9

我正在尝试将列表数据写入一本工作簿中的多个 excel 表中。与第一个列表一样，代码将创建新工作簿并为列表 [1] 创建新工作表，对于第二个列表，它将在现有工作簿中创建新工作表，依此类推。所以我写了下面的代码。但它不起作用，我只能看到列表 [1] 的第一张表。有人可以帮我提供任何替代解决方案吗？

我写的下面的代码

    ArrayList<List<String>> tempresultdata=this.getSummaryList();
    HSSFWorkbook workbook = new HSSFWorkbook();
    String fileName="Path\\To\\XLS";
    File file = new File(fileName);
    FileOutputStream out;           
    if(!file.exists()) // This will create new workbook with new sheet if it doesnt exists{

                HSSFSheet mySheet = workbook.createSheet(sheetname);
                writeExcel(mySheet,tempresultdata);
    } else // This add new sheet to above created workbook {
            try {
                HSSFWorkbook myWorkBook = (HSSFWorkbook) WorkbookFactory.create(file);
                workbook=myWorkBook;
                HSSFSheet mySheet = (HSSFSheet) workbook.createSheet(sheetname);
                writeExcel(mySheet,tempresultdata);                 
            } catch (InvalidFormatException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
    }   
    try{
        out = new FileOutputStream(fileName,true);
        workbook.write(out);
        out.close();
        }catch(Exception e){ 
            e.printStackTrace();
        }

谢谢，普里扬克·沙阿

4

5 回答 5

11

如果文件不存在，则此代码创建新文件并创建示例 sheet1，但如果文件存在，则它将新工作表添加到现有的 excel 文件中。

    HSSFWorkbook workbook = null;
    File file = new File(context.getExternalFilesDir(null), "Sample.xls");
    FileOutputStream fileOut = new FileOutputStream(file);

    if (file.exists()) {
        try {
            workbook = (HSSFWorkbook)WorkbookFactory.create(file);
        } catch (InvalidFormatException e) {
            e.printStackTrace();
        }
        HSSFSheet sheet = workbook.createSheet("Sample sheet2");
    }
    else{
        workbook = new HSSFWorkbook();
        HSSFSheet sheet = workbook.createSheet("Sample sheet1");
    }
    workbook.write(fileOut);
    fileOut.close();
于 2013-02-28T23:58:09.223 回答
2

看起来你只是写出sheet不是workbook

于 2012-09-17T12:58:14.380 回答
2

在使用现有工作簿时，您不应该创建文件对象，只需向FileInputStream对象提供文件位置并将其引用传递给工作簿对象，然后对现有文件执行任何您想做的事情。要添加工作表，只需使用 create Method 命令

public void AddsheetintoExistingworkbook(String sheetname) throws IOException, InvalidFormatException{

    //***************************Add a sheet into Existing workbook***********************************************


 String path="C:\\Workspace\\Selenium_2.53\\src\\InputFiles\\Temp.xlsx";
 fileinp = new FileInputStream(path);
 workbook = new XSSFWorkbook(fileinp);
 workbook.createSheet(sheetname);

 fileOut = new FileOutputStream(path);
    workbook.write(fileOut);
    fileOut.close();
 System.out.println("File is written successfully");    
}
于 2017-01-11T18:22:46.040 回答
1

您可以使用 Bhaskar 的代码来解决问题并使用 WorkbookFactory，您可能需要下载 poi-ooxml-3.7.jar 文件。

这是给你的链接：

http://grepcode.com/snapshot/repo1.maven.org/maven2/org.apache.poi/poi-ooxml/3.7

于 2014-02-23T07:42:13.740 回答
1

要将多个 Excel 工作表添加到新的 Excel 文件中，需要从一个工作簿创建这些工作表，并将一次写入文件输出流

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

public class JustATest {
   public static void main(String[] args) throws Exception  {       

        XSSFWorkbook AWorkbook = new XSSFWorkbook(); //Create blank workbook 

        for (int i = 0; i < 10; i++) {
            XSSFSheet spreadsheet = AWorkbook.createSheet(" Employee "+i);

            // the follwing code is to create dummy data in sheets 
            // is similar to the one at tutorialPoint.com
            XSSFRow row;            
            //This data needs to be written (Object[])
            Map < String, Object[] > empinfo =    new TreeMap< String, Object[] >();
            empinfo.put( "1", new Object[] { "EMP ID", "EMP NAME", "DESIGNATION" });
            for (int j = 0; j < i; j++) {
                empinfo.put( j+2+"", new Object[] {  j+2+"", "Fadel K", "Technical Manager" });                
            }          
            //Iterate over data and write to sheet
            Set<String> keyid = empinfo.keySet();
            int rowid = 0;
            for (String key : keyid){
               row = spreadsheet.createRow(rowid++);
               Object [] objectArr = empinfo.get(key);
               int cellid = 0;
               for (Object obj : objectArr){
                  Cell cell = row.createCell(cellid++);
                  cell.setCellValue((String)obj);
               }
            }            
            // dummy data creation over.
        }       

        // here you write all sheets at once, by writing the entier workbook
        FileOutputStream out = new FileOutputStream(new File("AllData.xlsx"));
        AWorkbook.write(out);
        out.close();               
   }
}
于 2016-02-29T09:27:30.757 回答