一.登录界面

1.程序代码

1 import java.awt.*;//导入awt包

2 import javax.swing.*;//导入swing包

3 import java.awt.event.ActionListener;//导入awt包中的监听器事件包

4 import java.awt.event.ActionEvent;//导入awt包中的ActionEvent事件包

5

6 public class EnterScreen extends JFrame {

7 static int s=0;

8 public EnterScreen() {

9 Yanzhencode vcode = new Yanzhencode();

10 setSize(300,290);//设计窗体的大小

11 setTitle("请登录");

12 setBackground(Color.RED);//设置背景颜色

13 JLabel a=new JLabel("登录名"); //实例化JLabel对象

14 JLabel b=new JLabel("密 码");

15 JLabel g=new JLabel("忘记用户名/密码？");

16 JLabel h=new JLabel("验证码");

17 g.setForeground(Color.BLUE);

18 JTextField c=new JTextField(15);//实例化用户名文本框

19 JPasswordField d=new JPasswordField(15);//实例化密码框

20 JTextField k=new JTextField(4);//实例化验证码框

21 d.setEchoChar('*');//将输入密码框中的密码以*显示出来

22 JButton e=new JButton("登录");

23 JButton f=new JButton("快速注册");

24 e.setBackground(Color.YELLOW);//设置登录按钮字体颜色

25 f.setForeground(Color.GRAY);//设置快速登录按钮填充色

26 setVisible(true);//使窗体可视化

27 Container m=getContentPane();//获取一个容器

28 getContentPane().setBackground(Color.WHITE);//设置窗体填充色

29 // 将用户名、密码的Jlabel和用户名JTextField文本框、密码JPasswordField密码框以及确定JButton、快速注册JButton添加到container容器里面 //

30 m.add(a);

31 m.add(b);

32 m.add(c);

33 m.add(d);

34 m.add(e);

35 m.add(f);

36 m.add(g);

37 m.add(h);

38 m.add(k);

39 m.add(vcode);

40 setBounds(300,300,300,300);//设置窗体的长宽各为300、300 让其显示在左上方的300、300处

41 m.setLayout(null);

42 // a、b、c、d、e、f显示在container容器中的位置坐标

43 a.setBounds(10,40,50,18);

44 b.setBounds(10,80,50,18);

45 c.setBounds(60,40,130,18);

46 d.setBounds(60,80,130,18);

47 h.setBounds(10,120,50,18);

48 k.setBounds(60,120,80,18);

49 e.setBounds(90,180,100,30);

50 f.setBounds(90,220,100,30);

51 g.setBounds(190,75,100,30);

52 vcode.setBounds(140,110,80,30);

53 e.addActionListener(new ActionListener() {//对登录按钮添加监听事件

54

55 @SuppressWarnings("deprecation")

56 @Override

57 public void actionPerformed(ActionEvent arg0) {

58 // TODO Auto-generated method stub

59

60 if(c.getText().trim().equals("xiaoyang")&&new String(d.getPassword()).equals("123456")&&s==1) {//equals函数进行用户名和密码的匹配

61 JOptionPane.showMessageDialog(null,"登录成功");

62

63 new NewFrame();//进入到NewFrame这个窗体中

64 }else if(c.getText().trim().equals("xiaoyang")&&new String(d.getPassword()).equals("123456")&&s==0) {

65 JOptionPane.showMessageDialog(null,"验证码输入错误");

66 }else {

67 JOptionPane.showMessageDialog(null, "登录失败,用户名、密码或验证码输入错误");

68 }

69 }

70

71 });

72 f.addActionListener(new ActionListener(){//对快速注册按钮添加监听事件

73 @SuppressWarnings("deprecation")

74 @Override

75 public void actionPerformed(ActionEvent arg0) {

76 // TODO Auto-generated method stub

77 new zhuce();//进入都到zhuce窗体中

78 }

79

80 });

81 //判断输入验证码是否正确

82 if(k.getText()== null) {

83 s=0;

84 }else if(vcode.getCode() == null) {

85 s=1;

86 }else if(vcode.getCode() .equals(k.getText())) {

87 s=1;

88 }else {

89 s=0;

90 }

91 }

92

93 public static void main(String[] args) {

94 new EnterScreen();

95

96 }

97

98 }

2.登录界面截图

二.快速注册界面

1.程序代码

1 import java.awt.*;

2 import javax.swing.*;

3 import java.awt.event.ActionListener;

4 import java.awt.event.ActionEvent;

5 import java.sql.*;

6 import java.awt.Container;

7

8 import javax.swing.JButton;

9 import javax.swing.JLabel;

10 import javax.swing.JPasswordField;

11 import javax.swing.JTextField;

12

13 public class zhuce extends JFrame {

14 public zhuce() {

15 setSize(300,250);//设计窗体的大小

16 JLabel a=new JLabel("用户名"); //实例化JLabel对象

17 JLabel b=new JLabel("密 码");

18 JLabel h=new JLabel("再次确认密码");

19 JTextField c=new JTextField(15);//实例化用户名文本框

20 JPasswordField d=new JPasswordField(15);//实例化密码文本框

21 JPasswordField hd=new JPasswordField(15);//实例化密码文本框

22 d.setEchoChar('*');//设置密码隐藏制度

23 JButton e=new JButton("确定");

24 JButton f=new JButton("重置");

25 JButton g=new JButton("返回");

26 setVisible(true);

27 //获取一个容器

28 Container m=getContentPane();

29 // 将用户名、密码的Jlabel和用户名JTextField文本框、密码JPasswordField密码框以及确定JButton、快速注册JButton添加到container容器里面

30 m.add(a);

31 m.add(b);

32 m.add(h);

33 m.add(hd);

34 m.add(c);

35 m.add(d);

36 m.add(e);

37 m.add(f);

38 m.add(g);

39 //设置窗体的长宽各为300、250 让其显示在左上方的300、250处

40 setBounds(300,250,300,250);

41 m.setLayout(null);

42 // a、b、c、d、e、f显示在container容器中的位置坐标

43 a.setBounds(10,40,50,18);

44 b.setBounds(10,80,50,18);

45 h.setBounds(5,120,80,18);

46 c.setBounds(60,40,200,18);

47 d.setBounds(60,80,200,18);

48 hd.setBounds(90,120,180,18);

49 e.setBounds(110,160,60,30);

50 f.setBounds(30,160,60,30);

51 g.setBounds(190,160,60,30);

52 g.addActionListener(new ActionListener() {//对返回按钮添加监听事件

53 @SuppressWarnings("deprecation")

54 @Override

55 public void actionPerformed(ActionEvent arg0) {

56 // TODO Auto-generated method stub

57 new EnterScreen();

58

59 }

60 });

61 f.addActionListener(new ActionListener() {//对确认按钮添加监听事件

62 @SuppressWarnings("deprecation")

63 @Override

64 public void actionPerformed(ActionEvent arg0) {

65 // TODO Auto-generated method stub

66 new EnterScreen();

67

68 }

69 });

70 e.addActionListener(new ActionListener() {//对确认按钮添加监听事件

71 @SuppressWarnings("deprecation")

72 @Override

73 public void actionPerformed(ActionEvent arg0) {

74 // TODO Auto-generated method stub

75 new zhuce();

76

77 }

78 });

79 }

80 }

2.快速注册界面截图

三.验证码部分

1.验证码程序

1 import java.awt.Color;

2 import java.awt.Dimension;

3 import java.awt.Font;

4 import java.awt.FontMetrics;

5 import java.awt.Graphics;

6 import java.awt.Graphics2D;

7 import java.awt.event.MouseEvent;

8 import java.awt.event.MouseListener;

9

10 import java.util.Random;

11

12 import javax.swing.JComponent;

13

14 public class Yanzhencode extends JComponent implements MouseListener {

15

16 private String codes; //自动生成的验证码

17

18 private int width, height = 40; //设置验证码高度、宽度

19

20 private int codesLength = 4; //设置代码长度

21

22 private Random random = new Random(); //生成数字的方法

23

24 public Yanzhencode() {

25 width = this.codesLength * 16 + (this.codesLength - 1) * 10; //根据验证码长度设置宽度

26 setPreferredSize(new Dimension(width, height)); //设置背景大小

27 setSize(width, height); //设置验证码长度和宽度

28 this.addMouseListener(this);

29 setToolTipText("点击可更换验证码");

30 }

31 //得到生成的验证码

32 public int getCodesLength() {

33 return codesLength;

34 }

35

36

37 //设置验证码的长度

38 public void setCodesLength(int codeLength) {

39 if(codesLength < 4) {

40 this.codesLength = 4;

41 } else {

42 this.codesLength = codeLength;

43 }

44

45 }

46

47 public String getCode() {

48 return codes;

49 }

50

51

52 //让验证码产生随机的颜色

53 public Color getRandColor(int min, int max) {

54

55 if (min > 255)

56 min = 255;

57 if (max > 255)

58 max = 255;

59 int red = random.nextInt(max - min) + min;

60 int green = random.nextInt(max - min) + min;

61 int blue = random.nextInt(max - min) + min;

62 return new Color(red, green, blue);

63 }

64 // 设置验证码具体的数字或字母是什么

65 protected String generateCode() {

66 char[] codes = new char[this.codesLength];

67 for (int i = 0, len = codes.length; i < len; i++) {

68 if (random.nextBoolean()) {

69 codes[i] = (char) (random.nextInt(10) + 48);

70 } else {

71 codes[i] = (char) (random.nextInt(26) + 97);

72 }

73 }

74 this.codes = new String(codes);

75 return this.codes;

76 }

77

78

79 @Override

80 protected void paintComponent(Graphics g) {

81 super.paintComponent(g);

82 if(this.codes == null || this.codes.length() != this.codesLength) { //判断生成的验证码是否为空或超出长度

83 this.codes = generateCode();

84 }

85 width = this.codesLength * 16 + (this.codesLength - 1) * 10;

86 super.setSize(width, height); //接口使用，验证码字体大小

87 super.setPreferredSize(new Dimension(width, height));//接口使用，验证码背景大小

88 Font mFont = new Font("Arial", Font.BOLD | Font.ITALIC, 25); //设置字体和字体大小

89 g.setFont(mFont); //设置对象

90 //绘制出验证码的背景的矩形轮廓

91 Graphics2D g2d = (Graphics2D) g;

92 g2d.setColor(getRandColor(200, 250));

93 g2d.fillRect(0, 0, width, height);

94 g2d.setColor(getRandColor(180, 200));

95 g2d.drawRect(0, 0, width - 1, height - 1);

96 //绘制出验证码背景的线

97 int i = 0, len = 150;

98 for (; i < len; i++) {

99 int x = random.nextInt(width - 1);

100 int y = random.nextInt(height - 1);

101 int x1 = random.nextInt(width - 10) + 10;

102 int y1 = random.nextInt(height - 4) + 4;

103 g2d.setColor(getRandColor(180, 200));

104 g2d.drawLine(x, y, x1, y1);

105 }

106

107

108

109 //绘制出验证码的具体字母

110 i = 0; len = this.codesLength;

111 FontMetrics fm = g2d.getFontMetrics();

112 int base = (height - fm.getHeight())/2 + fm.getAscent();

113 for(;i

114 int b = random.nextBoolean() ? 1 : -1;

115 g2d.rotate(random.nextInt(10)*0.01*b);

116 g2d.setColor(getRandColor(20, 130));

117 g2d.drawString(codes.charAt(i)+"", 16 * i + 10, base);

118 }

119 }

120

121 //下一个验证码

122 public void nextCode() {

123 generateCode();

124 repaint();

125 }

126

127 @Override

128 public void mouseClicked(MouseEvent e) {

129

130 nextCode();

131 }

132

133 @Override

134 public void mousePressed(MouseEvent e) {

135 // TODO Auto-generated method stub

136

137 }

138

139 @Override

140 public void mouseReleased(MouseEvent e) {

141 // TODO Auto-generated method stub

142

143 }

144

145 @Override

146 public void mouseEntered(MouseEvent e) {

147 // TODO Auto-generated method stub

148

149 }

150

151 @Override

152 public void mouseExited(MouseEvent e) {

153 // TODO Auto-generated method stub

154

155 }

156 }

2.验证码实现效果

点击验证码图片后，验证码会更换