从NSString或NSUrl获取网站的根目录

Question

有关如何从NSString或NSURL获取网站根目录的任何想法？所以,如果我的网址是 http://www.foo.com/bar/baragain,我将如何获得http://www.foo.com/？

Answer 1

通过使用[url scheme]和[url host]喜欢这样:

NSURL *url = [NSURL URLWithString:@"http://www.foo.com/bar/baragain"];
NSLog(@"Base url: %@://%@", [url scheme], [url host]);
// output is http://www.foo.com

Answer 2

NSURL *url = [NSURL URLWithString:@"http://www.foo.com/bar/baragain"];
NSURL *root = [NSURL URLWithString:@"/" relativeToURL:url];
NSLog(@"root = '%@'", root.absoluteString); // root = 'http://www.foo.com/'