你的代码有什么问题是存在一行。
cttable.setTotalsRowCount（numRows）;
删除它，一切都会工作。
如果有疑问，请比较在Excel中手动创建的一些工作表的XML定义和使用Apache POI创建的定义

What's wrong with your code is a presence of a single line. "cttable.setTotalsRowCount(numRows);" Remove it and everything will work. If in doubt, compare the XML definitions of some working table created manually in Excel and the definitions created with Apache POI