ios - 从 NSString 或 NSUrl 获取网站的根目录

Question

有什么想法可以从 NSString 或 NSURL 获取网站的根目录吗？因此，如果我的 URL 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]像这样：

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/'

Answer 3

您可以从字符串中删除NSURL's 。path这说明了作为根站点一部分的端口号和其他数据。

NSString *urlString = @"http://www.foo.com/bar/baragain";
NSURL *rootUrl = [NSURL URLWithString:urlString];
NSString *rootUrlString = [urlString stringByReplacingOccurrencesOfString:rootUrl.path withString:@""];

Answer 4

NSString *str = @"http://www.foo.com/bar/baragain"; 
NSArray *temp = [str componentsSeparatedByString: @".com"];
str = [NSString stringWithFormat: @"%@%@", [temp objectAtIndex:0], @".com"];