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Java采用easyexcel组件进行excel表格单元格的自动合并

news 2025/10/9 6:12:47

easyexcel

本文主要是对excel文档中的所有sheet页中，将相同列的相同单元格值进行合并（按列合并），使用Java语言结合easyexcel组件实现。

监听器

采用com.alibaba.excel.write.handler.AbstractWorkbookWriteHandler进行操作

maven版本依赖

<dependency><groupId>com.alibaba</groupId><artifactId>easyexcel</artifactId><version>2.2.7</version>
</dependency>

import com.alibaba.excel.write.handler.AbstractWorkbookWriteHandler;
import com.alibaba.excel.write.metadata.holder.WriteWorkbookHolder;
import com.google.common.base.Objects;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.util.CellRangeAddress;/*** 按列进行合并单元格*/
public class ExcelColumnMergeListener extends AbstractWorkbookWriteHandler {@Overridepublic void afterWorkbookDispose(WriteWorkbookHolder writeWorkbookHolder) {int numberOfSheets = writeWorkbookHolder.getWorkbook().getNumberOfSheets();for(int s = 0; s < numberOfSheets; s++) {Sheet sheet = writeWorkbookHolder.getWorkbook().getSheetAt(s);int firstRowNum = sheet.getFirstRowNum();int lastRowNum = sheet.getLastRowNum();Row row = sheet.getRow(firstRowNum);short firstCellNum = row.getFirstCellNum();short lastCellNum = row.getLastCellNum();for(int i = firstCellNum;i < lastCellNum; i++) {String value =  null;int startRow =  firstRowNum;int endRow =  firstRowNum;boolean findSame = false;for (int j = firstRowNum;j <= lastRowNum; j++) {sheet.getRow(j).getCell(i).getCellTypeEnum();String stringCellValue = sheet.getRow(j).getCell(i).getStringCellValue();if(Objects.equal(value, stringCellValue)) {endRow = j;findSame = true;} else {if(findSame) {// 说明之前是找到了相同的，则添加合并sheet.addMergedRegion(new CellRangeAddress(startRow, endRow, i, i));findSame = false;}// 不相等value = stringCellValue;startRow = j;endRow = j;}}if(findSame) {// 说明之前是找到了相同的，则添加合并sheet.addMergedRegion(new CellRangeAddress(startRow, endRow, i, i));}}}}
}

测试

import com.alibaba.excel.EasyExcel;
import com.alibaba.excel.annotation.ExcelProperty;
import lombok.Data;import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;public class EasyExcelMergeTest {public static void main(String[] args) {List<ValvePoint> vps2 = new ArrayList<>();ValvePoint vp21 = new ValvePoint();vp21.setName("PC");vp21.setDay("2025-3-1");vp21.setStatus("DOING");vps2.add(vp21);vps2.add(vp21);ValvePoint vp22 = new ValvePoint();vp22.setName("OTS1");vp22.setDay("2025-4-1");vp22.setStatus("TODO");vps2.add(vp22);ValvePoint vp23 = new ValvePoint();vp23.setName("OTS2");vp23.setDay("2025-4-1");vp23.setStatus("TODO");vps2.add(vp23);ValvePoint vp24 = new ValvePoint();vp24.setName("OTS3");vp24.setDay("2025-6-1");vp24.setStatus("2025-6-1");vps2.add(vp24);EasyExcel.write("D:\\test\\test1.xlsx", ValvePoint.class).sheet("测试").doWrite(vps2);EasyExcel.write("D:\\test\\test1-merge.xlsx", ValvePoint.class).sheet("测试").registerWriteHandler(new ExcelColumnMergeListener()).doWrite(vps2);}@Datapublic static class ValvePoint implements Serializable {@ExcelProperty(value = "名称")private String name;@ExcelProperty(value = "日期")private String day;@ExcelProperty(value = "状态")private String status;}
}