add(52, 52, 52)
                        .add(jButton2, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
                    .add(layout.createSequentialGroup()
                        .add(16, 16, 16)
                        .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
                            .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.TRAILING)
                                .add(jLabel2)
                                .add(jLabel1))
                            .add(jLabel3))
                        .add(44, 44, 44)
                        .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING, false)
                            .add(jPasswordField1)
                            .add(jPasswordField2)
                            .add(jPasswordField3, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 156, Short.MAX_VALUE))))
                .addContainerGap(208, Short.MAX_VALUE))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(layout.createSequentialGroup()
                .add(27, 27, 27)
                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
                    .add(jLabel1)
                    .add(jPasswordField1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 39, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
                .add(41, 41, 41)
                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
                    .add(jLabel2)
                    .add(jPasswordField2, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 40, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
                .add(49, 49, 49)
                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
                    .add(jLabel3)
                    .add(jPasswordField3, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 37, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
                .add(19, 19, 19)
                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
                    .add(jButton2, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 37, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                    .add(jButton1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 39, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
                .add(61, 61, 61))
        );
    }// </editor-fold>//GEN-END:initComponents

    private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton2ActionPerformed
      System.exit(1);// TODO add your handling code here:
    }//GEN-LAST:event_jButton2ActionPerformed

    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton1ActionPerformed
    Statement statement;
    String s1=new String(jPasswordField1.getPassword());
    String s2=new String(jPasswordField2.getPassword());
    String s3=new String(jPasswordField3.getPassword());
    String s4,s5,s6;
    int flag1=0,flag2=0;
    
    try{
     Connect con=new Connect();
     statement=con.con.createStatement();
     
     if(s2.equals(s3))
         flag2++;
       else JOptionPane.showMessageDialog(null,"确认密码与新密码不同,请重新确认");
     
    
         
     
     s4="SELECT 密码 FROM 用户 WHERE 状态='登录'";
     ResultSet resultSet1=statement.executeQuery(s4);
     ResultSetMetaData metaData1=resultSet1.getMetaData();
     int numberOfColumns1=metaData1.getColumnCount();
     while(resultSet1.next())
       for(int i=1;i<=numberOfColumns1;i++)
          if(resultSet1.getObject(i).equals(s1))
          flag1++;
       
       if(flag1==0) JOptionPane.showMessageDialog(null,"原密码不正确，请重新输入");
     
       
       
       if(flag1==1&&flag2==1)
     {
        String s="UPDATE 用户 SET 密码='"+s2+"' WHERE 状态='登录'";
        int sta=0;
        sta=statement.executeUpdate(s);
        if(sta==1)
            JOptionPane.showMessageDialog(null," 密码修改成功！");
    }
    }
    
   catch(SQLException sqlException){
        JOptionPane.showMessageDialog(null,sqlException.getMessage(),"Database Error",JOptionPane.ERROR_MESSAGE);
        System.exit(1);}

   catch(ClassNotFoundException classNotFound){
       JOptionPane.showMessageDialog(null,classNotFound.getMessage(),"Driver Not Found",JOptionPane.ERROR_MESSAGE);
        System.exit(1); }// TODO add your handling code here:

    }//GEN-LAST:event_jButton1ActionPerformed
    
    
    // Variables declaration - do not modify//GEN-BEGIN:variables
    private javax.swing.JButton jButton1;
    private javax.swing.JButton jButton2;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel2;
    private javax.swing.JLabel jLabel3;
    private javax.swing.JPasswordField jPasswordField1;
    private javax.swing.JPasswordField jPasswordField2;
    private javax.swing.JPasswordField jPasswordField3;
    // End of variables declaration//GEN-END:variables
    
}