diff --git a/ruoyi-common/src/main/java/com/ruoyi/common/core/domain/model/LoginBody.java b/ruoyi-common/src/main/java/com/ruoyi/common/core/domain/model/LoginBody.java
index a1f8b83379360de53f713a3ab57e9e7724a29a7f..583b7a61ec686a4d09883aed924db0e6b51a3249 100644
--- a/ruoyi-common/src/main/java/com/ruoyi/common/core/domain/model/LoginBody.java
+++ b/ruoyi-common/src/main/java/com/ruoyi/common/core/domain/model/LoginBody.java
@@ -25,7 +25,7 @@ public class LoginBody
     /**
      * 唯一标识
      */
-    private String uuid = "";
+    private String uuid;
 
     public String getUsername()
     {
diff --git a/ruoyi-framework/src/main/java/com/ruoyi/framework/web/service/SysRegisterService.java b/ruoyi-framework/src/main/java/com/ruoyi/framework/web/service/SysRegisterService.java
index 35a425c7d712a40c765584a2ae2e7084a4d0f179..c7de444ee79ec6b3620bb67ed38b0c8724cb8c11 100644
--- a/ruoyi-framework/src/main/java/com/ruoyi/framework/web/service/SysRegisterService.java
+++ b/ruoyi-framework/src/main/java/com/ruoyi/framework/web/service/SysRegisterService.java
@@ -100,7 +100,7 @@ public class SysRegisterService
      */
     public void validateCaptcha(String username, String code, String uuid)
     {
-        String verifyKey = Constants.CAPTCHA_CODE_KEY + uuid;
+        String verifyKey = Constants.CAPTCHA_CODE_KEY + StringUtils.nvl(uuid, "");
         String captcha = redisCache.getCacheObject(verifyKey);
         redisCache.deleteObject(verifyKey);
         if (captcha == null)