飞行棋品牌必填

src/main/java/com/taauav/admin/entity/TauvEquipment.java

 import org.hibernate.validator.constraints.Length;
 import org.springframework.format.annotation.DateTimeFormat;
 
+import javax.validation.constraints.NotBlank;
 import javax.validation.constraints.NotEmpty;
 
 /**
     /**
      * 品牌
      */
+    @NotEmpty(message = "品牌不能为空")
     @Length(max = 100, message = "品牌长度不能超过100个字")
     private String brand;