写入EXCEL的问题
我使用JXL向EXCEL模板中写入一些单元格的内容,代码如下:
Workbook wb = Workbook.getWorkbook(new File(strFileName));
ByteArrayOutputStream targetFile = new ByteArrayOutputStream();
WritableWorkbook wwb = Workbook.createWorkbook(targetFile, wb);
WritableSheet wws = wwb.getSheet(0);
for (int r=3;r<=26;r++)
{
for (int c=4;c<=7;c++)
{
WritableCell wc1 = wws.getWritableCell(c,r);
Label sex = (Label)wc1;
sex.setString("a");
}
}
但总是报NULL错误,请问这个写法那里不对么?谢谢!