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README
Apache-2.0

CAPTCHA

Build Status GitHub GitHub release (latest by date)

简介

CAPTCHA 是一个基于 Spring Boot 框架的验证码框架,它通过 AOP 的方式完成包含验证码生成、发送、存储等验证码相关业务,以避免与业务代码耦合。 开发者可以轻松地通过不同组件的组合来完成验证业务,同时可以进行自定义实现以应对自身的业务需求(例如邮箱验证码、短信验证码)。

示例

目录

快速入门

下面将演示如何实现字符型图片验证码业务,在开始之前请先创建一个 Spring Boot 的 Web 项目。

添加依赖

在 Maven 项目的 pom.xml 文件中添加依赖:

<dependency>
    <groupId>cn.dustlight.captcha</groupId>
    <artifactId>captcha-core</artifactId>
    <version>1.0.1</version>
</dependency>

启用 CAPTCHA

添加 @EnableCaptcha 注解。

package com.example.demo;

import cn.dustlight.captcha.annotations.*;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
@EnableCaptcha // 启用 CAPTCHA
public class DemoApplication {

    public static void main(String[] args) {
        SpringApplication.run(DemoApplication.class, args);
    }

}

创建 Controller

创建 TestController.java 并创建两个方法分别用于生产验证码和消费验证码。

package com.example.demo;

import cn.dustlight.captcha.annotations.CodeValue;
import cn.dustlight.captcha.annotations.SendCode;
import cn.dustlight.captcha.annotations.VerifyCode;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class TestController {

    private final Log log = LogFactory.getLog(TestController.class.getSimpleName());

    /**
     * 获取验证码。
     * <p>
     * 方法的注解 '@SendCode' 表示此方法执行之前将生成验证码并进行发送。
     *
     * @param code 生成的验证码,通过注解 '@CodeValue' 传入
     */
    @RequestMapping("/captcha")
    @SendCode
    public void captcha(@CodeValue String code) {
        // 在此处进行自定义的业务,验证码的生成、发送与储存已由注解 '@SendCode' 完成。
        log.info(code);
    }

    /**
     * 消费验证码
     * <p>
     * 方法的注解 '@VerifyCode' 表示此方法执行之前先进行验证码验证。
     *
     * @param code 参数中的验证码,通过注解 '@CodeValue' 表示此参数为需要被验证的参数。
     * @return
     */
    @RequestMapping("/")
    @VerifyCode
    public String index(@CodeValue String code) {
        // 在此处进行自定义的业务,验证码的验证以及销毁已由注解 '@VerifyCode' 完成。
        return String.format("Hello World! (%s)", code);
    }
}

在访问注解 @SendCode 所标注的方法 captcha 之前,会生成随机字符串验证码并以图片形式发送。 访问注解 @VerifyCode 所标注的方法 index 前会对参数中的验证码进行验证,成功验证后才会执行 index 方法的业务。

原理

CAPTCHA 基于面向切面编程(AOP)思想,将验证码业务划分为两个切面:

  • @SendCode
    1. 生成验证码
    2. 储存验证码
    3. 发送验证码
  • @VerifyCode
    1. 读取验证码
    2. 进行验证

同时将验证码业务抽象为下面几个接口:

  • Code —— 验证码
  • CodeGenerator —— 生成器
  • CodeSender —— 发送器
  • CodeStore —— 储存器
  • CodeVerifier —— 验证器

核心模块

captcha-core

Sonatype Nexus (Snapshots) Sonatype Nexus (Snapshots)

定义各种注解、接口、异常类,并提供默认实现类。

拓展模块

redis-store

Sonatype Nexus (Snapshots) Sonatype Nexus (Snapshots)

提供基于 Redis 的验证码存储功能。

tencent-sms

Sonatype Nexus (Snapshots) Sonatype Nexus (Snapshots)

提供基于腾讯云短信服务的验证码发送功能。

aliyun-sms

Sonatype Nexus (Snapshots) Sonatype Nexus (Snapshots)

提供基于阿里云短信服务的验证码发送功能。

reCAPTCHA

Sonatype Nexus (Snapshots) Sonatype Nexus (Snapshots)

集成谷歌 reCAPTCHA 人机识别服务。

email-sender

Sonatype Nexus (Snapshots) Sonatype Nexus (Snapshots)

集成邮箱验证码发送功能。

获取帮助

如果需要报告问题或者功能需求,请在Github中 创建issue 。若有其他问题或建议,请发送电子邮件至 hansin@dustlight.cn

常见问题

邮箱验证码参数获取失败

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简介

CAPTCHA 是一个基于 Spring Boot 框架的验证码框架,它通过 AOP 的方式完成包含验证码生成、发送、存储等验证码相关业务,以避免与业务代码耦合。 开发者可以轻松地通过不同组件的组合来完成验证业务,同时可以进行自定义实现以应对自身的业务需求(例如邮箱验证码、短信验证码)。 展开 收起
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