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Looly
24
hutool-captcha/pom.xml
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24
hutool-captcha/pom.xml
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<?xml version='1.0' encoding='utf-8'?>
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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<packaging>jar</packaging>
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<parent>
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<groupId>cn.hutool</groupId>
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<artifactId>hutool-parent</artifactId>
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<version>4.6.2-SNAPSHOT</version>
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</parent>
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<artifactId>hutool-captcha</artifactId>
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<name>${project.artifactId}</name>
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<description>Hutool 验证码工具</description>
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<dependencies>
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<dependency>
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<groupId>cn.hutool</groupId>
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<artifactId>hutool-core</artifactId>
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<version>${project.parent.version}</version>
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</dependency>
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</dependencies>
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</project>
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@@ -0,0 +1,226 @@
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package cn.hutool.captcha;
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import java.awt.AlphaComposite;
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import java.awt.Color;
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import java.awt.Font;
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import java.awt.Image;
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import java.awt.image.BufferedImage;
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import java.io.ByteArrayOutputStream;
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import java.io.File;
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import java.io.IOException;
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import java.io.OutputStream;
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import cn.hutool.captcha.generator.CodeGenerator;
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import cn.hutool.captcha.generator.RandomGenerator;
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import cn.hutool.core.codec.Base64;
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import cn.hutool.core.img.ImgUtil;
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import cn.hutool.core.io.FileUtil;
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import cn.hutool.core.io.IORuntimeException;
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import cn.hutool.core.io.IoUtil;
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/**
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* 抽象验证码<br>
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* 抽象验证码实现了验证码字符串的生成、验证，验证码图片的写出<br>
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* 实现类通过实现{@link #createImage(String)} 方法生成图片对象
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*
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* @author looly
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*
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*/
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public abstract class AbstractCaptcha implements ICaptcha {
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private static final long serialVersionUID = 3180820918087507254L;
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/** 图片的宽度 */
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protected int width = 100;
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/** 图片的高度 */
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protected int height = 37;
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/** 验证码干扰元素个数 */
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protected int interfereCount = 15;
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/** 字体 */
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protected Font font;
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/** 验证码 */
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protected String code;
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/** 验证码图片 */
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protected byte[] imageBytes;
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/** 验证码生成器 */
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protected CodeGenerator generator;
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/** 背景色 */
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protected Color background;
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/** 文字透明度 */
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protected AlphaComposite textAlpha;
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/**
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* 构造，使用随机验证码生成器生成验证码
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*
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* @param width 图片宽
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* @param height 图片高
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* @param codeCount 字符个数
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* @param interfereCount 验证码干扰元素个数
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*/
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public AbstractCaptcha(int width, int height, int codeCount, int interfereCount) {
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this(width, height, new RandomGenerator(codeCount), interfereCount);
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}
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/**
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* 构造
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*
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* @param width 图片宽
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* @param height 图片高
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* @param generator 验证码生成器
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* @param interfereCount 验证码干扰元素个数
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*/
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public AbstractCaptcha(int width, int height, CodeGenerator generator, int interfereCount) {
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this.width = width;
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this.height = height;
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this.generator = generator;
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this.interfereCount = interfereCount;
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// 字体高度设为验证码高度-2，留边距
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this.font = new Font(Font.SANS_SERIF, Font.PLAIN, (int) (this.height * 0.75));
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}
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@Override
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public void createCode() {
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generateCode();
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final ByteArrayOutputStream out = new ByteArrayOutputStream();
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ImgUtil.writePng(createImage(this.code), out);
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this.imageBytes = out.toByteArray();
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}
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/**
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* 生成验证码字符串
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*
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* @since 3.3.0
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*/
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protected void generateCode() {
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this.code = generator.generate();
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}
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/**
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* 根据生成的code创建验证码图片
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*
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* @param code 验证码
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*/
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protected abstract Image createImage(String code);
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@Override
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public String getCode() {
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if(null == this.code) {
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createCode();
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}
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return this.code;
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}
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@Override
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public boolean verify(String userInputCode) {
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return this.generator.verify(getCode(), userInputCode);
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}
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/**
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* 验证码写出到文件
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*
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* @param path 文件路径
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* @throws IORuntimeException IO异常
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*/
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public void write(String path) throws IORuntimeException {
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this.write(FileUtil.touch(path));
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}
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/**
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* 验证码写出到文件
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*
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* @param file 文件
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* @throws IORuntimeException IO异常
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*/
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public void write(File file) throws IORuntimeException {
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try (OutputStream out = FileUtil.getOutputStream(file)) {
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this.write(out);
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} catch (IOException e) {
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throw new IORuntimeException(e);
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}
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}
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@Override
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public void write(OutputStream out) {
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IoUtil.write(out, false, getImageBytes());
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}
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/**
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* 获取图形验证码图片bytes
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*
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* @return 图形验证码图片bytes
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* @since 4.5.17
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*/
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public byte[] getImageBytes() {
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if (null == this.imageBytes) {
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createCode();
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}
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return this.imageBytes;
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}
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/**
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* 获取验证码图
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*
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* @return 验证码图
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*/
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public BufferedImage getImage() {
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return ImgUtil.read(IoUtil.toStream(getImageBytes()));
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}
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/**
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* 获得图片的Base64形式
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*
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* @return 图片的Base64
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* @since 3.3.0
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*/
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public String getImageBase64() {
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return Base64.encode(getImageBytes());
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}
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/**
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* 自定义字体
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*
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* @param font 字体
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*/
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public void setFont(Font font) {
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this.font = font;
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}
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/**
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* 获取验证码生成器
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*
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* @return 验证码生成器
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*/
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public CodeGenerator getGenerator() {
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return generator;
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}
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/**
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* 设置验证码生成器
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*
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* @param generator 验证码生成器
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*/
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public void setGenerator(CodeGenerator generator) {
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this.generator = generator;
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}
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/**
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* 设置背景色
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*
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* @param background 背景色
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* @since 4.1.22
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*/
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public void setBackground(Color background) {
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this.background = background;
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}
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/**
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* 设置文字透明度
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*
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* @param textAlpha 文字透明度，取值0~1，1表示不透明
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* @since 4.5.17
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*/
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public void setTextAlpha(float textAlpha) {
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this.textAlpha = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, textAlpha);
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}
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}
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@@ -0,0 +1,86 @@
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package cn.hutool.captcha;
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/**
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* 图形验证码工具
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*
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* @author looly
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* @since 3.1.2
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*/
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public class CaptchaUtil {
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/**
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* 创建线干扰的验证码，默认5位验证码，150条干扰线
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*
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* @param width 图片宽
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* @param height 图片高
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* @return {@link LineCaptcha}
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*/
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public static LineCaptcha createLineCaptcha(int width, int height) {
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return new LineCaptcha(width, height);
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}
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/**
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* 创建线干扰的验证码
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*
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* @param width 图片宽
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* @param height 图片高
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* @param codeCount 字符个数
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* @param lineCount 干扰线条数
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* @return {@link LineCaptcha}
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*/
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public static LineCaptcha createLineCaptcha(int width, int height, int codeCount, int lineCount) {
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return new LineCaptcha(width, height, codeCount, lineCount);
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}
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/**
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* 创建圆圈干扰的验证码，默认5位验证码，15个干扰圈
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*
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* @param width 图片宽
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* @param height 图片高
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* @return {@link CircleCaptcha}
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* @since 3.2.3
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*/
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public static CircleCaptcha createCircleCaptcha(int width, int height) {
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return new CircleCaptcha(width, height);
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}
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/**
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* 创建圆圈干扰的验证码
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*
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* @param width 图片宽
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* @param height 图片高
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* @param codeCount 字符个数
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* @param circleCount 干扰圆圈条数
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* @return {@link CircleCaptcha}
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* @since 3.2.3
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*/
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public static CircleCaptcha createCircleCaptcha(int width, int height, int codeCount, int circleCount) {
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return new CircleCaptcha(width, height, codeCount, circleCount);
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}
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/**
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* 创建扭曲干扰的验证码，默认5位验证码
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*
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* @param width 图片宽
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* @param height 图片高
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* @return {@link ShearCaptcha}
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* @since 3.2.3
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*/
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public static ShearCaptcha createShearCaptcha(int width, int height) {
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return new ShearCaptcha(width, height);
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}
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/**
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* 创建扭曲干扰的验证码，默认5位验证码
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*
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* @param width 图片宽
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* @param height 图片高
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* @param codeCount 字符个数
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* @param thickness 干扰线宽度
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* @return {@link ShearCaptcha}
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* @since 3.3.0
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*/
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public static ShearCaptcha createShearCaptcha(int width, int height, int codeCount, int thickness) {
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return new ShearCaptcha(width, height, codeCount, thickness);
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}
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}
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@@ -0,0 +1,101 @@
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package cn.hutool.captcha;
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import java.awt.Color;
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import java.awt.Graphics;
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import java.awt.Graphics2D;
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import java.awt.Image;
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import java.awt.image.BufferedImage;
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import java.util.concurrent.ThreadLocalRandom;
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import cn.hutool.core.img.GraphicsUtil;
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import cn.hutool.core.img.ImgUtil;
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import cn.hutool.core.util.ObjectUtil;
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import cn.hutool.core.util.RandomUtil;
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/**
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* 圆圈干扰验证码
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*
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* @author looly
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* @since 3.2.3
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*
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*/
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public class CircleCaptcha extends AbstractCaptcha {
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private static final long serialVersionUID = -7096627300356535494L;
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/**
|
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* 构造
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*
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* @param width 图片宽
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* @param height 图片高
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*/
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public CircleCaptcha(int width, int height) {
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this(width, height, 5);
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}
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/**
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* 构造
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*
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* @param width 图片宽
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* @param height 图片高
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* @param codeCount 字符个数
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*/
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public CircleCaptcha(int width, int height, int codeCount) {
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this(width, height, codeCount, 15);
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}
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/**
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* 构造
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||||
*
|
||||
* @param width 图片宽
|
||||
* @param height 图片高
|
||||
* @param codeCount 字符个数
|
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* @param interfereCount 验证码干扰元素个数
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*/
|
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public CircleCaptcha(int width, int height, int codeCount, int interfereCount) {
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super(width, height, codeCount, interfereCount);
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}
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@Override
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public Image createImage(String code) {
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final BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
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final Graphics2D g = ImgUtil.createGraphics(image, ObjectUtil.defaultIfNull(this.background, Color.WHITE));
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// 随机画干扰圈圈
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drawInterfere(g);
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// 画字符串
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drawString(g, code);
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return image;
|
||||
}
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||||
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// ----------------------------------------------------------------------------------------------------- Private method start
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||||
/**
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||||
* 绘制字符串
|
||||
*
|
||||
* @param g {@link Graphics}画笔
|
||||
* @param code 验证码
|
||||
*/
|
||||
private void drawString(Graphics2D g, String code) {
|
||||
// 指定透明度
|
||||
if (null != this.textAlpha) {
|
||||
g.setComposite(this.textAlpha);
|
||||
}
|
||||
GraphicsUtil.drawStringColourful(g, code, this.font, this.width, this.height);
|
||||
}
|
||||
|
||||
/**
|
||||
* 画随机干扰
|
||||
*
|
||||
* @param g {@link Graphics2D}
|
||||
*/
|
||||
private void drawInterfere(Graphics2D g) {
|
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final ThreadLocalRandom random = RandomUtil.getRandom();
|
||||
|
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for (int i = 0; i < this.interfereCount; i++) {
|
||||
g.setColor(ImgUtil.randomColor(random));
|
||||
g.drawOval(random.nextInt(width), random.nextInt(height), random.nextInt(height >> 1), random.nextInt(height >> 1));
|
||||
}
|
||||
}
|
||||
// ----------------------------------------------------------------------------------------------------- Private method end
|
||||
}
|
||||
40
hutool-captcha/src/main/java/cn/hutool/captcha/ICaptcha.java
Normal file
40
hutool-captcha/src/main/java/cn/hutool/captcha/ICaptcha.java
Normal file
@@ -0,0 +1,40 @@
|
||||
package cn.hutool.captcha;
|
||||
|
||||
import java.io.OutputStream;
|
||||
import java.io.Serializable;
|
||||
|
||||
/**
|
||||
* 验证码接口，提供验证码对象接口定义
|
||||
*
|
||||
* @author looly
|
||||
*
|
||||
*/
|
||||
public interface ICaptcha extends Serializable{
|
||||
|
||||
/**
|
||||
* 创建验证码，实现类需同时生成随机验证码字符串和验证码图片
|
||||
*/
|
||||
void createCode();
|
||||
|
||||
/**
|
||||
* 获取验证码的文字内容
|
||||
*
|
||||
* @return 验证码文字内容
|
||||
*/
|
||||
String getCode();
|
||||
|
||||
/**
|
||||
* 验证验证码是否正确，建议忽略大小写
|
||||
*
|
||||
* @param userInputCode 用户输入的验证码
|
||||
* @return 是否与生成的一直
|
||||
*/
|
||||
boolean verify(String userInputCode);
|
||||
|
||||
/**
|
||||
* 将验证码写出到目标流中
|
||||
*
|
||||
* @param out 目标流
|
||||
*/
|
||||
void write(OutputStream out);
|
||||
}
|
||||
@@ -0,0 +1,96 @@
|
||||
package cn.hutool.captcha;
|
||||
|
||||
import java.awt.Color;
|
||||
import java.awt.Graphics;
|
||||
import java.awt.Graphics2D;
|
||||
import java.awt.Image;
|
||||
import java.awt.image.BufferedImage;
|
||||
import java.util.concurrent.ThreadLocalRandom;
|
||||
|
||||
import cn.hutool.core.img.GraphicsUtil;
|
||||
import cn.hutool.core.img.ImgUtil;
|
||||
import cn.hutool.core.util.ObjectUtil;
|
||||
import cn.hutool.core.util.RandomUtil;
|
||||
|
||||
/**
|
||||
* 使用干扰线方式生成的图形验证码
|
||||
*
|
||||
* @author looly
|
||||
* @since 3.1.2
|
||||
*/
|
||||
public class LineCaptcha extends AbstractCaptcha {
|
||||
private static final long serialVersionUID = 8691294460763091089L;
|
||||
|
||||
// -------------------------------------------------------------------- Constructor start
|
||||
/**
|
||||
* 构造，默认5位验证码，150条干扰线
|
||||
*
|
||||
* @param width 图片宽
|
||||
* @param height 图片高
|
||||
*/
|
||||
public LineCaptcha(int width, int height) {
|
||||
this(width, height, 5, 150);
|
||||
}
|
||||
|
||||
/**
|
||||
* 构造
|
||||
*
|
||||
* @param width 图片宽
|
||||
* @param height 图片高
|
||||
* @param codeCount 字符个数
|
||||
* @param lineCount 干扰线条数
|
||||
*/
|
||||
public LineCaptcha(int width, int height, int codeCount, int lineCount) {
|
||||
super(width, height, codeCount, lineCount);
|
||||
}
|
||||
// -------------------------------------------------------------------- Constructor end
|
||||
|
||||
@Override
|
||||
public Image createImage(String code) {
|
||||
// 图像buffer
|
||||
final BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
|
||||
final Graphics2D g = GraphicsUtil.createGraphics(image, ObjectUtil.defaultIfNull(this.background, Color.WHITE));
|
||||
|
||||
// 干扰线
|
||||
drawInterfere(g);
|
||||
|
||||
// 字符串
|
||||
drawString(g, code);
|
||||
|
||||
return image;
|
||||
}
|
||||
|
||||
// ----------------------------------------------------------------------------------------------------- Private method start
|
||||
/**
|
||||
* 绘制字符串
|
||||
*
|
||||
* @param g {@link Graphics}画笔
|
||||
* @param code 验证码
|
||||
*/
|
||||
private void drawString(Graphics2D g, String code) {
|
||||
// 指定透明度
|
||||
if (null != this.textAlpha) {
|
||||
g.setComposite(this.textAlpha);
|
||||
}
|
||||
GraphicsUtil.drawStringColourful(g, code, this.font, this.width, this.height);
|
||||
}
|
||||
|
||||
/**
|
||||
* 绘制干扰线
|
||||
*
|
||||
* @param g {@link Graphics2D}画笔
|
||||
*/
|
||||
private void drawInterfere(Graphics2D g) {
|
||||
final ThreadLocalRandom random = RandomUtil.getRandom();
|
||||
// 干扰线
|
||||
for (int i = 0; i < this.interfereCount; i++) {
|
||||
int xs = random.nextInt(width);
|
||||
int ys = random.nextInt(height);
|
||||
int xe = xs + random.nextInt(width / 8);
|
||||
int ye = ys + random.nextInt(height / 8);
|
||||
g.setColor(ImgUtil.randomColor(random));
|
||||
g.drawLine(xs, ys, xe, ye);
|
||||
}
|
||||
}
|
||||
// ----------------------------------------------------------------------------------------------------- Private method start
|
||||
}
|
||||
201
hutool-captcha/src/main/java/cn/hutool/captcha/ShearCaptcha.java
Normal file
201
hutool-captcha/src/main/java/cn/hutool/captcha/ShearCaptcha.java
Normal file
@@ -0,0 +1,201 @@
|
||||
package cn.hutool.captcha;
|
||||
|
||||
import java.awt.Color;
|
||||
import java.awt.Graphics;
|
||||
import java.awt.Graphics2D;
|
||||
import java.awt.Image;
|
||||
import java.awt.image.BufferedImage;
|
||||
|
||||
import cn.hutool.core.img.GraphicsUtil;
|
||||
import cn.hutool.core.img.ImgUtil;
|
||||
import cn.hutool.core.util.ObjectUtil;
|
||||
import cn.hutool.core.util.RandomUtil;
|
||||
|
||||
/**
|
||||
* 扭曲干扰验证码
|
||||
*
|
||||
* @author looly
|
||||
* @since 3.2.3
|
||||
*
|
||||
*/
|
||||
public class ShearCaptcha extends AbstractCaptcha {
|
||||
private static final long serialVersionUID = -7096627300356535494L;
|
||||
|
||||
/**
|
||||
* 构造
|
||||
*
|
||||
* @param width 图片宽
|
||||
* @param height 图片高
|
||||
*/
|
||||
public ShearCaptcha(int width, int height) {
|
||||
this(width, height, 5);
|
||||
}
|
||||
|
||||
/**
|
||||
* 构造
|
||||
*
|
||||
* @param width 图片宽
|
||||
* @param height 图片高
|
||||
* @param codeCount 字符个数
|
||||
*/
|
||||
public ShearCaptcha(int width, int height, int codeCount) {
|
||||
this(width, height, codeCount, 4);
|
||||
}
|
||||
|
||||
/**
|
||||
* 构造
|
||||
*
|
||||
* @param width 图片宽
|
||||
* @param height 图片高
|
||||
* @param codeCount 字符个数
|
||||
* @param thickness 干扰线宽度
|
||||
*/
|
||||
public ShearCaptcha(int width, int height, int codeCount, int thickness) {
|
||||
super(width, height, codeCount, thickness);
|
||||
}
|
||||
|
||||
@Override
|
||||
public Image createImage(String code) {
|
||||
final BufferedImage image = new BufferedImage(this.width, this.height, BufferedImage.TYPE_INT_RGB);
|
||||
final Graphics2D g = GraphicsUtil.createGraphics(image, ObjectUtil.defaultIfNull(this.background, Color.WHITE));
|
||||
|
||||
// 画字符串
|
||||
drawString(g, code);
|
||||
|
||||
// 扭曲
|
||||
shear(g, this.width, this.height, ObjectUtil.defaultIfNull(this.background, Color.WHITE));
|
||||
// 画干扰线
|
||||
drawInterfere(g, 0, RandomUtil.randomInt(this.height) + 1, this.width, RandomUtil.randomInt(this.height) + 1, this.interfereCount, ImgUtil.randomColor());
|
||||
|
||||
return image;
|
||||
}
|
||||
|
||||
// ----------------------------------------------------------------------------------------------------- Private method start
|
||||
/**
|
||||
* 绘制字符串
|
||||
*
|
||||
* @param g {@link Graphics}画笔
|
||||
* @param code 验证码
|
||||
*/
|
||||
private void drawString(Graphics2D g, String code) {
|
||||
// 指定透明度
|
||||
if (null != this.textAlpha) {
|
||||
g.setComposite(this.textAlpha);
|
||||
}
|
||||
GraphicsUtil.drawStringColourful(g, code, this.font, this.width, this.height);
|
||||
}
|
||||
|
||||
/**
|
||||
* 扭曲
|
||||
*
|
||||
* @param g {@link Graphics}
|
||||
* @param w1 w1
|
||||
* @param h1 h1
|
||||
* @param color 颜色
|
||||
*/
|
||||
private void shear(Graphics g, int w1, int h1, Color color) {
|
||||
shearX(g, w1, h1, color);
|
||||
shearY(g, w1, h1, color);
|
||||
}
|
||||
|
||||
/**
|
||||
* X坐标扭曲
|
||||
*
|
||||
* @param g {@link Graphics}
|
||||
* @param w1 宽
|
||||
* @param h1 高
|
||||
* @param color 颜色
|
||||
*/
|
||||
private void shearX(Graphics g, int w1, int h1, Color color) {
|
||||
|
||||
int period = RandomUtil.randomInt(this.width);
|
||||
|
||||
boolean borderGap = true;
|
||||
int frames = 1;
|
||||
int phase = RandomUtil.randomInt(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);
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
* Y坐标扭曲
|
||||
*
|
||||
* @param g {@link Graphics}
|
||||
* @param w1 宽
|
||||
* @param h1 高
|
||||
* @param color 颜色
|
||||
*/
|
||||
private void shearY(Graphics g, int w1, int h1, Color color) {
|
||||
|
||||
int period = RandomUtil.randomInt(this.height >> 1);
|
||||
|
||||
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);
|
||||
g.setColor(color);
|
||||
// 擦除原位置的痕迹
|
||||
g.drawLine(i, (int) d, i, 0);
|
||||
g.drawLine(i, (int) d + h1, i, h1);
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
* 干扰线
|
||||
*
|
||||
* @param g {@link Graphics}
|
||||
* @param x1x1
|
||||
* @param y1 y1
|
||||
* @param x2 x2
|
||||
* @param y2 y2
|
||||
* @param thickness 粗细
|
||||
* @param c 颜色
|
||||
*/
|
||||
private void drawInterfere(Graphics g, int x1, int y1, int x2, int y2, int thickness, Color c) {
|
||||
|
||||
// The thick line is in fact a filled polygon
|
||||
g.setColor(c);
|
||||
int dX = x2 - x1;
|
||||
int dY = y2 - y1;
|
||||
// line length
|
||||
double lineLength = Math.sqrt(dX * dX + dY * dY);
|
||||
|
||||
double scale = (double) (thickness) / (2 * lineLength);
|
||||
|
||||
// The x and y increments from an endpoint needed to create a
|
||||
// rectangle...
|
||||
double ddx = -scale * (double) dY;
|
||||
double ddy = scale * (double) dX;
|
||||
ddx += (ddx > 0) ? 0.5 : -0.5;
|
||||
ddy += (ddy > 0) ? 0.5 : -0.5;
|
||||
int dx = (int) ddx;
|
||||
int dy = (int) ddy;
|
||||
|
||||
// Now we can compute the corner points...
|
||||
int xPoints[] = new int[4];
|
||||
int yPoints[] = new int[4];
|
||||
|
||||
xPoints[0] = x1 + dx;
|
||||
yPoints[0] = y1 + dy;
|
||||
xPoints[1] = x1 - dx;
|
||||
yPoints[1] = y1 - dy;
|
||||
xPoints[2] = x2 - dx;
|
||||
yPoints[2] = y2 - dy;
|
||||
xPoints[3] = x2 + dx;
|
||||
yPoints[3] = y2 + dy;
|
||||
|
||||
g.fillPolygon(xPoints, yPoints, 4);
|
||||
}
|
||||
// ----------------------------------------------------------------------------------------------------- Private method end
|
||||
}
|
||||
@@ -0,0 +1,48 @@
|
||||
package cn.hutool.captcha.generator;
|
||||
|
||||
import cn.hutool.core.util.RandomUtil;
|
||||
|
||||
/**
|
||||
* 随机字符验证码生成器<br>
|
||||
* 可以通过传入的基础集合和长度随机生成验证码字符
|
||||
*
|
||||
* @author looly
|
||||
* @since 4.1.2
|
||||
*/
|
||||
public abstract class AbstractGenerator implements CodeGenerator {
|
||||
private static final long serialVersionUID = 8685744597154953479L;
|
||||
|
||||
/** 基础字符集合，用于随机获取字符串的字符集合 */
|
||||
protected String baseStr;
|
||||
/** 验证码长度 */
|
||||
protected int length;
|
||||
|
||||
/**
|
||||
* 构造，使用字母+数字做为基础
|
||||
*
|
||||
* @param count 生成验证码长度
|
||||
*/
|
||||
public AbstractGenerator(int count) {
|
||||
this(RandomUtil.BASE_CHAR_NUMBER, count);
|
||||
}
|
||||
|
||||
/**
|
||||
* 构造
|
||||
*
|
||||
* @param baseStr 基础字符集合，用于随机获取字符串的字符集合
|
||||
* @param length 生成验证码长度
|
||||
*/
|
||||
public AbstractGenerator(String baseStr, int length) {
|
||||
this.baseStr = baseStr;
|
||||
this.length = length;
|
||||
}
|
||||
|
||||
/**
|
||||
* 获取长度验证码
|
||||
*
|
||||
* @return 验证码长度
|
||||
*/
|
||||
public int getLength() {
|
||||
return this.length;
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,28 @@
|
||||
package cn.hutool.captcha.generator;
|
||||
|
||||
import java.io.Serializable;
|
||||
|
||||
/**
|
||||
* 验证码文字生成器
|
||||
*
|
||||
* @author looly
|
||||
* @since 4.1.2
|
||||
*/
|
||||
public interface CodeGenerator extends Serializable{
|
||||
/**
|
||||
* 生成验证码
|
||||
*
|
||||
* @return 验证码
|
||||
*/
|
||||
public String generate();
|
||||
|
||||
/**
|
||||
* 验证用户输入的字符串是否与生成的验证码匹配<br>
|
||||
* 用户通过实现此方法定义验证码匹配方式
|
||||
*
|
||||
* @param code 生成的随机验证码
|
||||
* @param userInputCode 用户输入的验证码
|
||||
* @return 是否验证通过
|
||||
*/
|
||||
public boolean verify(String code, String userInputCode);
|
||||
}
|
||||
@@ -0,0 +1,96 @@
|
||||
package cn.hutool.captcha.generator;
|
||||
|
||||
import cn.hutool.core.util.CharUtil;
|
||||
import cn.hutool.core.util.RandomUtil;
|
||||
import cn.hutool.core.util.StrUtil;
|
||||
|
||||
/**
|
||||
* 数字计算验证码生成器
|
||||
*
|
||||
* @author looly
|
||||
* @since 4.1.2
|
||||
*/
|
||||
public class MathGenerator implements CodeGenerator {
|
||||
private static final long serialVersionUID = -5514819971774091076L;
|
||||
|
||||
private static final String operators = "+-*";
|
||||
|
||||
/** 参与计算数字最大长度 */
|
||||
private int numberLength;
|
||||
|
||||
/**
|
||||
* 构造
|
||||
*/
|
||||
public MathGenerator() {
|
||||
this(2);
|
||||
}
|
||||
|
||||
/**
|
||||
* 构造
|
||||
*
|
||||
* @param numberLength 参与计算最大数字位数
|
||||
*/
|
||||
public MathGenerator(int numberLength) {
|
||||
this.numberLength = numberLength;
|
||||
}
|
||||
|
||||
@Override
|
||||
public String generate() {
|
||||
final int limit = getLimit();
|
||||
String number1 = Integer.toString(RandomUtil.randomInt(limit));
|
||||
String number2 = Integer.toString(RandomUtil.randomInt(limit));
|
||||
number1 = StrUtil.padAfter(number1, this.numberLength, CharUtil.SPACE);
|
||||
number2 = StrUtil.padAfter(number2, this.numberLength, CharUtil.SPACE);
|
||||
|
||||
final String code = StrUtil.builder()//
|
||||
.append(number1)//
|
||||
.append(RandomUtil.randomChar(operators))//
|
||||
.append(number2)//
|
||||
.append('=').toString();
|
||||
return code;
|
||||
}
|
||||
|
||||
@Override
|
||||
public boolean verify(String code, String userInputCode) {
|
||||
int result;
|
||||
try {
|
||||
result = Integer.parseInt(userInputCode);
|
||||
} catch (NumberFormatException e) {
|
||||
// 用户输入非数字
|
||||
return false;
|
||||
}
|
||||
|
||||
final int a = Integer.parseInt(StrUtil.sub(code, 0, this.numberLength).trim());
|
||||
final char operator = code.charAt(this.numberLength);
|
||||
final int b = Integer.parseInt(StrUtil.sub(code, this.numberLength + 1, this.numberLength + 1 + this.numberLength).trim());
|
||||
|
||||
switch (operator) {
|
||||
case '+':
|
||||
return (a + b) == result;
|
||||
case '-':
|
||||
return (a - b) == result;
|
||||
case '*':
|
||||
return (a * b) == result;
|
||||
default:
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* 获取长度验证码
|
||||
*
|
||||
* @return 验证码长度
|
||||
*/
|
||||
public int getLength() {
|
||||
return this.numberLength * 2 + 2;
|
||||
}
|
||||
|
||||
/**
|
||||
* 根据长度获取参与计算数字最大值
|
||||
*
|
||||
* @return 最大值
|
||||
*/
|
||||
private int getLimit() {
|
||||
return Integer.parseInt("1" + StrUtil.repeat('0', this.numberLength));
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,47 @@
|
||||
package cn.hutool.captcha.generator;
|
||||
|
||||
import cn.hutool.core.util.RandomUtil;
|
||||
import cn.hutool.core.util.StrUtil;
|
||||
|
||||
/**
|
||||
* 随机字符验证码生成器<br>
|
||||
* 可以通过传入的基础集合和长度随机生成验证码字符
|
||||
*
|
||||
* @author looly
|
||||
* @since 4.1.2
|
||||
*/
|
||||
public class RandomGenerator extends AbstractGenerator {
|
||||
private static final long serialVersionUID = -7802758587765561876L;
|
||||
|
||||
/**
|
||||
* 构造，使用字母+数字做为基础
|
||||
*
|
||||
* @param count 生成验证码长度
|
||||
*/
|
||||
public RandomGenerator(int count) {
|
||||
super(count);
|
||||
}
|
||||
|
||||
/**
|
||||
* 构造
|
||||
*
|
||||
* @param baseStr 基础字符集合，用于随机获取字符串的字符集合
|
||||
* @param length 生成验证码长度
|
||||
*/
|
||||
public RandomGenerator(String baseStr, int length) {
|
||||
super(baseStr, length);
|
||||
}
|
||||
|
||||
@Override
|
||||
public String generate() {
|
||||
return RandomUtil.randomString(this.baseStr, this.length);
|
||||
}
|
||||
|
||||
@Override
|
||||
public boolean verify(String code, String userInputCode) {
|
||||
if (StrUtil.isNotBlank(userInputCode)) {
|
||||
return StrUtil.equalsIgnoreCase(code, userInputCode);
|
||||
}
|
||||
return false;
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,7 @@
|
||||
/**
|
||||
* 验证码生成策略实现
|
||||
*
|
||||
* @author looly
|
||||
* @since 4.1.2
|
||||
*/
|
||||
package cn.hutool.captcha.generator;
|
||||
@@ -0,0 +1,7 @@
|
||||
/**
|
||||
* 图片验证码实现
|
||||
*
|
||||
* @author looly
|
||||
*
|
||||
*/
|
||||
package cn.hutool.captcha;
|
||||
@@ -0,0 +1,95 @@
|
||||
package cn.hutool.captcha;
|
||||
|
||||
import org.junit.Assert;
|
||||
import org.junit.Ignore;
|
||||
import org.junit.Test;
|
||||
|
||||
import cn.hutool.captcha.generator.MathGenerator;
|
||||
import cn.hutool.core.lang.Console;
|
||||
|
||||
/**
|
||||
* 直线干扰验证码单元测试
|
||||
*
|
||||
* @author looly
|
||||
*
|
||||
*/
|
||||
public class CaptchaTest {
|
||||
|
||||
@Test
|
||||
public void lineCaptchaTest1() {
|
||||
// 定义图形验证码的长和宽
|
||||
LineCaptcha lineCaptcha = CaptchaUtil.createLineCaptcha(200, 100);
|
||||
Assert.assertNotNull(lineCaptcha.getCode());
|
||||
Assert.assertTrue(lineCaptcha.verify(lineCaptcha.getCode()));
|
||||
}
|
||||
|
||||
@Test
|
||||
@Ignore
|
||||
public void lineCaptchaWithMathTest() {
|
||||
// 定义图形验证码的长和宽
|
||||
LineCaptcha lineCaptcha = CaptchaUtil.createLineCaptcha(200, 80);
|
||||
lineCaptcha.setGenerator(new MathGenerator());
|
||||
lineCaptcha.setTextAlpha(0.8f);
|
||||
lineCaptcha.write("f:/captcha/math.png");
|
||||
}
|
||||
|
||||
@Test
|
||||
@Ignore
|
||||
public void lineCaptchaTest2() {
|
||||
|
||||
// 定义图形验证码的长和宽
|
||||
LineCaptcha lineCaptcha = CaptchaUtil.createLineCaptcha(200, 100);
|
||||
// LineCaptcha lineCaptcha = new LineCaptcha(200, 100, 4, 150);
|
||||
// 图形验证码写出，可以写出到文件，也可以写出到流
|
||||
lineCaptcha.write("f:/captcha/line.png");
|
||||
Console.log(lineCaptcha.getCode());
|
||||
// 验证图形验证码的有效性，返回boolean值
|
||||
lineCaptcha.verify("1234");
|
||||
|
||||
lineCaptcha.createCode();
|
||||
lineCaptcha.write("f:/captcha/line2.png");
|
||||
Console.log(lineCaptcha.getCode());
|
||||
// 验证图形验证码的有效性，返回boolean值
|
||||
lineCaptcha.verify("1234");
|
||||
}
|
||||
|
||||
@Test
|
||||
@Ignore
|
||||
public void circleCaptchaTest() {
|
||||
|
||||
// 定义图形验证码的长和宽
|
||||
CircleCaptcha captcha = CaptchaUtil.createCircleCaptcha(200, 100, 4, 20);
|
||||
// CircleCaptcha captcha = new CircleCaptcha(200, 100, 4, 20);
|
||||
// 图形验证码写出，可以写出到文件，也可以写出到流
|
||||
captcha.write("f:/captcha/circle.png");
|
||||
// 验证图形验证码的有效性，返回boolean值
|
||||
captcha.verify("1234");
|
||||
}
|
||||
|
||||
@Test
|
||||
@Ignore
|
||||
public void ShearCaptchaTest() {
|
||||
|
||||
// 定义图形验证码的长和宽
|
||||
ShearCaptcha captcha = CaptchaUtil.createShearCaptcha(203, 100, 4, 4);
|
||||
// ShearCaptcha captcha = new ShearCaptcha(200, 100, 4, 4);
|
||||
// 图形验证码写出，可以写出到文件，也可以写出到流
|
||||
captcha.write("f:/captcha/shear.png");
|
||||
// 验证图形验证码的有效性，返回boolean值
|
||||
captcha.verify("1234");
|
||||
}
|
||||
|
||||
@Test
|
||||
@Ignore
|
||||
public void ShearCaptchaWithMathTest() {
|
||||
|
||||
// 定义图形验证码的长和宽
|
||||
ShearCaptcha captcha = CaptchaUtil.createShearCaptcha(200, 45, 4, 4);
|
||||
captcha.setGenerator(new MathGenerator());
|
||||
// ShearCaptcha captcha = new ShearCaptcha(200, 100, 4, 4);
|
||||
// 图形验证码写出，可以写出到文件，也可以写出到流
|
||||
captcha.write("f:/captcha/shear_math.png");
|
||||
// 验证图形验证码的有效性，返回boolean值
|
||||
captcha.verify("1234");
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,15 @@
|
||||
package cn.hutool.captcha;
|
||||
|
||||
import org.junit.Ignore;
|
||||
import org.junit.Test;
|
||||
|
||||
public class CaptchaUtilTest {
|
||||
|
||||
@Test
|
||||
@Ignore
|
||||
public void createTest() {
|
||||
for(int i = 0; i < 1; i++) {
|
||||
CaptchaUtil.createShearCaptcha(320, 240);
|
||||
}
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user