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!798 fix 修复 excel 导出多 sheet 合并单元格失效问题

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* fix 修复 excel 导出多 sheet 合并单元格失效问题
This commit is contained in:
马铃薯头
2025-12-10 09:22:14 +00:00
committed by 疯狂的狮子Li
parent 279488e7ed
commit 39b19ac361
2 changed files with 15 additions and 13 deletions
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4
ruoyi-common/ruoyi-common-excel/src/main/java/org/dromara/common/excel/core/CellMergeHandler.java
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@@ -147,12 +147,12 @@ public class CellMergeHandler {
private boolean isMerge(Object currentRow, Object preRow, CellMerge cellMerge) { private boolean isMerge(Object currentRow, Object preRow, CellMerge cellMerge) {
final String[] mergeBy = cellMerge.mergeBy(); final String[] mergeBy = cellMerge.mergeBy();
if (StrUtil.isAllNotBlank(mergeBy)) { if (StrUtil.isAllNotBlank(mergeBy)) {
//比对当前行和上一行的各个属性值一一比对 如果全为真 则为真 // 比对当前行和上一行的各个属性值一一比对 如果全为真 则为真
for (String fieldName : mergeBy) { for (String fieldName : mergeBy) {
final Object valCurrent = ReflectUtil.getFieldValue(currentRow, fieldName); final Object valCurrent = ReflectUtil.getFieldValue(currentRow, fieldName);
final Object valPre = ReflectUtil.getFieldValue(preRow, fieldName); final Object valPre = ReflectUtil.getFieldValue(preRow, fieldName);
if (!Objects.equals(valPre, valCurrent)) { if (!Objects.equals(valPre, valCurrent)) {
//依赖字段如有任一不等值,则标记为不可合并 // 依赖字段如有任一不等值,则标记为不可合并
return false; return false;
} }
} }

24
ruoyi-common/ruoyi-common-excel/src/main/java/org/dromara/common/excel/core/CellMergeStrategy.java
View File

@@ -2,15 +2,16 @@ package org.dromara.common.excel.core;
import cn.hutool.core.collection.CollUtil; import cn.hutool.core.collection.CollUtil;
import cn.idev.excel.metadata.Head; import cn.idev.excel.metadata.Head;
import cn.idev.excel.write.handler.WorkbookWriteHandler; import cn.idev.excel.write.handler.SheetWriteHandler;
import cn.idev.excel.write.handler.context.WorkbookWriteHandlerContext;
import cn.idev.excel.write.merge.AbstractMergeStrategy; import cn.idev.excel.write.merge.AbstractMergeStrategy;
import cn.idev.excel.write.metadata.holder.WriteSheetHolder;
import cn.idev.excel.write.metadata.holder.WriteWorkbookHolder;
import lombok.extern.slf4j.Slf4j; import lombok.extern.slf4j.Slf4j;
import org.apache.poi.ss.usermodel.Cell; import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Sheet; import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.util.CellRangeAddress; import org.apache.poi.ss.util.CellRangeAddress;
import java.util.*; import java.util.List;
/** /**
* 列值重复合并策略 * 列值重复合并策略
@@ -18,7 +19,7 @@ import java.util.*;
* @author Lion Li * @author Lion Li
*/ */
@Slf4j @Slf4j
public class CellMergeStrategy extends AbstractMergeStrategy implements WorkbookWriteHandler { public class CellMergeStrategy extends AbstractMergeStrategy implements SheetWriteHandler {
private final List<CellRangeAddress> cellList; private final List<CellRangeAddress> cellList;
@@ -32,27 +33,28 @@ public class CellMergeStrategy extends AbstractMergeStrategy implements Workbook
@Override @Override
protected void merge(Sheet sheet, Cell cell, Head head, Integer relativeRowIndex) { protected void merge(Sheet sheet, Cell cell, Head head, Integer relativeRowIndex) {
if (CollUtil.isEmpty(cellList)){ if (CollUtil.isEmpty(cellList)) {
return; return;
} }
//单元格写入了,遍历合并区域,如果该Cell在区域内,但非首行,则清空 // 单元格写入了,遍历合并区域,如果该Cell在区域内,但非首行,则清空
final int rowIndex = cell.getRowIndex(); final int rowIndex = cell.getRowIndex();
for (CellRangeAddress cellAddresses : cellList) { for (CellRangeAddress cellAddresses : cellList) {
final int firstRow = cellAddresses.getFirstRow(); final int firstRow = cellAddresses.getFirstRow();
if (cellAddresses.isInRange(cell) && rowIndex != firstRow){ if (cellAddresses.isInRange(cell) && rowIndex != firstRow) {
cell.setBlank(); cell.setBlank();
} }
} }
} }
@Override @Override
public void afterWorkbookDispose(final WorkbookWriteHandlerContext context) { public void afterSheetCreate(final WriteWorkbookHolder writeWorkbookHolder, final WriteSheetHolder writeSheetHolder) {
if (CollUtil.isEmpty(cellList)){ if (CollUtil.isEmpty(cellList)) {
return; return;
} }
//当前表格写完后，统一写入 // 在 Sheet 创建时提前写入合并区域；后续写入只会影响首格，不会移除合并
final Sheet sheet = writeSheetHolder.getSheet();
for (CellRangeAddress item : cellList) { for (CellRangeAddress item : cellList) {
context.getWriteContext().writeSheetHolder().getSheet().addMergedRegion(item); sheet.addMergedRegion(item);
} }
} }