diff --git a/src/main/java/com/service/NotesInfoCommentService.java b/src/main/java/com/service/NotesInfoCommentService.java
new file mode 100644
index 0000000..51d120e
--- /dev/null
+++ b/src/main/java/com/service/NotesInfoCommentService.java
@@ -0,0 +1,60 @@
+package com.example.service;
+
+import com.example.exception.CustomException;
+import com.example.dao.NotesInfoCommentDao;
+import org.springframework.stereotype.Service;
+import com.example.entity.NotesInfoComment;
+import com.example.vo.NotesInfoCommentVo;
+import com.example.entity.Account;
+import com.github.pagehelper.PageHelper;
+import com.github.pagehelper.PageInfo;
+import javax.annotation.Resource;
+import javax.servlet.http.HttpServletRequest;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+import java.util.List;
+
+@Service
+public class NotesInfoCommentService {
+
+    @Resource
+    private NotesInfoCommentDao notesInfoCommentDao;
+
+    public NotesInfoComment add(NotesInfoComment commentInfo, HttpServletRequest request) {
+        Account user = (Account) request.getSession().getAttribute("user");
+        if (user == null) {
+            throw new CustomException("1001", "请先登录！");
+        }
+        commentInfo.setName(user.getName());
+        commentInfo.setTime(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date()));
+        notesInfoCommentDao.insertSelective(commentInfo);
+        return commentInfo;
+    }
+
+    public void delete(Long id) {
+        notesInfoCommentDao.deleteByPrimaryKey(id);
+    }
+
+    public void update(NotesInfoComment commentInfo) {
+        commentInfo.setTime(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date()));
+        notesInfoCommentDao.updateByPrimaryKeySelective(commentInfo);
+    }
+
+    public NotesInfoComment findById(Long id) {
+        return notesInfoCommentDao.selectByPrimaryKey(id);
+    }
+
+    public List<NotesInfoCommentVo> findAll() {
+        return notesInfoCommentDao.findAllVo(null);
+    }
+
+    public PageInfo<NotesInfoCommentVo> findPage(String name, Integer pageNum, Integer pageSize) {
+        PageHelper.startPage(pageNum, pageSize);
+        List<NotesInfoCommentVo> all = notesInfoCommentDao.findAllVo(name);
+        return PageInfo.of(all);
+    }
+
+    public List<NotesInfoComment> findByForeignId (Long id) {
+        return notesInfoCommentDao.findByForeignId(id);
+    }
+}