zihluwang
b2eb6b9638
Frees /products/ for the product page and makes the open-source archive explicit, rather than leaving two sections that both look like "projects". - Move the directory in both locales and update the 18 internal links pointing into it. - Rework helix for the GitHub layout: server/ and web/ are directories in a single repository there, not the two separate repositories Gitea had. The "fork both repositories" step and the section wording follow. - Correct helix's stated Java version to 21, which is what the build actually targets.
90 lines
2.9 KiB
Plaintext
90 lines
2.9 KiB
Plaintext
---
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title: Captcha
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---
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import { Tabs, Tab } from "@rspress/core/theme"
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## Introduction
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Captcha is a Java library for generating CAPTCHA images. This project is a spiritual successor to Google's Kaptcha, modernised for contemporary development practices.
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With Captcha, you can easily generate customisable CAPTCHA images with various distortion effects, noise, and background options to integrate into your Java applications.
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## Features
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- **Easy Integration** — Simple builder-based API for quick setup and configuration.
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- **Customisable CAPTCHA Generation** — Configure text length, character sets, font styles, and colours.
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- **Multiple Distortion Effects** — Choose from Water Ripple, Fish Eye, and Shadow effects.
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- **Configurable Noise** — Add noise lines with custom colours, or disable noise entirely.
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- **Gradient Backgrounds** — Customisable gradient background colours.
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- **Clean, Modern Codebase** — Well-documented, type-safe, and easy to extend.
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## Installation
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<Tabs>
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<Tab label="Gradle with Kotlin DSL">
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```kotlin title="build.gradle.kts"
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dependencies {
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implementation("com.onixbyte:captcha:1.0.0")
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}
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```
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</Tab>
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<Tab label="Maven">
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```xml title="pom.xml"
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<dependencies>
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<dependency>
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<groupId>com.onixbyte</groupId>
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<artifactId>captcha</artifactId>
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<version>1.0.0</version>
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</dependency>
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</dependencies>
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```
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</Tab>
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</Tabs>
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## Quick Start
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```java
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import com.onixbyte.captcha.Producer;
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import com.onixbyte.captcha.background.BackgroundProducer;
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import com.onixbyte.captcha.background.impl.DefaultBackgroundProducer;
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import com.onixbyte.captcha.gimpy.GimpyEngine;
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import com.onixbyte.captcha.gimpy.impl.WaterRipple;
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import com.onixbyte.captcha.impl.DefaultCaptchaProducer;
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import com.onixbyte.captcha.noise.NoiseProducer;
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import com.onixbyte.captcha.noise.impl.DefaultNoiseProducer;
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import com.onixbyte.captcha.text.TextProducer;
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import com.onixbyte.captcha.text.WordRenderer;
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import com.onixbyte.captcha.text.impl.DefaultTextProducer;
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import com.onixbyte.captcha.text.impl.DefaultWordRenderer;
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import javax.imageio.ImageIO;
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import java.awt.*;
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import java.awt.image.BufferedImage;
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import java.io.File;
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import java.io.IOException;
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public class CaptchaExample {
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public static void main(String[] args) throws IOException {
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// Create a CAPTCHA producer with default configurations
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Producer captcha = DefaultCaptchaProducer.builder().build();
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// Generate text and create the image
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String captchaText = captcha.createText();
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BufferedImage captchaImage = captcha.createImage(captchaText);
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// Save the image to a file
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ImageIO.write(captchaImage, "png", new File("captcha.png"));
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System.out.println("CAPTCHA text: " + captchaText);
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}
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}
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```
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This generates a CAPTCHA image with a 6-character random text and saves it as a PNG file.
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## License
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Captcha is open-source software released under the MIT License.
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