From 355f72f2cf89ec9dce6671c18301400dc1b01711 Mon Sep 17 00:00:00 2001
From: luogw <3132758203@qq.com>
Date: Fri, 27 Feb 2026 11:37:39 +0800
Subject: [PATCH] =?UTF-8?q?=E7=A9=BA=E6=8C=87=E9=92=88?=
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---
 .../impl/GetStatisticsKnowledgePointDomainServiceImpl.java    | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/main/java/com/project/information/domain/service/impl/GetStatisticsKnowledgePointDomainServiceImpl.java b/src/main/java/com/project/information/domain/service/impl/GetStatisticsKnowledgePointDomainServiceImpl.java
index cbc8a74..0d61ce7 100644
--- a/src/main/java/com/project/information/domain/service/impl/GetStatisticsKnowledgePointDomainServiceImpl.java
+++ b/src/main/java/com/project/information/domain/service/impl/GetStatisticsKnowledgePointDomainServiceImpl.java
@@ -1,5 +1,6 @@
 package com.project.information.domain.service.impl;
 
+import com.project.base.domain.exception.BusinessErrorException;
 import com.project.base.domain.result.Result;
 import com.project.information.domain.dto.KnowledgePointStatisticsDTO;
 import com.project.information.domain.entity.InformationEntity;
@@ -21,6 +22,9 @@ public class GetStatisticsKnowledgePointDomainServiceImpl implements GetStatisti
     @Override
     public Result<KnowledgePointStatisticsDTO> getStatistics(Long subLineId) throws Exception {
         KnowledgePointStatisticsDTO dto = knowledgePointMapper.selectBySubLineId(subLineId);
+        if(dto==null){
+            throw new BusinessErrorException("子产品线不存在");
+        }
         List<Long> relatedDocumentList = informationBaseService.lambdaQuery().select(InformationEntity::getId)
                 .eq(InformationEntity::getSubLineId, subLineId).list()
                 .stream().map(InformationEntity::getId).toList();