无法在URL + swift中编码Plus字符

Question

我正在使用GET方法,我必须在URL中传递电子邮件地址.API期望它被编码.我试过编码选项,但'+'字符无法编码.

我尝试使用以下代码

let encodedEmail = emailAddressTxt.text!.addingPercentEncoding(withAllowedCharacters:.urlHostAllowed)

let urlString = "http://www.example.com/User/GetUserDetailsByEmailAddress?EmailAddress=\(encodedEmail!)"

print(escapedString)

它打印http://www.example.com/User/GetUserDetailsByEmailAddress?EmailAddress=mano+1%40gmail.com

其中'@'字符仅被编码而'+'未被编码.

Answer 1

不幸的是,CharacterSet.urlHostAllowed和CharacterSet.urlQueryAllowed包含+的允许.由于历史原因,大多数Web服务器都将其+视为whitespace(), so you need to escape +.

为此,您可能需要定义自己的CharacterSet:

extension CharacterSet {
    static let rfc3986Unreserved = CharacterSet(charactersIn: "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-._~")
}

let emailAddressText = "mano+1@gmail.com"

let encodedEmail = emailAddressText.addingPercentEncoding(withAllowedCharacters:.rfc3986Unreserved)

print(encodedEmail!) //->mano%2B1%40gmail.com

Answer 2

当您使用 .urlHostAllowed 字符集“+”时，不会进行编码。

向字符串添加扩展名，如下所示

public func stringByAddingPercentEncodingToData() -> String? {
    let finalString = self.addingPercentEncoding(withAllowedCharacters: CharacterSet.urlHostAllowed)?.replacingOccurrences(of: "&", with: "%26").replacingOccurrences(of: "+", with: "%2B")
    return finalString
}

你可以做这样的事情。