添加log，调试获取短信验证码的图片校验码超时后，使用原captchaId总能校验通过问题

src/main/java/cn/quantgroup/xyqb/config/captcha/RedisCaptchaStore.java

@@ -101,7 +101,9 @@ public class RedisCaptchaStore implements CaptchaStore {
 
   private Captcha getFromRedisThenDel(String captchaId) {
     String captcharKey = buildCaptcharKey(captchaId);
+    Long expire = stringRedisTemplate.getExpire(captcharKey, TimeUnit.SECONDS);
     Object value = stringRedisTemplate.opsForValue().get(captcharKey);
+    LOGGER.info("captchaId={},captchaCode={},expire={}秒", captcharKey, value, expire);
     stringRedisTemplate.delete(captcharKey);
     return value != null ? new SimpleCaptcha(captchaId, String.valueOf(value)) : null;
   }

src/main/java/cn/quantgroup/xyqb/thirdparty/jcaptcha/SimpleCaptcha.java

@@ -34,6 +34,9 @@ public class SimpleCaptcha extends ImageCaptcha {
   }
 
   private Boolean validateResponse(String response) {
+    if(StringUtils.isBlank(this.response) || StringUtils.isBlank(response)){
+      return false;
+    }
     return StringUtils.equals(this.response, response);
   }
 

src/test/java/login/TestStringCode.java

+package login;
+
+import java.nio.charset.Charset;
+import java.util.Base64;
+
+public class TestStringCode {
+
+	public static void main(String[] args) {
+        System.out.println(base64("13511112222", "000000"));
+        System.out.println(base64("18022223333", "000000"));
+	}
+
+	final static String AUTHORIZATION = "authorization";
+	final static String PREFIX = "Basic ";
+    /*
+     * 4.153
+     * 13576450525	123456	318e235d3e52648b236faa3f748000d5
+     * 13724823305	123456	318e235d3e52648b236faa3f748000d5
+     *
+     * 4.155
+     * 13511112222	000000	c8937b92506c0e2918de053dea69edd3
+     * 18022223333	000000	c8937b92506c0e2918de053dea69edd3
+     */
+	final static String base64(String account, String password) {
+		String authorization = PREFIX + new String(Base64.getEncoder().encodeToString((account+":"+password).getBytes(Charset.forName("UTF-8"))));
+		return authorization;
+	}
+
+}