代码优化

src/main/java/com/diagbot/dto/LevelStatisticsTZDTO.java

@@ -11,7 +11,7 @@ import lombok.Setter;
  */
 @Getter
 @Setter
-public class LevelStatisticsTZDTO extends LevelStatisticsDTO{
+public class LevelStatisticsTZDTO extends LevelStatisticsDTO {
     /**
      * 上级科室id（上级科室编码）
      */
@@ -19,6 +19,6 @@ public class LevelStatisticsTZDTO extends LevelStatisticsDTO{
     /**
      * 上级科室名称
      */
-    @Excel(name = "科室系统",width = 20, orderNum = "1",replace = { "内科系统_内科", "外科系统_外科" })
+    @Excel(name = "科室系统", width = 20, orderNum = "1", replace = { "内科系统_内科", "外科系统_外科", "_null" })
     private String deptClass;
 }