的Apache POI不生成EXCEL中的Linux

Question

我有一個servlet下載用戶列表，Excel作爲跟隨

response.setContentType("application/vnd.ms-excel"); 
    response.setHeader("Content-disposition", "attachment; filename=filename.xls"); 
    File excelFile = new File(filename); 
    HSSFWorkbook workbook = new HSSFWorkbook(excelFile); 
    // ... 
    // populate workbook with user list from Database here 
    // ... 
    workbook.write(response.getOutputStream()); // Write workbook to response. 
    workbook.close(); 

這個代碼在Windows中工作，沒有任何問題。但是當我嘗試在Ubuntu服務器上部署Tomcat 7時，當我執行（下載excel）時，它會拋出FileNotFoundException異常。 excel文件不是在webapps /（我的應用程序文件夾）中創建的，它在Windows中創建excel文件。 我已經設置了tomcat的webapps，它的子目錄爲777，並將所有者更改爲tomcat7用戶。

的Apache POI的版本是3.10，最後

Answer 1

我在Linux上使用它在我的情況下運行良好，我的桌面應用程序相同的版本。 這裏是我的代碼片段。用於將數據導入Excell。

 FileChooser fileChooser = new FileChooser(); 
     fileChooser.setTitle("Export translated data as XLS"); 
     fileChooser.setTitle("Export XLS File of " + toLang); 
     fileChooser.getExtensionFilters().addAll(
       new ExtensionFilter("XLS Files", "*.xls")); 
     fileChooser.setInitialFileName(Common 
       .replaceWhiteSpaceAndSlash(fromlang) 
       + "_" 
       + Common.replaceWhiteSpaceAndSlash(toLang) + ".xls"); 
     fileChooser.setInitialDirectory(new File(System 
       .getProperty("user.home") + "/Desktop")); 

     File selectedFile = fileChooser.showSaveDialog(null); 

     File file = new File(filename); 
     WorkbookSettings wbSettings = new WorkbookSettings(); 
     wbSettings.setLocale(new Locale("en", "EN")); 
     WritableWorkbook workbook = Workbook.createWorkbook(file, 
       wbSettings); 

     workbook.createSheet("myExcellData", 0); 
     WritableSheet excelSheet = workbook.getSheet(0); 
     WritableFont times10pt = new WritableFont(WritableFont.TIMES, 10); 
     WritableFont groupFont = new WritableFont(
       WritableFont.createFont("Arial"), 
       WritableFont.DEFAULT_POINT_SIZE, WritableFont.BOLD, false, 
       UnderlineStyle.NO_UNDERLINE, Colour.GREEN); 

     WritableFont ledgerFont = new WritableFont(
       WritableFont.createFont("Arial"), 
       WritableFont.DEFAULT_POINT_SIZE, WritableFont.BOLD, false, 
       UnderlineStyle.NO_UNDERLINE, Colour.GRAY_80); 
     this.headFormat = new WritableCellFormat(ledgerFont); 
     this.headFormat.setWrap(true); 
     this.langFormat = new WritableCellFormat(groupFont); 
     this.langFormat.setWrap(true); 
     Label label; 
     Label labelhead; 
     Label labelhead1; 
     Label labelhead2; 
     Label labelhead3; 
     Label label1; 
     Label label2, label3; 
     int i = 1; 

     this.currentRow = 1; 
     for (KalculateParam obj : data) { 
      labelhead = new Label(0, 0, obj.getLang(), this.headFormat); 
      labelhead1 = new Label(0, 1, "KEY", this.headFormat); 
      labelhead2 = new Label(1, 1, "VALUE", this.headFormat); 
      labelhead3 = new Label(2, 1, "PROPERTY", this.headFormat); 
      label = new Label(0, i, obj.getKey(), this.langFormat); 
      label1 = new Label(1, i, obj.getValue(), this.langFormat); 
      label2 = new Label(2, i, obj.getPropertyName(), this.langFormat); 
      // label3 = new Label(3, i, obj.getLang(),this.langFormat); 
      Cell cell=new Cell(); 

      excelSheet.addCell(labelhead); 
      excelSheet.addCell(labelhead1); 
      excelSheet.addCell(labelhead2); 
      excelSheet.addCell(labelhead3); 
      excelSheet.addCell(label); 
      excelSheet.addCell(label1); 
      excelSheet.addCell(label2); 
      // excelSheet.addCell(label3); 
      i++; 
     } 

     workbook.write(); 
     workbook.close(); 

    } catch (Exception e) { 
     Common.showError(e); 
     e.printStackTrace(); 
    } 
    return "fine"; 
} 

private void addData(WritableSheet sheet, int row, String s) 
     throws WriteException, RowsExceededException { 
    Label label; 
    label = new Label(row, row, s, this.headFormat); 
    sheet.addCell(label); 
} 

現在進口的Excell數據

  FileChooser fileChooser = new FileChooser(); 
      fileChooser.setTitle("Import Translated data to XLS"); 
      fileChooser.getExtensionFilters().addAll(
        new ExtensionFilter("XLS Files", "*.xls")); 
      fileChooser.setInitialDirectory(new File(System 
        .getProperty("user.home") + "/Desktop")); 
      File selectedFile = fileChooser.showOpenDialog(null); 


      List<String> dataList = new ArrayList<String>(); 

    try { 

     FileInputStream fis = new FileInputStream(file); 
     HSSFWorkbook wb = new HSSFWorkbook(fis); 
     HSSFSheet sheet = wb.getSheetAt(0); 
     Iterator<Row> rowIterator = sheet.iterator(); 
     while (rowIterator.hasNext()) { 
      Row row = rowIterator.next(); 
      Iterator<Cell> cellIterator = row.cellIterator(); 
      while (cellIterator.hasNext()) { 
       cell = cellIterator.next(); 
       switch (cell.getCellType()) { 
       case Cell.CELL_TYPE_STRING: { 
        dataList.add(cell.getStringCellValue()); 
       } 
        break; 
       } 
      } 
     } 
     return dataList; 
    } catch (FileNotFoundException ee) { 
     ee.printStackTrace(); 
    } catch (IOException ee) { 
     ee.printStackTrace(); 
    } 

我們需要你的代碼，這樣我可以讓你知道你是否missing.I認爲不會有環境的基礎上的任何異常。