请求正文-Swift中的HTTP POST "/“字符问题

import Foundation

let urlString = "http://example.com/"
let url = URL(string: urlString)

var request = URLRequest(url: url!)
request.httpMethod = "POST"

let bodyString = "Your request body"
request.httpBody = bodyString.data(using: .utf8)

request.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type")

let task = URLSession.shared.dataTask(with: request) { (data, response, error) in
    if let error = error {
        print("Error: \(error)")
    } else if let data = data {
        let responseString = String(data: data, encoding: .utf8)
        print("Response: \(responseString ?? "")")
    }
}
task.resume()