EasyPoi导出数据导入数据

1.导包

2.直接在controller方法中写逻辑

@ApiOperation(value = "导出员工数据")
//注意这使用流输出 必须使用produces="application/octet-stream" 标记出来  否则 会有乱码
//形式输出       和验证码一样 也需要写这个注释
    @GetMapping(value="/export",produces = "application/octet-stream")
    public void exportEmployee(HttpServletResponse response){
        List<Employee> list = employeeService.getEmployee(null);
        ExportParams params = new ExportParams("员工表","员工表", ExcelType.HSSF);
        Workbook workbook = ExcelExportUtil.exportExcel(params, Employee.class, list);
        ServletOutputStream out = null;
        try {
            //流形式
            response.setHeader("content-type","application/octet-stream");
            //防止中文乱码
            response.setHeader("content-disposition","attachment;filename="+ URLEncoder.encode("员工表.xls","UTF-8"));
            out = response.getOutputStream();
            workbook.write(out);
        } catch (IOException e) {
            e.printStackTrace();
        }finally {
            if (null!=out){
                try {
                    out.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }}

3.导入

 @ApiOperation(value = "导入员工数据")
    @PostMapping("/import")
    public RespBean importEmployee(MultipartFile file){
        ImportParams params = new ImportParams();
        //去掉标题行
        params.setTitleRows(1);
        List<Nation> nationList = nationService.list();
        List<PoliticsStatus> politicsStatusList = politicsStatusService.list();
        List<Department> departmentList = departmentService.list();
        List<Joblevel> joblevelList = joblevelService.list();
        List<Position> positionList = positionService.list();
        try {
            List<Employee> list = ExcelImportUtil.importExcel(file.getInputStream(), Employee.class, params);
            list.forEach(employee -> {
                //民族id
                employee.setNationId(nationList.get(nationList.indexOf(new Nation(employee.getNation().getName()))).getId());
                //政治面貌id
                employee.setPoliticId(politicsStatusList.get(politicsStatusList.indexOf(new PoliticsStatus(employee.getPoliticsStatus().getName()))).getId());
                //部门id
                employee.setDepartmentId(departmentList.get(departmentList.indexOf(new Department(employee.getDepartment().getName()))).getId());
                //职称id
                employee.setJobLevelId(joblevelList.get(joblevelList.indexOf(new Joblevel(employee.getJoblevel().getName()))).getId());
                //职位id
                employee.setPosId(positionList.get(positionList.indexOf(new Position(employee.getPosition().getName()))).getId());
            });
            if (employeeService.saveBatch(list)){
                return RespBean.success("导入成功!");
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return RespBean.error("导入失败！");
    }