swift - 如何在 URL 中使用特殊字符\n

Question

我有 POST 请求:

init (url: String,arg: String) {
    self.responseString = nil
    var request = URLRequest(url: URL(string: url)!)
    request.httpMethod = "POST"
    let postString = arg
    request.httpBody = postString.data(using: .utf8)
    let task = URLSession.shared.dataTask(with: request) {
        data, response, error in
        guard let data = data, error == nil else {                                                 
            print("error=\(error)")
            self.responseString = nil
            return
        }
        if let httpStatus = response as? HTTPURLResponse, httpStatus.statusCode != 200 {           //
            self.responseString = nil
        } else {
        self.responseString = String(data: data, encoding: .utf8)
        }
    }
    task.resume()
    }

当 arg 有一个字符\n 时，一半的 arg 文本会丢失。如何解决这个问题？

Answer 1

strUrl = strUrl.addingPercentEncoding(withAllowedCharacters: CharacterSet.urlQueryAllowed)!

let url = URL.init(string: strUrl)

let requestURL = URLRequest(url: url!)

• 您需要添加 addingPercentEncoding(withAllowedCharacters: CharacterSet.urlQueryAllowed) 方法以允许 URL 查询。