java通过读取网络文件url，获取输入流

 

    /*读取网络文件*/
    public static InputStream getFileInputStream(String path) {
        URL url = null;
        try {
            url = new URL(path);
            HttpURLConnection conn = (HttpURLConnection)url.openConnection();
            //设置超时间为3秒
            conn.setConnectTimeout(3*1000);
            //防止屏蔽程序抓取而返回403错误
            conn.setRequestProperty("User-Agent", "Mozilla/4.0 (compatible; MSIE 5.0; Windows NT; DigExt)");
            //得到输入流
            return conn.getInputStream();
        } catch (Exception e) {
            logger.error("读取网络文件异常:"+path);
        }
        return null;
    }