Merge remote-tracking branch 'origin/demo_' into demo_

platform-dao/src/main/java/com/platform/dao/dto/preparation/PreparationDTO.java

@@ -1,17 +1,15 @@
 package com.platform.dao.dto.preparation;
 
 import com.platform.common.bean.BaseDTO;
-import com.platform.common.validation.group.UpdateGroup;
 import com.platform.dao.entity.upms.SysFile;
 import lombok.Data;
 import lombok.EqualsAndHashCode;
 import lombok.experimental.Accessors;
 
-import javax.validation.constraints.*;
 import java.io.Serializable;
-import java.time.LocalDateTime;
-import java.time.LocalDate;
 import java.math.BigDecimal;
+import java.time.LocalDate;
+import java.time.LocalDateTime;
 import java.util.List;
 
 /**