private static List<ImportViewModel> readExcelFile() { List<ImportViewModel> datas = new ArrayList<>(); FileInputStream inputStream = null; Workbook workbook = null; try { inputStream = new FileInputStream("/sdcard/Template/IC1001.xlsx"); workbook = WorkbookFactory.create(inputStream); Sheet sheet = workbook.getSheetAt(0); Iterator<Row> rowIterator = sheet.rowIterator(); if (rowIterator.hasNext()) { rowIterator.next(); while (rowIterator.hasNext()) { Row row = rowIterator.next(); Iterator<Cell> columnIterator = row.cellIterator(); ImportViewModel importViewModel = new ImportViewModel(); Cell cell = columnIterator.next(); importViewModel.setName("商品名称:" + String.valueOf(cell.getNumericCellValue())); cell = columnIterator.next(); importViewModel.setType("商品类型:" + String.valueOf(cell.getNumericCellValue())); cell = columnIterator.next(); importViewModel.setStyle("商品款式:" + String.valueOf(cell.getNumericCellValue())); cell = columnIterator.next(); importViewModel.setInventoryNum("预期应有库存:" + String.valueOf(cell.getNumericCellValue())); datas.add(importViewModel); } } } catch (IOException | InvalidFormatException e) { e.printStackTrace(); } finally { try { if (workbook != null) { workbook.close(); } if (inputStream != null) { inputStream.close(); } } catch (IOException e) { e.printStackTrace(); } } return datas; }java.lang.IllegalStateException: Cannot get a numeric value from a text cell怎么获取单元格中的字符串

private static List<ImportViewModel> readExcelFile() { List<ImportViewModel> datas = new ArrayList<>(); FileInputStream inputStream = null; Workbook workbook = null; try { inputStream = new FileInputStream("/sdcard/Template/IC1001.xlsx"); workbook = WorkbookFactory.create(inputStream); Sheet sheet = workbook.getSheetAt(4); Iterator<Row> rowIterator = sheet.rowIterator(); while (rowIterator.hasNext()) { Row row = rowIterator.next(); ImportViewModel importViewModel = new ImportViewModel(); Iterator<Cell> columnIterator = row.cellIterator(); while (columnIterator.hasNext()) { importViewModel.setName("商品名称:" + columnIterator.next().getStringCellValue()); importViewModel.setType("商品类型:" + columnIterator.next().getStringCellValue()); importViewModel.setStyle("商品款式:" + columnIterator.next().getStringCellValue()); importViewModel.setInventoryNum("预期应有库存:" + columnIterator.next().getStringCellValue()); datas.add(importViewModel); } } } catch (IOException | InvalidFormatException e) { e.printStackTrace(); } finally { try { if (workbook != null) { workbook.close(); } if (inputStream != null) { inputStream.close(); } } catch (IOException e) { e.printStackTrace(); } } return datas; }将返回值显示到前端页面上

List<ImportViewModel> datas = readExcelFile(); model.addAttribute("datas", datas); return "excelData"; } 然后在HTML页面中使用Thymeleaf标签来渲染数据： html <table> <thead> <tr> <th>商品...

private List<String> readExcelFile() { List<String> datas = new ArrayList<>(); try { FileInputStream inputStream = new FileInputStream("/sdcard/Template/IC1001.xlsx"); Workbook workbook = WorkbookFactory.create(inputStream); Sheet sheet = workbook.getSheetAt(0); for (Row row : sheet) { for (Cell cell : row) { datas.add(cell.toString()); } } workbook.close(); } catch (IOException | InvalidFormatException e) { e.printStackTrace(); } return datas; }读取不到excel中的数据，怎么解决

private List<List<String>> readExcelFile() { List<List<String>> datas = new ArrayList<>(); try { FileInputStream inputStream = new FileInputStream("/sdcard/Template/IC1001.xlsx"); Workbook ...

private static List<String> readExcelFile() { List<String> datas = new ArrayList<>(); try (FileInputStream inputStream = new FileInputStream("/sdcard/Template/IC1001.xlsx"); Workbook workbook = WorkbookFactory.create(inputStream)) { // 获取第一个 Sheet Sheet sheet = workbook.getSheetAt(4); // 遍历 Sheet 中的每一行和每一列 Iterator<Row> rowIterator = sheet.rowIterator(); while (rowIterator.hasNext()) { ImportViewModel importViewModel = new ImportViewModel(); Row row = rowIterator.next(); while (rowIterator.hasNext()) { for (int i = 0; i < datas.size(); i+=4) { importViewModel.setName("商品名称:" + row.getCell(i).getStringCellValue()); importViewModel.setType("商品名称:" + row.getCell(i+1).getStringCellValue()); importViewModel.setStyle("商品名称:" + row.getCell(i+2).getStringCellValue()); importViewModel.setInventoryNum("预期应有库存:" + row.getCell(i+3).getStringCellValue()); } } workbook.close(); inputStream.close(); } } catch (IOException | InvalidFormatException e) { e.printStackTrace(); } return datas; }有什么问题，怎么修改

private static List<ImportViewModel> readExcelFile() { List<ImportViewModel> datas = new ArrayList<>(); FileInputStream inputStream = null; Workbook workbook = null; try { inputStream = new ...

private List<String> readExcelFile() { List<String> datas = new ArrayList<>(); File sdDir; FileInputStream inputStream = null; Workbook workbook = null; try { // 获取 Excel 文件路径 sdDir = new File("/sdcard/Template/", "IC1001.xlsx"); // 创建 Workbook 对象 inputStream = new FileInputStream(sdDir); workbook = WorkbookFactory.create(inputStream); // 获取第一个 Sheet Sheet sheet = workbook.getSheetAt(0); // 遍历 Sheet 中的每一行和每一列 Iterator<Row> rowIterator = sheet.rowIterator(); while (rowIterator.hasNext()) { Row row = rowIterator.next(); Iterator<Cell> cellIterator = row.cellIterator(); while (cellIterator.hasNext()) { Cell cell = cellIterator.next(); datas.add(cell.toString()); } } } catch (IOException | InvalidFormatException e) { e.printStackTrace(); } finally { try { if (inputStream != null) { inputStream.close(); } if (workbook != null) { workbook.close(); } } catch (IOException e) { e.printStackTrace(); } } return datas; }有什么问题，怎么解决

private List<String> readExcelFile() { List<String> datas = new ArrayList<>(); File sdDir; try (FileInputStream inputStream = new FileInputStream("/sdcard/Template/IC1001.xlsx"); Workbook workbook...

private List<String> readExcelFile() { List<String> datas = new ArrayList<>(); File sdDir; try { // 获取 Excel 文件路径 sdDir = new File("/sdcard/Template/", "IC1001.xlsx"); // 创建 Workbook 对象 FileInputStream inputStream = new FileInputStream(sdDir); Workbook workbook = WorkbookFactory.create(inputStream); // 获取第一个 Sheet Sheet sheet = workbook.getSheetAt(0); // 遍历 Sheet 中的每一行和每一列 Iterator<Row> rowIterator = sheet.rowIterator(); while (rowIterator.hasNext()) { Row row = rowIterator.next(); Iterator<Cell> cellIterator = row.cellIterator(); while (cellIterator.hasNext()) { Cell cell = cellIterator.next(); datas.add(cell.toString()); } // 关闭 Workbook 和输入流 workbook.close(); inputStream.close(); } } catch (IOException e) { e.printStackTrace(); } catch (InvalidFormatException e) { throw new RuntimeException(e); } return datas; }有什么问题

private List<String> readExcelFile() { List<String> datas = new ArrayList<>(); File sdDir; FileInputStream inputStream = null; Workbook workbook = null; try { // 获取 Excel 文件路径 sdDir = new...

inventoryButton.setOnClickListener( new View.OnClickListener() { @Override public void onClick(View v) { if (isFastClick()) { showLoadToast(); goToMainActivity(); loadExcelFile(); } } private boolean isFastClick() { return ButtonOnCilk.isFastViewClick(inventoryButton, getBaseContext()); } private void showLoadToast() { CustomToast.showLoad(HomeActivity.this, getString(R.string.load)); } private void goToMainActivity() { Intent intent = new Intent(getApplicationContext(), MainActivity.class); intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); startActivity(intent); } private void loadExcelFile() { new AsyncTask<Void, Void, List<String>>() { @Override protected List<String> doInBackground(Void... voids) { return readExcelFile(); } @Override protected void onPostExecute(List<String> data) { showDataInListView(data); } }.execute(); } private void showDataInListView(List<String> data) { listView = findViewById(R.id.rv_list); if (listView != null) { ArrayAdapter<String> adapter = new ArrayAdapter<>(HomeActivity.this, android.R.layout.simple_list_item_1, data); listView.setAdapter(adapter); } } }); private List<String> readExcelFile() { List<String> datas = new ArrayList<>(); try (FileInputStream inputStream = new FileInputStream("/sdcard/Template/IC1001.xlsx"); Workbook workbook = WorkbookFactory.create(inputStream)) { Sheet sheet = workbook.getSheetAt(0); Iterator<Row> rowIterator = sheet.rowIterator(); while (rowIterator.hasNext()) { Row row = rowIterator.next(); Iterator<Cell> cellIterator = row.cellIterator(); while (cellIterator.hasNext()) { Cell cell = cellIterator.next(); datas.add(cell.toString()); } } } catch (IOException | InvalidFormatException e) { e.printStackTrace(); } return datas; }如何优化，举例说明

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