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fix: 修复点选验证码图片文字缩放的bug

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tianai
2026-01-24 18:12:13 +08:00
parent 356d3ab62c
commit 655b7faf57
5 changed files with 303 additions and 18 deletions
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tianai-captcha/src/main/java/cloud/tianai/captcha/generator/impl/AbstractClickImageCaptchaGenerator.java
+2 -2
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@@ -65,7 +65,7 @@ public abstract class AbstractClickImageCaptchaGenerator extends AbstractImageCa
}
// 随机获取点击图片
ClickImageCheckDefinition.ImgWrapper imgWrapper = getClickImg(param, clickResource, null);
ClickImageCheckDefinition.ImgWrapper imgWrapper = getClickImg(param, clickResource, null, bgImage);
BufferedImage image = imgWrapper.getImage();
// 增加功能，是否需要扭曲图片
image = obfuscateImage(image, param);
@@ -143,7 +143,7 @@ public abstract class AbstractClickImageCaptchaGenerator extends AbstractImageCa
* @param tip 提示数据,根据改数据生成图片
* @return ImgWrapper
*/
public abstract ClickImageCheckDefinition.ImgWrapper getClickImg(GenerateParam param, Resource tip, Color randomColor);
public abstract ClickImageCheckDefinition.ImgWrapper getClickImg(GenerateParam param, Resource tip, Color randomColor, BufferedImage bgImage);
@Data
tianai-captcha/src/main/java/cloud/tianai/captcha/generator/impl/StandardWordClickImageCaptchaGenerator.java
+2 -2
View File
@@ -92,7 +92,7 @@ public class StandardWordClickImageCaptchaGenerator extends AbstractClickImageCa
}
@Override
public ClickImageCheckDefinition.ImgWrapper getClickImg(GenerateParam param, Resource tip, Color randomColor) {
public ClickImageCheckDefinition.ImgWrapper getClickImg(GenerateParam param, Resource tip, Color randomColor, BufferedImage bgImage) {
if (randomColor == null) {
ThreadLocalRandom random = ThreadLocalRandom.current();
randomColor = CaptchaImageUtils.getRandomColor(random);
@@ -100,7 +100,7 @@ public class StandardWordClickImageCaptchaGenerator extends AbstractClickImageCa
// 随机角度
int randomDeg = randomInt(0, 85);
// 缩放
double factor = 600d;
double factor = (double) bgImage.getWidth(null) / 600d;
FontWrapper fontWrapper = randomFont(param);
Font font = fontWrapper.getFont((float) (FontWrapper.DEFAULT_FONT_SIZE * factor));
tianai-captcha/src/test/java/example/readme/TACBuilderTest.java
+65 -13
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@@ -14,48 +14,100 @@ import cloud.tianai.captcha.resource.common.model.dto.Resource;
import cloud.tianai.captcha.resource.common.model.dto.ResourceMap;
import cloud.tianai.captcha.resource.impl.LocalMemoryResourceStore;
import cloud.tianai.captcha.resource.impl.provider.ClassPathResourceProvider;
import cloud.tianai.captcha.validator.common.model.dto.ImageCaptchaTrack;
import java.awt.*;
import static cloud.tianai.captcha.common.constant.CommonConstant.DEFAULT_TAG;
import static cloud.tianai.captcha.generator.impl.StandardSliderImageCaptchaGenerator.TEMPLATE_ACTIVE_IMAGE_NAME;
import static cloud.tianai.captcha.generator.impl.StandardSliderImageCaptchaGenerator.TEMPLATE_FIXED_IMAGE_NAME;
public class TACBuilderTest {
public void test() {
ResourceMap template1 = new ResourceMap(DEFAULT_TAG, 2);
// 滑块轮廓图片
template1.put(TEMPLATE_ACTIVE_IMAGE_NAME, new Resource("classpath", "META-INF/cut-image/template/slider_1/active.png"));
// 滑块凹槽图片
template1.put(TEMPLATE_FIXED_IMAGE_NAME, new Resource("classpath", "META-INF/cut-image/template/slider_1/fixed.png"));
// 给旋转验证码配置模板
ResourceMap template2 = new ResourceMap(DEFAULT_TAG, 2);
// 旋转验证码轮廓图片
template2.put(TEMPLATE_ACTIVE_IMAGE_NAME, new Resource("classpath", "META-INF/cut-image/template/rotate_1/active.png"));
// 旋转验证码凹槽图片
template2.put(TEMPLATE_FIXED_IMAGE_NAME, new Resource("classpath", "META-INF/cut-image/template/rotate_1/fixed.png"));
ImageCaptchaApplication application = TACBuilder.builder()
// 设置资源存储器，默认是 LocalMemoryResourceStore
.setResourceStore(new LocalMemoryResourceStore())
// 配置模板
.addTemplate(CaptchaTypeConstant.SLIDER,template1)
.addTemplate(CaptchaTypeConstant.ROTATE,template2)
// ...其他配置
.build();
}
public static void main(String[] args) throws InterruptedException {
Font font= null;
Font font = null;
// ResourceMap template1 = new ResourceMap("default", 4);
// template1.put(StandardSliderImageCaptchaGenerator.TEMPLATE_ACTIVE_IMAGE_NAME, new Resource(ClassPathResourceProvider.NAME, "/active.png"));
// template1.put(StandardSliderImageCaptchaGenerator.TEMPLATE_FIXED_IMAGE_NAME, new Resource(ClassPathResourceProvider.NAME, "/fixed.png"));
ImageCaptchaApplication application = TACBuilder.builder()
// 设置资源存储器，默认是 LocalMemoryResourceStore
.setResourceStore(new LocalMemoryResourceStore())
// 加载系统自带的默认资源
// 加载系统自带的默认资源(系统内置了几个滑块验证码缺口模板图，调用此函数加载)
.addDefaultTemplate()
// 设置验证码过期时间
// 设置验证码过期时间, 单位毫秒, default 是默认验证码过期时间，当前设置为10秒,
// 可以自定义某些验证码类型单独的过期时间， 比如把点选验证码的过期时间设置为60秒
.expire("default", 10000L)
.expire("WORD_IMAGE_CLICK", 60000L)
// 设置拦截器
.expire(CaptchaTypeConstant.WORD_IMAGE_CLICK, 60000L)
// 设置拦截器，默认是 EmptyCaptchaInterceptor.INSTANCE
.setInterceptor(EmptyCaptchaInterceptor.INSTANCE)
// 添加验证码背景图片
.addResource("SLIDER", new Resource("classpath", "META-INF/cut-image/resource/1.jpg"))
.addResource("WORD_IMAGE_CLICK", new Resource("classpath", "META-INF/cut-image/resource/1.jpg"))
.addResource("ROTATE", new Resource("classpath", "META-INF/cut-image/resource/1.jpg"))
// arg1 验证码类型(SLIDER、WORD_IMAGE_CLICK、ROTATE、CONCAT),
// arg2 验证码背景图片资源
.addResource(CaptchaTypeConstant.SLIDER, new Resource("classpath", "META-INF/cut-image/resource/1.jpg"))
.addResource(CaptchaTypeConstant.WORD_IMAGE_CLICK, new Resource("classpath", "META-INF/cut-image/resource/1.jpg"))
.addResource(CaptchaTypeConstant.ROTATE, new Resource("classpath", "META-INF/cut-image/resource/1.jpg"))
.addResource(CaptchaTypeConstant.CONCAT, new Resource("classpath", "META-INF/cut-image/resource/1.jpg"))
// 添加验证码模板图片
// .addTemplate("SLIDER",template1)
// 设置缓冲器,可提前生成验证码，用于增加并发性
// 设置缓存器,可提前生成验证码，用于增加并发性，可以不设置，默认是不开启缓存
.cached(10, 1000, 5000, 10000L)
// 添加字体包，用于给文字点选验证码提供字体
.addFont(new Resource("file", "C:\\Users\\Thinkpad\\Desktop\\captcha\\手写字体\\ttf\\千图小兔体.ttf"))
// 设置缓存存储器，如果要支持分布式，需要把这里改成分布式缓存，比如通过redis实现的 CacheStore 缓存
.setCacheStore(new LocalCacheStore())
// 设置资源存储器，如果想在分布式环境或者想统一管理以及扩展 实现 ResourceStore 接口，自定义
// .setResourceStore(new LocalMemoryResourceStore())
// 图片转换器，默认是将图片转换成base64格式， 背景图为jpg， 模板图为png， 如果想要扩展，可替换成自己实现的
.setTransform(new Base64ImageTransform())
.build();
while (true){
while (true) {
long start = System.currentTimeMillis();
ApiResponse<ImageCaptchaVO> response = application.generateCaptcha("SLIDER");
// 生成验证码
// arg1 验证码类型(SLIDER、WORD_IMAGE_CLICK、ROTATE、CONCAT)
// response 为生成的验证码数据，可直接返回给前端
ApiResponse<ImageCaptchaVO> response = application.generateCaptcha(CaptchaTypeConstant.SLIDER);
// 校验验证码
// captchaId 和 track 数据应该是前端传来的验证数据
String captchaId = "";
ImageCaptchaTrack track = null;
ApiResponse<?> matching = application.matching(captchaId, track);
if (matching.isSuccess()) {
System.out.println("校验成功");
} else {
System.out.println("校验失败:" + matching.getMsg());
}
System.out.println("耗时:" + (System.currentTimeMillis() - start));
// System.out.println(response);
Thread.sleep(1000);