diff --git a/src/main/java/com/teaching/backend/model/entity/CourseResources.java b/src/main/java/com/teaching/backend/model/entity/CourseResources.java
index 40809da..e1819c4 100644
--- a/src/main/java/com/teaching/backend/model/entity/CourseResources.java
+++ b/src/main/java/com/teaching/backend/model/entity/CourseResources.java
@@ -33,4 +33,13 @@ public class CourseResources {
     private String tags;
     private String path;
 
+    /**
+     * 简介
+     */
+    private String description;
+
+    /**
+     * 封面
+     */
+    private String img;
 }
diff --git a/src/main/java/com/teaching/backend/service/CourseResourcesService.java b/src/main/java/com/teaching/backend/service/CourseResourcesService.java
index 72a5082..63c922f 100644
--- a/src/main/java/com/teaching/backend/service/CourseResourcesService.java
+++ b/src/main/java/com/teaching/backend/service/CourseResourcesService.java
@@ -24,4 +24,8 @@ public interface CourseResourcesService extends IService<CourseResources> {
 
 
     Page<CourseResources> getresourceRecords(Integer type, List<Integer> resourceIdList, int page, int pageSize);
+
+
+    public List<CourseResources> getByType(String type);
+    public void removeCourseResources(List<Long> ids);
 }
diff --git a/src/main/java/com/teaching/backend/service/impl/CourseResourcesServiceImpl.java b/src/main/java/com/teaching/backend/service/impl/CourseResourcesServiceImpl.java
index 50479c6..c055e6e 100644
--- a/src/main/java/com/teaching/backend/service/impl/CourseResourcesServiceImpl.java
+++ b/src/main/java/com/teaching/backend/service/impl/CourseResourcesServiceImpl.java
@@ -13,6 +13,7 @@ import com.teaching.backend.model.entity.ResourceRelationship;
 import com.teaching.backend.service.CourseResourcesService;
 import com.teaching.backend.service.ResourcesRelationshipService;
 import org.apache.commons.io.FileUtils;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 
 import javax.annotation.Resource;
@@ -35,6 +36,9 @@ import java.util.List;
 public class CourseResourcesServiceImpl extends ServiceImpl<CourseResourcesMapper, CourseResources> implements CourseResourcesService {
     @Resource
     ResourcesRelationshipService resourcesRelationshipService;
+
+    @Autowired
+    private CourseResourcesMapper courseResourcesMapper;
     @Override
     public void updateFile(Integer type, String fileName, String filePath) {
 
@@ -115,6 +119,27 @@ public class CourseResourcesServiceImpl extends ServiceImpl<CourseResourcesMappe
         return key;
     }
 
+    @Override
+    public List<CourseResources> getByType(String type) {
+        LambdaQueryWrapper<CourseResources> lambdaQueryWrapper = new LambdaQueryWrapper<>();
+        lambdaQueryWrapper.eq(CourseResources::getType, type);
+
+        List<CourseResources> list = this.list(lambdaQueryWrapper);
+
+        return list;
+    }
+
+
+    @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);
+    }
+
 }