如何在数据透视表中使用apache poi添加多列作为列标签

Question

我正在创建数据透视表，之前我已经将其中一行值作为列工作正常，但现在当我添加了一个更多列标签在数据透视表，它变得除去

像

Ø需要我的代码给O/p/p

这里是我的代码

  public class ApacheCreatePivotTable 
    { 
     public static void main(String[] args) throws Exception 
     { 
      XSSFWorkbook wb = new XSSFWorkbook(); 
      XSSFSheet sheet = wb.createSheet(); 
      //Create some data to build the pivot table on 
      setCellData(sheet); 
      int endclonum = wb.getSheetAt(0).getRow(0).getLastCellNum()-1; 
      int endrownum = wb.getSheetAt(0).getLastRowNum(); 
      AreaReference source = new AreaReference(new CellReference(0,0),new CellReference(endrownum,endclonum)); 
      XSSFSheet sheet2 = wb.createSheet("pivot"); 
      CellReference position = new CellReference("A1"); //convertColStringToIndex 
      XSSFPivotTable pivotTable = sheet2.createPivotTable(source, position, sheet); 
      pivotTable.addRowLabel(0); 
      pivotTable.addRowLabel(1); 
      pivotTable.getCTPivotTableDefinition().getPivotFields().getPivotFieldArray(0).setDefaultSubtotal(false); 

      pivotTable.addColumnLabel(DataConsolidateFunction.AVERAGE, 3); 
      pivotTable.addColumnLabel(DataConsolidateFunction.SUM, 3); 

      pivotTable.getCTPivotTableDefinition().getPivotFields().getPivotFieldArray(2).setAxis(
        org.openxmlformats.schemas.spreadsheetml.x2006.main.STAxis.AXIS_COL); 

      pivotTable.getCTPivotTableDefinition().getPivotFields().getPivotFieldArray(2).addNewItems(); 
      pivotTable.getCTPivotTableDefinition().getPivotFields().getPivotFieldArray(2).getItems().addNewItem().setT(
        org.openxmlformats.schemas.spreadsheetml.x2006.main.STItemType.DEFAULT); 
      FileOutputStream fileOut = new FileOutputStream("output.xlsx"); 
      wb.write(fileOut); 
      fileOut.close(); 
      wb.close(); 
     } 

     public static void setCellData(XSSFSheet sheet) 
     { 
      SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); 
      Row row1 = sheet.createRow(0); 
      // Create a cell and put a value in it. 
      Cell cell11 = row1.createCell(0); 
      cell11.setCellValue("Names"); 
      Cell cell12 = row1.createCell(1); 
      cell12.setCellValue("falility"); 
      Cell cell13 = row1.createCell(2); 
      cell13.setCellValue("date"); 
      Cell cell14 = row1.createCell(3); 
      cell14.setCellValue("cost"); 
      Cell cell15 = row1.createCell(4); 
      cell15.setCellValue("growth"); 


      Row row2 = sheet.createRow(1); 
      Cell cell21 = row2.createCell(0); 
      cell21.setCellValue("tom"); 
      Cell cell22 = row2.createCell(1); 
      cell22.setCellValue("Nal stop"); 
      Cell cell23 = row2.createCell(2); 
      Calendar cal = Calendar.getInstance(); 
      cal.set(2017,07,18); 
      cell23.setCellValue(sdf.format(cal.getTime())); 
      Cell cell24 = row2.createCell(3); 
      cell24.setCellValue(10); 
      Cell cell25 = row2.createCell(4); 
      cell25.setCellValue(.18); 


      Row row3 = sheet.createRow(2); 
      Cell cell31 = row3.createCell(0); 
      cell31.setCellValue("Ram"); 
      Cell cell32 = row3.createCell(1); 
      cell32.setCellValue("Vadgao"); 
      Cell cell33 = row3.createCell(2); 
      cal.set(2017,07,19); 
      cell33.setCellValue(sdf.format(cal.getTime())); 
      Cell cell34 = row3.createCell(3); 
      cell34.setCellValue(12); 
      Cell cell35 = row3.createCell(4); 
      cell35.setCellValue(.12); 

      Row row4 = sheet.createRow(3); 
      Cell cell41 = row4.createCell(0); 
      cell41.setCellValue("Terk"); 
      Cell cell42 = row4.createCell(1); 
      cell42.setCellValue("Deccan"); 
      Cell cell43 = row4.createCell(2); 
      cal.set(2017,07,20); 
      cell43.setCellValue(sdf.format(cal.getTime())); 
      Cell cell44 = row4.createCell(3); 
      cell44.setCellValue(11); 
      Cell cell45 = row4.createCell(4); 
      cell45.setCellValue(.35); 

      Row row5 = sheet.createRow(4); 
      Cell cell51 = row5.createCell(0); 
      cell51.setCellValue("tom"); 
      Cell cell52 = row5.createCell(1); 
      cell52.setCellValue("baner"); 
      Cell cell53 = row5.createCell(2); 
      cal.set(2017,07,18); 
      cell53.setCellValue(sdf.format(cal.getTime())); 
      Cell cell54 = row5.createCell(3); 
      cell54.setCellValue(20); 
      Cell cell55 = row5.createCell(4); 
      cell55.setCellValue(.50); 
     } 
} 

请帮助我，

Answer 1

的问题为Microsoft Excel不会创建适当的文件提供的代码。 Excel不会打开该文件，而是会抛出关于错误内容的错误，并提供修复文件的选项。只有在这些修复后，它才会显示数据透视表。

Openoffice和Libreoffice对此更宽容。因此，如果仅仅需要的是建立一个适当的文件Openoffice和Libreoffice，则仅增加了以下的问题提供的代码是必要的（我的添加不会缩进）：

... 
      pivotTable.getCTPivotTableDefinition().getPivotFields().getPivotFieldArray(2).setAxis(
        org.openxmlformats.schemas.spreadsheetml.x2006.main.STAxis.AXIS_COL); 

      pivotTable.getCTPivotTableDefinition().getPivotFields().getPivotFieldArray(2).addNewItems(); 
      pivotTable.getCTPivotTableDefinition().getPivotFields().getPivotFieldArray(2).getItems().addNewItem().setT(
        org.openxmlformats.schemas.spreadsheetml.x2006.main.STItemType.DEFAULT); 

//new ColField needs to be inserted at position 0 
pivotTable.getCTPivotTableDefinition().getColFields().insertNewField(0).setX(2); 
pivotTable.getCTPivotTableDefinition().getColFields().setCount(2); 
... 

但*.xlsx不是默认文件格式为Openoffice和Libreoffice，但为Microsoft Excel。所以*.xlsx应该是Microsoft Excel的正确文件。

为了支持Microsoft Excel，需要一个正确的pivot缓存定义。而对于这个正确的透视字段项是在第一次必要的（我的添加不会缩进）：

import java.io.*; 

import org.apache.poi.ss.*; 
import org.apache.poi.ss.usermodel.*; 
import org.apache.poi.ss.util.*; 
import org.apache.poi.xssf.usermodel.*; 

import java.util.Calendar; 
import java.text.SimpleDateFormat; 

    public class ApacheCreatePivotTable2 
    { 
     public static void main(String[] args) throws Exception 
     { 
      XSSFWorkbook wb = new XSSFWorkbook(); 
      XSSFSheet sheet = wb.createSheet(); 
      //Create some data to build the pivot table on 
      setCellData(sheet); 
      int endclonum = wb.getSheetAt(0).getRow(0).getLastCellNum()-1; 
      int endrownum = wb.getSheetAt(0).getLastRowNum(); 
      AreaReference source = new AreaReference(new CellReference(0,0),new CellReference(endrownum,endclonum)); 
      XSSFSheet sheet2 = wb.createSheet("pivot"); 
      CellReference position = new CellReference("A1"); //convertColStringToIndex 
      XSSFPivotTable pivotTable = sheet2.createPivotTable(source, position, sheet); 
      pivotTable.addRowLabel(0); 
      pivotTable.addRowLabel(1); 

//set tabular layout instead of tree layout 
pivotTable.getCTPivotTableDefinition().getPivotFields().getPivotFieldArray(0).setOutline(false); 

      pivotTable.getCTPivotTableDefinition().getPivotFields().getPivotFieldArray(0).setDefaultSubtotal(false); 

      pivotTable.addColumnLabel(DataConsolidateFunction.AVERAGE, 3); 
      pivotTable.addColumnLabel(DataConsolidateFunction.SUM, 3); 

      pivotTable.getCTPivotTableDefinition().getPivotFields().getPivotFieldArray(2).setAxis(
        org.openxmlformats.schemas.spreadsheetml.x2006.main.STAxis.AXIS_COL); 

      pivotTable.getCTPivotTableDefinition().getPivotFields().getPivotFieldArray(2).addNewItems(); 
      pivotTable.getCTPivotTableDefinition().getPivotFields().getPivotFieldArray(2).getItems().addNewItem().setT(
        org.openxmlformats.schemas.spreadsheetml.x2006.main.STItemType.DEFAULT); 

//new ColField needs to be inserted at position 0 
pivotTable.getCTPivotTableDefinition().getColFields().insertNewField(0).setX(2); 
pivotTable.getCTPivotTableDefinition().getColFields().setCount(2); 


//next code is necessary to create a proper file for Microsoft Excel 

for (int i = 0; i < 3; i++) { 
//take the first 3 items as numbered items: <item x="0"/><item x="1"/> 
pivotTable.getCTPivotTableDefinition().getPivotFields().getPivotFieldArray(0).getItems().getItemArray(i).unsetT(); 
pivotTable.getCTPivotTableDefinition().getPivotFields().getPivotFieldArray(0).getItems().getItemArray(i).setX((long)i); 
} 

for (int i = 4; i > 2; i--) { 
//remove further items 
pivotTable.getCTPivotTableDefinition().getPivotFields().getPivotFieldArray(0).getItems().removeItem(i); 
} 

//set new items count 
pivotTable.getCTPivotTableDefinition().getPivotFields().getPivotFieldArray(0).getItems().setCount(3); 

//build a cache definition which has shared elements for those items 
//<sharedItems><s v="tom"/><s v="Ram"/><s v="Terk"/></sharedItems> 
pivotTable.getPivotCacheDefinition().getCTPivotCacheDefinition().getCacheFields().getCacheFieldList().get(0).getSharedItems().addNewS().setV("tom"); 
pivotTable.getPivotCacheDefinition().getCTPivotCacheDefinition().getCacheFields().getCacheFieldList().get(0).getSharedItems().addNewS().setV("Ram"); 
pivotTable.getPivotCacheDefinition().getCTPivotCacheDefinition().getCacheFields().getCacheFieldList().get(0).getSharedItems().addNewS().setV("Terk"); 

      FileOutputStream fileOut = new FileOutputStream("output.xlsx"); 
      wb.write(fileOut); 
      fileOut.close(); 
      wb.close(); 
     } 

     public static void setCellData(XSSFSheet sheet) 
     { 
      SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); 
      Row row1 = sheet.createRow(0); 
      // Create a cell and put a value in it. 
      Cell cell11 = row1.createCell(0); 
      cell11.setCellValue("Names"); 
      Cell cell12 = row1.createCell(1); 
      cell12.setCellValue("falility"); 
      Cell cell13 = row1.createCell(2); 
      cell13.setCellValue("date"); 
      Cell cell14 = row1.createCell(3); 
      cell14.setCellValue("cost"); 
      Cell cell15 = row1.createCell(4); 
      cell15.setCellValue("growth"); 


      Row row2 = sheet.createRow(1); 
      Cell cell21 = row2.createCell(0); 
      cell21.setCellValue("tom"); 
      Cell cell22 = row2.createCell(1); 
      cell22.setCellValue("Nal stop"); 
      Cell cell23 = row2.createCell(2); 
      Calendar cal = Calendar.getInstance(); 
      cal.set(2017,07,18); 
      cell23.setCellValue(sdf.format(cal.getTime())); 
      Cell cell24 = row2.createCell(3); 
      cell24.setCellValue(10); 
      Cell cell25 = row2.createCell(4); 
      cell25.setCellValue(.18); 


      Row row3 = sheet.createRow(2); 
      Cell cell31 = row3.createCell(0); 
      cell31.setCellValue("Ram"); 
      Cell cell32 = row3.createCell(1); 
      cell32.setCellValue("Vadgao"); 
      Cell cell33 = row3.createCell(2); 
      cal.set(2017,07,19); 
      cell33.setCellValue(sdf.format(cal.getTime())); 
      Cell cell34 = row3.createCell(3); 
      cell34.setCellValue(12); 
      Cell cell35 = row3.createCell(4); 
      cell35.setCellValue(.12); 

      Row row4 = sheet.createRow(3); 
      Cell cell41 = row4.createCell(0); 
      cell41.setCellValue("Terk"); 
      Cell cell42 = row4.createCell(1); 
      cell42.setCellValue("Deccan"); 
      Cell cell43 = row4.createCell(2); 
      cal.set(2017,07,20); 
      cell43.setCellValue(sdf.format(cal.getTime())); 
      Cell cell44 = row4.createCell(3); 
      cell44.setCellValue(11); 
      Cell cell45 = row4.createCell(4); 
      cell45.setCellValue(.35); 

      Row row5 = sheet.createRow(4); 
      Cell cell51 = row5.createCell(0); 
      cell51.setCellValue("tom"); 
      Cell cell52 = row5.createCell(1); 
      cell52.setCellValue("baner"); 
      Cell cell53 = row5.createCell(2); 
      cal.set(2017,07,18); 
      cell53.setCellValue(sdf.format(cal.getTime())); 
      Cell cell54 = row5.createCell(3); 
      cell54.setCellValue(20); 
      Cell cell55 = row5.createCell(4); 
      cell55.setCellValue(.50); 
     } 
    } 

当然此代码示例只显示原理。问题是如何从任何数据列中获取所需的不同数据（在本例中为“tom”，“Ram”和“Terk”），这些数据列将被用于数据透视表。这是挑战。