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excel插件 优化合并策略 在合适的生命周期完成合并 去除被合并单元格的非首行内容

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songshuang 2024-01-16 17:50:21 +08:00
parent 13e60a6048
commit 76a3663f3a
1 changed files with 17 additions and 8 deletions
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25
ruoyi-common/ruoyi-common-excel/src/main/java/org/dromara/common/excel/core/CellMergeStrategy.java
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@ -3,6 +3,8 @@ package org.dromara.common.excel.core;
import cn.hutool.core.collection.CollUtil; import cn.hutool.core.collection.CollUtil;
import com.alibaba.excel.annotation.ExcelProperty; import com.alibaba.excel.annotation.ExcelProperty;
import com.alibaba.excel.metadata.Head; import com.alibaba.excel.metadata.Head;
import com.alibaba.excel.write.handler.WorkbookWriteHandler;
import com.alibaba.excel.write.handler.context.WorkbookWriteHandlerContext;
import com.alibaba.excel.write.merge.AbstractMergeStrategy; import com.alibaba.excel.write.merge.AbstractMergeStrategy;
import lombok.AllArgsConstructor; import lombok.AllArgsConstructor;
import lombok.Data; import lombok.Data;
@ -26,7 +28,7 @@ import java.util.Map;
* @author Lion Li * @author Lion Li
*/ */
@Slf4j @Slf4j
public class CellMergeStrategy extends AbstractMergeStrategy { public class CellMergeStrategy extends AbstractMergeStrategy implements WorkbookWriteHandler {
private final List<CellRangeAddress> cellList; private final List<CellRangeAddress> cellList;
private final boolean hasTitle; private final boolean hasTitle;
@ -41,17 +43,24 @@ public class CellMergeStrategy extends AbstractMergeStrategy {
@Override @Override
protected void merge(Sheet sheet, Cell cell, Head head, Integer relativeRowIndex) { protected void merge(Sheet sheet, Cell cell, Head head, Integer relativeRowIndex) {
// judge the list is not null //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
if (CollUtil.isNotEmpty(cellList)) { final int rowIndex = cell.getRowIndex();
// the judge is necessary for (CellRangeAddress cellAddresses : cellList) {
if (cell.getRowIndex() == rowIndex && cell.getColumnIndex() == 0) { final int firstRow = cellAddresses.getFirstRow();
for (CellRangeAddress item : cellList) { if (cellAddresses.isInRange(cell) && rowIndex != firstRow){
sheet.addMergedRegion(item); cell.setBlank();
}
} }
} }
} }
@Override
public void afterWorkbookDispose(final WorkbookWriteHandlerContext context) {
//当前表格写完后，统一写入
for (CellRangeAddress item : cellList) {
context.getWriteContext().writeSheetHolder().getSheet().addMergedRegion(item);
}
}
@SneakyThrows @SneakyThrows
private List<CellRangeAddress> handle(List<?> list, boolean hasTitle) { private List<CellRangeAddress> handle(List<?> list, boolean hasTitle) {
List<CellRangeAddress> cellList = new ArrayList<>(); List<CellRangeAddress> cellList = new ArrayList<>();