JFrame美化的大致思路：先将JFrame去除默认美化效果，实现JWindow效果，然后再JWindow基础上对窗体的各项内容自定义设置与美化，大多用到插入背景图片、添加各种鼠标事件、弹窗与输入框等圆角等各种美化；
1、Login实体类代码：
package com; import java.awt.Color; import java.awt.EventQueue; import java.awt.Font; import java.awt.Image; import java.awt.geom.RoundRectangle2D; import java.io.File; import javax.swing.ImageIcon; import javax.swing.JFrame; import javax.swing.JLayeredPane; import javax.swing.JPanel; import javax.swing.JRootPane; import javax.swing.JLabel; import com.alibaba.fastjson.JSON; import com.model.Message; import com.model.User; import com.sun.awt.AWTUtilities; import com.util.FileUtils; import com.util.MyButton; import com.util.MyLineBorder; import com.util.VerifyCodeUtils; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; import javax.swing.JTextField; import javax.swing.border.MatteBorder; import javax.swing.JPasswordField; import java.awt.event.FocusAdapter; import java.awt.event.FocusEvent; /** * 用户登录窗体（按照设计图片效果制作） * @author admin * */ public class Login1{ private JFrame frame;//窗体 private JTextField userNameField;//用户名输入框 private JPasswordField passwordField;//密码输入框 private JTextField verifyCodeField;//验证码输入框 private String verifyCode;//验证码图片中的验证码值 /** * Launch the application. */ public static void main(String[] args) { EventQueue.invokeLater(new Runnable() { public void run() { try { Login1 window = new Login1(); window.frame.setVisible(true); } catch (Exception e) { e.printStackTrace(); } } }); } /** * Create the application. */ public Login1() { initialize(); } /** * Initialize the contents of the frame. */ private void initialize() { //将存储验证码文件夹下的所有验证码图片删除 FileUtils.deleteAllFiles("./verifyCodeImg"); //自定义圆角输入框边界线 MyLineBorder myLineBorder = new MyLineBorder(new Color(192, 192, 192), 1 , true); //只显示输入框的下边框 MatteBorder bottomBorder = new MatteBorder(0, 0, 1, 0, new Color(192, 192, 192)); //设置JFrame禁用本地外观，使用下面自定义设置的外观； JFrame.setDefaultLookAndFeelDecorated(true); frame = new JFrame(); frame.setBounds(0, 0, 300, 490); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.getContentPane().setLayout(null); /** * 对窗体进行基本设置 */ //设置窗体在计算机窗口的中心部位显示 frame.setLocationRelativeTo(frame.getOwner()); // 去掉窗口的装饰 frame.setUndecorated(true); //采用指定的窗口装饰风格 frame.getRootPane().setWindowDecorationStyle(JRootPane.NONE); //设置窗体圆角，最后两个参数分别为圆角的宽度、高度数值，一般这两个数值都是一样的 AWTUtilities.setWindowShape(frame, new RoundRectangle2D.Double(0.0D, 0.0D, frame.getWidth(), frame.getHeight(), 20.0D, 20.0D)); //设置背景颜色，记住一定要修改frame.getContentPane()的颜色，因为我们看到的都是这个的颜色而并不是frame的颜色 frame.getContentPane().setBackground(Color.white); /** * 插入顶部非凡汽车背景图片 */ //创建具有分层的JLayeredPane JLayeredPane layeredPane = new JLayeredPane(); layeredPane.setBounds(0, -5, 300, 200); frame.getContentPane().add(layeredPane); // 创建图片对象 ImageIcon img = new ImageIcon(Login1.class.getResource("/images/dingbu.jpg")); //设置图片在窗体中显示的宽度、高度 img.setImage(img.getImage().getScaledInstance(300, 200,Image.SCALE_DEFAULT)); JPanel panel = new JPanel(); panel.setBounds(0, -5, 300, 200); layeredPane.add(panel, JLayeredPane.DEFAULT_LAYER); JLabel lblNewLabel = new JLabel(""); panel.add(lblNewLabel); lblNewLabel.setIcon(img); /** * 插入窗体关闭的背景图片及功能 */ // 创建图片对象 ImageIcon closeImg = new ImageIcon(Login1.class.getResource("/images/close.png")); //设置图片在窗体中显示的宽度、高度 closeImg.setImage(closeImg.getImage().getScaledInstance(31, 31,Image.SCALE_DEFAULT)); JPanel closePanel = new JPanel(); closePanel.setBounds(269, -5, 31, 31); layeredPane.add(closePanel,JLayeredPane.MODAL_LAYER); JLabel closeLabel = new JLabel(""); closePanel.add(closeLabel); closeLabel.setIcon(closeImg); closeLabel.addMouseListener(new MouseAdapter() { //鼠标点击关闭图片，实现关闭窗体的功能 @Override public void mouseClicked(MouseEvent e) { //dispose(); System.exit(0);//使用dispose();也可以关闭只是不是真正的关闭 } //鼠标进入，换关闭的背景图片 @Override public void mouseEntered(MouseEvent e) { // 创建图片对象 ImageIcon closeImg1 = new ImageIcon(Login1.class.getResource("/images/mouse_close.png")); //设置图片在窗体中显示的宽度、高度 closeImg1.setImage(closeImg1.getImage().getScaledInstance(31, 31,Image.SCALE_DEFAULT)); closeLabel.setIcon(closeImg1); } //鼠标离开，换关闭的背景图片 @Override public void mouseExited(MouseEvent e) { // 创建图片对象 ImageIcon closeImg = new ImageIcon(Login1.class.getResource("/images/close.png")); //设置图片在窗体中显示的宽度、高度 closeImg.setImage(closeImg.getImage().getScaledInstance(31, 31,Image.SCALE_DEFAULT)); closeLabel.setIcon(closeImg); } }); /** * 插入窗体最小化的背景图片及功能 */ // 创建图片对象 ImageIcon minImg = new ImageIcon(Login1.class.getResource("/images/min.png")); //设置图片在窗体中显示的宽度、高度 minImg.setImage(minImg.getImage().getScaledInstance(31, 31,Image.SCALE_DEFAULT)); JPanel minPanel = new JPanel(); minPanel.setBounds(237, -5, 31, 31); layeredPane.add(minPanel,JLayeredPane.MODAL_LAYER); JLabel minLabel = new JLabel(""); minLabel.addMouseListener(new MouseAdapter() { //鼠标点击最小化图片，实现最小化窗体的功能 @Override public void mouseClicked(MouseEvent e) { frame.setExtendedState(JFrame.ICONIFIED);//最小化窗体 } //鼠标进入，换最小化的背景图片 @Override public void mouseEntered(MouseEvent e) { // 创建图片对象 ImageIcon minImg1 = new ImageIcon(Login1.class.getResource("/images/mouse_min.png")); //设置图片在窗体中显示的宽度、高度 minImg1.setImage(minImg1.getImage().getScaledInstance(31, 31,Image.SCALE_DEFAULT)); minLabel.setIcon(minImg1); } //鼠标离开，换最小化的背景图片 @Override public void mouseExited(MouseEvent e) { // 创建图片对象 ImageIcon minImg = new ImageIcon(Login1.class.getResource("/images/min.png")); //设置图片在窗体中显示的宽度、高度 minImg.setImage(minImg.getImage().getScaledInstance(31, 31,Image.SCALE_DEFAULT)); minLabel.setIcon(minImg); } }); minPanel.add(minLabel); minLabel.setIcon(minImg); /** * 插入用户名输入框前面的图片 */ // 创建图片对象 ImageIcon userNameImg = new ImageIcon(Login1.class.getResource("/images/user_name.png")); //设置图片在窗体中显示的宽度、高度 userNameImg.setImage(userNameImg.getImage().getScaledInstance(40, 40,Image.SCALE_DEFAULT)); JLabel userNameLabel = new JLabel(""); userNameLabel.setBounds(0, 220, 40, 40); userNameLabel.setIcon(userNameImg); //默认获取光标 userNameLabel.setFocusable(true); frame.getContentPane().add(userNameLabel); /** * 添加圆角的用户名输入框 */ userNameField = new JTextField(); userNameField.setBounds(50, 220, 235, 50); userNameField.setBorder(bottomBorder); userNameField.setText(" 用户名"); userNameField.setFont(new Font("微软雅黑", 0, 14)); userNameField.setForeground(Color.GRAY);//默认设置输入框中的文字颜色为灰色 userNameField.addFocusListener(new FocusAdapter() { //获取光标事件 @Override public void focusGained(FocusEvent e) { //获取焦点时，输入框中内容是“用户名”，那么去掉输入框中显示的内容； if("用户名".equals((userNameField.getText().trim()))){ userNameField.setText(""); userNameField.setForeground(Color.black);//设置颜色为黑色 } } //失去光标事件 @Override public void focusLost(FocusEvent e) { //失去焦点时，如果输入框中去掉空格后的字符串为空串则显示用户名 if("".equals((userNameField.getText().trim()))){ userNameField.setText(" 用户名"); userNameField.setFont(new Font("微软雅黑", 0, 14)); userNameField.setForeground(Color.GRAY);//默认设置输入框中的文字颜色为灰色 } } }); frame.getContentPane().add(userNameField); userNameField.setColumns(10); /** * 插入密码输入框前面的图片 */ // 创建图片对象 ImageIcon passwordImg = new ImageIcon(Login1.class.getResource("/images/password.png")); //设置图片在窗体中显示的宽度、高度 passwordImg.setImage(passwordImg.getImage().getScaledInstance(40, 40,Image.SCALE_DEFAULT)); JLabel passwordLabel = new JLabel(""); passwordLabel.setBounds(0, 280, 40, 40); passwordLabel.setIcon(passwordImg); frame.getContentPane().add(passwordLabel); /** * 添加圆角的密码输入框 */ passwordField = new JPasswordField(); passwordField.setBounds(50, 280, 235, 50); passwordField.setBorder(bottomBorder); passwordField.setText(" 密码"); passwordField.setFont(new Font("微软雅黑", 0, 14)); passwordField.setForeground(Color.GRAY);//默认设置输入框中的文字颜色为灰色 passwordField.setEchoChar((char)0);//显示密码输入框中内容 passwordField.addFocusListener(new FocusAdapter() { //获取光标事件 @Override public void focusGained(FocusEvent e) { //获取焦点时，输入框中内容是“用户名”，那么去掉输入框中显示的内容； if("密码".equals((passwordField.getText().trim()))){ passwordField.setText(""); passwordField.setEchoChar('*');//显示密码输入框中内容 passwordField.setForeground(Color.black);//设置颜色为黑色 } } //失去光标事件 @Override public void focusLost(FocusEvent e) { //失去焦点时，如果输入框中去掉空格后的字符串为空串则显示用户名 if("".equals((passwordField.getText().trim()))){ passwordField.setText(" 密码"); passwordField.setFont(new Font("微软雅黑", 0, 14)); passwordField.setForeground(Color.GRAY);//默认设置输入框中的文字颜色为灰色 passwordField.setEchoChar((char)0);//显示密码输入框中内容 } } }); frame.getContentPane().add(passwordField); /** * 插入验证码输入框前面的图片 */ // 创建图片对象 ImageIcon verifyCodeImg = new ImageIcon(Login1.class.getResource("/images/verify_code.png")); //设置图片在窗体中显示的宽度、高度 verifyCodeImg.setImage(verifyCodeImg.getImage().getScaledInstance(40, 40,Image.SCALE_DEFAULT)); JLabel verifyCodeLabel = new JLabel(""); verifyCodeLabel.setBounds(0, 340, 40, 40); verifyCodeLabel.setIcon(verifyCodeImg); frame.getContentPane().add(verifyCodeLabel); /** * 添加圆角的验证码输入框 */ verifyCodeField = new JTextField(); verifyCodeField.setBounds(50, 340, 135, 50); verifyCodeField.setBorder(bottomBorder); verifyCodeField.setText(" 验证码"); verifyCodeField.setFont(new Font("微软雅黑", 0, 14)); verifyCodeField.setForeground(Color.GRAY);//默认设置输入框中的文字颜色为灰色 verifyCodeField.addFocusListener(new FocusAdapter() { //获取光标事件 @Override public void focusGained(FocusEvent e) { //获取焦点时，输入框中内容是“用户名”，那么去掉输入框中显示的内容； if("验证码".equals((verifyCodeField.getText().trim()))){ verifyCodeField.setText(""); verifyCodeField.setForeground(Color.black);//设置颜色为黑色 } } //失去光标事件 @Override public void focusLost(FocusEvent e) { //失去焦点时，如果输入框中去掉空格后的字符串为空串则显示用户名 if("".equals((verifyCodeField.getText().trim()))){ verifyCodeField.setText(" 验证码"); verifyCodeField.setFont(new Font("微软雅黑", 0, 14)); verifyCodeField.setForeground(Color.GRAY);//默认设置输入框中的文字颜色为灰色 } } }); frame.getContentPane().add(verifyCodeField); verifyCodeField.setColumns(10); /** * 添加验证码图片 */ JLabel verifyCodeImgLabel = new JLabel(""); verifyCodeImgLabel.setBounds(190, 340, 95, 50); verifyCodeImgLabel.setBorder(myLineBorder); frame.getContentPane().add(verifyCodeImgLabel); //生成一张验证码图片 verifyCode = VerifyCodeUtils.createOneCodeImage(); //将刚生成的验证码图片显示在窗体中去 ImageIcon verifyCodeSourceImg = new ImageIcon("./verifyCodeImg/"+verifyCode+".jpg");// 创建图片对象 //设置图片在窗体中显示的宽度、高度 verifyCodeSourceImg.setImage(verifyCodeSourceImg.getImage().getScaledInstance(95, 50,Image.SCALE_DEFAULT)); verifyCodeImgLabel.setIcon(verifyCodeSourceImg); //点击验证码图片，换一个新的验证码图片 verifyCodeImgLabel.addMouseListener(new MouseAdapter() { @Override public void mouseClicked(MouseEvent e) { //删除上一次的验证码图片 File file = new File("./src/verifyCodeImg/"+verifyCode+".jpg"); if(file.exists()){ file.delete(); } //生成一张新的验证码图片 verifyCode = VerifyCodeUtils.createOneCodeImage(); ImageIcon verifyCodeSourceImg1 = new ImageIcon("./verifyCodeImg/"+verifyCode+".jpg"); verifyCodeSourceImg1.setImage(verifyCodeSourceImg1.getImage().getScaledInstance(95, 50,Image.SCALE_DEFAULT)); verifyCodeImgLabel.setIcon(verifyCodeSourceImg1); } }); /** * 添加提示性信息的JLabel */ JLabel reminderMessage = new JLabel("",JLabel.CENTER); reminderMessage.setBounds(15, 395, 270, 20); reminderMessage.setForeground(Color.red); reminderMessage.setFont(new Font("微软雅黑", 0, 12)); frame.getContentPane().add(reminderMessage); /** * 添加圆角的提交按钮 */ MyButton myButton = new MyButton("安全登录", 0); myButton.setBounds(15, 420, 270, 50); frame.getContentPane().add(myButton); //设置窗体可见 frame.setVisible(true); } }
2、工具类FileUtils代码：
package com.util; import java.io.File; /** * 对文件操作的工具类 * @author admin * */ public class FileUtils { /** * 删除指定文件夹下的所有文件，此文件夹内只有文件，没有任何文件夹 */ public static Boolean deleteAllFiles(String filePath){ Boolean result = false; File file = new File(filePath); File temp = null; if(file.exists()){ String [] tempList = file.list(); for (String string : tempList) { temp = new File(filePath+"/"+string); if(temp.isFile()){ temp.delete(); } } tempList = file.list(); if(tempList.length==0){ result = true; } } return result; } public static void main(String[] args) { Boolean result = FileUtils.deleteAllFiles("./verifyCodeImg"); System.out.println(result); } }
3、工具类MyButton代码：
package com.util; import java.awt.AlphaComposite; import java.awt.Color; import java.awt.Font; import java.awt.GradientPaint; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.Insets; import java.awt.RenderingHints; import java.awt.Shape; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; import java.awt.geom.RoundRectangle2D; import javax.swing.JButton; import javax.swing.JFrame; /** * 自定义带有圆角的按钮工具类 * @author admin * */ public class MyButton extends JButton { /* 决定圆角的弧度 */ public static int radius = 4; public static Color COLOR1, COLOR2; public static int pink = 3, ashen = 2, sky = 1, stone = 0; /* 粉红 */ public static Color pink1 = new Color(39, 121, 181); public static Color pink2 = new Color(39, 121, 181); /* 灰白 */ public static Color ashen1 = new Color(39, 121, 181); public static Color ashen2 = new Color(39, 121, 181); /* 深宝石蓝 */ public static Color stone1 = new Color(39, 121, 181); public static Color stone2 = new Color(39, 121, 181); /* 淡天蓝色 */ public static Color sky1 = new Color(39, 121, 181); public static Color sky2 = new Color(39, 121, 181); /* 光标进入按钮判断 */ private boolean hover; public MyButton() { this("", stone); } public MyButton(String name) { this(name, stone); } public MyButton(String name, int style) { super.setText(name); if (style == pink) { COLOR1 = pink1; COLOR2 = pink2; } if (style == ashen) { COLOR1 = ashen1; COLOR2 = ashen2; } if (style == stone) { COLOR1 = stone1; COLOR2 = stone2; } if (style == sky) { COLOR1 = sky1; COLOR2 = sky2; } paintcolor(COLOR1, COLOR2); } private void paintcolor(Color COLOR1, Color COLOR2) { setMargin(new Insets(0, 0, 0, 0)); setFont(new Font("微软雅黑", 0, 14)); setBorderPainted(false); setForeground(Color.white); setFocusPainted(false); setContentAreaFilled(false); } @Override protected void paintComponent(Graphics g) { Graphics2D g2d = (Graphics2D) g.create(); int height = getHeight(); int with = getWidth(); float tran = 0.9F; /*if (!hover) { 鼠标离开/进入时的透明度改变量 tran = 0.6F; }*/ g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); /* GradientPaint是颜色渐变类 */ GradientPaint p1; GradientPaint p2; if (getModel().isPressed()) { p1 = new GradientPaint(0, 0, new Color(0, 0, 0), 0, height, new Color(100, 100, 100), true); p2 = new GradientPaint(0, 1, new Color(0, 0, 0, 50), 0, height, new Color(255, 255, 255, 100), true); } else { p1 = new GradientPaint(0, 0, new Color(100, 100, 100), 0, height, new Color(0, 0, 0), true); p2 = new GradientPaint(0, 1, new Color(255, 255, 255, 100), 0, height, new Color(0, 0, 0, 50), true); } g2d.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, tran)); RoundRectangle2D.Float r2d = new RoundRectangle2D.Float(0, 0, with - 1, height - 1, radius, radius); // 最后两个参数数值越大，按钮越圆，以下同理 Shape clip = g2d.getClip(); g2d.clip(r2d); GradientPaint gp = new GradientPaint(0.0F, 0.0F, COLOR1, 0.0F, height / 2, COLOR2, true); g2d.setPaint(gp); g2d.fillRect(0, 0, with, height); g2d.setClip(clip); g2d.setPaint(p1); g2d.drawRoundRect(0, 0, with - 3, height - 3, radius, radius); g2d.setPaint(p2); g2d.drawRoundRect(1, 1, with - 3, height - 3, radius, radius); g2d.dispose(); super.paintComponent(g); } public static void main(String args[]) { JFrame frm = new JFrame(); MyButton but = new MyButton("圆角JButton", 0); frm.setLayout(null); frm.setBounds(800, 400, 500, 200); but.setBounds(30, 30, 200, 50); frm.add(but); frm.setDefaultCloseOperation(3); frm.setVisible(true); } }
4、工具类MyLineBorder代码：
package com.util; import java.awt.Color; import java.awt.Component; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.RenderingHints; import javax.swing.border.LineBorder; /** * 为创建圆角输入框自定义边框线条工具类 * @author admin * */ public class MyLineBorder extends LineBorder{ private static final long serialVersionUID = 1L; public MyLineBorder(Color color, int thickness, boolean roundedCorners) { super(color, thickness, roundedCorners); } public void paintBorder(Component c, Graphics g, int x, int y, int width, int height) { RenderingHints rh = new RenderingHints(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); Color oldColor = g.getColor(); Graphics2D g2 = (Graphics2D)g; int i; g2.setRenderingHints(rh); g2.setColor(lineColor); for(i = 0; i < thickness; i++) { if(!roundedCorners) g2.drawRect(x+i, y+i, width-i-i-1, height-i-i-1); else g2.drawRoundRect(x+i, y+i, width-i-i-1, height-i-i-1, 10, 10); //就是这一句 ，后两个参数控制圆角的大小 } g2.setColor(oldColor); } }
5、工具类VerifyCodeUtils代码：
package com.util; import java.awt.Color; import java.awt.Font; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.RenderingHints; import java.awt.geom.AffineTransform; import java.awt.image.BufferedImage; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.io.OutputStream; import java.util.Arrays; import java.util.Random; import javax.imageio.ImageIO; /** * 生成验证码图片的工具类 * @author admin * */ public class VerifyCodeUtils { // 使用到Algerian字体，系统里没有的话需要安装字体，字体只显示大写，去掉了1,0,i,o几个容易混淆的字符 public static final String VERIFY_CODES = "23456789ABCDEFGHJKLMNPQRSTUVWXYZ"; private static Random random = new Random(); /** * 使用系统默认字符源生成验证码 * * @param verifySize * 验证码长度 * @return */ public static String generateVerifyCode(int verifySize) { return generateVerifyCode(verifySize, VERIFY_CODES); } /** * 使用指定源生成验证码 * * @param verifySize * 验证码长度 * @param sources * 验证码字符源 * @return */ public static String generateVerifyCode(int verifySize, String sources) { if (sources == null || sources.length() == 0) { sources = VERIFY_CODES; } int codesLen = sources.length(); Random rand = new Random(System.currentTimeMillis()); StringBuilder verifyCode = new StringBuilder(verifySize); for (int i = 0; i < verifySize; i++) { verifyCode.append(sources.charAt(rand.nextInt(codesLen - 1))); } return verifyCode.toString(); } /** * 生成随机验证码文件,并返回验证码值 * * @param w * @param h * @param outputFile * @param verifySize * @return * @throws IOException */ public static String outputVerifyImage(int w, int h, File outputFile, int verifySize) throws IOException { String verifyCode = generateVerifyCode(verifySize); outputImage(w, h, outputFile, verifyCode); return verifyCode; } /** * 输出随机验证码图片流,并返回验证码值 * * @param w * @param h * @param os * @param verifySize * @return * @throws IOException */ public static String outputVerifyImage(int w, int h, OutputStream os, int verifySize) throws IOException { String verifyCode = generateVerifyCode(verifySize); outputImage(w, h, os, verifyCode); return verifyCode; } /** * 生成指定验证码图像文件 * * @param w * @param h * @param outputFile * @param code * @throws IOException */ public static void outputImage(int w, int h, File outputFile, String code) throws IOException { if (outputFile == null) { return; } File dir = outputFile.getParentFile(); if (!dir.exists()) { dir.mkdirs(); } try { outputFile.createNewFile(); FileOutputStream fos = new FileOutputStream(outputFile); outputImage(w, h, fos, code); fos.close(); } catch (IOException e) { throw e; } } /** * 输出指定验证码图片流 * * @param w * @param h * @param os * @param code * @throws IOException */ public static void outputImage(int w, int h, OutputStream os, String code) throws IOException { int verifySize = code.length(); BufferedImage image = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB); Random rand = new Random(); Graphics2D g2 = image.createGraphics(); g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); Color[] colors = new Color[5]; Color[] colorSpaces = new Color[] { Color.WHITE, Color.CYAN, Color.GRAY, Color.LIGHT_GRAY, Color.MAGENTA, Color.ORANGE, Color.PINK, Color.YELLOW }; float[] fractions = new float[colors.length]; for (int i = 0; i < colors.length; i++) { colors[i] = colorSpaces[rand.nextInt(colorSpaces.length)]; fractions[i] = rand.nextFloat(); } Arrays.sort(fractions); g2.setColor(Color.GRAY);// 设置边框色 g2.fillRect(0, 0, w, h); Color c = getRandColor(200, 250); g2.setColor(c);// 设置背景色 g2.fillRect(0, 2, w, h - 4); // 绘制干扰线 Random random = new Random(); g2.setColor(getRandColor(160, 200));// 设置线条的颜色 for (int i = 0; i < 20; i++) { int x = random.nextInt(w - 1); int y = random.nextInt(h - 1); int xl = random.nextInt(6) + 1; int yl = random.nextInt(12) + 1; g2.drawLine(x, y, x + xl + 40, y + yl + 20); } // 添加噪点 float yawpRate = 0.05f;// 噪声率 int area = (int) (yawpRate * w * h); for (int i = 0; i < area; i++) { int x = random.nextInt(w); int y = random.nextInt(h); int rgb = getRandomIntColor(); image.setRGB(x, y, rgb); } shear(g2, w, h, c);// 使图片扭曲 g2.setColor(getRandColor(100, 160)); int fontSize = h - 4; Font font = new Font("Algerian", Font.ITALIC, fontSize); g2.setFont(font); char[] chars = code.toCharArray(); for (int i = 0; i < verifySize; i++) { AffineTransform affine = new AffineTransform(); affine.setToRotation(Math.PI / 4 * rand.nextDouble() * (rand.nextBoolean() ? 1 : -1), (w / verifySize) * i + fontSize / 2, h / 2); g2.setTransform(affine); g2.drawChars(chars, i, 1, ((w - 10) / verifySize) * i + 5, h / 2 + fontSize / 2 - 10); } g2.dispose(); ImageIO.write(image, "jpg", os); } private static Color getRandColor(int fc, int bc) { if (fc > 255) fc = 255; if (bc > 255) bc = 255; int r = fc + random.nextInt(bc - fc); int g = fc + random.nextInt(bc - fc); int b = fc + random.nextInt(bc - fc); return new Color(r, g, b); } private static int getRandomIntColor() { int[] rgb = getRandomRgb(); int color = 0; for (int c : rgb) { color = color << 8; color = color | c; } return color; } private static int[] getRandomRgb() { int[] rgb = new int[3]; for (int i = 0; i < 3; i++) { rgb[i] = random.nextInt(255); } return rgb; } private static void shear(Graphics g, int w1, int h1, Color color) { shearX(g, w1, h1, color); shearY(g, w1, h1, color); } private static void shearX(Graphics g, int w1, int h1, Color color) { int period = random.nextInt(2); boolean borderGap = true; int frames = 1; int phase = random.nextInt(2); for (int i = 0; i < h1; i++) { double d = (double) (period >> 1) * Math.sin((double) i / (double) period + (6.2831853071795862D * (double) phase) / (double) frames); g.copyArea(0, i, w1, 1, (int) d, 0); if (borderGap) { g.setColor(color); g.drawLine((int) d, i, 0, i); g.drawLine((int) d + w1, i, w1, i); } } } private static void shearY(Graphics g, int w1, int h1, Color color) { int period = random.nextInt(40) + 10; // 50; boolean borderGap = true; int frames = 20; int phase = 7; for (int i = 0; i < w1; i++) { double d = (double) (period >> 1) * Math.sin((double) i / (double) period + (6.2831853071795862D * (double) phase) / (double) frames); g.copyArea(i, 0, 1, h1, 0, (int) d); if (borderGap) { g.setColor(color); g.drawLine(i, (int) d, i, 0); g.drawLine(i, (int) d + h1, i, h1); } } } //生成一张验证码图片，并保存到项目的verifyCodeImg文件夹下 public static String createOneCodeImage(){ String imgName = ""; try { File dir = new File("./verifyCodeImg"); int w = 95, h = 50; String verifyCode = generateVerifyCode(4); File file = new File(dir, verifyCode + ".jpg"); outputImage(w, h, file, verifyCode); imgName = verifyCode; } catch (IOException e) { imgName = ""; e.printStackTrace(); }finally{ return imgName; } } public static void main(String[] args) throws IOException { String codeImage = VerifyCodeUtils.createOneCodeImage(); System.out.println(codeImage); } }
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