本文介绍了确定字符串是否是java中的绝对URL或相对URL的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
给定一个字符串,如何确定它是Java中的绝对URL还是相对URL?我尝试了以下代码:
Given a string, how do I determine if it is absolute URL or relative URL in Java? I tried the following code:
private boolean isAbsoluteURL(String urlString)
{
boolean result = false;
try
{
URL url = new URL(urlString);
String protocol = url.getProtocol();
if (protocol != null && protocol.trim().length() > 0)
result = true;
}
catch (MalformedURLException e)
{
return false;
}
return result;
}
问题是所有相对URL都抛出了MalformedURLException,因为没有协议已定义(例如:www.google.com和/ questions / ask)。
The problem is that all relative URLs are throwing the MalformedURLException as there is no protocol defined (example: www.google.com and /questions/ask).
推荐答案
如何:
final URI u = new URI("http://www.anigota.com/start");
// URI u = new URI("/works/with/me/too");
// URI u = new URI("/can/../do/./more/../sophis?ticated=stuff+too");
if(u.isAbsolute())
{
System.out.println("Yes, i am absolute!");
}
else
{
System.out.println("Ohh noes, it's a relative URI!");
}
详情请见:
HTH
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