在Java编程中，如何获取URL的一部分？

以下示例显示了如何通过net.URL类的url.getProtocol()和url.getFile()方法等获取URL的部分。

package com.jing;

import java.net.URL;

public class MyURL {
   
    public static void main(String[] args) throws Exception {
   
        String webUrl = "http://www.baidu.com/jing/index.html";
        URL url = new URL(webUrl);
        System.out.println("URL is " + url.toString());
        System.out.println("protocol is " + url.getProtocol());
        System.out.println("file name is " + url.getFile());
        System.out.println("host is " + url.getHost());
        System.out.println("path is " + url.getPath());
        System.out.println("port is " + url.getPort());
        System.out.println("default port is " + url.getDefaultPort());
    }
}
Java
上述代码示例将产生以下结果 -

URL is http://www.baidu.com/jing/index.html
protocol is http
file name is /jing/index.html
host is www.baidu.com
path is /jing/index.html
port is -1
default port is 80