fix bug 41843 导入--导入的文件为空，页面显示“操作成功”

jero-boot-module-system/src/main/java/com/jero/modules/system/controller/SysDepartController.java

@@ -15,6 +15,7 @@ import com.jero.common.util.ValidUtil;
 import com.jero.modules.system.model.SysDepartExcel;
 import com.jero.modules.system.util.FindsDepartsChildrenUtil;
 import io.swagger.models.auth.In;
+import org.apache.commons.collections.CollectionUtils;
 import org.apache.commons.lang3.StringUtils;
 import org.apache.shiro.SecurityUtils;
 import com.jero.common.api.vo.Result;
@@ -403,14 +404,20 @@ public class SysDepartController {
             params.setNeedSave(true);
 			//导入Excel格式校验，看匹配的字段文本概率
 			Boolean t = ExcelImportCheckUtil.check(file.getInputStream(), SysDepartExcel.class, params,1.0);
+			if (t == null){
+				return Result.error("文件导入失败: 导入数据为空");
+			}
 			if(!t){
-				return Result.error("表头有误！");
+				return Result.error("文件导入失败: 表头有误！");
 			}
             try {
             	// orgCode编码长度
 				int codeLength = YouBianCodeUtil.zhanweiLength;
                 listSysDeparts = ExcelImportUtil.importExcel(file.getInputStream(), SysDepartExcel.class, params);
 				listSysDeparts = listSysDeparts.stream().filter(i -> !oConvertUtils.checkObjAllFieldsIsNull(i)).collect(Collectors.toList());
+				if (CollectionUtils.isEmpty(listSysDeparts)){
+					return Result.error("文件导入失败: 导入数据为空");
+				}
                 //按长度排序
                 Collections.sort(listSysDeparts, new Comparator<SysDepartExcel>() {
                     @Override