diff --git a/src/main/java/com/xit/core/oauth2/api/dao/RefreshTokenDao.java b/src/main/java/com/xit/core/oauth2/api/dao/RefreshTokenDao.java
index d337603..a512152 100644
--- a/src/main/java/com/xit/core/oauth2/api/dao/RefreshTokenDao.java
+++ b/src/main/java/com/xit/core/oauth2/api/dao/RefreshTokenDao.java
@@ -3,9 +3,12 @@ package com.xit.core.oauth2.api.dao;
 import com.xit.core.oauth2.api.entity.RefreshToken;
 import com.xit.core.util.DBUtils;
 import com.xit.core.util.mpower.MpowerUtils;
+import org.springframework.stereotype.Repository;
 
+import javax.annotation.Resource;
 import java.util.Optional;
 
+@Repository
 public class RefreshTokenDao {
     private static final String sqlXmlFile = "sql/refreshToken-mapper";