XSSF (POI) - 将“公式”列添加到数据透视表

我正在使用 POI 3.12-beta1：

<!-- Apache POI (for Excel) -->
<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi</artifactId>
    <version>3.12-beta1</version>
</dependency>

<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi-ooxml</artifactId>
    <version>3.12-beta1</version>
</dependency>

<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>ooxml-schemas</artifactId>
    <version>1.1</version>
</dependency>

我正在尝试创建一个计算数据透视表列，其定义为：= 'Ended' / 'Generated' * 100.

我继续在 Excel 中手动编辑工作表以使其正常工作，当我反转*.xlsx将文件放入 ZIP 目录并查看它，我在中找到了以下代码\xl\pivotCache\pivotCacheDefinition1.xml:

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<pivotCacheDefinition xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main" xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships" r:id="rId1" refreshOnLoad="1" refreshedBy="vyasrav" refreshedDate="42110.580247453705" createdVersion="3" refreshedVersion="3" minRefreshableVersion="3" recordCount="352">
    <cacheSource type="worksheet">
        <worksheetSource ref="A1:O353" sheet="Data"/>
    </cacheSource>
    <cacheFields count="16">
        <!-- OMITTED -->
        <cacheField name="Avg Pct Processed" numFmtId="0" formula="'Ended' / 'Generated' * 100" databaseField="0"/>
    </cacheFields>
</pivotCacheDefinition>

因此，我回到我的 java 程序并添加以下代码来自动生成它，但它没有注册数据列“15”，并且我收到 IndexOutOfBounds 错误。

// Add pivot (pivot table):
Sheet pivotSheet = workbook.createSheet("Pivot");
LOGGER.trace("Created sheet: '" + String.valueOf(pivotSheet) + "'.");

XSSFPivotTable pivotTable = ((XSSFSheet)pivotSheet).createPivotTable(new AreaReference(tableRange), new CellReference("A1"), dataSheet);
CTPivotTableDefinition ctPivotTableDefinition = pivotTable.getCTPivotTableDefinition();
CTPivotTableStyle ctPivotTableStyle = ctPivotTableDefinition.getPivotTableStyleInfo();
ctPivotTableStyle.setName("PivotStyleMedium4");

// Row Labels:
pivotTable.addRowLabel(...); // ...
...

// Add column 15 (this is a calculated column):
CTCacheFields ctCacheFields = pivotTable.getPivotCacheDefinition().getCTPivotCacheDefinition().getCacheFields();
CTCacheField ctCacheField = ctCacheFields.addNewCacheField();
ctCacheField.setName("Avg Pct Processed");
ctCacheField.setFormula("'Ended' / 'Generated' * 100");

// Column Labels:
pivotTable.addColumnLabel(DataConsolidateFunction.SUM, 8, "Sum of Generated");
pivotTable.addColumnLabel(DataConsolidateFunction.SUM, 12, "Sum of Ended");
pivotTable.addColumnLabel(DataConsolidateFunction.SUM, 13, "Sum of Unended");
pivotTable.addColumnLabel(DataConsolidateFunction.SUM, 15, "Average of Processed Percent");
...

上面粗体行上发生的 IndexOutOfBoundsException 的 StackTrace 是：

Exception in thread "main" java.lang.IndexOutOfBoundsException
    at org.openxmlformats.schemas.spreadsheetml.x2006.main.impl.CTPivotFieldsImpl.setPivotFieldArray(Unknown Source)
    at org.apache.poi.xssf.usermodel.XSSFPivotTable.addDataColumn(XSSFPivotTable.java:372)
    at org.apache.poi.xssf.usermodel.XSSFPivotTable.addColumnLabel(XSSFPivotTable.java:296)
    at com...  

有谁知道如何使用 POI 生成此列？

EDIT:

我尝试同时使用：

CTPivotTableDefinition ctPivotTableDefinition = pivotTable.getCTPivotTableDefinition();

and

CTCacheField ctCacheField = ctCacheFields.insertNewCacheField(15);

在任何一种情况下，当执行此行时我都会遇到相同的异常：

pivotTable.addColumnLabel(DataConsolidateFunction.SUM, 15, "Average of Processed Percent");

请注意，我确实尝试注释掉添加新列标签的行，当我这样做时，如果我在 Excel 2010 中打开工作簿，则会在启动时收到以下错误消息：

Removed Feature: PivotTable report from /xl/pivotTables/pivotTable1.xml part (PivotTable view)
Removed Records: Workbook properties from /xl/workbook.xml part (Workbook)  

Thanks!

我通过以下方式解决了你的问题：

//... get or create pivotTable

//Use first column as row label
    pivotTable.addRowLabel(0);
// 1. Add Formula to cache
    addFormulaToCache(pivotTable);
// 2. Add PivotField for Formula column
    addPivotFieldForNewColumn(pivotTable);
// 3. Add all column labels before our function..
    pivotTable.addColumnLabel(DataConsolidateFunction.SUM, 1);
    //Set the third column as filter
    pivotTable.addColumnLabel(DataConsolidateFunction.AVERAGE, 2);
// 4. Add formula column
    addFormulaColumn(pivotTable);

下面是方法的实现：

private static void addFormulaToCache(XSSFPivotTable pivotTable) {
    CTCacheFields ctCacheFields = pivotTable.getPivotCacheDefinition().getCTPivotCacheDefinition().getCacheFields();
    CTCacheField ctCacheField = ctCacheFields.addNewCacheField();
    ctCacheField.setName("Field1"); // Any field name
    ctCacheField.setFormula("'Ended' / 'Generated' * 100");
    ctCacheField.setDatabaseField(false);
    ctCacheField.setNumFmtId(0);
    ctCacheFields.setCount(ctCacheFields.sizeOfCacheFieldArray()); //!!! update count of fields directly
}

private static void addPivotFieldForNewColumn(XSSFPivotTable pivotTable) {
    CTPivotField pivotField = pivotTable.getCTPivotTableDefinition().getPivotFields().addNewPivotField();
    pivotField.setDataField(true);
    pivotField.setDragToCol(false);
    pivotField.setDragToPage(false);
    pivotField.setDragToRow(false);
    pivotField.setShowAll(false);
    pivotField.setDefaultSubtotal(false);
}

private static void addFormulaColumn(XSSFPivotTable pivotTable) {
    CTDataFields dataFields;
    if(pivotTable.getCTPivotTableDefinition().getDataFields() != null) {
        dataFields = pivotTable.getCTPivotTableDefinition().getDataFields();
    } else {
        // can be null if we have not added any column labels yet
        dataFields = pivotTable.getCTPivotTableDefinition().addNewDataFields();
    }
    CTDataField dataField = dataFields.addNewDataField();
    dataField.setName("Avg Pct Processed");
    // set index of cached field with formula - it is the last one!!!
    dataField.setFld(pivotTable.getPivotCacheDefinition().getCTPivotCacheDefinition().getCacheFields().getCount()-1);
    dataField.setBaseItem(0);
    dataField.setBaseField(0);
}