课程资源删除

src/main/java/com/teaching/backend/controller/courseResource/CourseResourceController.java

@@ -52,8 +52,8 @@ public class CourseResourceController {
     @ApiOperation("根据ids删除")
     @DeleteMapping("/delete")
     public BaseResponse<String> deleteRecords(@RequestParam List<Long> ids){
-//        courseResourcesService.removeCourseResources(ids);
-        courseResourcesService.removeBatchByIds(ids);
+        courseResourcesService.removeCourseResources(ids);
+//        courseResourcesService.removeBatchByIds(ids);
         return ResultUtils.success("删除成功!!");
     }
 

src/main/java/com/teaching/backend/service/impl/CourseResourcesServiceImpl.java

@@ -7,9 +7,12 @@ import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
 import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
 import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
 
+import com.teaching.backend.mapper.records.LearningRecordsMapper;
 import com.teaching.backend.mapper.resource.CourseResourcesMapper;
 import com.teaching.backend.model.entity.CourseResources;
 import com.teaching.backend.model.entity.ResourceRelationship;
+import com.teaching.backend.model.entity.records.LearningRecords;
+import com.teaching.backend.service.impl.records.LearningRecordsServiceImpl;
 import com.teaching.backend.service.resource.CourseResourcesService;
 import com.teaching.backend.service.resource.ResourcesRelationshipService;
 import org.apache.commons.io.FileUtils;
@@ -21,7 +24,9 @@ import javax.servlet.http.HttpServletResponse;
 import java.io.File;
 import java.io.IOException;
 import java.io.InputStream;
+import java.util.ArrayList;
 import java.util.List;
+import java.util.function.Consumer;
 
 /**
  * ClassName: FileTableImpl
@@ -39,6 +44,8 @@ public class CourseResourcesServiceImpl extends ServiceImpl<CourseResourcesMappe
 
     @Autowired
     private CourseResourcesMapper courseResourcesMapper;
+    @Autowired
+    private LearningRecordsMapper learningRecordsMapper;
     @Override
     public void updateFile(Integer type, String fileName, String filePath) {
 
@@ -132,12 +139,20 @@ public class CourseResourcesServiceImpl extends ServiceImpl<CourseResourcesMappe
 
     @Override
     public void removeCourseResources(List<Long> ids) {
-        LambdaQueryWrapper<CourseResources> lambdaQueryWrapper = new LambdaQueryWrapper<>();
-        lambdaQueryWrapper.in(CourseResources::getId, ids);
-        List<CourseResources> list = this.list(lambdaQueryWrapper);
-        courseResourcesMapper.deleteBatchIds(list);
-//        System.out.println(this.updateBatchById(list));
-//        this.remove(lambdaQueryWrapper);
+        //删除资源在记录表里对应的记录
+        List<LearningRecords> list = new ArrayList<>();
+        for (Long id: ids) {
+            LambdaQueryWrapper<LearningRecords> lambdaQueryWrapper = new LambdaQueryWrapper<>();
+            //System.out.println("id:"+id);
+            lambdaQueryWrapper.eq(LearningRecords::getCoursesId, id).eq(LearningRecords::getType, 4);
+            //System.out.println("资源对应的记录:"+learningRecordsMapper.selectList(lambdaQueryWrapper));
+            list.addAll(learningRecordsMapper.selectList(lambdaQueryWrapper));
+            //System.out.println("添加完后的集合:"+list);
+        }
+        learningRecordsMapper.deleteBatchIds(list);
+        //System.out.println(list);
+        //删除课程资源
+        courseResourcesMapper.deleteBatchIds(ids);
     }
 
     @Override
@@ -148,8 +163,8 @@ public class CourseResourcesServiceImpl extends ServiceImpl<CourseResourcesMappe
         switch (courseResources.getType()){
             case 1 : courseResources.setImg("src\\assets\\icons\\ppt (2).png");//ppt的默认图片
             break;
-//            case 2 : courseResources.setImg(""); //图片
-//            break;
+            case 2 : courseResources.setImg(courseResources.getImg()); //图片
+            break;
             case 3 : courseResources.setImg("src\\assets\\images\\video.png"); //视频
             break;
             case 4 : courseResources.setImg("src\\assets\\images\\PDF .png"); //pdf
@@ -160,14 +175,14 @@ public class CourseResourcesServiceImpl extends ServiceImpl<CourseResourcesMappe
             break;
             default: courseResources.setImg(""); //暂无默认图片
         }
+        this.save(courseResources);
     }
 
     @Override
     public CourseResources editCourseResource(String resourceId) {
         //根据id查数据
-        CourseResources courseResources = this.getById(resourceId);
 
-        return courseResources;
+        return this.getById(resourceId);
     }
 
 

src/main/java/com/teaching/backend/service/impl/records/LearningRecordsServiceImpl.java

@@ -91,23 +91,44 @@ public class LearningRecordsServiceImpl extends ServiceImpl<LearningRecordsMappe
 //            System.out.println(learningRecords.getResourceId());
 //            System.out.println("1");
 
+            String name;
             //添加课程名称
             switch (learningRecords.getType()) {
                 case "4": //如果是资源学习
+//                    if (courseResourcesService.getById(learningRecords.getCoursesId()) != null){
+//                        name=courseResourcesService.getById(learningRecords.getCoursesId()).getName();
+//                    }else {
+//                        name = "查无次记录";
+//                    }
+                    //如果对应的资源不存在
                     learningRecordsVo.setCoursesName(courseResourcesService.getById(learningRecords.getCoursesId()).getName());//设置名称 --------------------------------------------待完善
-
                     break;
                 case "3": //如果是知识点学习记录
+//                    if (knowledgePointService.getById(learningRecords.getCoursesId()) != null){
+//                        name=knowledgePointService.getById(learningRecords.getCoursesId()).getName();
+//                    }else {
+//                        name = "查无次记录";
+//                    }
                     learningRecordsVo.setCoursesName(knowledgePointService.getById(learningRecords.getCoursesId()).getName());
-
+                    //如果对应的资源不存在
                     break;
                 case "2": //如果是章节学习记录
+//                    if (chapterService.getById(learningRecords.getCoursesId()) != null){
+//                        name=chapterService.getById(learningRecords.getCoursesId()).getName();
+//                    }else {
+//                        name = "查无次记录";
+//                    }
                     learningRecordsVo.setCoursesName(chapterService.getById(learningRecords.getCoursesId()).getName());
-
+                    //如果对应的资源不存在
                     break;
                 case "1": //如果是课程学习记录
-                    System.out.println();
+//                    if (coursesService.getById(learningRecords.getCoursesId()) != null){
+//                        name=coursesService.getById(learningRecords.getCoursesId()).getName();
+//                    }else {
+//                        name = "查无次记录";
+//                    }
                     learningRecordsVo.setCoursesName(coursesService.getById(learningRecords.getCoursesId()).getName());
+                    //如果对应的资源不存在
                     break;
             }
                 //添加观看人数