1.依賴

導入hutool工具包用于創建驗證碼

         <dependency><groupId>cn.hutool</groupId><artifactId>hutool-all</artifactId><version>5.5.2</version></dependency>

2.測試

生成一個驗證碼圖片（生成的圖片瀏覽器可以識別）

    public static void main(String[] args) {//1.生成驗證碼CircleCaptcha circleCaptcha = CaptchaUtil.createCircleCaptcha(130, 50, 4, 30);//2.獲取驗證碼codeString code = circleCaptcha.getCode();//3.獲取驗證碼圖片的base64編碼String base64 = circleCaptcha.getImageBase64Data();//4.生成一個唯一的keyString key = UUID.randomUUID().toString();System.out.println("key = " + key);System.out.println("code = " + code);System.out.println( base64);}

?隨機生成的圖片驗證碼

3.redis

將對應的數據存入redis當中去

package com.atguigu.spzx.manager.service.imp;import cn.hutool.captcha.CaptchaUtil;
import cn.hutool.captcha.CircleCaptcha;
import com.atguigu.spzx.manager.service.ValidateCodeService;
import com.atguigu.spzx.model.vo.system.ValidateCodeVo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Service;import java.util.UUID;/*** @version: java version 1.8* @Author: Mr Orange* @description:* @date: 2025-02-04 20:38*/
@Service
public class ValidateCodeServiceImpl implements ValidateCodeService {@AutowiredRedisTemplate<String,String> redisTemplate;@Overridepublic ValidateCodeVo generateValidateCode() {//1.生成驗證碼CircleCaptcha circleCaptcha = CaptchaUtil.createCircleCaptcha(130, 50, 4, 30);//4.生成一個唯一的keyString codeKey = UUID.randomUUID().toString().replace("-", "");//2.獲取驗證碼codeString code = circleCaptcha.getCode();System.out.println("code = " + code);//3.獲取驗證碼圖片的base64編碼String baseimg = circleCaptcha.getImageBase64Data();//后端在redis保存key跟coderedisTemplate.opsForValue().set(codeKey,code);//前端返回key跟imgValidateCodeVo validateCodeVo = new ValidateCodeVo();validateCodeVo.setCoderKey(codeKey);validateCodeVo.setCoderValue(baseimg);return validateCodeVo;}
}