我有以下字符串:
"Notes[9219:1224244] [BoringSSL] Function boringssl_context_get_peer_sct_list: line 1757 received sct extension length is less than sct data length [[["encendedor","lighter",null,null,1]],null,"en"]"
我只想提取第一次出现的引号之间的字符串,在本例中为“encendedor”。 我尝试了以下代码,这是我从 this question. 中了解到的
//finalTrans has the full string that needs to be shortened
let finalTrans = (String(data: data, encoding: .utf8)!)
let regex = try! NSRegularExpression(pattern:"[[[(.*?),", options: [])
var results = [String]()
regex.enumerateMatches(in: finalTrans, options: [], range: NSMakeRange(0, finalTrans.utf16.count)) { result, flags, stop in
if let r = result?.range(at: 1), let range = Range(r, in: finalTrans) {
results.append(String(finalTrans[range]))
}
}
//prints the new string
print(results)
我目前遇到这个错误:
Thread 6: Fatal error: 'try!' expression unexpectedly raised an error: Error Domain=NSCocoaErrorDomain Code=2048 "The value “[[[(.*?),” is invalid." UserInfo={NSInvalidValue=[[[(.*?),}
我怎样才能正确提取这个字符串?谢谢您的帮助。
最佳答案
您还可以使用范围在两个字符串之间进行切片。
extension String {
func slice(from: String, to: String) -> String? {
return (range(of: from)?.upperBound).flatMap { substringFrom in
(range(of: to, range: substringFrom..<endIndex)?.lowerBound).map { substringTo in
String(self[substringFrom..<substringTo])
}
}
}
}
let slicedString = yourString.slice(from: "\"", to: "\"") // Optional("encendedor")
关于swift - 获取两个字符串之间的字符串 Swift,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/52511905/