ADD file via upload

src/main/java/com/dao/NxSystemFileInfoDao.java

@@ -0,0 +1,14 @@
+package com.example.dao;
+
+import com.example.entity.NxSystemFileInfo;
+import org.apache.ibatis.annotations.Param;
+import org.springframework.stereotype.Repository;
+import tk.mybatis.mapper.common.Mapper;
+
+import java.util.List;
+
+@Repository
+public interface NxSystemFileInfoDao extends Mapper<NxSystemFileInfo> {
+    List<NxSystemFileInfo> findByName(@Param("name") String name);
+    NxSystemFileInfo findByFileName(@Param("name") String name);
+}