生成TXT文件

本地生成txt文件以及页面生成txt文件

 public static void main(String[] args) {
        try {
            File file;
            //相对路径
//            String path = Thread.currentThread().getContextClassLoader().getResource("").getPath() + System.currentTimeMillis() + ".txt";
            //绝对路径
            String path="E:\\test.txt";
            file = new File(path);
            //检查文件是否存在 不存在就创建
            if (!file.isFile()) {
                file.createNewFile();
            }
            BufferedWriter writer = new BufferedWriter(new FileWriter(path));
            String row;
            //将内容写入txt中 然后将流关闭
            writer.write("固件id:" + 10246 + "\r\n");
            writer.write("固件id\t厂商\t设备型号\r\n");
            row = 1 + "\t" + 2 + "\t" + 3 + "\r\n";
            writer.write(row);
            writer.close();
            //当在生成的时候会用到
//            String fileName = file.getName();
//            InputStream fis = new BufferedInputStream(new FileInputStream(path));
//            byte[] buffer = new byte[fis.available()];
//            fis.read(buffer);
//            fis.close();

//            response.reset();
//            response.addHeader("Content-Disposition", "attachment;filename=" + new String(fileName.getBytes()));
//            response.addHeader("Content-Length", "" + file.length());
//            OutputStream toClient = new BufferedOutputStream(response.getOutputStream());
//            response.setContentType("application/octet-stream");
//            toClient.write(buffer);
//            toClient.flush();
//            toClient.close();
            //删除该文件
//            if (file.exists()) {
//                file.delete();
//            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }