日期:2014-05-19  浏览次数:20769 次

在写一个exl的时候内存溢出怎么办,请帮忙看看吧,
Java code


FileOutputStream fos = new FileOutputStream(file);

        // 创建一个Excel文件对象
        HSSFWorkbook wb = new HSSFWorkbook();
        // 在文件对象上建立一个sheet,并命名为cliff
        HSSFSheet s = wb.createSheet();
    
        s.setColumnWidth((short) 0, (short) 6000);
        s.setColumnWidth((short) 1, (short) 6000);
        s.setColumnWidth((short) 2, (short) 6000);
        s.setColumnWidth((short) 3, (short) 6000);
        s.setColumnWidth((short) 4, (short) 6000);
        
        // HSSFSheet s2=wb.createSheet();
        wb.setSheetName(0, "统计菜单");
        s.createRow(0).createCell((short) 0).setCellValue("1");
        s.createRow(0).createCell((short) 1).setCellValue("2");
        s.createRow(0).createCell((short) 2).setCellValue("3");
        s.createRow(0).createCell((short) 3).setCellValue("4");
        s.createRow(0).createCell((short) 4).setCellValue("5");
        
        // 在sheet上输入数据
        list = enterProceduralService.getEnterProcedural(enterProcedural);
        for (short i = 1; i < list.size() + 1; i++) {

            HSSFRow row = s.createRow(i);

            row.createCell((short) 0).setCellValue(
                    list.get(i - 1).getMacId());
            row.createCell((short) 1).setCellValue(
                    list.get(i - 1).getStoreName());
            row.createCell((short) 2).setCellValue(
                    list.get(i - 1).getPadInfoId());
            
            row.createCell((short) 3).setCellValue(
                    new DateUtils().cal(new Long(list.get(i - 1)
                            .getAdvTime()), ""));
            row.createCell((short) 4).setCellValue(
                    new Long(list.get(i - 1).getAdvTime()) / 1000);
            

            }
        list = enterProceduralService.getAllEnterProcedural(enterProcedural);
        for (int i = 1; i < (list.size()-1)/60000 +2; i++) {
             
            HSSFSheet s2 = wb.createSheet("详情"+i);
            s2.setColumnWidth((short) 0, (short) 6000);
            s2.setColumnWidth((short) 1, (short) 6000);
            s2.setColumnWidth((short) 2, (short) 6000);

            s2.setColumnWidth((short) 3, (short) 6000);
            s2.setColumnWidth((short) 4, (short) 6000);
            s2.createRow(0).createCell((short) 0).setCellValue("1");
            s2.createRow(0).createCell((short) 1).setCellValue("2");
            s2.createRow(0).createCell((short) 2).setCellValue("3");
            s2.createRow(0).createCell((short) 3).setCellValue("4");
            s2.createRow(0).createCell((short) 4).setCellValue("5");
            for (int j = i==1? i: (i-1)*60000+1 ; j <= (list.size()>=i*60000 ? i*60000+1 : list.size()) ; j++) {
                HSSFRow row = null ;
               if(i==1)
                   row = s2.createRow(j);
               else
                   row = s2.createRow(j-(i-1)*60000);

                row.createCell((short) 0).setCellValue(
                        list.get(j - 1).getMacId());
                row.createCell((short) 1).setCellValue(
                        list.get(j - 1).getStoreName());
                row.createCell((short) 2).setCellValue(
                        new SimpleDateFormat("yyyy-MM-dd kk:mm:ss").format(
                        list.get(j - 1).getCreateDate()));
                row.createCell((short) 3).setCellValue(
                        list.get(j - 1).getApkName());
                if(list.get(j - 1).getUseTime()!=null)
                row.createCell((short) 4).setCellValue(
                        list.get(j - 1).getUseTime()/1000);
                else
                    row.createCell((short) 4).setCellValue