poi 实现合并单元格
cell.setCellValue("销售订单");cell.setCellStyle(cellStyle1);PoiExcelUtil.setRegionStyle(sheet,new CellRangeAddress(0, 0, 0, 8), cellStyle1);PoiExcelUtil.mergeCell(sheet, 0, 0, 0, 8); 注意：1、依赖于帮...
