Springboot 使用POI 将Excel的数据表导入到数据库 案例

页面：

<a href="javascript:upload();" class="button float-right"><span class="icon-plus" style="margin-right: 5px;"></span>导入学生</a>

<section  style="display: none" >
   <div id="uploadFileWrap">
       <form method="post" action="${request.contextPath}/admin/excel" id="excelForm" enctype="multipart/form-data">
           <input  id="fileName" size="100" name="file_Name"  type="file"/>
       </form>
   </div>
</section>

<script src="${request.contextPath}/static/admin/js/assert/jquery.js"></script>
<script src="${request.contextPath}/static/admin/js/assert/pintuer.js"></script>
<script src="${request.contextPath}/static/admin/js/assert/respond.js"></script>
<script src="${request.contextPath}/static/admin/js/assert/jquery.mloading.js" type="text/javascript"
        charset="utf-8"></script>
<script src="${request.contextPath}/static/admin/js/assert/alert.js" type="text/javascript" charset="utf-8"></script>
<script src="${request.contextPath}/static/admin/js/vue/vue.min.js" type="text/javascript" charset="utf-8">
</script>

<script type="text/javascript">

  function upload() {
        if (M) {
            return M.show();
        }
        M = jqueryAlert({
            'style': 'pc',
            'title': '确定导入学生',
            'content': $("#uploadFileWrap"),
            'modal': true,
            'contentTextAlign': 'left',
            'animateType': 'linear',
            'buttons': {
                '确认': function () {
                    //将excele 表格传入后台处理
                    // document.getElementById("excelForm").submit();
                    $(".alert-content #excelForm").submit();

                    M.close();
                },
            }
        })

    }
</script>

Controller层：

package com.haue.jobonline.controller;
import com.haue.jobonline.service.ExcelService;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.multipart.MultipartFile;
import javax.annotation.Resource;
/**
 * @author 赵鑫
 * @Time: 2018/7/21
 * @Email:[email protected]
 */
@Controller
public class ExcelController {
    @Resource
    private ExcelService excelService;

    @RequestMapping(value = "/admin/excel")
    public String upload(@RequestParam("file_Name") MultipartFile file,Model model) {
        boolean flag;
        String name = file.getOriginalFilename();
//        File file1 = new File("E:\\" + name);
        System.out.println(name);
        if (file.getOriginalFilename().isEmpty() || file.getSize() == 0) {
            String message="上传失败";
            model.addAttribute("m",message);
            return "/admin/400";
        }
        try {
            String message=excelService.studentExcel(name,file);
            if (!message.equals("success")){
                model.addAttribute("m",message);
                return "/admin/400";
            }
        } catch (Exception e) {
            e.printStackTrace();
            return "/admin/404";
        }

        return "redirect:/admin/toStudentListIndex";
    }
}

Service层：

import org.springframework.web.multipart.MultipartFile;

/**
 * @author 赵鑫
 * @Time: 2018/7/21
 * @Email:[email protected]
 */
public interface ExcelService {
    String studentExcel(String fileName, MultipartFile file) throws Exception;
}

import com.haue.jobonline.dao.StudentDao;
import com.haue.jobonline.entity.Student;
import com.haue.jobonline.service.ExcelService;
//import com.haue.jobonline.utils.MD5Utils;
import com.haue.jobonline.service.StudentManagerService;
import com.haue.jobonline.utils.MD5Utils;
import com.haue.jobonline.utils.UUIDUtils;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.multipart.MultipartFile;

import javax.annotation.Resource;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.text.DecimalFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;

/**
 * @author 赵鑫
 * @Time: 2018/7/21
 * @Email:[email protected]
 */
@Service
@Transactional
public class ExcelServiceImpl implements ExcelService {
    @Resource
    private StudentManagerService studentManagerService;
    @Resource
    private StudentDao studentDao;

    @Override
    @Transactional(readOnly = false, rollbackFor = Exception.class)
    public String studentExcel(String fileName, MultipartFile file) throws Exception {
         MD5Utils md5Utils =new MD5Utils();
         UUIDUtils uuidUtils=new UUIDUtils();
        String message = "success";
        List<Student> studentList = new ArrayList<Student>();

        boolean isExcel2003 = false;
      //判断excle类型失败    代码 已删除        上面定义的isExcel2003   实际上并没有用

        DecimalFormat df = new DecimalFormat("0");

        InputStream is=file.getInputStream();
        Workbook wb = null;
        if (isExcel2003) {
            wb = new HSSFWorkbook(is);
        } else {
            wb = new XSSFWorkbook(is);
        }
        Sheet sheet = wb.getSheetAt(0);
        if (sheet == null) {
            message = "Excel 表为空";
        }
        Student student;
        System.out.println(sheet.getLastRowNum());
        for (int r = 1; r <= sheet.getLastRowNum(); r++) {
            Row row = sheet.getRow(r);
            if (row == null) {
                continue;
            }

            student = new Student();
            //姓名
            if (row.getCell(0).getCellType() != 1) {
                message="导入失败(第" + (r + 1) + "行,姓名请设为文本格式）";
                return message;
//                throw new Exception("导入失败(第" + (r + 1) + "行,姓名请设为文本格式)");
            }
            String name = row.getCell(0).getStringCellValue();

            if (name == null || name.isEmpty()) {
                message="导入失败(第" + (r + 1) + "行,姓名未填写）";
                return  message;
//                throw new Exception("导入失败(第" + (r + 1) + "行,姓名未填写)");
            }


            //性别
            if (row.getCell(1).getCellType() != 1) {
                message="导入失败(第" + (r + 1) + "行,性别请设为文本格式";
                return message;
//                throw new Exception("导入失败(第" + (r + 1) + "行,性别请设为文本格式)");
            }
            String sex = row.getCell(1).getStringCellValue();

            if (sex == null || sex.isEmpty()) {
                message="导入失败(第" + (r + 1) + "行,性别未填写)";
                return message;
//                throw new Exception("导入失败(第" + (r + 1) + "行,性别未填写)");
            }
                String level=null;
            //级别
            if (row.getCell(2).getCellType() == 1) {
                 level = row.getCell(2).getStringCellValue();
                if (level == null || level.isEmpty()) {
                    message="导入失败(第" + (r + 1) + "行,级别未填写)";
                    return  message;
//                    throw new Exception("导入失败(第" + (r + 1) + "行,级别未填写)");
                }
//                if (row.getCell(2).getCellType()==0){
//
//                }
//                throw new Exception("导入失败(第" + (r + 1) + "行,级别请设为文本格式)");
            }else if (row.getCell(2).getCellType() == 0){
                 level=df.format(row.getCell(2).getNumericCellValue());
                if (level == null || level.isEmpty()) {
                    message="导入失败(第" + (r + 1) + "行,级别未填写)";
                    return  message;
//                    throw new Exception("导入失败(第" + (r + 1) + "行,级别未填写)");
                }
            }else{
                message="导入失败(第" + (r + 1) + "行,级别请设为文本格式或数值类型)";
                return  message;
//                throw new Exception("导入失败(第" + (r + 1) + "行,级别请设为文本格式或数值类型");
            }

            System.out.println(level);


            //班级
//            if (row.getCell(3).getCellType() != 1) {
//                throw new Exception("导入失败(第" + (r + 1) + "行,班级请设为文本格式)");
//            }
//            String studentClass = row.getCell(3).getStringCellValue();
//
//            if (studentClass == null || studentClass.isEmpty()) {
//                throw new Exception("导入失败(第" + (r + 1) + "行,班级未填写)");
//            }
            String studentClass=null;
            if (row.getCell(3)!=null){
                if (row.getCell(3)!=null){
                    if (row.getCell(3).getCellType() == 1) {
                        studentClass = row.getCell(3).getStringCellValue();
                        if (studentClass == null || studentClass.isEmpty()){
                            message="导入失败(第" + (r + 1) + "行,班级未填写)";
                            return message;
//                    throw new Exception("导入失败(第" + (r + 1) + "行,班级未填写)");
                        }

                    }else if (row.getCell(3).getCellType() == 0){
                        studentClass =df.format(row.getCell(3).getNumericCellValue());
                        if (studentClass == null || studentClass.isEmpty()){
                            message="导入失败(第" + (r + 1) + "行,班级未填写)";
                            return message;
//                    throw new Exception("导入失败(第" + (r + 1) + "行,班级未填写)");
                        }
                    }
                }
            } else{
                message="导入失败(第" + (r + 1) + "行,班级请设为文本格式或数值格式))";
                return message;
//                throw new Exception("导入失败(第" + (r + 1) + "行,班级请设为文本格式或数值格式)");
            }
            System.out.println(studentClass);

            //专业
            if (row.getCell(4).getCellType() != 1) {
                message="导入失败(第" + (r + 1) + "行,专业请设为文本格式)";
                return message;
//                throw new Exception("导入失败(第" + (r + 1) + "行,专业请设为文本格式)");
            }
            String studentSpecially = row.getCell(4).getStringCellValue();
            System.out.println(studentSpecially);
            if (studentSpecially == null || studentSpecially.isEmpty()) {
                message="导入失败(第" + (r + 1) + "行,专业未填写)";
                return message;
//                throw new Exception("导入失败(第" + (r + 1) + "行,专业未填写)");
            }
            //学号
            String studentNum=null;
            if (row.getCell(5)!=null){

                if (row.getCell(5).getCellType() == 1) {
                    studentNum = row.getCell(5).getStringCellValue();
                    if (studentNum == null || studentNum.isEmpty()){
                        message="导入失败(第" + (r + 1) + "行,学号级未填写)";
                        return message;
//                    throw new Exception("导入失败(第" + (r + 1) + "行,学号级未填写)");
                    }

                }else if (row.getCell(5).getCellType() == 0){
                    studentNum =df.format(row.getCell(5).getNumericCellValue());
                    if (studentNum == null || studentNum.isEmpty()){
                        message="导入失败(第" + (r + 1) + "行,学号级未填写)";
                        return message;
//                    throw new Exception("导入失败(第" + (r + 1) + "行,学号未填写)");
                    }
                }
            }
           else{
                message="导入失败(第" + (r + 1) + "行,学号请设为文本格式或数值格式)";
                return message;
//                throw new Exception("导入失败(第" + (r + 1) + "行,学号请设为文本格式或数值格式)");
            }
            System.out.println("姓名:" + name + "---" + "性别:" + sex + "----" + "级别:" + level + "-----" + "班级:" + studentClass + "---" + "专业:" + studentSpecially + "---" + "学号:" + studentNum + "");
            student.setStudentName(name);
            student.setStudentSex(sex);
            student.setStudentLevel(level);
            student.setStudentClass(studentClass);
            student.setStudentSpecialty(studentSpecially);
            student.setStudentSchoolNum(studentNum);
            student.setStudentLoginPassword(md5Utils.GetMD5Code(studentNum));
            student.setStudentId(uuidUtils.getUUID());
            //查询表中是否有重复学号的   如果有 给出提示     数据全部不导入
            List<Student> list=studentDao.findAll();
            for (int i=0;i<list.size();i++){
                System.out.println(list.get(i).getStudentSchoolNum());
                if (list.get(i).getStudentSchoolNum().equals(studentNum)){
                    return "学号为"+studentNum+"的学生已存在";
                }
            }

            studentList.add(student);
        }
        for (Student s :studentList){
            studentManagerService.addStudent(s);
        }
        System.out.println(message);
        return message;
    }
}