对于CellRange,我们可以同时为开始/结束行参数传递-1
以应用样式和dataValidators to the entire column。
但是如何跳过标题?
理想的解决方案是使用“ A1:A $”创建的CellRangeAddressList
,但是它只有int
构造函数。
我尝试假设-1
是一个特殊值,这意味着有些特殊,但是CellRangeAddressList(1, -1, ...)
失败,并出现“开始行>结束行”错误。然后,我还尝试假设-1
表示最后一个单元格,但从最后一个到1个CellRangeAddressList(-1, 1, ...)
导致未选择任何单元格。
最后,我尝试从CellRangeAddressList(-1, -1, ...)
中删除第一行,但是据我从docs所知,无法在创建后操纵范围。
答案 0 :(得分:1)
为除第一行之外的整个列创建一个CellRangeAddress
,这意味着CellRangeAddress
从第2行开始,直到最大行数。这取决于SpreadsheetVersion
。在EXCEL2007
中,最大行数是2 ^ 20 =1048576。在EXCEL97
中,最大行数是2 ^ 16 = 65536。
使用SpreadsheetVersion,我们可以得出取决于SpreadsheetVersion
的不同最大行数。
示例:
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.util.CellRangeAddressList;
import org.apache.poi.ss.SpreadsheetVersion;
class CreateCellRangeAddressList {
public static void main(String[] args) throws Exception {
//Workbook workbook = new XSSFWorkbook();
Workbook workbook = new HSSFWorkbook();
// ...
int lastRow = workbook.getSpreadsheetVersion().getLastRowIndex();
CellRangeAddressList cellRangeAddressList = new CellRangeAddressList(
1, // row 2
lastRow,
2, // column C
2);
System.out.println(cellRangeAddressList.getCellRangeAddress(0));
//C2:C1048576 or C2:C65536 dependent on SpreadsheetVersion
// ...
}
}
因为问题是关于除第一行外的整个列的数据验证,所以我们举一个例子。
import java.io.FileOutputStream;
import org.apache.poi.ss.usermodel.*;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.util.CellRangeAddressList;
class CreateExcelDataValidationListsWholeColumn {
public static void main(String[] args) throws Exception {
//Workbook workbook = new HSSFWorkbook();
Workbook workbook = new XSSFWorkbook();
Sheet sheet = workbook.createSheet("Sheet1");
sheet.createRow(0).createCell(1).setCellValue("col2Head");
//data validation in column B, except first row:
DataValidationHelper dvHelper = sheet.getDataValidationHelper();
DataValidationConstraint dvConstraint = dvHelper.createExplicitListConstraint(new String[]{"X", "Y"}) ;
int lastRow = workbook.getSpreadsheetVersion().getLastRowIndex();
CellRangeAddressList addressList = new CellRangeAddressList(1, lastRow, 1, 1); //B2:B1048576
DataValidation validation = dvHelper.createValidation(dvConstraint, addressList);
sheet.addValidationData(validation); // data validation for B2:B1048576
FileOutputStream out = null;
if (workbook instanceof HSSFWorkbook) {
out = new FileOutputStream("CreateExcelDataValidationListsWholeColumn.xls");
} else if (workbook instanceof XSSFWorkbook) {
out = new FileOutputStream("CreateExcelDataValidationListsWholeColumn.xlsx");
}
workbook.write(out);
workbook.close();
out.close();
}
}
这将导致工作表XML如下:
<worksheet>
<dimension ref="B1"/>
<sheetViews>
<sheetView workbookViewId="0" tabSelected="true"/>
</sheetViews>
<sheetFormatPr defaultRowHeight="15.0"/>
<sheetData>
<row r="1"><c r="B1" t="s"><v>0</v></c></row>
</sheetData>
<dataValidations count="1">
<dataValidation type="list" sqref="B2:B1048576" allowBlank="true" errorStyle="stop">
<formula1>"X,Y"</formula1>
</dataValidation>
</dataValidations>
<pageMargins bottom="0.75" footer="0.3" header="0.3" left="0.7" right="0.7" top="0.75"/>
</worksheet>
使用HSSFWorkbook
所得的CreateExcelDataValidationListsWholeColumn.xls
大小为4 KB。