diff --git a/mybatis-plus-join-test/test-join/src/main/java/com/github/yulichang/test/join/repository/UserCrudRepository.java b/mybatis-plus-join-test/test-join/src/main/java/com/github/yulichang/test/join/repository/UserCrudRepository.java
new file mode 100644
index 0000000..9201bff
--- /dev/null
+++ b/mybatis-plus-join-test/test-join/src/main/java/com/github/yulichang/test/join/repository/UserCrudRepository.java
@@ -0,0 +1,11 @@
+package com.github.yulichang.test.join.repository;
+
+import com.github.yulichang.repository.JoinCrudRepository;
+import com.github.yulichang.test.join.entity.UserDO;
+import com.github.yulichang.test.join.mapper.UserMapper;
+import org.springframework.stereotype.Repository;
+
+@Repository
+public class UserCrudRepository extends JoinCrudRepository<UserMapper, UserDO> {
+
+}
diff --git a/mybatis-plus-join-test/test-join/src/test/java/com/github/yulichang/test/join/unit/StringColumTest.java b/mybatis-plus-join-test/test-join/src/test/java/com/github/yulichang/test/join/unit/StringColumTest.java
index 363ca40..a0600cc 100644
--- a/mybatis-plus-join-test/test-join/src/test/java/com/github/yulichang/test/join/unit/StringColumTest.java
+++ b/mybatis-plus-join-test/test-join/src/test/java/com/github/yulichang/test/join/unit/StringColumTest.java
@@ -3,7 +3,7 @@ package com.github.yulichang.test.join.unit;
 import com.github.yulichang.test.join.dto.UserDTO;
 import com.github.yulichang.test.join.entity.AddressDO;
 import com.github.yulichang.test.join.entity.UserDO;
-import com.github.yulichang.test.join.mapper.UserMapper;
+import com.github.yulichang.test.join.repository.UserCrudRepository;
 import com.github.yulichang.test.util.Reset;
 import com.github.yulichang.test.util.ThreadLocalUtils;
 import com.github.yulichang.wrapper.MPJLambdaWrapper;
@@ -19,7 +19,7 @@ import java.util.List;
 public class StringColumTest {
 
     @Autowired
-    private UserMapper userMapper;
+    private UserCrudRepository userCrudRepository;
 
     @BeforeEach
     void setUp() {
@@ -33,7 +33,7 @@ public class StringColumTest {
         ThreadLocalUtils.set("SELECT (SELECT id FROM `user` u WHERE u.id = t.id) id, t.`name` AS PName, t.`name` PName, t.`name`," +
                 " (SELECT id FROM `user` u WHERE u.id = t.id), t1.id AS joina_id, t1.user_id, t1.area_id, t1.tel, " +
                 "t1.address, t1.del FROM `user` t LEFT JOIN address t1 ON (t1.user_id = t.id) WHERE t.del = false AND t1.del = false");
-        List<UserDTO> l3 = userMapper.selectJoinList(UserDTO.class, new MPJLambdaWrapper<UserDO>()
+        List<UserDTO> l3 = userCrudRepository.selectJoinList(UserDTO.class, new MPJLambdaWrapper<UserDO>()
                 .select("(select id from `user` u where u.id = t.id) id")
                 .select("t.`name` as PName")
                 .select("t.`name` PName")