由于填充时第二行开始,easyexcel不会自动合并单元格,所以需要自定义handler根据上一行的合并信息自行合并
public class MyHandler extends AbstractMergeStrategy {
@Override
protected void merge(Sheet sheet, Cell cell, Head head, Integer relativeRowIndex) {
if(relativeRowIndex==null ||relativeRowIndex==0){
return;
}
int rowIndex = cell.getRowIndex();
int colIndex = cell.getColumnIndex();
sheet=cell.getSheet();
Row preRow = sheet.getRow(rowIndex - 1);
Cell preCell = preRow.getCell(colIndex);//获取上一行的该格
List<CellRangeAddress> list = sheet.getMergedRegions();
CellStyle cs = cell.getCellStyle();
cell.setCellStyle(cs);
for (int i = 0; i < list.size(); i++) {
CellRangeAddress cellRangeAddress = list.get(i);
if (cellRangeAddress.containsRow(preCell.getRowIndex()) && cellRangeAddress.containsColumn(preCell.getColumnIndex())) {
int lastColIndex = cellRangeAddress.getLastColumn();
int firstColIndex = cellRangeAddress.getFirstColumn();
CellRangeAddress cra = new CellRangeAddress(cell.getRowIndex(), cell.getRowIndex(), firstColIndex, lastColIndex);
sheet.addMergedRegion(cra);
RegionUtil.setBorderBottom(BorderStyle.THIN, cra, sheet);
RegionUtil.setBorderLeft(BorderStyle.THIN, cra, sheet);
RegionUtil.setBorderRight(BorderStyle.THIN, cra, sheet);
RegionUtil.setBorderTop(BorderStyle.THIN, cra, sheet);
return;
}
}
}
}
调用
ExcelWriter excelWriter = EasyExcel.write(response.getOutputStream()).withTemplate(Objects.requireNonNull(DeviceController.class.getClassLoader().getResourceAsStream("/excel/devmsg.xlsx"))).build();
WriteSheet writeSheet = EasyExcel.writerSheet().build();
WriteSheet writeSheet1 = EasyExcel.writerSheet().registerWriteHandler(new MyHandler()).build();
FillConfig fillConfig = FillConfig.builder().forceNewRow(Boolean.TRUE).build();
excelWriter.fill(bm, writeSheet1);//写入设备基础信息
excelWriter.fill(new FillWrapper("data1", list), fillConfig, writeSheet1);
excelWriter.fill(new FillWrapper("data2", list1), fillConfig, writeSheet1);
excelWriter.fill(new FillWrapper("data3", list2), fillConfig, writeSheet1);
excelWriter.fill(new FillWrapper("data4", list3), fillConfig, writeSheet1);
excelWriter.finish();