如图，Java用poi操作excel，当cell是null的时候，如何让他变成空字符串呢？

Question

直接赋值不行呀

Answer 1

cell = row.createCell(index);
cell.set...

Answer 2

When cell is null, the object does not exist and of course cannot be assigned a value. You must first create the cell and then call the set method of the cell

Answer 3

Is it okay to directly assign string s='';cell.setcellvalue(s);?