一般情况下,删除行时会面临两种情况:删除行内容但保留行位置、整行删除(删除后下方单元格上移)。对应的删除方法分别是:
void removeRow(Row row)//Remove a row from this sheet. All cells contained in the row are removed as well
public void shiftRows(int startRow,int endRow,int n)//Shifts rows between startRow and endRow n number of rows. If you use a negative number, it will shift rows up. Code ensures that rows don't wrap around.
示例代码:
以下代码是使用removeRow()方法删除行内容但保留行位置。代码从d:\test.xls中的第一个sheet中删除了第一行。需要注意的是,改变是需要在workbook.write之后才生效的。
import org.apache.poi.hssf.usermodel.*;
import java.io.*;
public class testTools{
public static void main(String[] args){
try {
FileInputStream is = new FileInputStream("d://test.xls");
HSSFWorkbook workbook = new HSSFWorkbook(is);
HSSFSheet sheet = workbook.getSheetAt(0);
HSSFRow row = sheet.getRow(0);
sheet.removeRow(row);
FileOutputStream os = new FileOutputStream("d://test.xls");
workbook.write(os);
is.close();
os.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
以下代码是使用shiftRow实现删除整行的效果。同样,也是需要在进行workbook.write后才会生效。
import org.apache.poi.hssf.usermodel.*;
import java.io.*;
public class testTools{
public static void main(String[] args){
try {
FileInputStream is = new FileInputStream("d://test.xls");
HSSFWorkbook workbook = new HSSFWorkbook(is);
HSSFSheet sheet = workbook.getSheetAt(0);
sheet.shiftRows(1, 4, -1);//删除第一行到第四行,然后使下方单元格上移
FileOutputStream os = new FileOutputStream("d://test.xls");
workbook.write(os);
is.close();
os.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
自己写的一个包装好了的删除excel行的方法(利用shiftRows上移来删除行):
public static void removeRow(HSSFSheet sheet, int rowIndex) {
int lastRowNum=sheet.getLastRowNum();
if(rowIndex>=0&&rowIndex<lastRowNum)
sheet.shiftRows(rowIndex+1,lastRowNum,-1);//将行号为rowIndex+1一直到行号为lastRowNum的单元格全部上移一行,以便删除rowIndex行
if(rowIndex==lastRowNum){
HSSFRow removingRow=sheet.getRow(rowIndex);
if(removingRow!=null)
sheet.removeRow(removingRow);
}
}