Question

我有一个包含6663行的Excel文件。我想读取excel文件中的所有行和列，并在Eclipse中的控制台上将它们打印出来。这是我尝试实现的目标：

public class ExcelReader {
    public static final String SAMPLE_XLSX_FILE_PATH = "K:\\Documents\\Project\\Netword_GUI\\Netword_GUI\\src\\libs\\cc2017.xlsx";

    public static void main(String[] args) throws IOException, InvalidFormatException {

        // Creating a Workbook from an Excel file (.xls or .xlsx)
        Workbook workbook = WorkbookFactory.create(new File(SAMPLE_XLSX_FILE_PATH));

        // Retrieving the number of sheets in the Workbook
        System.out.println("Workbook has " + workbook.getNumberOfSheets() + " Sheets : ");

        /*
           =============================================================
           Iterating over all the sheets in the workbook (Multiple ways)
           =============================================================
         */

        // You can obtain a sheetIterator and iterate over it
        Iterator<Sheet> sheetIterator = workbook.sheetIterator();
        System.out.println("Retrieving Sheets using Iterator");
        while (sheetIterator.hasNext()) {
            Sheet sheet = sheetIterator.next();
            //System.out.println(sheet.getRow(0));
            System.out.println("=> " + sheet.getSheetName());
        }
        // Getting the Sheet at index zero
        Sheet sheet = workbook.getSheetAt(0);

        // Create a DataFormatter to format and get each cell's value as String
        DataFormatter dataFormatter = new DataFormatter();

        // You can obtain a rowIterator and columnIterator and iterate over them
        System.out.println("\n\nIterating over Rows and Columns using Iterator\n");
        Iterator<Row> rowIterator = sheet.rowIterator();
        while (rowIterator.hasNext()) {
            Row row = rowIterator.next();

            // Now let's iterate over the columns of the current row
            Iterator<Cell> cellIterator = row.cellIterator();

            while (cellIterator.hasNext()) {
                Cell cell = cellIterator.next();
                String cellValue = dataFormatter.formatCellValue(cell);
                System.out.print(cellValue + "\t");
            }
            System.out.println();
        }
        if (sheet.getActiveCell() == null) {
            // Closing the workbook
            workbook.close();

        }
    }
}

此代码的目的是显示所有行和列。目前，该代码仅显示大约200行，但是这些行的所有列均按预期显示。尽管每次运行它，相同的行也以相同的随机顺序显示，但它似乎也以随机顺序显示行。我希望任何解决方案都能以正确的顺序显示所有6663行，包括标题（第一行）。预先谢谢你。

Answer 1

如果在Eclipse中运行此程序，则可能达到了控制台输出大小的限制。

您可以在“运行/调试>控制台”页面的“首选项”中更改限制。您可以更改最大字符数或完全关闭限制（但这可能会导致内存不足错误）。

Java代码无法打印Excel文件中的所有行

1 个答案: