SXSSFWorkbook上的AutosizeColumns [英] AutosizeColumns on SXSSFWorkbook

问题描述

是否可以在流式SXSSFWorkbook上使用autoSizeColumns? 我实现了导出功能，以将对象列表导出为ex​​cel.最初，我使用XSSFWorkbook(而不是流式传输)，并且在创建所有单元格之后，我会自动调整所有列的大小，从而生成一个不错的excel文件.

Is it possible to autoSizeColumns on a streaming SXSSFWorkbook? I implemented an export functionality to export a list of objects to excel. At first I used the XSSFWorkbook (not streaming) and after all the cells were created, I autosized all the columns, resulting in a nice excel file.

出于性能问题，我们希望将工作簿更改为流版本，但这导致在org.apache.poi.ss.util.SheetUtil.getCellWidth处出现NullPointer.

For performance issues we wanted to change the workbook to the streaming version, but this resulted in a NullPointer at org.apache.poi.ss.util.SheetUtil.getCellWidth.

是否可以为SXSSFWorkbook调用autoSizeColumns?

Is it possible to call autoSizeColumns for a SXSSFWorkbook?

我使用的是poi-ooxml 3.9，但在3.8版中我有同样的问题.

Im using poi-ooxml 3.9, but I have the same issue in 3.8.

推荐答案

您需要确保每个单元格都有一个值.

You need to make sure every cell has a value.

我们使用以下代码为单元格设置字符串值:

We use the following code to set a string value to a cell:

Cell c = row.createCell(i);
c.setCellValue(text == null ? "" : text );

**单元格永远不能为null值，否则它将引发NullPointerException.因此，请按上面所示设置该值.

** Cell should never be null values else it throws NullPointerException. Hence set the value as shown above.

非常感谢，这很有帮助！

Thanks a lot, this helped!!

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