如何使用Apache POI删除行

Question

我试图删除第三行

这是我根据rgettman，Leo，zibi的评论进行的编辑。谢谢。

public class MainTest {

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

        FileInputStream file  =   new FileInputStream(new  File("test.xlsx") );
        XSSFWorkbook wb = new XSSFWorkbook(file);
        XSSFSheet sheet = wb.getSheetAt(0);
        sheet.removeRow(sheet.getRow(3));
//      sheet.shiftRows(3, 3, -1);

        File outWB = new File("testResult.xlsx");
        OutputStream out = new FileOutputStream(outWB);
        wb.write(out);
        out.flush();
        out.close();


        System.exit(0);
    }

}

但这会删除一行中的值，但不会删除该行

Answer 1

如果您使用的是XLS文件（不是XLSX），则应使用HSSFWorkbook。我刚刚测试了以下解决方案，并且一切正常：

    File file = new File(....);
    FileInputStream fis = new FileInputStream(file);
    HSSFWorkbook wb = new HSSFWorkbook(fis);
    HSSFSheet sheet = wb.getSheetAt(0);

    sheet.shiftRows(3, 3, -1);

    File outWB = new File(.....);
    OutputStream out = new FileOutputStream(outWB);
    wb.write(out);
    out.flush();
    out.close();

甚至更好地使用Workbook工厂，该工厂会为您进行识别：

    Workbook wb = WorkbookFactory.create(file);
    Sheet sheet = wb.getSheetAt(0);
    sheet.shiftRows(3, 3, -1);

在下面，您可以找到执行行删除的功能，该功能可以在xls和xlsx中使用（已测试；））。

Workbook wb = WorkbookFactory.create(file);
Sheet sheet = wb.getSheetAt(0);
removeRow(sheet, 2);
File outWB = new File(...);
OutputStream out = new FileOutputStream(outWB);
wb.write(out);
out.flush();
out.close();


public static void removeRow(Sheet sheet, int rowIndex) {
    int lastRowNum = sheet.getLastRowNum();
    if (rowIndex >= 0 && rowIndex < lastRowNum) {
        sheet.shiftRows(rowIndex + 1, lastRowNum, -1);
    }
    if (rowIndex == lastRowNum) {
        Row removingRow = sheet.getRow(rowIndex);
        if (removingRow != null) {
            sheet.removeRow(removingRow);
        }
    }
}