8.26

pom.xml

@@ -35,7 +35,10 @@
             <artifactId>spring-test</artifactId>
             <version>5.1.5.RELEASE</version>
         </dependency>
-
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-validation</artifactId>
+        </dependency>
         <dependency>
             <groupId>org.apache.poi</groupId>
             <artifactId>poi</artifactId>

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

@@ -71,9 +71,7 @@ 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/impl/chapter/ChapterServiceImpl.java

@@ -244,8 +244,9 @@ public class ChapterServiceImpl extends ServiceImpl<ChapterMapper, Chapter> impl
 
         BigDecimal remainingHours = BigDecimal.ZERO; // 初始化剩余学时
 
-        if (pid == null) {
+        if (pid == null||pid.equals(0L)) {
             BigDecimal classHours = coursesMapper.getClassHoursById(chapterDTO.getCourseId());
+
             LambdaQueryWrapper<Chapter> lambdaQueryWrapper = new LambdaQueryWrapper<>();
             lambdaQueryWrapper.eq(Chapter::getPid, 0)
                     .eq(Chapter::getCourseId, chapterDTO.getCourseId());
@@ -258,10 +259,10 @@ public class ChapterServiceImpl extends ServiceImpl<ChapterMapper, Chapter> impl
                     .reduce(BigDecimal.ZERO, BigDecimal::add);
 
             remainingHours = classHours.subtract(totalChapterHours).setScale(1, RoundingMode.HALF_UP);
+            BigDecimal newChapterHours = BigDecimal.valueOf(chapter.getTotalClassHours()); // 根据实际返回类型调整
 
 
-
-            if (totalChapterHours.compareTo(classHours) < 0) {
+            if (newChapterHours.compareTo(remainingHours) <= 0) {
                 chapter.setPid(0L);
                 LambdaQueryWrapper<Chapter> maxSortWrapper = new LambdaQueryWrapper<>();
                 maxSortWrapper.eq(Chapter::getPid, 0).orderByDesc(Chapter::getOrderNum).last("limit 1");
@@ -274,10 +275,12 @@ public class ChapterServiceImpl extends ServiceImpl<ChapterMapper, Chapter> impl
                 chapter.setCreateTime(LocalDateTime.now());
                 chapter.setUpdateTime(LocalDateTime.now());
                 this.save(chapter);
+                remainingHours = remainingHours.subtract(newChapterHours).setScale(1, RoundingMode.HALF_UP);
             } 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");
+                throw new BusinessException(ErrorCode.PARAMS_ERROR, "当前添加的学时为："+newChapterHours+"当前剩余学时为："+remainingHours);
             }
-        } else {
+        }
+        else {
 
             BigDecimal chapterHours = chapterMapper.getChapterHours(pid);
 
@@ -297,7 +300,6 @@ public class ChapterServiceImpl extends ServiceImpl<ChapterMapper, Chapter> impl
 
 
 
-
             remainingHours = chapterHours.subtract(hours).setScale(1, RoundingMode.HALF_UP);