java - Excel文件导入java spring hibernate

Question

我正在研究spring hibernate，我想导入一个excel文件。我想检查扩展名，以便除了 excel 之外没有人可以上传文件，即限制导入具有以下扩展名之一的文件：xls 或 xlsx。我的代码在这里：

public class ImportCandidatesFormController extends BNUAbstractFormController {

    private ImportCandidatesBL importCandidatesBL;
    private ExcelReader reader;

    @Override
    protected ModelAndView processFormSubmission(HttpServletRequest request,
            HttpServletResponse response, Object command, BindException arg3)
            throws Exception {

        FileUploadVO vo = (FileUploadVO) command;
        MultipartFile file = vo.getFile();

        System.out.println("File Uploaded: " + file.getOriginalFilename());
        boolean isSuccessful = importCandidatesBL.importAndSaveCandidates(
                file.getInputStream(),
                SessionUtil.getCurrentUser(request.getSession()));

        return new ModelAndView(new RedirectView("importCandidates.do?s=1"));
    }

    public ImportCandidatesBL getImportCandidatesBL() {
        return importCandidatesBL;
    }

    public void setImportCandidatesBL(ImportCandidatesBL importCandidatesBL) {
        this.importCandidatesBL = importCandidatesBL;
    }
}

Answer 1

String lowercaseFileName = file.getOriginalFilename().toLowerCase();
if (!(lowerCaseFileName.endsWith(".xls") || lowerCaseFileName.endsWith(".xlsx"))) {
    // reject file
}