java URL 类 获取 相关 参数
通过URL类能够帮助我们获取url相关的一些参数。

import java.net.MalformedURLException;import java.net.URL;public class URLTest{private static void testUrl(String path){URL url = null;try{url = new URL(path);}catch (MalformedURLException e){e.printStackTrace();}System.out.println("getAuthority:" + url.getAuthority());System.out.println("getDefaultPort:" + url.getDefaultPort());System.out.println("getFile:" + url.getFile());System.out.println("getHost:" + url.getHost());System.out.println("getPath:" + url.getPath());System.out.println("getPort:" + url.getPort());System.out.println("getProtocol:" + url.getProtocol());System.out.println("getQuery:" + url.getQuery());System.out.println("getRef:" + url.getRef());System.out.println("getUserInfo:" + url.getUserInfo());}public static void main(String[] args){System.out.println("==http://www.baidu.com==");testUrl("http://www.baidu.com");System.out.println("==https://passport.baidu.com/==");testUrl("https://passport.baidu.com/");}}

==http://www.baidu.com==getAuthority:www.baidu.comgetDefaultPort:80getFile:getHost:www.baidu.comgetPath:getPort:-1getProtocol:httpgetQuery:nullgetRef:nullgetUserInfo:null==https://passport.baidu.com/==getAuthority:passport.baidu.comgetDefaultPort:443getFile:/getHost:passport.baidu.comgetPath:/getPort:-1getProtocol:httpsgetQuery:nullgetRef:nullgetUserInfo:null