Come impostare il nome dell'autore per il file excel usando poi

Question

Sto creando un file excel (.xlsx) usando poi (java). Dopo aver creato il file excel, vedo l'autore del file excel come "POI Apache". C'è un modo per cambiarlo?

Ecco il codice che sto usando per creare il file excel ...

import java.io.FileOutputStream; 

import org.apache.poi.ss.usermodel.Cell; 
import org.apache.poi.ss.usermodel.Row; 
import org.apache.poi.ss.usermodel.Sheet; 
import org.apache.poi.xssf.usermodel.XSSFWorkbook; 

public class CreateExcelFile { 

    public static void main(String[] args) { 
     /** Name of excel file that we are going to create **/ 
     String fileName = "C:\\temp\\testPOIWrite.xlsx"; 
     writeDataToExcelFile(fileName); 
    } 

    /** This method writes data to new excel file **/ 
    private static void writeDataToExcelFile(String fileName) { 

     String[][] excelData = preapreDataToWriteToExcel(); 

     XSSFWorkbook myWorkBook = new XSSFWorkbook(); 
     Sheet mySheet = myWorkBook.createSheet(); 
     Row myRow = null; 
     Cell myCell = null; 

     for (int rowNum = 0; rowNum < excelData[0].length; rowNum++) { 
      myRow = mySheet.createRow(rowNum); 

      for (int cellNum = 0; cellNum < 4; cellNum++) { 
       myCell = myRow.createCell(cellNum); 
       myCell.setCellValue(excelData[rowNum][cellNum]); 
      } 
     } 

     try { 
      FileOutputStream out = new FileOutputStream(fileName); 
      myWorkBook.write(out); 
      out.flush(); 
      out.close(); 
     } catch (Exception e) { 
      e.printStackTrace(); 
     } 

    } 

    /** Prepare some demo data as excel file content **/ 
    public static String[][] preapreDataToWriteToExcel() { 
     String[][] excelData = new String[4][4]; 
     excelData[0][0] = "First Name"; 
     excelData[0][1] = "Last Name"; 
     excelData[0][2] = "Telephone"; 
     excelData[0][3] = "Address"; 

     excelData[1][0] = "Kushal"; 
     excelData[1][1] = "Paudyal"; 
     excelData[1][2] = "000-000-0000"; 
     excelData[1][3] = "IL,USA"; 

     excelData[2][0] = "Randy"; 
     excelData[2][1] = "Ram Robinson"; 
     excelData[2][2] = "111-111-1111"; 
     excelData[2][3] = "TX, USA"; 

     excelData[3][0] = "Phil"; 
     excelData[3][1] = "Collins"; 
     excelData[3][2] = "222-222-2222"; 
     excelData[3][3] = "NY, USA"; 

     return excelData; 

    } 
} 

Answer 1

E 'piuttosto semplice:

HSSF:

SummaryInformation summaryInfo = workbook.getSummaryInformation(); 
summaryInfo.setAuthor(author); 

XSSF:

POIXMLProperties xmlProps = workbook.getProperties();  
POIXMLProperties.CoreProperties coreProps = xmlProps.getCoreProperties(); 
coreProps.setCreator(author); 

Buon divertimento :)

Answer 2

Non è una risposta diretta, ma nel caso in cui qualcuno ha bisogno di fare questo in NPOI (porto NET di POI) qui è il metodo di estensione che mi è venuta ... è fondamentalmente ciò che Olivier suggerito - implementato solo in C#:

/// <summary> 
/// Sets the author of this workbook. 
/// </summary> 
/// <param name="workbook"></param> 
/// <param name="author"></param> 
public static void SetAuthor(this IWorkbook workbook, string author) 
{ 
    if (workbook is NPOI.XSSF.UserModel.XSSFWorkbook) 
    { 
     var xssfWorkbook = workbook as NPOI.XSSF.UserModel.XSSFWorkbook; 
     var xmlProps = xssfWorkbook.GetProperties(); 
     var coreProps = xmlProps.CoreProperties; 
     coreProps.Creator = author; 
     return; 
    } 

    if (workbook is NPOI.HSSF.UserModel.HSSFWorkbook) 
    { 
     var hssfWorkbook = workbook as NPOI.HSSF.UserModel.HSSFWorkbook; 
     var summaryInfo = hssfWorkbook.SummaryInformation; 

     if (summaryInfo != null) 
     { 
      summaryInfo.Author = author; 
      return; 
     } 

     var newDocInfo = NPOI.HPSF.PropertySetFactory.CreateDocumentSummaryInformation(); 

     var newInfo = NPOI.HPSF.PropertySetFactory.CreateSummaryInformation(); 
     newInfo.Author = author; 

     hssfWorkbook.DocumentSummaryInformation = newDocInfo; 
     hssfWorkbook.SummaryInformation = newInfo; 

     return; 
    } 
}