refactor: 简化 GIF 验证码为算术验证码(PS:太闪了)

src/main/java/com/youlai/system/filter/VerifyCodeFilter.java

@@ -1,6 +1,6 @@
 package com.youlai.system.filter;
 
-import cn.hutool.core.convert.Convert;
+import cn.hutool.captcha.generator.MathGenerator;
 import cn.hutool.core.util.StrUtil;
 import cn.hutool.extra.spring.SpringUtil;
 import com.youlai.system.common.constant.SecurityConstants;
@@ -10,7 +10,7 @@ import jakarta.servlet.FilterChain;
 import jakarta.servlet.ServletException;
 import jakarta.servlet.http.HttpServletRequest;
 import jakarta.servlet.http.HttpServletResponse;
-import org.springframework.data.redis.core.RedisTemplate;
+import org.springframework.data.redis.core.StringRedisTemplate;
 import org.springframework.security.web.util.matcher.AntPathRequestMatcher;
 import org.springframework.web.filter.OncePerRequestFilter;
 
@@ -35,23 +35,24 @@ public class VerifyCodeFilter extends OncePerRequestFilter {
         // 检验登录接口的验证码
         if (LOGIN_PATH_REQUEST_MATCHER.matches(request)) {
             // 请求中的验证码
-            String requestVerifyCode = request.getParameter(VERIFY_CODE_PARAM_KEY);
+            String userInputCode = request.getParameter(VERIFY_CODE_PARAM_KEY);
 
             // TODO 兼容 2.0.0 无验证码版本，后续移除
-            if (StrUtil.isBlank(requestVerifyCode)) {
+            if (StrUtil.isBlank(userInputCode)) {
                 // 非登录接口放行
                 chain.doFilter(request, response);
                 return;
             }
             // 缓存中的验证码
-            RedisTemplate redisTemplate = SpringUtil.getBean("redisTemplate", RedisTemplate.class);
+            StringRedisTemplate redisTemplate = SpringUtil.getBean("stringRedisTemplate", StringRedisTemplate.class);
             String verifyCodeKey = request.getParameter(VERIFY_CODE_KEY_PARAM_KEY);
-            Object cacheVerifyCode = redisTemplate.opsForValue().get(SecurityConstants.VERIFY_CODE_CACHE_PREFIX + verifyCodeKey);
+            String cacheVerifyCode = redisTemplate.opsForValue().get(SecurityConstants.VERIFY_CODE_CACHE_PREFIX + verifyCodeKey);
             if (cacheVerifyCode == null) {
                 ResponseUtils.writeErrMsg(response, ResultCode.VERIFY_CODE_TIMEOUT);
             } else {
                 // 验证码比对
-                if (StrUtil.equals(requestVerifyCode, Convert.toStr(cacheVerifyCode))) {
+                MathGenerator mathGenerator = new MathGenerator();
+                if (mathGenerator.verify(cacheVerifyCode, userInputCode)) {
                     chain.doFilter(request, response);
                 } else {
                     ResponseUtils.writeErrMsg(response, ResultCode.VERIFY_CODE_ERROR);

src/main/java/com/youlai/system/service/impl/AuthServiceImpl.java

@@ -1,18 +1,18 @@
 package com.youlai.system.service.impl;
 
-import cn.hutool.captcha.CaptchaUtil;
+import cn.hutool.captcha.LineCaptcha;
-import cn.hutool.captcha.GifCaptcha;
+import cn.hutool.captcha.generator.MathGenerator;
 import cn.hutool.core.util.IdUtil;
 import cn.hutool.core.util.StrUtil;
 import com.youlai.system.common.constant.SecurityConstants;
-import com.youlai.system.security.jwt.JwtTokenProvider;
-import com.youlai.system.service.AuthService;
 import com.youlai.system.model.dto.CaptchaResult;
 import com.youlai.system.model.dto.LoginResult;
+import com.youlai.system.security.jwt.JwtTokenProvider;
+import com.youlai.system.service.AuthService;
 import io.jsonwebtoken.Claims;
 import jakarta.servlet.http.HttpServletRequest;
 import lombok.RequiredArgsConstructor;
-import org.springframework.data.redis.core.RedisTemplate;
+import org.springframework.data.redis.core.StringRedisTemplate;
 import org.springframework.security.authentication.AuthenticationManager;
 import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
 import org.springframework.security.core.Authentication;
@@ -33,7 +33,7 @@ import java.util.concurrent.TimeUnit;
 public class AuthServiceImpl implements AuthService {
 
     private final AuthenticationManager authenticationManager;
-    private final RedisTemplate redisTemplate;
+    private final StringRedisTemplate redisTemplate;
     private final JwtTokenProvider jwtTokenProvider;
 
     /**
@@ -83,10 +83,12 @@ public class AuthServiceImpl implements AuthService {
      */
     @Override
     public CaptchaResult getCaptcha() {
-        // 获取验证码
+        
-        GifCaptcha captcha = CaptchaUtil.createGifCaptcha(120, 40, 4); // 宽、高、位数
+        MathGenerator mathGenerator=new MathGenerator(1);
-        String captchaCode = captcha.getCode(); // 验证码
+        LineCaptcha lineCaptcha =new LineCaptcha(480,120,4,20);
-        String captchaBase64 = captcha.getImageBase64Data(); // 验证码图片Base64
+        lineCaptcha.setGenerator(mathGenerator);
+        String captchaCode = lineCaptcha.getCode(); // 验证码
+        String captchaBase64 = lineCaptcha.getImageBase64Data(); // 验证码图片Base64
 
         // 验证码文本缓存至Redis，用于登录校验
         String verifyCodeKey = IdUtil.fastSimpleUUID();