java写入excel

    public void  importExcel() throws IOException, WriteException {
        ArrayList<String[]> list1 = new ArrayList<>();
        list1.add(new String[]{"1","user1","1"});
        list1.add(new String[]{"2","user2","2"});
        list1.add(new String[]{"3","user3","3"});
        
        String[] title=new String[]{"序号","账户","密码"};
        File file = new File("E:\\working\\account.xls");
        //判断file是否存在
        if(file.exists()){
            file.delete();
            System.out.println("原有表格删除成功");
        }
        file.createNewFile();
        //创建工作簿
        WritableWorkbook workbook = Workbook.createWorkbook(file);
        WritableSheet sheet1 = workbook.createSheet("sheet1", 0);
        Label label=null;
        //设置列名
        for (int j = 0; j <title.length ; j++) {
            label=new Label(j,0,title[j]);
            sheet1.addCell(label);
        }
        //方便定义行
        int count=0;
        //将list中的数据添加至工作簿中 String[] title
        for (int i=0;i<list1.size();i++) {
            String[] oneh = list1.get(i);
            count++;
            label=new Label(0,count,oneh[0]);
            sheet1.addCell(label);
            label=new Label(1,count,oneh[1]);
            sheet1.addCell(label);
            label=new Label(2,count,oneh[2]);
            sheet1.addCell(label);
        }
        workbook.write();
        workbook.close();
        log.info("导入user用户成功！！！！！！");
    }