8.21

src/main/java/com/teaching/backend/controller/chapter/ChapterController2.java

@@ -15,7 +15,9 @@ import org.springframework.web.bind.annotation.*;
 import org.springframework.web.multipart.MultipartFile;
 
 import javax.servlet.http.HttpServletResponse;
+import javax.validation.Valid;
 import java.io.IOException;
+import java.math.BigDecimal;
 import java.time.LocalDateTime;
 import java.util.List;
 
@@ -61,9 +63,13 @@ public BaseResponse<List<Chapter>> getCourseChapters2(@RequestParam String cours
 
     @ApiOperation("添加章节")
     @PostMapping("/add")
-    public BaseResponse<String> addChapter2(@RequestBody ChapterDTO chapterDTO){
-        chapterService.saveChapter(chapterDTO);
-        return ResultUtils.success("添加成功！！！！！！！！");
+    public BaseResponse<String> addChapter2(@Valid @RequestBody ChapterDTO chapterDTO) {
+        BigDecimal remainingHours = chapterService.saveChapter(chapterDTO);
+        if (remainingHours.compareTo(BigDecimal.ZERO) == 0) {
+            return ResultUtils.success("添加成功！所有学时分配完成");
+        } else {
+            return ResultUtils.success("添加成功！还剩下" + remainingHours + "学时待分配");
+        }
     }
 
     @ApiOperation("插入章节")

src/main/java/com/teaching/backend/controller/thumb/SeCourseThumbController.java

@@ -1,65 +1,65 @@
-//package com.teaching.backend.controller.thumb;
-//
-//import com.teaching.backend.common.BaseResponse;
-//import com.teaching.backend.common.ErrorCode;
-//import com.teaching.backend.exception.BusinessException;
-//import com.teaching.backend.model.dto.thumb.coursethumb.CourseThumbAddRequest;
-//import com.teaching.backend.model.dto.thumb.coursethumb.CourseThumbAllRequest;
-//import com.teaching.backend.service.thumb.SeCourseThumbService;
-//import lombok.extern.slf4j.Slf4j;
-//import org.apache.commons.lang3.StringUtils;
-//import org.springframework.web.bind.annotation.PostMapping;
-//import org.springframework.web.bind.annotation.RequestBody;
-//import org.springframework.web.bind.annotation.RequestMapping;
-//import org.springframework.web.bind.annotation.RestController;
-//
-//import javax.annotation.Resource;
-//
-///**
-// * @Author:youhang
-// * @Date:2024-05-30-20:22
-// * @Description:
-// */
-//@RestController
-//@RequestMapping("/api/course_thumb")
-//@Slf4j
-//public class SeCourseThumbController {
-//
-//    @Resource
-//    private SeCourseThumbService seCourseThumbService;
-//
-//
-//    /**
-//     * 点赞/取消点赞
-//     *
-//     * @param courseThumbAddRequest
-//     * @return result 执行情况
-//     */
-//    @PostMapping("/")
-//    // HttpServletRequest request 在一个fitter里面进行鉴权操作
-//    public BaseResponse<Boolean> doThumb(@RequestBody CourseThumbAddRequest courseThumbAddRequest) {
-//
-//        return seCourseThumbService.doCourseThumb(courseThumbAddRequest.getCourseId(), courseThumbAddRequest.getUserId());
-//
-//    }
-//
-//
-//    /**
-//     * 课程点赞总数
-//     *
-//     * @param courseThumbAddRequest
-//     * @return result 课程点赞总数
-//     */
-//    @PostMapping("/count")
-//    //  HttpServletRequest request 在一个fitter里面进行鉴权操作
-//    public BaseResponse<Long> thumbCount(@RequestBody CourseThumbAddRequest courseThumbAddRequest) {
-//        if (StringUtils.isAnyBlank(courseThumbAddRequest.getCourseId())) {
-//            throw new BusinessException(ErrorCode.PARAMS_ERROR, "请求参数不能为空");
-//        }
-//
-//        return seCourseThumbService.thumbCount(courseThumbAddRequest.getCourseId());
-//
-//    }
-//
-//
-//}
+package com.teaching.backend.controller.thumb;
+
+import com.teaching.backend.common.BaseResponse;
+import com.teaching.backend.common.ErrorCode;
+import com.teaching.backend.exception.BusinessException;
+import com.teaching.backend.model.dto.thumb.coursethumb.CourseThumbAddRequest;
+import com.teaching.backend.model.dto.thumb.coursethumb.CourseThumbAllRequest;
+import com.teaching.backend.service.thumb.SeCourseThumbService;
+import lombok.extern.slf4j.Slf4j;
+import org.apache.commons.lang3.StringUtils;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import javax.annotation.Resource;
+
+/**
+ * @Author:youhang
+ * @Date:2024-05-30-20:22
+ * @Description:
+ */
+@RestController
+@RequestMapping("/api/course_thumb")
+@Slf4j
+public class SeCourseThumbController {
+
+    @Resource
+    private SeCourseThumbService seCourseThumbService;
+
+
+    /**
+     * 点赞/取消点赞
+     *
+     * @param courseThumbAddRequest
+     * @return result 执行情况
+     */
+    @PostMapping("/")
+    // HttpServletRequest request 在一个fitter里面进行鉴权操作
+    public BaseResponse<Boolean> doThumb(@RequestBody CourseThumbAddRequest courseThumbAddRequest) {
+
+        return seCourseThumbService.doCourseThumb(courseThumbAddRequest.getCourseId(), courseThumbAddRequest.getUserId());
+
+    }
+
+
+    /**
+     * 课程点赞总数
+     *
+     * @param courseThumbAddRequest
+     * @return result 课程点赞总数
+     */
+    @PostMapping("/count")
+    //  HttpServletRequest request 在一个fitter里面进行鉴权操作
+    public BaseResponse<Long> thumbCount(@RequestBody CourseThumbAddRequest courseThumbAddRequest) {
+        if (StringUtils.isAnyBlank(courseThumbAddRequest.getCourseId())) {
+            throw new BusinessException(ErrorCode.PARAMS_ERROR, "请求参数不能为空");
+        }
+
+        return seCourseThumbService.thumbCount(courseThumbAddRequest.getCourseId());
+
+    }
+
+
+}

src/main/java/com/teaching/backend/exception/GlobalExceptionHandler.java

@@ -5,12 +5,26 @@ import com.teaching.backend.common.ErrorCode;
 import com.teaching.backend.common.ResultUtils;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
+import org.springframework.validation.FieldError;
+import org.springframework.web.bind.MethodArgumentNotValidException;
 import org.springframework.web.bind.annotation.ExceptionHandler;
 import org.springframework.web.bind.annotation.RestControllerAdvice;
 
+import java.util.HashMap;
+import java.util.Map;
+
 @RestControllerAdvice
 public class GlobalExceptionHandler {
-
+    @ExceptionHandler(MethodArgumentNotValidException.class)
+    public ResponseEntity<Map<String, String>> handleValidationExceptions(MethodArgumentNotValidException ex) {
+        Map<String, String> errors = new HashMap<>();
+        ex.getBindingResult().getAllErrors().forEach((error) -> {
+            String fieldName = ((FieldError) error).getField();
+            String errorMessage = error.getDefaultMessage();
+            errors.put(fieldName, errorMessage);
+        });
+        return ResponseEntity.status(HttpStatus.BAD_REQUEST).body(errors);
+    }
     @ExceptionHandler(BusinessException.class)
     public ResponseEntity<ErrorResponse> handleBusinessException(BusinessException ex) {
         ErrorResponse errorResponse = new ErrorResponse(ex.getCode(), ex.getMessage());

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

@@ -7,6 +7,7 @@ import io.lettuce.core.dynamic.annotation.Param;
 import org.apache.ibatis.annotations.Select;
 import org.apache.ibatis.annotations.Update;
 
+import java.math.BigDecimal;
 import java.util.List;
 
 /**
@@ -33,4 +34,7 @@ public interface ChapterMapper extends BaseMapper<Chapter> {
     Chapter selectByNameAndCourseId(@Param("name") String name, @Param("courseId") String courseId);
 @Select("select pid ,course_id,total_class_hours from chapter where pid = #{chapterId} and course_id = #{courseId} ")
     List<Chapter> selectByIdAndPid(@Param("chapterId") Long chapterId, @Param("courseId")String courseId);
+
+    @Select("select total_class_hours from chapter where id=#{pid}")
+    BigDecimal getChapterHours(@Param("pid") Long pid);
 }

src/main/java/com/teaching/backend/mapper/courses/CoursesMapper.java

@@ -3,12 +3,14 @@ package com.teaching.backend.mapper.courses;
 import com.baomidou.mybatisplus.core.mapper.BaseMapper;
 import com.baomidou.mybatisplus.core.metadata.IPage;
 import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
+import com.teaching.backend.model.entity.chapter.Chapter;
 import com.teaching.backend.model.entity.courses.Courses;
 import com.teaching.backend.model.vo.courses.CoursesVO;
 import org.apache.ibatis.annotations.Mapper;
 import org.apache.ibatis.annotations.Param;
 import org.apache.ibatis.annotations.Select;
 
+import java.math.BigDecimal;
 import java.util.List;
 
 /**
@@ -24,5 +26,7 @@ public interface CoursesMapper extends BaseMapper<Courses> {
     @Select("SELECT * FROM courses LIMIT #{start}, #{pageSize}")
     List<Courses> getItemsByPage(@Param("start") int start, @Param("pageSize") int pageSize);
 
+    @Select("select classhours from courses where id=#{id}")
+    BigDecimal getClassHoursById(@Param("id") String id);
 
 }

src/main/java/com/teaching/backend/model/dto/chapter/ChapterDTO.java

@@ -7,6 +7,9 @@ import lombok.AllArgsConstructor;
 import lombok.Data;
 import lombok.NoArgsConstructor;
 
+
+import javax.validation.constraints.Digits;
+import javax.validation.constraints.Pattern;
 import java.io.Serializable;
 import java.time.LocalDateTime;
 
@@ -25,6 +28,10 @@ import java.time.LocalDateTime;
 public class ChapterDTO implements Serializable {
     private static final long serialVersionUID = 1L;
 
+    @Digits(integer = 10, fraction = 1, message = "总学时只能保留一位小数")
+    @ApiModelProperty(value = "总学时")
+    private double totalClassHours;
+
     @ApiModelProperty(value = "创建人")
     private String createBy;
 
@@ -61,8 +68,7 @@ public class ChapterDTO implements Serializable {
     @ApiModelProperty(value = "课程目标")
     private String courseObjectivesId;
 
-    @ApiModelProperty(value = "总学时")
-    private double totalClassHours;
+
 
     @ApiModelProperty(value = "要求")
     private String requirement;

src/main/java/com/teaching/backend/model/dto/chapter/ChapterExcelDTO.java

@@ -9,6 +9,8 @@ import lombok.NoArgsConstructor;
 
 import java.io.Serializable;
 import java.time.LocalDateTime;
+import java.util.ArrayList;
+import java.util.List;
 
 /**
  * ClassName: ChapterExcelDto
@@ -29,6 +31,7 @@ public class ChapterExcelDTO implements Serializable {
     private String createBy;
 
 
+
     @ApiModelProperty(value = "创建日期")
     @JsonFormat(pattern = "yyyy/M/d HH:mm:ss")
     private LocalDateTime createTime;
@@ -94,7 +97,10 @@ public class ChapterExcelDTO implements Serializable {
     @TableField(exist = false)
     private Long ExcelId;
 
+
     public void setIsSection(boolean b) {
         this.isSection=b;
     }
+    // 添加获取和设置方法
+
 }

src/main/java/com/teaching/backend/model/entity/chapter/Chapter.java

@@ -11,6 +11,7 @@ import lombok.Data;
 import lombok.EqualsAndHashCode;
 import lombok.experimental.Accessors;
 
+import javax.validation.constraints.Digits;
 import java.io.Serializable;
 import java.time.LocalDateTime;
 import java.util.List;
@@ -70,6 +71,9 @@ public class Chapter implements Serializable {
     private String courseObjectivesId;
 
     @ApiModelProperty(value = "总学时")
+    //使用参数合法性校验
+    @Digits(integer = 10, fraction = 1, message = "总学时只能保留一位小数")
+//    package com.teaching.backend.exception;需要在这个里面添加异常处理
     private double totalClassHours;
 
     @ApiModelProperty(value = "要求")

src/main/java/com/teaching/backend/service/chapter/IChapterService.java

@@ -10,6 +10,7 @@ import com.teaching.backend.model.vo.chapter.ChapterVo;
 
 import javax.servlet.http.HttpServletResponse;
 import java.io.IOException;
+import java.math.BigDecimal;
 import java.util.LinkedList;
 import java.util.List;
 
@@ -33,7 +34,7 @@ public interface IChapterService extends IService<Chapter> {
     List<Chapter> getChapterTree(String courseId);
 
 
-    void saveChapter(ChapterDTO chapterDTO);
+    BigDecimal saveChapter(ChapterDTO chapterDTO);
 
 
 

src/main/java/com/teaching/backend/service/favour/SeCourseFavourService.java

@@ -8,6 +8,7 @@ import com.teaching.backend.model.entity.courses.Courses;
 import com.teaching.backend.model.entity.favour.SeCourseFavour;
 import com.teaching.backend.model.vo.courses.CoursesVO;
 import com.teaching.backend.model.vo.favour.CourseFavourDetailVO;
+import org.springframework.stereotype.Service;
 
 import java.util.List;
 
@@ -16,6 +17,7 @@ import java.util.List;
  * @Date:2024-05-30-20:22
  * @Description:
  */
+
 public interface SeCourseFavourService extends IService<SeCourseFavour> {
 
     /**

src/main/java/com/teaching/backend/service/impl/chapter/ChapterExcelServiceImpl.java

@@ -26,7 +26,9 @@ public class ChapterExcelServiceImpl {
 
     public List<String> uploadExcel(MultipartFile file, String courseId) {
         List<String> validationErrors = new ArrayList<>();
-        try (InputStream inputStream = file.getInputStream()) {
+        try (
+                InputStream inputStream = file.getInputStream()
+        ) {
             validationErrors = excelParser.parse(inputStream, courseId);
         } catch (Exception e) {
             validationErrors.add("系统错误: " + e.getMessage());

src/main/java/com/teaching/backend/service/impl/chapter/ChapterServiceImpl.java

@@ -12,6 +12,7 @@ import com.teaching.backend.exception.BusinessException;
 import com.teaching.backend.mapper.Knowtemp.KnowtmpMapper;
 import com.teaching.backend.mapper.chapter.ChapterMapper;
 import com.teaching.backend.mapper.chapter.TemporaryChapterMapper;
+import com.teaching.backend.mapper.courses.CoursesMapper;
 import com.teaching.backend.model.dto.chapter.ChapterDTO;
 
 import com.teaching.backend.model.dto.chapter.ChapterExcelDTO;
@@ -29,6 +30,8 @@ import org.springframework.transaction.annotation.Transactional;
 
 import javax.servlet.http.HttpServletResponse;
 import java.io.IOException;
+import java.math.BigDecimal;
+import java.math.RoundingMode;
 import java.time.LocalDateTime;
 import java.util.*;
 import java.util.stream.Collectors;
@@ -44,6 +47,8 @@ public class ChapterServiceImpl extends ServiceImpl<ChapterMapper, Chapter> impl
     @Autowired
     private ChapterMapper chapterMapper;
 
+    @Autowired
+    private CoursesMapper coursesMapper;
     @Autowired
     private TemporaryChapterMapper temporaryChapterMapper;
     @Autowired
@@ -228,8 +233,7 @@ public class ChapterServiceImpl extends ServiceImpl<ChapterMapper, Chapter> impl
     }
 
     @Override
-    public void saveChapter(ChapterDTO chapterDTO) {
-
+    public BigDecimal saveChapter(ChapterDTO chapterDTO) {
         Chapter chapter = new Chapter();
         try {
             BeanUtils.copyProperties(chapterDTO, chapter);
@@ -237,7 +241,27 @@ public class ChapterServiceImpl extends ServiceImpl<ChapterMapper, Chapter> impl
             throw new RuntimeException("复制数据出错", e);
         }
         Long pid = chapter.getPid();
+
+        BigDecimal remainingHours = BigDecimal.ZERO; // 初始化剩余学时
+
         if (pid == null) {
+            BigDecimal classHours = coursesMapper.getClassHoursById(chapterDTO.getCourseId());
+            LambdaQueryWrapper<Chapter> lambdaQueryWrapper = new LambdaQueryWrapper<>();
+            lambdaQueryWrapper.eq(Chapter::getPid, 0)
+                    .eq(Chapter::getCourseId, chapterDTO.getCourseId());
+
+            List<Chapter> chapterList = chapterMapper.selectList(lambdaQueryWrapper);
+
+            BigDecimal totalChapterHours = chapterList.stream()
+                    .map(Chapter::getTotalClassHours)
+                    .map(BigDecimal::new)
+                    .reduce(BigDecimal.ZERO, BigDecimal::add);
+
+            remainingHours = classHours.subtract(totalChapterHours).setScale(1, RoundingMode.HALF_UP);
+
+
+
+            if (totalChapterHours.compareTo(classHours) < 0) {
                 chapter.setPid(0L);
                 LambdaQueryWrapper<Chapter> maxSortWrapper = new LambdaQueryWrapper<>();
                 maxSortWrapper.eq(Chapter::getPid, 0).orderByDesc(Chapter::getOrderNum).last("limit 1");
@@ -249,36 +273,65 @@ public class ChapterServiceImpl extends ServiceImpl<ChapterMapper, Chapter> impl
                 chapter.setOrderNum(newSort);
                 chapter.setCreateTime(LocalDateTime.now());
                 chapter.setUpdateTime(LocalDateTime.now());
-
                 this.save(chapter);
             } else {
+                throw new BusinessException(ErrorCode.PARAMS_ERROR, "当前课程的总学时已经分配完成，请先修改章节学时，或者课程总学时");
+            }
+        } else {
+
+            BigDecimal chapterHours = chapterMapper.getChapterHours(pid);
+
+
+            LambdaQueryWrapper<Chapter> chapterLambdaQueryWrapper = new LambdaQueryWrapper<>();
+            chapterLambdaQueryWrapper.eq(Chapter::getPid, pid)
+                    .eq(Chapter::getCourseId, chapterDTO.getCourseId());
+
+            List<Chapter> chapterList = chapterMapper.selectList(chapterLambdaQueryWrapper);
+
+            BigDecimal hours = chapterList.stream()
+                    .map(Chapter::getTotalClassHours)
+                    .map(BigDecimal::new)
+                    .reduce(BigDecimal.ZERO, BigDecimal::add);
 
+            BigDecimal totalClassHours = new BigDecimal(chapterDTO.getTotalClassHours()).setScale(1, RoundingMode.HALF_UP);
+
+
+
+
+            remainingHours = chapterHours.subtract(hours).setScale(1, RoundingMode.HALF_UP);
+
+
+
+            if (remainingHours.compareTo(totalClassHours) >= 0) {
                 Chapter parentChapter = this.getById(pid);
                 if (parentChapter != null) {
-
                     LambdaQueryWrapper<Chapter> maxSortWrapper = new LambdaQueryWrapper<>();
                     maxSortWrapper.eq(Chapter::getPid, pid).orderByDesc(Chapter::getOrderNum).last("limit 1");
-
                     parentChapter.setUpdateTime(LocalDateTime.now());
                     Chapter maxSortChapter = this.getOne(maxSortWrapper);
                     double newSort = 1;
                     if (maxSortChapter != null) {
                         newSort = maxSortChapter.getOrderNum() + 1;
                     }
-
                     chapter.setOrderNum(newSort);
-
                     this.updateById(parentChapter);
-
                     chapter.setCreateTime(LocalDateTime.now());
                     chapter.setUpdateTime(LocalDateTime.now());
                     this.save(chapter);
+                    remainingHours = remainingHours.subtract(totalClassHours).setScale(1, RoundingMode.HALF_UP);
                 } else {
                     throw new BusinessException(ErrorCode.PARAMS_ERROR, "未找到父章节，ID 为: " + pid);
                 }
+            } else {
+                throw new BusinessException(ErrorCode.PARAMS_ERROR, "所添加的章节学时大于其父章节剩余学时，所添加学时为：" + totalClassHours + " 父章节学时为：" + chapterHours +
+                        " 当前所剩学时为:" + remainingHours);
             }
         }
 
+        return remainingHours;
+    }
+
+
     @Override
     public Long saveExcelChapter2(ChapterDTO chapterDTO, boolean isParent) {
         Chapter chapter = new Chapter();
@@ -477,6 +530,7 @@ public class ChapterServiceImpl extends ServiceImpl<ChapterMapper, Chapter> impl
     @Transactional(rollbackFor = Exception.class)
     public void moveDataFromTemporaryToFinal() {
         List<TemporaryChapter> temporaryChapters = temporaryChapterMapper.selectAll();
+
         Map<Long, Long> tempIdToFinalIdMap = new HashMap<>();
 
         for (TemporaryChapter tempChapter : temporaryChapters) {
@@ -537,7 +591,7 @@ public class ChapterServiceImpl extends ServiceImpl<ChapterMapper, Chapter> impl
                 temporaryChapter.setPid(parentChapter.getId());
                 setChapterOrder(temporaryChapter, pid);
             } else {
-                throw new BusinessException(ErrorCode.PARAMS_ERROR, "未找到父章节，ID 为: " + pid);
+                throw new BusinessException(ErrorCode.PARAMS_ERROR, "在这里报的错 未找到父章节，ID 为: " + pid);
             }
         }
 //        执行

src/main/java/com/teaching/backend/service/impl/thumb/SeCourseThumbServiceImpl.java

@@ -1,108 +1,100 @@
-//package com.teaching.backend.service.impl.thumb;
-//
-//import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
-//import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
-//import com.teaching.backend.common.BaseResponse;
-//import com.teaching.backend.common.ErrorCode;
-//import com.teaching.backend.common.ResultUtils;
-//import com.teaching.backend.exception.BusinessException;
-//import com.teaching.backend.mapper.courses.CoursesMapper;
-//import com.teaching.backend.mapper.thumb.SeCourseThumbMapper;
-//import com.teaching.backend.model.entity.courses.Courses;
-//import com.teaching.backend.model.entity.thumb.SeCourseThumb;
-//import com.teaching.backend.model.entity.thumb.SeKnowThumb;
-//import com.teaching.backend.model.entity.thumb.SeResourceThumb;
-//import com.teaching.backend.service.thumb.SeCourseThumbService;
-//import com.teaching.backend.service.thumb.SeKnowThumbService;
-//import com.teaching.backend.service.thumb.SeResourceThumbService;
-//import org.springframework.beans.factory.annotation.Autowired;
-//import org.springframework.stereotype.Service;
-//
-//import javax.annotation.Resource;
-//import java.util.concurrent.locks.Lock;
-//import java.util.concurrent.locks.ReentrantLock;
-//
-//
-///**
-// * @Author:youhang
-// * @Date:2024-05-30-20:23
-// * @Description:
-// */
-//@Service
-//public class SeCourseThumbServiceImpl extends ServiceImpl<SeCourseThumbMapper, SeCourseThumb> implements SeCourseThumbService {
-//
-//
-//    @Resource
-//    private SeResourceThumbService seResourceThumbService;
-//
-//    @Resource
-//    SeKnowThumbService seKnowThumbService;
-//
-//
-//    @Autowired
-//    CoursesMapper coursesMapper;
-//
-//    @Override
-//    public BaseResponse<Boolean> doCourseThumb(String courseId, String userId) {
-//
-//        //从数据库中校验是否存在courseid
-//        Courses courses = coursesMapper.selectById(courseId);
-//        boolean result = false;
-//        if(courses == null){
-//            return ResultUtils.error(ErrorCode.PARAMS_COURSE_NOTEXISTS);
-//        }
-//
-//        // 先查询数据库记录，该用户是否点赞
-//        SeCourseThumb seCourseThumb = new SeCourseThumb();
-//        seCourseThumb.setCourseId(courseId);
-//        seCourseThumb.setUserId(userId);
-//        QueryWrapper<SeCourseThumb> thumbQueryWrapper = new QueryWrapper<>(seCourseThumb);
-//        SeCourseThumb oldSeCourseThumb = this.getOne(thumbQueryWrapper);
-//        //已点赞
-//        if (oldSeCourseThumb != null) {
-//            // 取消点赞 删除记录
-//            result = this.remove(thumbQueryWrapper);
-//            if (result) {
-//                System.out.println("取消点赞成功");
-//                return ResultUtils.success(result);
-//            } else {
-//                throw new BusinessException(ErrorCode.SYSTEM_ERROR);
-//            }
-//        } else {
-//            // 每个用户串行点赞
-//            // 锁必须要包裹住事务方法
-//            Lock lock = new ReentrantLock();
-//            lock.lock();
-//            try {
-//                result = this.save(seCourseThumb);
-//            } catch (Exception e) {
-//                throw new BusinessException(ErrorCode.OPERATION_ERROR);
-//            } finally {
-//                lock.unlock();
-//                System.out.println("点赞成功");
-//                return ResultUtils.success(result);
-//            }
-//        }
-//    }
-//
-//    @Override
-//    public BaseResponse<Long> thumbCount(String courseId) {
-//
-//        //从数据库中校验是否存在courseid
-//        Courses courses = coursesMapper.selectById(courseId);
-//        if(courses == null){
-//            return ResultUtils.error(ErrorCode.PARAMS_COURSE_NOTEXISTS);
-//        }
-//
-//        QueryWrapper<SeCourseThumb> thumbQueryWrapper = new QueryWrapper<>();
-//        thumbQueryWrapper.eq("course_id", courseId);
-//        long count = this.count(thumbQueryWrapper);
-//        if (count == 0) {
-//            throw new BusinessException(ErrorCode.SYSTEM_ERROR, "查询参数不存在");
-//        } else {
-//            return ResultUtils.success(count);
-//        }
-//    }
-//
-//
-//}
+package com.teaching.backend.service.impl.thumb;
+
+import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
+import com.teaching.backend.common.BaseResponse;
+import com.teaching.backend.common.ErrorCode;
+import com.teaching.backend.common.ResultUtils;
+import com.teaching.backend.exception.BusinessException;
+import com.teaching.backend.mapper.courses.CoursesMapper;
+import com.teaching.backend.mapper.thumb.SeCourseThumbMapper;
+import com.teaching.backend.model.entity.courses.Courses;
+import com.teaching.backend.model.entity.thumb.SeCourseThumb;
+import com.teaching.backend.model.entity.thumb.SeKnowThumb;
+import com.teaching.backend.model.entity.thumb.SeResourceThumb;
+import com.teaching.backend.service.thumb.SeCourseThumbService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import javax.annotation.Resource;
+import java.util.concurrent.locks.Lock;
+import java.util.concurrent.locks.ReentrantLock;
+
+
+/**
+ * @Author:youhang
+ * @Date:2024-05-30-20:23
+ * @Description:
+ */
+@Service
+public class SeCourseThumbServiceImpl extends ServiceImpl<SeCourseThumbMapper, SeCourseThumb> implements SeCourseThumbService {
+
+
+
+    @Autowired
+    CoursesMapper coursesMapper;
+
+    @Override
+    public BaseResponse<Boolean> doCourseThumb(String courseId, String userId) {
+
+        //从数据库中校验是否存在courseid
+        Courses courses = coursesMapper.selectById(courseId);
+        boolean result = false;
+        if(courses == null){
+            return ResultUtils.error(ErrorCode.PARAMS_COURSE_NOTEXISTS);
+        }
+
+        // 先查询数据库记录，该用户是否点赞
+        SeCourseThumb seCourseThumb = new SeCourseThumb();
+        seCourseThumb.setCourseId(courseId);
+        seCourseThumb.setUserId(userId);
+        QueryWrapper<SeCourseThumb> thumbQueryWrapper = new QueryWrapper<>(seCourseThumb);
+        SeCourseThumb oldSeCourseThumb = this.getOne(thumbQueryWrapper);
+        //已点赞
+        if (oldSeCourseThumb != null) {
+            // 取消点赞 删除记录
+            result = this.remove(thumbQueryWrapper);
+            if (result) {
+                System.out.println("取消点赞成功");
+                return ResultUtils.success(result);
+            } else {
+                throw new BusinessException(ErrorCode.SYSTEM_ERROR);
+            }
+        } else {
+            // 每个用户串行点赞
+            // 锁必须要包裹住事务方法
+            Lock lock = new ReentrantLock();
+            lock.lock();
+            try {
+                result = this.save(seCourseThumb);
+            } catch (Exception e) {
+                throw new BusinessException(ErrorCode.OPERATION_ERROR);
+            } finally {
+                lock.unlock();
+                System.out.println("点赞成功");
+                return ResultUtils.success(result);
+            }
+        }
+    }
+
+    @Override
+    public BaseResponse<Long> thumbCount(String courseId) {
+
+        //从数据库中校验是否存在courseid
+        Courses courses = coursesMapper.selectById(courseId);
+        if(courses == null){
+            return ResultUtils.error(ErrorCode.PARAMS_COURSE_NOTEXISTS);
+        }
+
+        QueryWrapper<SeCourseThumb> thumbQueryWrapper = new QueryWrapper<>();
+        thumbQueryWrapper.eq("course_id", courseId);
+        long count = this.count(thumbQueryWrapper);
+        if (count == 0) {
+            throw new BusinessException(ErrorCode.SYSTEM_ERROR, "查询参数不存在");
+        } else {
+            return ResultUtils.success(count);
+        }
+    }
+
+
+}

src/main/java/com/teaching/backend/service/thumb/SeCourseThumbService.java

@@ -1,33 +1,33 @@
-//package com.teaching.backend.service.thumb;
-//
-//import com.baomidou.mybatisplus.extension.service.IService;
-//import com.teaching.backend.common.BaseResponse;
-//import com.teaching.backend.model.entity.thumb.SeCourseThumb;
-//
-///**
-// * @Author:youhang
-// * @Date:2024-05-30-20:22
-// * @Description:
-// */
-//public interface SeCourseThumbService extends IService<SeCourseThumb> {
-//
-//    /**
-//     * 点赞
-//     *
-//     * @param courseId
-//     * @param userId
-//     * @return
-//     */
-//    BaseResponse<Boolean> doCourseThumb(String courseId, String userId);
-//
-//
-//    /**
-//     * 点赞总数
-//     *
-//     * @param courseId
-//     * @return
-//     */
-//    BaseResponse<Long> thumbCount(String courseId);
-//
-//
-//}
+package com.teaching.backend.service.thumb;
+
+import com.baomidou.mybatisplus.extension.service.IService;
+import com.teaching.backend.common.BaseResponse;
+import com.teaching.backend.model.entity.thumb.SeCourseThumb;
+
+/**
+ * @Author:youhang
+ * @Date:2024-05-30-20:22
+ * @Description:
+ */
+public interface SeCourseThumbService extends IService<SeCourseThumb> {
+
+    /**
+     * 点赞
+     *
+     * @param courseId
+     * @param userId
+     * @return
+     */
+    BaseResponse<Boolean> doCourseThumb(String courseId, String userId);
+
+
+    /**
+     * 点赞总数
+     *
+     * @param courseId
+     * @return
+     */
+    BaseResponse<Long> thumbCount(String courseId);
+
+
+}

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

@@ -13,13 +13,10 @@ package com.teaching.backend.utils.Chapter;
 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.ss.usermodel.Sheet;
-import org.apache.poi.ss.usermodel.Workbook;
 import org.apache.poi.xssf.eventusermodel.XSSFReader;
 import org.apache.poi.xssf.eventusermodel.XSSFSheetXMLHandler;
 import org.apache.poi.xssf.model.SharedStringsTable;
 import org.apache.poi.xssf.model.StylesTable;
-import org.apache.poi.xssf.usermodel.XSSFWorkbook;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Component;
 import org.xml.sax.InputSource;

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

@@ -16,6 +16,7 @@ import org.apache.poi.xssf.usermodel.XSSFComment;
 import org.apache.poi.xssf.usermodel.XSSFSheet;
 import org.springframework.transaction.annotation.Transactional;
 
+import java.math.BigDecimal;
 import java.util.*;
 
 /**
@@ -32,7 +33,6 @@ public class SheetHandler implements XSSFSheetXMLHandler.SheetContentsHandler {
 
     private Long currentChapterPid;
     private final TemporaryChapterMapper temporaryChapterMapper;
-    private Double chapterHour;
     private final IChapterService chapterService;
     private final String courseId;
     private ChapterExcelDTO chapterDTO;
@@ -41,6 +41,9 @@ public class SheetHandler implements XSSFSheetXMLHandler.SheetContentsHandler {
     private boolean hasErrors = false;
     private int totalRows;
 
+    // 用于存储章节的学时总和
+    private BigDecimal allHours = BigDecimal.ZERO;
+    private BigDecimal expectedTotalClassHours=BigDecimal.ZERO;
 
 
     public SheetHandler(TemporaryChapterMapper temporaryChapterMapper, IChapterService chapterService, String courseId,int totalRows) {
@@ -55,6 +58,8 @@ public class SheetHandler implements XSSFSheetXMLHandler.SheetContentsHandler {
         if (rowIndex < totalRows - 1) {
             if (rowIndex == 0 || rowIndex == 1) {
                 chapterDTO = null;
+                allHours = BigDecimal.ZERO; // 重置学时总和
+                expectedTotalClassHours = BigDecimal.ZERO; // 重置预期学时
             } else {
                 chapterDTO = new ChapterExcelDTO();
                 chapterDTO.setCourseId(courseId);
@@ -67,6 +72,9 @@ public class SheetHandler implements XSSFSheetXMLHandler.SheetContentsHandler {
 
     @Transactional(rollbackFor = Exception.class)
     public List<String> finalizeProcess() {
+        // 校验学时
+        validateTotalClassHours();
+
         if (hasErrors) {
             return validationErrors;
         }
@@ -75,6 +83,16 @@ public class SheetHandler implements XSSFSheetXMLHandler.SheetContentsHandler {
         return Collections.emptyList();
     }
 
+    private void validateTotalClassHours() {
+
+        if (allHours.subtract(expectedTotalClassHours).abs().compareTo(BigDecimal.valueOf(0.01)) > 0) {
+            validationErrors.add("学时总和不匹配: 实际总和为 " + allHours + ", 预期为 " + expectedTotalClassHours);
+            temporaryChapterMapper.deleteAll();
+            hasErrors = true;
+
+        }
+    }
+
     private void saveToTemporaryTable(ChapterExcelDTO chapterDTO) {
         Long pid = chapterDTO.getParentExcelId();
         if (pid != null && pid != 0) {
@@ -107,7 +125,6 @@ public class SheetHandler implements XSSFSheetXMLHandler.SheetContentsHandler {
 
             if (chapterDTO.isSection()) {
                 if (currentChapterPid != null) {
-                    chapterDTO.setTotalClassHours(chapterHour);
                     chapterDTO.setPid(currentChapterPid);
                     saveToTemporaryTable(chapterDTO);
                 } else {
@@ -134,7 +151,12 @@ public class SheetHandler implements XSSFSheetXMLHandler.SheetContentsHandler {
 
                 case "C":
                     if (!chapterDTO.isSection()) {
-                        chapterDTO.setTotalClassHours(Double.parseDouble(formattedValue));
+                        // 当前章节的学时
+                        BigDecimal classHours = new BigDecimal(formattedValue);
+                        chapterDTO.setTotalClassHours(classHours.doubleValue());
+
+                        expectedTotalClassHours = expectedTotalClassHours.add(classHours); // 累加预期学时
+
                         saveToTemporaryTable(chapterDTO);
                         currentChapterPid = excelIdToDatabaseIdMap.get(chapterDTO.getExcelId());
                     }
@@ -153,16 +175,18 @@ public class SheetHandler implements XSSFSheetXMLHandler.SheetContentsHandler {
 
                 case "F":
                     if (chapterDTO.isSection()) {
-                        chapterDTO.setTotalClassHours(Double.parseDouble(formattedValue));
-                        chapterHour = chapterDTO.getTotalClassHours();
+                        // 子章节的学时
+                        BigDecimal sectionHours = new BigDecimal(formattedValue);
+                        chapterDTO.setTotalClassHours(sectionHours.doubleValue());
+
+                        // 只对当前章节的学时进行累加
+                        allHours = allHours.add(sectionHours);
+                        System.out.println("这是累加的学时" + allHours);
                     }
                     break;
-
             }
 
         }
-
-
     }
 
 }