如何使用java將xlsx文件轉換爲csv？

Question

當前我正在使用下面的代碼將Xlsx文件轉換爲csv使用java.Its需要更多時間，因爲下面的代碼使用迭代器來執行此過程。但我需要任何其他更好的解決方案轉換XLSX使用到csv java.Please幫我

public class Test1{ 
      static void convert(File inputFile, File outputFile) { 

     try { 
      FileOutputStream fos = new FileOutputStream(outputFile); 
      // Get the workbook object for XLSX file 
      XSSFWorkbook wBook = new XSSFWorkbook(
        new FileInputStream(inputFile)); 
      // Get first sheet from the workbook 
      XSSFSheet sheet = wBook.getSheetAt(0); 
      Row row; 
      Cell cell; 
      // Iterate through each rows from first sheet 
      Iterator<Row> rowIterator = sheet.iterator(); 

      while (rowIterator.hasNext()) { 
       row = rowIterator.next(); 

       // For each row, iterate through each columns 
       Iterator<Cell> cellIterator = row.cellIterator(); 
       while (cellIterator.hasNext()) { 

        cell = cellIterator.next(); 

        switch (cell.getCellType()) { 
        case Cell.CELL_TYPE_BOOLEAN: 
         data.append(cell.getBooleanCellValue() + ","); 

         break; 
        case Cell.CELL_TYPE_NUMERIC: 
         data.append(cell.getNumericCellValue() + ","); 

         break; 
        case Cell.CELL_TYPE_STRING: 
         data.append(cell.getStringCellValue() + ","); 
         break; 

        case Cell.CELL_TYPE_BLANK: 
         data.append("" + ","); 
         break; 
        default: 
         data.append(cell + ","); 

        } 
       } 
      } 

      fos.write(data.toString().getBytes()); 
      fos.close(); 

     } catch (Exception ioe) { 
      ioe.printStackTrace(); 
     } 
    } 

    // testing the application 

    public static void main(String[] args) { 
     // reading file from desktop 
     File inputFile = new File("D:\\Test.xlsx"); 
     // writing excel data to csv 
     File outputFile = new File("D:\\Test1.csv"); 
     convert(inputFile, outputFile); 
    } 
} 

感謝&問候， Tharanya乙

Answer 1

嘗試使用POI API。這裏是參考鏈接

Java - Apache POI - Convert XLS/XLSX to CSV