javaweb project based on poi excel export merged cells

Code:

sheet.addMergedRegion(new CellRangeAddress(firstRow, lastRow, firstCol, lastCol));

CellRangeAddress(int firstRow, int lastRow, int firstCol, int lastCol)

Parameters: start line number, end line number, start column number, end column number

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Origin blog.csdn.net/ampsycho/article/details/77750340