基于JAVA的口令认证系统

package algorithm; import java.awt.BorderLayout; import java.awt.Dimension; import java.awt.FlowLayout; import java.awt.GridLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.sql.DriverManager; import java.sql.PreparedStatement; import java.sql.ResultSet; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JOptionPane; import javax.swing.JPanel; import javax.swing.JPasswordField; import javax.swing.JTextField; import com.mysql.jdbc.Connection; import com.mysql.jdbc.Statement; //import java.util.*; //import java.io.*; public class Algorithm { /** * @param args */ public static void main(String[] args) { new Algorithm().init(); } JFrame f1=new JFrame("注册窗口"); JFrame f=new JFrame("登陆窗口"); JFrame f2=new JFrame("用户窗口"); JFrame f3=new JFrame("修改窗口"); JTextField username=new JTextField(10); JTextField password=new JPasswordField(10); JTextField username1=new JTextField(10); JTextField password1=new JPasswordField(10); JTextField password2=new JPasswordField(10); JTextField Pwd=new JPasswordField(10); JTextField Pwd1=new JPasswordField(10); JTextField Pwd2=new JPasswordField(10); String dname=""; //声明Connection对象 Connection conn = null; // 驱动程序名 String dbdriver = "com.mysql.jdbc.Driver"; // URL指向要访问的数据库名 String dburl = "jdbc:mysql://localhost:3306/kami"; // MySQL配置时的用户名 String dbuser = "root"; // MySQL配置时的密码 String dbpwd = "123456"; public void init() { //f.setBounds(450,150,400,400); JPanel p=new JPanel(); p.setPreferredSize(new Dimension(200, 60)); p.setLayout(new GridLayout(2,2,1,10)); p.add(new JLabel("用户名: ")); p.add(username); p.add(new JLabel("口令: ")); p.add(password); JPanel p1=new JPanel(new FlowLayout(FlowLayout.CENTER,100,5)); p1.setPreferredSize(new Dimension(10,80)); JButton ok=new JButton("确认"); JButton register=new JButton("注册"); ok.addActionListener(new Ok()); register.addActionListener(new register()); p1.add(ok); p1.add(register); f.add(p); f.add(p1,BorderLayout.SOUTH); f.pack(); f.setVisible(true); JPanel panel=new JPanel(); panel.setPreferredSize(new Dimension(200, 80)); panel.setLayout(new GridLayout(3,2,1,10)); panel.add(new JLabel("请输入用户名:")); panel.add(username1); panel.add(new JLabel("请输入口令:")); panel.add(password1); panel.add(new JLabel("确认口令:")); panel.add(password2); JPanel panel1=new JPanel(new FlowLayout(FlowLayout.CENTER,100,5)); panel1.setPreferredSize(new Dimension(10,80)); JButton reg=new JButton("注册"); reg.addActionListener(new reg()); JButton back=new JButton("返回"); back.addActionListener(new back()); panel1.add(reg); panel1.add(back); f1.add(panel); f1.add(panel1,BorderLayout.SOUTH); f1.pack(); JPanel jp=new JPanel(); jp.setPreferredSize(new Dimension(200,150)); jp.setLayout(new FlowLayout(FlowLayout.CENTER,100,20)); jp.add(new JLabel("尊敬 的用户，欢迎使用本系统")); JButton modify=new JButton("修改"); JButton end=new JButton("退出"); modify.addActionListener(new modify()); end.addActionListener(new end()); jp.add(modify); jp.add(end); f2.add(jp); f2.pack(); //f2.setVisible(true); JPanel jpanel=new JPanel(); jpanel.setPreferredSize(new Dimension(250,90)); jpanel.setLayout(new GridLayout(3,2,1,10)); jpanel.add(new JLabel("请输入原口令:")); jpanel.add(Pwd); jpanel.add(new JLabel("请输入修改的口令:")); jpanel.add(Pwd1); jpanel.add(new JLabel("确认修改的口令:")); jpanel.add(Pwd2); JPanel jpanel1=new JPanel(new FlowLayout(FlowLayout.CENTER,100,8)); jpanel1.setPreferredSize(new Dimension(10,80)); JButton yes=new JButton("确定"); JButton ret=new JButton("返回"); yes.addActionListener(new yes()); ret.addActionListener(new ret()); jpanel1.add(yes); jpanel1.add(ret); f3.add(jpanel); f3.add(jpanel1,BorderLayout.SOUTH); f3.pack(); //f3.setVisible(true); } class Ok implements ActionListener { public void actionPerformed(ActionEvent e) { String Dname=username.getText(); String Dpw=password.getText(); String Ds=""; try { // 加载驱动程序 Class.forName(dbdriver); // 连续数据库 conn = (Connection) DriverManager.getConnection(dburl,dbuser,dbpwd); /* if(!conn.isClosed()) System.out.println("Succeeded connecting to the Database!");*/ // statement用来执行SQL语句 String sql="select username,salt,s from password_info where username='"+Dname+"'"; Statement st = (Statement) conn.createStatement(); ResultSet rs =st.executeQuery(sql); String u=""; String Dsalt=""; String s=""; while(rs.next()) { u=rs.getString("username");Dsalt=rs.getString("salt");s=rs.getString("s");} if(u.equals(Dname)) { Ds=Agen.Agent(Dpw, Dsalt); if(Ds.equals(s)) { JOptionPane.showMessageDialog(null,"登陆成功！"); f.dispose(); f2.setVisible(true); username.setText(null); password.setText(null); dname=Dname; } else { JOptionPane.showMessageDialog(null, "口令错误！",null,JOptionPane.WARNING_MESSAGE); password.setText(null); password.requestFocus(); } } else { JOptionPane.showMessageDialog(null, "用户名不存在,请注册！",null,JOptionPane.WARNING_MESSAGE); username.setText(null); username.requestFocus(); } }catch (Exception e2) { System.err.println("jdbc连接异常！"); e2.printStackTrace(); }finally{ try { if(conn != null){ conn.close(); } }catch (Exception e3) { e3.printStackTrace(); } } } } class register implements ActionListener { public void actionPerformed(ActionEvent e) { f.dispose(); username.setText(null); password.setText(null); f1.setVisible(true); } } class reg implements ActionListener { public void actionPerformed(ActionEvent e) { String Dname=username1.getText(); String b=password1.getText(); String c=password2.getText(); String Dsalt=Agen.Arandom(); String Ds=""; try { Ds = Agen.Agent(b, Dsalt); } catch (Exception e4) { e4.printStackTrace(); } if(Dname.equals("")) { JOptionPane.showMessageDialog(null, "用户名不可为空！",null,JOptionPane.WARNING_MESSAGE); return ; } else { if(!b.equals(c)&&b.equals("")) { JOptionPane.showMessageDialog(null, "两次口令不一致！",null,JOptionPane.WARNING_MESSAGE); password2.setText(null); password2.requestFocus(); } else { //声明Connection对象 Connection conn = null; try { // 加载驱动程序 Class.forName(dbdriver); // 连续数据库 conn = (Connection) DriverManager.getConnection(dburl,dbuser,dbpwd); /* if(!conn.isClosed()) System.out.println("Succeeded connecting to the Database!");*/ // statement用来执行SQL语句 String sql="select username from password_info where username='"+Dname+"'"; Statement st = (Statement) conn.crea