poi 设置列宽

void	autoSizeColumn(int column, boolean useMergedCells)           Adjusts the column width to fit the contents.

 

void	autoSizeColumn(int column)           Adjusts the column width to fit the contents.

 

 

 //列宽
		sheet.autoSizeColumn(0,true);//第一列是合并列
		for(int i=1;i<=1+years.size()*4;i++){
			sheet.autoSizeColumn(i);
		}
		

 

解释：对于合并列需要用 sheet.autoSizeColumn(0,true)方法，用  sheet.autoSizeColumn(0)无效