用jxl写excle的问题

Question

import java.io.*;
import jxl.*;
import jxl.write.*;public class CreateXLS {
    public static void main(String args[]) {
        try {
            //打开文件
            WritableWorkbook book = Workbook.createWorkbook(new File(
                    "commodity.xls"));
            //生成名为"商品信息"的工作表，参数0表示这是第一页
            WritableSheet sheet = book.createSheet("商品信息", 0);            sheet.addCell(new jxl.write.Label(0, 5, "商品ID"));
            sheet.addCell(new jxl.write.Label(1, 5, "供货商ID"));
            sheet.addCell(new jxl.write.Label(2, 5, "品牌"));
            sheet.addCell(new jxl.write.Label(3, 5, "机型"));
            sheet.addCell(new jxl.write.Label(4, 5, "终端类型"));
            sheet.addCell(new jxl.write.Label(5, 5, "配置"));
            
            sheet.addCell(new jxl.write.Label(0, 6, "888"));
            sheet.addCell(new jxl.write.Label(1, 6, "666"));
            sheet.addCell(new jxl.write.Label(2, 6, "三星"));
            sheet.addCell(new jxl.write.Label(3, 6, "A108"));
            sheet.addCell(new jxl.write.Label(4, 6, "CDMA"));
            sheet.addCell(new jxl.write.Label(5, 6, "双电双充"));
            
            sheet.addCell(new jxl.write.Label(0, 7, "999"));
            sheet.addCell(new jxl.write.Label(1, 7, "666"));
            sheet.addCell(new jxl.write.Label(2, 7, "摩托罗拉"));
            sheet.addCell(new jxl.write.Label(3, 7, "V888"));
            sheet.addCell(new jxl.write.Label(4, 7, "GSM"));
            sheet.addCell(new jxl.write.Label(5, 7, "双电双充"));
            //写入数据并关闭文件
            book.write();
            book.close();        } catch (Exception e) {
            System.out.println(e);
        }
    }
}要关闭输入文件

Answer 1

问题的原来是没有关闭输入文件呀