关于java:Java绘制验证码

package com.xiaoan.utils;import java.awt.*;import java.awt.image.BufferedImage;import java.util.Random;/** * @author 23105 * @version 1.0 * @description: 绘制验证码图片 * @date 13/2/2023 下午5:48 */public class CreateVerifiCodeImage {    private static int WIDTH = 90;    private static int HEIGHT = 35;    private static int FONT_SIZE = 20; //字符大小    private static char[] verifiCode; //验证码    private static BufferedImage verifiCodeImage; //验证码图片    /**     * @description: 获取验证码图片     * @param: no     * @return: java.awt.image.BufferedImage     */    public static BufferedImage getVerifiCodeImage() {        verifiCodeImage = new BufferedImage(WIDTH, HEIGHT, BufferedImage.TYPE_INT_BGR);// create a image        Graphics graphics = verifiCodeImage.getGraphics();        verifiCode = generateCheckCode();        drawBackground(graphics);        drawRands(graphics, verifiCode);        graphics.dispose();        return verifiCodeImage;    }    /**     * @description: 获取验证码     * @param: no     * @return: char[]     */    public static char[] getVerifiCode() {        return verifiCode;    }    /**     * @description: 随机生成验证码     * @param: no     * @return: char[]     */    private static char[] generateCheckCode() {        String chars = "0123456789abcdefghijklmnopqrstuvwxyz" + "ABCDEFGHIJKLMNOPQRSTUVWXYZ";        char[] rands = new char[4];        for (int i = 0; i < 4; i++) {            int rand = (int) (Math.random() * (10 + 26 * 2));            rands[i] = chars.charAt(rand);        }        return rands;    }    /**     * @description: 绘制验证码     * @param: g     * @param: rands     * @return: void     */    private static void drawRands(Graphics g, char[] rands) {        g.setFont(new Font("Console", Font.BOLD, FONT_SIZE));        for (int i = 0; i < rands.length; i++) {            g.setColor(getRandomColor());            g.drawString("" + rands[i], i * FONT_SIZE + 10, 25);        }    }    /**     * @description: 绘制验证码图片背景     * @param: g     * @return: void     */    private static void drawBackground(Graphics g) {        g.setColor(Color.white);        g.fillRect(0, 0, WIDTH, HEIGHT);        // 绘制验证码烦扰点        for (int i = 0; i < 200; i++) {            int x = (int) (Math.random() * WIDTH);            int y = (int) (Math.random() * HEIGHT);            g.setColor(getRandomColor());            g.drawOval(x, y, 1, 1);        }    }    /**     * @description: 获取随机色彩     * @param: no     * @return: java.awt.Color     */    private static Color getRandomColor() {        Random ran = new Random();        return new Color(ran.nextInt(220), ran.nextInt(220), ran.nextInt(220));    }}