Java实战之用Spring开发条形码和验证码

Java实战之用Spring开发条形码和验证码

一、条形码

代码如下：

import javax.swing.*;

import java.awt.*;

import java.awt.image.BufferedImage;

import java.util.Random;

public class Text extends JFrame {

private static final int WIDTH=300;//窗口的宽度

private static final int HEIGHT=400;//窗口的高度

private static final int LINES=120;//内部的线条数量

private static final int SPACE=10;//线条与线条之间的间距

private static JFrame jFrame=null;

public static void main(String[] args) {

initialize();

}

private static void initialize(){//初始化窗口

jFrame=new JFrame("条形码");

jFrame.setSize(WIDTH,HEIGHT);

jFrame.setLayout(null);

JLabel jLabel=new JLabel();

jLabel.setBounds(0,0,WIDTH,80);

jLabel.setIcon(new ImageIcon(setCode()));

jFrame.add(jLabel);

jFrame.setVisible(true);

jFrame.setLocationRelativeTo(null);

jFrame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

}

private static BufferedImage setCode() {

Random random = new Random();

BufferedImage bufferedImage = new BufferedImage(WIDTH, 80, BufferedImage.TYPE_INT_RGB);//创建一个图片画板

Graphics g = bufferedImage.getGraphics();//得到画笔

g.setColor(Color.white);//设置画笔颜色

g.fillRect(0, 0, WIDTH, 80);//规定画笔的一个范围

http:// g.setColor(Color.black);//这个是设置线条的颜色

for(int i=0;i

int row=random.nextInt(WIDTH)+SPACE;

g.drawLine(row,0,row,HEIGHT);

}

return bufferedImage;

}

}

效果如下：

二、验证码

代码如下：

import javax.swing.*;

import java.awt.*;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.MouseAdapter;

import java.awt.event.MouseEvent;

import java.awt.image.BufferedImage;

import java.util.Random;

public class Text extends JFrame{

private final static char[] words=("1234567890" +

"abcdefghijklmnopqrstuvwxyz" +

"ABCDEFGHIJKLMNOPQRSTUVWXYZ").toCharArray();

private final static int WORDLENGTH=4;

private final static int WIDTH=200;

private final static int HEIGHT=100;

private final static int STAR=200;

private static Text t=null;

private static TextField textFile=null;

private static Object[] obj=null;

private static Object[] drawCode(){

BufferedImage bufferedImage=new BufferedImage(WIDTH,HEIGHT,BufferedImage.TYPE_INT_RGB);

Graphics g=bufferedImage.getGraphics();

char[] selectWord=new char[4];

g.setColor(Color.LIGHT_GRAY);

g.fillRect(0,0,WIDTH,HEIGHT);

Random random=new Random();

for(int i=0;i

int n=random.nextInt(words.length);

selectWord[i]=words[i];

g.setFont(new Font("微软雅黑",0,random.nextInt(20)+40));

g.setColor(setRandomColor());

g.drawString(words[n]+"",i*WIDTH/WORDLENGTH,HEIGHT/2+10);

}

for(int i=0;i

g.setColor(setRandomColor());

g.setFont(new Font("楷书",0,40));

g.drawOval(random.nextInt(WIDTH),random.nextInt(HEIGHT),3, 3);

}

return new Object[]{selectWord,bufferedImage};

}

private static Color setRandomColor(){

Random colorRandom=new Random();

return new Color(colorRandom.nextInt(256),colorRandom.nextInt(256),colorRandom.nextInt(256));

}

public static void main(String[] args) {

t=new Text();

t.setLocationRelativeTo(null);

t.setSize(WIDTH,200);

t.setLayout(null);

t.add(setLabel());

t.add(setButton());

t.add(setTextField());

t.setVisible(true);

t.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

}

private static JLabel setLabel(){

JLabel jLabel=new JLabel();

obj=drawCode();

jLabel.setIcon(new ImageIcon((BufferedImage)obj[1]));

jLabel.setBounds(0,0,WIDTH,HEIGHT);

jLabel.addMouseListener(new MouseAdapter() {

@Override

public void mouseClicked(MouseEvent e) {

jLabel.setIcon(new ImageIcon((BufferedImage)drawCode()[1]));

}

});

return jLabel;

}

private static TextField setTextField(){

textFile=new TextField();

textFile.setFont(new Font("华文行楷",0,20));

textFile.setBounds(5,120, 100,30);

return textFile;

}

private static JButton setButton(){

JButton jButton=new JButton("检测");

jButton.setBounds(110,120, 70,30);

jButton.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

Shttp://ystem.out.println(textFile.getText().equals(obj[0]));

}

});

return jButton;

}

}

效果如下：

验证码这里是因为没有设置好字符编码的原因，让中文字符无法在窗口内不显示

验证码就比条形码难以点点，但是基本的编写思想都是差不多的，

但最难的还是在二维码上，编写二维码就需要要求编写者的算法能力足够的扎实，而且还要有足够丰富的Java功底

int row=random.nextInt(WIDTH)+SPACE;

g.drawLine(row,0,row,HEIGHT);

}

return bufferedImage;

}

}

效果如下：

二、验证码

代码如下：

import javax.swing.*;

import java.awt.*;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.MouseAdapter;

import java.awt.event.MouseEvent;

import java.awt.image.BufferedImage;

import java.util.Random;

public class Text extends JFrame{

private final static char[] words=("1234567890" +

"abcdefghijklmnopqrstuvwxyz" +

"ABCDEFGHIJKLMNOPQRSTUVWXYZ").toCharArray();

private final static int WORDLENGTH=4;

private final static int WIDTH=200;

private final static int HEIGHT=100;

private final static int STAR=200;

private static Text t=null;

private static TextField textFile=null;

private static Object[] obj=null;

private static Object[] drawCode(){

BufferedImage bufferedImage=new BufferedImage(WIDTH,HEIGHT,BufferedImage.TYPE_INT_RGB);

Graphics g=bufferedImage.getGraphics();

char[] selectWord=new char[4];

g.setColor(Color.LIGHT_GRAY);

g.fillRect(0,0,WIDTH,HEIGHT);

Random random=new Random();

for(int i=0;i

int n=random.nextInt(words.length);

selectWord[i]=words[i];

g.setFont(new Font("微软雅黑",0,random.nextInt(20)+40));

g.setColor(setRandomColor());

g.drawString(words[n]+"",i*WIDTH/WORDLENGTH,HEIGHT/2+10);

}

for(int i=0;i

g.setColor(setRandomColor());

g.setFont(new Font("楷书",0,40));

g.drawOval(random.nextInt(WIDTH),random.nextInt(HEIGHT),3, 3);

}

return new Object[]{selectWord,bufferedImage};

}

private static Color setRandomColor(){

Random colorRandom=new Random();

return new Color(colorRandom.nextInt(256),colorRandom.nextInt(256),colorRandom.nextInt(256));

}

public static void main(String[] args) {

t=new Text();

t.setLocationRelativeTo(null);

t.setSize(WIDTH,200);

t.setLayout(null);

t.add(setLabel());

t.add(setButton());

t.add(setTextField());

t.setVisible(true);

t.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

}

private static JLabel setLabel(){

JLabel jLabel=new JLabel();

obj=drawCode();

jLabel.setIcon(new ImageIcon((BufferedImage)obj[1]));

jLabel.setBounds(0,0,WIDTH,HEIGHT);

jLabel.addMouseListener(new MouseAdapter() {

@Override

public void mouseClicked(MouseEvent e) {

jLabel.setIcon(new ImageIcon((BufferedImage)drawCode()[1]));

}

});

return jLabel;

}

private static TextField setTextField(){

textFile=new TextField();

textFile.setFont(new Font("华文行楷",0,20));

textFile.setBounds(5,120, 100,30);

return textFile;

}

private static JButton setButton(){

JButton jButton=new JButton("检测");

jButton.setBounds(110,120, 70,30);

jButton.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

Shttp://ystem.out.println(textFile.getText().equals(obj[0]));

}

});

return jButton;

}

}

效果如下：

验证码这里是因为没有设置好字符编码的原因，让中文字符无法在窗口内不显示

验证码就比条形码难以点点，但是基本的编写思想都是差不多的，

但最难的还是在二维码上，编写二维码就需要要求编写者的算法能力足够的扎实，而且还要有足够丰富的Java功底

int n=random.nextInt(words.length);

selectWord[i]=words[i];

g.setFont(new Font("微软雅黑",0,random.nextInt(20)+40));

g.setColor(setRandomColor());

g.drawString(words[n]+"",i*WIDTH/WORDLENGTH,HEIGHT/2+10);

}

for(int i=0;i

g.setColor(setRandomColor());

g.setFont(new Font("楷书",0,40));

g.drawOval(random.nextInt(WIDTH),random.nextInt(HEIGHT),3, 3);

}

return new Object[]{selectWord,bufferedImage};

}

private static Color setRandomColor(){

Random colorRandom=new Random();

return new Color(colorRandom.nextInt(256),colorRandom.nextInt(256),colorRandom.nextInt(256));

}

public static void main(String[] args) {

t=new Text();

t.setLocationRelativeTo(null);

t.setSize(WIDTH,200);

t.setLayout(null);

t.add(setLabel());

t.add(setButton());

t.add(setTextField());

t.setVisible(true);

t.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

}

private static JLabel setLabel(){

JLabel jLabel=new JLabel();

obj=drawCode();

jLabel.setIcon(new ImageIcon((BufferedImage)obj[1]));

jLabel.setBounds(0,0,WIDTH,HEIGHT);

jLabel.addMouseListener(new MouseAdapter() {

@Override

public void mouseClicked(MouseEvent e) {

jLabel.setIcon(new ImageIcon((BufferedImage)drawCode()[1]));

}

});

return jLabel;

}

private static TextField setTextField(){

textFile=new TextField();

textFile.setFont(new Font("华文行楷",0,20));

textFile.setBounds(5,120, 100,30);

return textFile;

}

private static JButton setButton(){

JButton jButton=new JButton("检测");

jButton.setBounds(110,120, 70,30);

jButton.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

Shttp://ystem.out.println(textFile.getText().equals(obj[0]));

}

});

return jButton;

}

}

效果如下：

验证码这里是因为没有设置好字符编码的原因，让中文字符无法在窗口内不显示

验证码就比条形码难以点点，但是基本的编写思想都是差不多的，

但最难的还是在二维码上，编写二维码就需要要求编写者的算法能力足够的扎实，而且还要有足够丰富的Java功底

g.setColor(setRandomColor());

g.setFont(new Font("楷书",0,40));

g.drawOval(random.nextInt(WIDTH),random.nextInt(HEIGHT),3, 3);

}

return new Object[]{selectWord,bufferedImage};

}

private static Color setRandomColor(){

Random colorRandom=new Random();

return new Color(colorRandom.nextInt(256),colorRandom.nextInt(256),colorRandom.nextInt(256));

}

public static void main(String[] args) {

t=new Text();

t.setLocationRelativeTo(null);

t.setSize(WIDTH,200);

t.setLayout(null);

t.add(setLabel());

t.add(setButton());

t.add(setTextField());

t.setVisible(true);

t.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

}

private static JLabel setLabel(){

JLabel jLabel=new JLabel();

obj=drawCode();

jLabel.setIcon(new ImageIcon((BufferedImage)obj[1]));

jLabel.setBounds(0,0,WIDTH,HEIGHT);

jLabel.addMouseListener(new MouseAdapter() {

@Override

public void mouseClicked(MouseEvent e) {

jLabel.setIcon(new ImageIcon((BufferedImage)drawCode()[1]));

}

});

return jLabel;

}

private static TextField setTextField(){

textFile=new TextField();

textFile.setFont(new Font("华文行楷",0,20));

textFile.setBounds(5,120, 100,30);

return textFile;

}

private static JButton setButton(){

JButton jButton=new JButton("检测");

jButton.setBounds(110,120, 70,30);

jButton.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

Shttp://ystem.out.println(textFile.getText().equals(obj[0]));

}

});

return jButton;

}

}

效果如下：

验证码这里是因为没有设置好字符编码的原因，让中文字符无法在窗口内不显示

验证码就比条形码难以点点，但是基本的编写思想都是差不多的，

但最难的还是在二维码上，编写二维码就需要要求编写者的算法能力足够的扎实，而且还要有足够丰富的Java功底

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