update 成绩更新时出bug

server-db/src/main/java/cn/exploring/engine/server/db/service/StudentPointService.java

@@ -108,10 +108,19 @@ public class StudentPointService {
         return "add OK";
     }
 
+    public StudentPointInfo selectByPrimaryKey(Integer id) {
+        return Objects.isNull(id) ? null
+                : studentPointInfoMapper.selectOneByExample(new StudentPointInfoExample().createCriteria()
+                        .andDeletedEqualTo(StudentPointInfo.NOT_DELETED)
+                        .andIdEqualTo(id)
+                .example());
+    }
+
     public Object updatePoint(StudentPointInfo studentPoint) {
-        LocalDateTime now = LocalDateTime.now();
-        studentPoint.setUpdateTime(now);
-        studentPointInfoMapper.updateByPrimaryKey(studentPoint);
+        StudentPointInfo record = selectByPrimaryKey(studentPoint.getId());
+        record.setUpdateTime(LocalDateTime.now());
+        record.setPoint(studentPoint.getPoint());
+        studentPointInfoMapper.updateByPrimaryKey(record);
         return "update OK";
     }