Swift3：HTTP POST请求，参数除以“ /”

Question

This is the acceptable POST request that server(using codeigniter) accepts.

As it is shown, it doesn't take keys, but only values.

The first value starts with "/", and "/" is used between values.

http://example.com/index.php/api/signup/value01/value02/value03

I have this code, written in Swift3.

let serverUrl = "http://example.com/index.php/api/signup"
let parameterString = "/value01/value02/value03"

let url: URL = URL(string: serverUrl)!
let session = URLSession.shared
let request = NSMutableURLRequest(url: url)
request.httpMethod = "POST"
request.cachePolicy = NSURLRequest.CachePolicy.reloadIgnoringCacheData
request.httpBody = parameterString.data(using: String.Encoding.utf8)

let task = session.dataTask(with: request as URLRequest, completionHandler: {(data, response, error) in 

}) task.resume()

It gets an error, and the server responds that it didn't receive any parameter.

But, if I copy paste the below code to Browser, it works perfect.

http://example.com/index.php/api/signup/value01/value02/value03

The swift3 code worked for another server, which accepted POST requests written this way.

http://example.com/api?key=value&key=value

Answer 1

Thank you @Tj3n @Leo Dabus @GoodSp33d !

I was able to solve the problem, using your suggestions.

The server php also used "URL-encode RFC 1738 (eg "%E6%84%9B" for "愛")" for certain string values.

So, I added

let newString = oldString.addingPercentEncoding(withAllowedCharacters:NSCharacterSet.urlQueryAllowed)!

to encode some string values and the problem solved.

So, this is the solution in a simplified version.

let serverUrl = "http://example.com/index.php/api/signup/value01/value02/value03"

let url: URL = URL(string: serverUrl)!
let session = URLSession.shared
var request = URLRequest(url: url)
request.httpMethod = "POST"
request.cachePolicy = NSURLRequest.CachePolicy.reloadIgnoringCacheData

let task = session.dataTask(with: request as URLRequest, completionHandler: {(data, response, error) in 

}) task.resume()

This is the real POST request url that my code sent.

http://example.com/index.php/api/signup/1282283772/none/0204291/%E6%84%9B/0/70/null