在打开使用Java创build的Excel电子表格时出现input/输出错误
我已经使用NetBeans 7.4实现了以下Java类，以便使用用户提供的数据创buildExcel Spreadsheet：
package registration; import java.io.*; import java.io.BufferedReader; import java.io.IOException; import java.io.FileOutputStream; import java.io.InputStreamReader; import org.apache.poi.hssf.usermodel.HSSFSheet; import org.apache.poi.hssf.usermodel.HSSFWorkbook; import org.apache.poi.hssf.usermodel.HSSFRow; import org.apache.poi.hssf.usermodel.HSSFCell; import java.util.Scanner; // program uses class Scanner /** * * @author user */ public class Registration { /** * @param args the command line arguments */ /** Now a recursive class**/ public static void club(int option, int i, HSSFRow rowhead, HSSFSheet sheet, HSSFWorkbook hwb) { if (option <= 12);{ HSSFRow row = sheet.createRow((short)i); switch (option) { case 1: System.out.println("Ardboe"); row.createCell((short) 0).setCellValue("Ardboe"); break; case 2: System.out.println("Moortown"); row.createCell((short) 0).setCellValue("Moortown"); break; case 3: System.out.println("Ballinderry"); row.createCell((short) 0).setCellValue("Ballinderry"); break; case 4: System.out.println("The Loup"); row.createCell((short) 0).setCellValue("The Loup"); break; case 5: System.out.println("Ballymaguigan"); row.createCell((short) 0).setCellValue("Ballymaguigan"); break; case 6: System.out.println("Brocagh"); row.createCell((short) 0).setCellValue("Brocagh"); break; case 7: System.out.println("Clonoe"); row.createCell((short) 0).setCellValue("Clonoe"); break; case 8: System.out.println("Derrylaughan"); row.createCell((short) 0).setCellValue("Derrylaughan"); break; case 9: System.out.println("Derrytresk"); row.createCell((short) 0).setCellValue("Derrytresk"); break; case 10: System.out.println("Stewartstown"); row.createCell((short) 0).setCellValue("Stewartstown"); break; case 11: System.out.println("Ogra Columcille"); row.createCell((short) 0).setCellValue("Ogra Columcille"); break; case 12: System.out.println("Newbridge"); row.createCell((short) 0).setCellValue("Newbridge"); break; default: break; } } } public static void main(String[] args) throws IOException{ // TODO code application logic here int option; int i = 1; HSSFWorkbook hwb=new HSSFWorkbook(); // create Scanner to obtain input from command window Scanner input = new Scanner( System.in ); String filename="/Users/user/Documents/clubs.xls" ; HSSFSheet sheet = hwb.createSheet("Clubs in Loughshore"); System.out.println("Select Loughshore Club Number. 1-12. 13 for exit."); HSSFRow rowhead= sheet.createRow((short)0); rowhead.createCell((short) 0).setCellValue("Clubs Listed"); FileOutputStream fileOut = new FileOutputStream(filename); option = input.nextInt(); do{ club(option, i, rowhead, sheet, hwb); System.out.println("Select Loughshore Club Number. 1-12. 13 for exit."); option = input.nextInt(); i ++; } while (option <= 12); } } 但是，当我尝试在LibreOffice上打开创build的电子表格时，我总是收到“常规错误：input/输出错误”。
什么似乎是问题？ 我正在使用Mac OS X Mountain Lion。
问题是你没有写入文件什么是你的HSSFWorkbook里面：你刚刚创build了一个名为clubs.xls的空文件（这不是一个真正的xls文件）。
看看我的实现：
public static void main(String[] args) throws IOException { // TODO code application logic here int option; int i = 1; // create Scanner to obtain input from command window Scanner input = new Scanner(System.in); String filename = "/Users/user/Documents/clubs.xls"; HSSFWorkbook hwb = new HSSFWorkbook(); HSSFSheet sheet = hwb.createSheet("Clubs in Loughshore"); System.out.println("Select Loughshore Club Number. 1-12. 13 for exit."); HSSFRow rowhead = sheet.createRow((short) 0); rowhead.createCell((short) 0).setCellValue("Clubs Listed"); option = input.nextInt(); do { club(option, i, rowhead, sheet, hwb); System.out.println("Select Loughshore Club Number. 1-12. 13 for exit."); option = input.nextInt(); i++; } while (option <= 12); input.close(); FileOutputStream out = null; try { out = new FileOutputStream(new File(filename)); hwb.write(out); System.out.println("Excel written successfully.."); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } finally { out.close(); } }
最后，我使用FileOutputStream来使用write方法write你的HSSFWorkbook 。
此外，我注意到你使用了一个不赞成的方法，比如createCell((short) 0) ，algorithm有一个奇怪的行为，至less对我来说，当我插入数字13 。
再见！