导入导出配置
@ExcelIgnore
@ExcelProperty("姓名") 
//导出
    @RequestMapping("exportExcel")
    public void exportExcel(HttpServletResponse response) throws IOException {
        //1.设置响应数据
        response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
        response.setCharacterEncoding("utf-8");
        String fileName = URLEncoder.encode("教师列表", "UTF-8").replaceAll("/+", "%20");
        response.setHeader("Content-disposition", "attachment;filename*=utf-8''" + fileName + ".xlsx");
        //2.查询要导出的数据
        List<TeacherVo> stuList = teacherService.findList();
        //3.使用EasyExcel完成导出
        EasyExcel.write(response.getOutputStream())
                .head(TeacherVo.class)
                .excelType(ExcelTypeEnum.XLSX)
                .sheet("教师列表")
                .doWrite(stuList);
        
        
    }

 @RequestMapping("/importExcel")
    public R importExcel(MultipartFile file) throws IOException {
        
        
        EasyExcel.read(file.getInputStream(), TeacherVo.class, new AnalysisEventListener() {
            @Override
            public void invoke(Object o, AnalysisContext analysisContext) {
                //多表
                TeacherVo studentVo= (TeacherVo) o;
                String cname = studentVo.getCname();
                LambdaQueryWrapper<Cony> qw = new LambdaQueryWrapper<>();
                qw.eq(Cony::getName,cname);
                List<Cony> deptList = conyMapper.selectList(qw);
                Integer sid = deptList.get(0).getId();
                studentVo.setSid(sid);
                teacherService.save(studentVo);
            }
            
            @Override
            public void doAfterAllAnalysed(AnalysisContext analysisContext) {
            
            }
        }).sheet().doRead();
        
        return new R(1,"导入成功");
    }


importExcel(){
                this.dialogVisible2=true;
            },
            importExcelSuccess(){
                this.$message({
                    message: "导入excel成功",
                    type: 'success'
                });
                this.dialogVisible2=false;
                this.initData();
            },
            handleImgUploadSuccess(res,file){
                this.form.img = res;
            },