<dependency>
   <groupId>org.springframework.boot</groupId>
   <artifactId>spring-boot-starter-web</artifactId>
  </dependency>

  <dependency>
   <groupId>org.springframework.boot</groupId>
   <artifactId>spring-boot-starter-data-mongodb</artifactId>
  </dependency>

  <dependency>
   <groupId>org.projectlombok</groupId>
   <artifactId>lombok</artifactId>
   <optional>true</optional>
  </dependency>

  <!-- excel工具 -->
  <dependency>
   <groupId>org.apache.poi</groupId>
   <artifactId>poi-ooxml</artifactId>
   <version>4.0.1</version>
  </dependency>

  <dependency>
   <groupId>org.springframework.boot</groupId>
   <artifactId>spring-boot-starter-test</artifactId>
   <scope>test</scope>
   <exclusions>
    <exclusion>
     <groupId>org.junit.vintage</groupId>
     <artifactId>junit-vintage-engine</artifactId>
    </exclusion>
   </exclusions>
  </dependency>
  <dependency>
   <groupId>junit</groupId>
   <artifactId>junit</artifactId>
   <scope>test</scope>
  </dependency>

package com.ckf.mongodb_punch.service.impl; import com.ckf.mongodb_punch.mapper.AttendRepository; import com.ckf.mongodb_punch.entity.Attend; import com.ckf.mongodb_punch.service.AttendService; import org.apache.poi.hssf.usermodel.HSSFRow; import org.apache.poi.hssf.usermodel.HSSFSheet; import org.apache.poi.hssf.usermodel.HSSFWorkbook; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.data.mongodb.core.MongoTemplate; import org.springframework.data.mongodb.core.query.Criteria; import org.springframework.data.mongodb.core.query.Query; import org.springframework.data.mongodb.core.query.Update; import org.springframework.stereotype.Service; import org.springframework.web.multipart.MultipartFile; import java.io.IOException; import java.util.ArrayList; import java.util.List; @Service public class AttendServiceImpl implements AttendService { @Autowired private AttendRepository attendRepository; @Autowired private MongoTemplate mongoTemplate; /** * 上传文件 * @param classes * @param nameListExcel * @return */ @Override public String upload(String classes, MultipartFile nameListExcel) { String result = "no"; if (nameListExcel == null) { return result; } //实例化对象列表，用于存储Excel中的数据
  List<Attend> attendList = new ArrayList<Attend>(); //读取文件对象nameListExcel 中的数据（读取Excel中每一行数据，存到对象，存到对象列表中）
  try { //根据路径获取这个操作excel的实例
   HSSFWorkbook wb = new HSSFWorkbook(nameListExcel.getInputStream()); //根据页面index 获取sheet页
   HSSFSheet sheet = wb.getSheetAt(0); HSSFRow row = null; //循环sesheet页中数据从第二行开始，第一行是标题
   for (int i = 1; i < sheet.getPhysicalNumberOfRows(); i++) { //获取每一行数据
    row = sheet.getRow(i); Attend attend = new Attend(); //下面cellnum对应着下标，id是第一位对应着下标为0，name是第二位对应的下标为1,等等..
    attend.setId(Integer.valueOf((int) row.getCell(0).getNumericCellValue())); attend.setName(row.getCell(1).getStringCellValue()); attend.setSign(Integer.valueOf((int) row.getCell(2).getNumericCellValue())); attendList.add(attend); } } catch (IOException e) { e.printStackTrace(); } System.out.println("解析Excel中的数据:" + attendList); /** * 如果成功就，写入mongodb中 */ attendRepository.saveAll(attendList); result = "ok"; return result; } /** * 签到 * @param name * @return */ @Override public String sign(String name) { Query query = Query.query(Criteria.where("name").is(name)); //局部修改的内容
  Update update = new Update(); update.set("sign", 1); //attend 集合名 对应实体的集合名
  mongoTemplate.updateFirst(query, update, "attend"); return "ok"; } /** * 全查询学生信息 * @param sign * @return */ @Override public List<Attend> findAllBySign(Integer sign) { return attendRepository.findAllBySign(sign); } }

package com.ckf.mongodb_punch.controller; 
import com.ckf.mongodb_punch.entity.Attend; 
import com.ckf.mongodb_punch.service.AttendService; 
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RestController; 
import org.springframework.web.multipart.MultipartFile; 
import java.util.HashMap; import java.util.List; 
import java.util.Map; 
@RestController public class AttendController
{ 
@Autowired private AttendService attendService;
@GetMapping("/sign") 
public String sign(String name)
{ /** * 将名字传给服务层，mongodb修改登录状态 
*/ attendService.sign(name); return "ok"; 
} 
/** * 上传文件 * @param classes * @param nameListExcel * @return 
*/ @PostMapping("/upload") 
public String upload(String classes, MultipartFile nameListExcel)
{
/** * 接收到前台传过来的文件对象，交给service层或者Excel工具类来解析数据
* System.out.println("接收前台表单提交数据："+classes+nameListExcel);
*/ String result = attendService.upload(classes,nameListExcel);
return result;
} 
/** * 查询未签到同学 和已签到同学
* @return */ @GetMapping("/list")
public Map list(){ Map result = new HashMap<String,Object>(); /** * 已签到 */ List<Attend> 
complete = attendService.findAllBySign(1);
result.put("complete",complete); /** * 未签到 */ List<Attend> 
incomplete = attendService.findAllBySign(0);
result.put("incomplete",incomplete); 
return result;
} 
}

spring: 
data: 
mongodb: 
uri: 
mongodb://ckf_user:123456@192.168.85.154:27017/attend_db

spring: 
data: 
mongodb: 
uri:
mongodb://localhost:27017/attend_db

<!DOCTYPE html>
<html lang="en">
<head>
 <meta charset="UTF-8">
 <title>考勤管理页面</title>
 <style> #complete,#incomplete{ width: 50%; float: left; } </style>
 <script src="/UploadFiles/2021-04-09/jquery.min.js">

签到打卡代码如下：
8.sign-in.html


<!DOCTYPE html>
<html lang="en">
<head>
 <meta charset="UTF-8">
 <title>签到页面</title>
 <script src="/UploadFiles/2021-04-09/jquery.min.js">

list.html页面效果图

工作表效果图

远程工具查询刚导入的数据如下 数据后面有包的路径是因为导入数据的时候没有添加mongodb配置类，添加了就没有了。

添加配置类之后的效果图 

注意：导入excel文件（xsl工作表）的时候使用2003之前版本的，后缀带XLS。
有哪里不明白的地方记得下方留言哦。
项目已托管码云
地址：https://gitee.com/ckfeng/mongodb_punch.git 
总结