diff --git a/txw-sso/txw-sso-service-biz/src/main/java/com/css/txw/sso/service/verify/VerifyServiceImpl.java b/txw-sso/txw-sso-service-biz/src/main/java/com/css/txw/sso/service/verify/VerifyServiceImpl.java
index 7ceb123..df6145a 100644
--- a/txw-sso/txw-sso-service-biz/src/main/java/com/css/txw/sso/service/verify/VerifyServiceImpl.java
+++ b/txw-sso/txw-sso-service-biz/src/main/java/com/css/txw/sso/service/verify/VerifyServiceImpl.java
@@ -61,12 +61,13 @@ public class VerifyServiceImpl implements VerifyService {
 
     @Override
     public CommonResult<Map<String, String>> getCaptcha(String remoteId) {
-        String code = lineCaptcha.getCode();
+        cn.hutool.captcha.CircleCaptcha circleCaptcha = (cn.hutool.captcha.CircleCaptcha) lineCaptcha;
+        String code = circleCaptcha.getCode();
         String uuid = IdUtil.fastSimpleUUID();
 
         ByteArrayOutputStream baos = new ByteArrayOutputStream();
         try {
-            ImageIO.write(lineCaptcha.getImage(), "png", baos);
+            ImageIO.write(circleCaptcha.getImage(), "png", baos);
         } catch (IOException e) {
             throw new RuntimeException("生成验证码图片失败", e);
         }