8.10

src/main/java/com/teaching/backend/mapper/chapter/TemporaryChapterMapper.java

@@ -6,6 +6,7 @@ import com.baomidou.mybatisplus.core.mapper.BaseMapper;
 import com.teaching.backend.model.entity.chapter.Chapter;
 import com.teaching.backend.model.entity.chapter.TemporaryChapter;
 import io.lettuce.core.dynamic.annotation.Param;
+import org.apache.ibatis.annotations.Mapper;
 import org.apache.ibatis.annotations.Select;
 
 import java.util.List;

src/main/java/com/teaching/backend/utils/Chapter/ExcelParser.java

@@ -10,6 +10,7 @@ package com.teaching.backend.utils.Chapter;
  * @Version 1.0
  */
 
+import com.teaching.backend.mapper.chapter.TemporaryChapterMapper;
 import com.teaching.backend.service.chapter.IChapterService;
 import org.apache.poi.openxml4j.opc.OPCPackage;
 import org.apache.poi.xssf.eventusermodel.XSSFReader;
@@ -31,7 +32,8 @@ import java.util.List;
  */
 @Component
 public class ExcelParser {
-
+    @Autowired
+    TemporaryChapterMapper temporaryChapterMapper;
     @Autowired
     IChapterService chapterService;
 
@@ -44,7 +46,7 @@ public class ExcelParser {
             StylesTable styles = reader.getStylesTable();
             XMLReader parser = XMLReaderFactory.createXMLReader();
 
-            SheetHandler sheetHandler = new SheetHandler(chapterService, courseId);
+            SheetHandler sheetHandler = new SheetHandler(temporaryChapterMapper, chapterService, courseId);
             parser.setContentHandler(new XSSFSheetXMLHandler(styles, sst, sheetHandler, false));
 
             XSSFReader.SheetIterator sheets = (XSSFReader.SheetIterator) reader.getSheetsData();

src/main/java/com/teaching/backend/utils/Chapter/SheetHandler.java

@@ -1,12 +1,13 @@
 package com.teaching.backend.utils.Chapter;
 
 import com.teaching.backend.common.ErrorCode;
-import com.teaching.backend.common.ResultUtils;
 import com.teaching.backend.exception.BusinessException;
+import com.teaching.backend.mapper.chapter.TemporaryChapterMapper;
 import com.teaching.backend.model.dto.chapter.ChapterDTO;
 import com.teaching.backend.service.chapter.IChapterService;
 import org.apache.poi.xssf.eventusermodel.XSSFSheetXMLHandler;
 import org.apache.poi.xssf.usermodel.XSSFComment;
+import org.springframework.transaction.annotation.Transactional;
 
 import java.util.*;
 
@@ -22,6 +23,9 @@ import java.util.*;
 
 public class SheetHandler implements XSSFSheetXMLHandler.SheetContentsHandler {
 
+
+   private final TemporaryChapterMapper temporaryChapterMapper;
+
     private final IChapterService chapterService;
     private final String courseId;
     private ChapterDTO chapterDTO;
@@ -30,7 +34,8 @@ public class SheetHandler implements XSSFSheetXMLHandler.SheetContentsHandler {
     private boolean hasErrors = false;
     private List<ChapterDTO> collectedChapters = new ArrayList<>();
 
-    public SheetHandler(IChapterService chapterService, String courseId) {
+    public SheetHandler(TemporaryChapterMapper temporaryChapterMapper, IChapterService chapterService, String courseId) {
+        this.temporaryChapterMapper = temporaryChapterMapper;
         this.chapterService = chapterService;
         this.courseId = courseId;
     }
@@ -58,6 +63,7 @@ public class SheetHandler implements XSSFSheetXMLHandler.SheetContentsHandler {
             collectedChapters.add(chapterDTO);
         }
     }
+    @Transactional(rollbackFor = Exception.class)
 
     public List<String> finalizeProcess() {
         if (hasErrors) {
@@ -70,25 +76,30 @@ public class SheetHandler implements XSSFSheetXMLHandler.SheetContentsHandler {
             }
         }
 
-        for (ChapterDTO chapter : collectedChapters) {
-            if (chapter.getParentExcelId() != null && chapter.getParentExcelId() != 0) {
-                saveToTemporaryTable(chapter);
+
+            for (ChapterDTO chapter : collectedChapters) {
+                if (chapter.getParentExcelId() != null && chapter.getParentExcelId() != 0) {
+                    saveToTemporaryTable(chapter);
+                }
             }
-        }
 
 
         chapterService.moveDataFromTemporaryToFinal();
         return Collections.emptyList();
     }
 
-    private void saveToTemporaryTable(ChapterDTO chapterDTO) {
+
+   private void saveToTemporaryTable(ChapterDTO chapterDTO) {
         Long pid = chapterDTO.getParentExcelId();
         if (pid != null && pid != 0) {
+
             Long parentId = excelIdToDatabaseIdMap.get(pid);
             if (parentId != null) {
                 chapterDTO.setPid(parentId);
             } else {
+                temporaryChapterMapper.deleteAll();
                 throw new BusinessException(ErrorCode.PARAMS_ERROR, "未找到父章节，Excel ID 为: " + pid);
+
             }
         }
 
@@ -105,12 +116,16 @@ public class SheetHandler implements XSSFSheetXMLHandler.SheetContentsHandler {
         if (chapterDTO.getName() == null || chapterDTO.getName().isEmpty()) {
             errors.add("编号："+chapterDTO.getExcelId()+"的章节名字不能为空");
         }
+
         if (chapterDTO.getExcelId() == null || chapterDTO.getExcelId() <= 0) {
             errors.add("编号不能小于0");
         }
         if (chapterDTO.getParentExcelId() == null || chapterDTO.getParentExcelId() < 0) {
             errors.add("编号："+chapterDTO.getExcelId()+"的上级编号不能小于0");
         }
+        if (chapterDTO.getParentExcelId().equals(chapterDTO.getExcelId())) {
+            errors.add("编号："+chapterDTO.getExcelId()+"的  上级编号不能等于其自身");
+        }
         return errors;
     }