java后端服务器读取excel将数据导入数据库

使用的是easypoi，官网文档：http://easypoi.mydoc.io/

 /**
      * 导入Excel文件
      */
     @PostMapping("/importTeacher")
     @ResponseBody
     public RestResponse importTeacher(@RequestParam MultipartFile file) {
         System.out.println("进入1");
         ImportParams params =  new ImportParams();
         //设置excel表的标题
         params.setTitleRows(1);
         //设置excel字段的名字
         params.setHeadRows(1);
         List<TeacherDto> list = null;

         try {
             list = ExcelImportUtil.importExcel(file.getInputStream(), TeacherDto.class, params);
         } catch (Exception e) {
             e.printStackTrace();
             return RestResponse.failure("导入文件异常");
         }

         if (!list.isEmpty()){
             System.out.println("进入2");
             TeacherDao teacherDao=new TeacherDao();
                 //插入数据
             teacherDao.insert(list);

         }else {
             return RestResponse.failure("文件没有数据,导入失败");
         }
         return RestResponse.success("导入成功");
     }

@GetMapping("/exportTeacher")
    public void exportTeacher(HttpServletResponse response) throws IOException {
        TeacherDao teacherDao=new TeacherDao();
        List<TeacherDto> list=teacherDao.export();

        ExportParams params = new ExportParams("teacher","teacher");
        Workbook workbook = ExcelExportUtil.exportBigExcel(params, TeacherDto.class, list);
        ExcelExportUtil.closeExportBigExcel();
        //文件命名
        SimpleDateFormat df = new SimpleDateFormat("MMddHHmmss");
        String date = df.format(new Date());
        String filename = "teacher_"+date+".xlsx";
        // 进行转码，使其支持中文文件名
        response.reset();
        response.setContentType("application/x-download; charset=utf-8");
        //清除jsp页面缓存，用window open打开非jsp页面导出，有此项IE会报错
        if (true) {
            //http 1.1
            response.setHeader("Cache-Control", "no-cache");
            //http 1.0
            response.setHeader("Pragma", "no-cache");
        }//http 1.0和1.1都支持
        response.setDateHeader("Expires", 0);
        filename = URLEncoder.encode(filename, "UTF-8");
        response.addHeader("Content-Disposition", "attachment; filename=\"" + filename + "\"");
        workbook.write(response.getOutputStream());
    }

需要一个对应的实体类

 public class TeacherDto  {
     public String getUid() {
         return uid;
     }

     public void setUid(String uid) {
         this.uid = uid;
     }

     public String getTenant_id() {
         return tenant_id;
     }

     public void setTenant_id(String tenant_id) {
         this.tenant_id = tenant_id;
     }

     public String getSchool_id() {
         return school_id;
     }

     public void setSchool_id(String school_id) {
         this.school_id = school_id;
     }

     public String getNickname() {
         return nickname;
     }

     public void setNickname(String nickname) {
         this.nickname = nickname;
     }

     public Integer getSex() {
         return sex;
     }

     public void setSex(Integer sex) {
         this.sex = sex;
     }

     public String getAge() {
         return age;
     }

     public void setAge(String age) {
         this.age = age;
     }

     public String getSchool() {
         return school;
     }

     public void setSchool(String school) {
         this.school = school;
     }

     public String getClazz() {
         return clazz;
     }

     public void setClazz(String clazz) {
         this.clazz = clazz;
     }

     public String getMobile() {
         return mobile;
     }

     public void setMobile(String mobile) {
         this.mobile = mobile;
     }

     public String getAccount() {
         return account;
     }

     public void setAccount(String account) {
         this.account = account;
     }

     public String getPassword() {
         return password;
     }

     public void setPassword(String password) {
         this.password = password;
     }

     @Override
     public String toString() {
         return "TeacherDto{" +
                 "uid='" + uid + '\'' +
                 ", tenant_id='" + tenant_id + '\'' +
                 ", school_id='" + school_id + '\'' +
                 ", nickname='" + nickname + '\'' +
                 ", sex=" + sex +
                 ", age='" + age + '\'' +
                 ", school='" + school + '\'' +
                 ", clazz='" + clazz + '\'' +
                 ", mobile='" + mobile + '\'' +
                 ", account='" + account + '\'' +
                 ", password='" + password + '\'' +
                 '}';
     }

     private String uid;
     @Excel(name="tenant_id")
     private String tenant_id;
     @Excel(name="school_id")
     private String school_id;
     @Excel(name="nickname")
     private String nickname;
     @Excel(name="sex")
     private Integer sex;
     @Excel(name="age")
     private String age;
     @Excel(name="school")
     private String school;
     @Excel(name="clazz")
     private String clazz;
     @Excel(name="mobile")
     private String mobile;
     @Excel(name="account")
     private String account;
     @Excel(name="password")
     private String password;
 }

前端使用的是layui

<form class="layui-form">
    <div class="layui-inline">
        <button class="layui-btn" id="importExcel" type="button"><i class="layui-icon"></i>导入</button>
    </div>
    <div class="layui-inline">
        <button class="layui-btn" id="exportExcel" type="button"><i class="layui-icon"></i>导出</button>
    </div>
</form>

 <script>

     layui.use(['layer','form','table','upload'], function() {
         var layer = layui.layer,
                 $ = layui.jquery,
                 form = layui.form,
                 table = layui.table,
                 upload = layui.upload;
         //导入
         upload.render({
             elem: '#importExcel'
             ,url: "${base}/admin/excel/importTeacher"
             ,accept: 'file' //普通文件
             ,multiple: true
             ,done: function(res){
                 if(res.success){
                     layer.msg("上传成功",{time: 1000},function(){
                         //上传成功后刷新

                     });
                 }else{
                     if(res.message == "导入失败！" || res.message == "导入文件格式不对" || res.message == "导入文件没有数据"){
                         layer.msg(res.message);
                     }else{
                         layer.msg(res.message);
                     }
                 }
             }
         });

         //导出
         $('#exportExcel').on('click', function () {
             window.open('${base}/admin/excel/exportTeacher');
             // window.open('http://www.imooc.com/','_blank','width=400,height=500,menubar=no,toolbar=no');
         });

     });