如何将nsurl的主机转换为小写

Question

假设我有www.GOOgle.com / .......

我想将其更改为www.google.com / ....

并保持其余的url原样。

我曾尝试使用NSURLComponents，但它没有用。

// I am taking input from textfield and making the nsurl.

 NSURLComponents *components = [NSURLComponents componentsWithString: _textfield.text]; // input from textfield
[[components host] lowercaseString];
 NSURL *urlin = [components URL]; //but this gives, www.GOOgle.com

任何领导都表示赞赏。

Answer 1

正如@Larme建议你可以在url中使用setHost方法

见下面的例子

NSURLComponents *components = [NSURLComponents componentsWithString: @"https://sTackoverFlow.com/questions/47924276/how-to-convert-host-of-nsurl-to-lowercase"]; 
[components setHost:[components.host lowercaseString] ]; 
NSLog(@"%@",components.URL)

H ttps：//stackoverflow.com/questions/47924276/how-to-convert-host-of-nsurl-to-lowercase

---

注意：

http：//需要在String中添加，否则你将获得主机nil，例如https://www.sTackoverFlow.com/questions/47924276/how-to-convert-host-of-nsurl-to-lowercase它将起作用

而

呜呜呜.stack overflow.com/questions/47924276/how-to-convert-host-of-NS URL-to-lowercase

不管用

Answer 2

如果你的字符串只是url那么你可以尝试这个，

let strURL = "http://GOogLe.Com/Testt/xyz"
let url = NSURL(string: strURL)
let domain: String = (url?.host)! //get your host name
print(domain) //GOogLe.Com

let str = strURL.replacingOccurrences(of: domain, with: domain.lowercased())
print(str) //http://google.com/Testt/xyz

Answer 3

1. 将字符串转换为小写。
2. 然后将转换后的字符串值传递给componentsWithString方法。

示例：NSString * lowerCaseStringValue = [_textfield.text lowercaseString]; [NSURLComponents componentsWithString：lowerCaseStringValue];