Question

如何搜索一系列字符串，我想搜索userID

但是这次userID可能是“123”，下次是“zxvcvb”，所以我不能使用offsetBy

let userID = "12345"
let URL = "http://test/main/?Username=\(userID)#!/index.php"
let firstIndex = URL.index(of: "=")
let secondIndex = URL.index(of: "#")
let range = firstIndex...secondIndex //error

Answer 1

您可以使用regex获取这两个字符串之间的用户ID范围：

let userID = "12345"
let pattern = "(?<=Username=)(.*)(?=#!)"
let link = "http://test/main/?Username=\(userID)#!/index.php"
if let range = link.range(of: pattern, options: .regularExpression) {
     let id = link[range]
     print("id:", id)    // "id: 12345\n"
}

如何搜索一系列字符串

1 个答案: