确切知道的唯一方法是测试行 . 这是我用于同一问题的解决方案：

int lastRowIndex = -1;

if( sheet.getPhysicalNumberOfRows() > 0 )

{

// getLastRowNum() actually returns an index, not a row number

lastRowIndex = sheet.getLastRowNum();

// now, start at end of spreadsheet and work our way backwards until we find a row having data

for( ; lastRowIndex >= 0; lastRowIndex-- ){

Row row = sheet.getRow( lastRowIndex );

if( row != null ){

break;

}

}

}

注意：这不会检查看似空但不是的行，例如其中包含空字符串的单元格 . 为此，您需要一个更完整的解决方案，例如：

private int determineRowCount()

{

this.evaluator = workbook.getCreationHelper().createFormulaEvaluator();

this.formatter = new DataFormatter( true );

int lastRowIndex = -1;

if( sheet.getPhysicalNumberOfRows() > 0 )

{

// getLastRowNum() actually returns an index, not a row number

lastRowIndex = sheet.getLastRowNum();

// now, start at end of spreadsheet and work our way backwards until we find a row having data

for( ; lastRowIndex >= 0; lastRowIndex-- )

{

Row row = sheet.getRow( lastRowIndex );

if( !isRowEmpty( row ) )

{

break;

}

}

}

return lastRowIndex;

}

/**

* Determine whether a row is effectively completely empty - i.e. all cells either contain an empty string or nothing.

*/

private boolean isRowEmpty( Row row )

{

if( row == null ){

return true;

}

int cellCount = row.getLastCellNum() + 1;

for( int i = 0; i < cellCount; i++ ){

String cellValue = getCellValue( row, i );

if( cellValue != null && cellValue.length() > 0 ){

return false;

}

}

return true;

}

/**

* Get the effective value of a cell, formatted according to the formatting of the cell.

* If the cell contains a formula, it is evaluated first, then the result is formatted.

*

* @param row the row

* @param columnIndex the cell's column index

* @return the cell's value

*/

private String getCellValue( Row row, int columnIndex )

{

String cellValue;

Cell cell = row.getCell( columnIndex );

if( cell == null ){

// no data in this cell

cellValue = null;

}

else{

if( cell.getCellType() != Cell.CELL_TYPE_FORMULA ){

// cell has a value, so format it into a string

cellValue = this.formatter.formatCellValue( cell );

}

else {

// cell has a formula, so evaluate it

cellValue = this.formatter.formatCellValue( cell, this.evaluator );

}

}

return cellValue;

}