diff --git a/springboot/src/main/java/com/example/service/CourseService.java b/springboot/src/main/java/com/example/service/CourseService.java
index fb89b5e6..4264d734 100644
--- a/springboot/src/main/java/com/example/service/CourseService.java
+++ b/springboot/src/main/java/com/example/service/CourseService.java
@@ -10,17 +10,29 @@ import javax.annotation.Resource;
 import java.util.List;
 
 @Service
-
 public class CourseService {
 
     @Resource
     private CourseMapper courseMapper;
 
-    //total是查询的总数，list是数据列表
-    //pageNum是当前的页码，pageSize是每页的个数
-    public PageInfo<Course> selectPage(Integer pageNum, Integer pageSize, String name) {
+    // total 是查询的总数   list是数据列表
+    // pageNum 当前的页码   pageSize是每页的个数
+    public PageInfo<Course> selectPage(Integer pageNum, Integer pageSize, Course course) {
         PageHelper.startPage(pageNum, pageSize);
-        List<Course> courseList = courseMapper.selectAll(name);
+        List<Course> courseList = courseMapper.selectAll(course);
         return PageInfo.of(courseList);
     }
+
+    // 新增数据
+    public void add(Course course) {
+        courseMapper.insert(course);
+    }
+
+    public void updateById(Course course) {
+        courseMapper.updateById(course);
+    }
+
+    public void deleteById(Integer id) {
+        courseMapper.deleteById(id);
+    }
 }