Java URL的理解

public static void main(String[] args) {
        try {
            URL url = new URL("https://blog.csdn.net/lu202032?spm=1018.2226.3001.5343");
            //1.获取该URL的协议名
            System.out.println(url.getProtocol());
            //2.获取该URL的主机名
            System.out.println(url.getHost());
            //3.获取该URL的端口号,没有端口号返回-1
            System.out.println(url.getPort());
            //4.获取该URL的文件路径
            System.out.println(url.getPath());
            //5.获取该URL的文件名
            System.out.println(url.getFile());
            //6.获取该URL的查询名
            System.out.println(url.getQuery());
        } catch (MalformedURLException e) {
            e.printStackTrace();
        }
    }

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