POST 请求和一个简单的字符串在主体与 Alamofire

Your example Alamofire.request(.POST, "http://mywebsite.example/post-request", parameters: ["foo": "bar"]) already contains "foo=bar" string as its body. But if you really want string with custom format. You can do this:

Alamofire.request(.POST, "http://mywebsite.example/post-request", parameters: [:], encoding: .Custom({
(convertible, params) in
var mutableRequest = convertible.URLRequest.copy() as NSMutableURLRequest
mutableRequest.HTTPBody = "myBodyString".dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: false)
return (mutableRequest, nil)
}))

Note: parameters should not be nil

UPDATE (Alamofire 4.0, Swift 3.0):

In Alamofire 4.0 API has changed. So for custom encoding we need value/object which conforms to ParameterEncoding protocol.

extension String: ParameterEncoding {


public func encode(_ urlRequest: URLRequestConvertible, with parameters: Parameters?) throws -> URLRequest {
var request = try urlRequest.asURLRequest()
request.httpBody = data(using: .utf8, allowLossyConversion: false)
return request
}


}


Alamofire.request("http://mywebsite.example/post-request", method: .post, parameters: [:], encoding: "myBody", headers: [:])

If you want to post string as raw body in request

return Alamofire.request(.POST, "http://mywebsite.com/post-request" , parameters: [:], encoding: .Custom({
(convertible, params) in
let mutableRequest = convertible.URLRequest.copy() as! NSMutableURLRequest


let data = ("myBodyString" as NSString).dataUsingEncoding(NSUTF8StringEncoding)
mutableRequest.HTTPBody = data
return (mutableRequest, nil)
}))

I modified @Silmaril's answer to extend Alamofire's Manager. This solution uses EVReflection to serialize an object directly:

//Extend Alamofire so it can do POSTs with a JSON body from passed object
extension Alamofire.Manager {
public class func request(
method: Alamofire.Method,
_ URLString: URLStringConvertible,
bodyObject: EVObject)
-> Request
{
return Manager.sharedInstance.request(
method,
URLString,
parameters: [:],
encoding: .Custom({ (convertible, params) in
let mutableRequest = convertible.URLRequest.copy() as! NSMutableURLRequest
mutableRequest.HTTPBody = bodyObject.toJsonString().dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: false)
return (mutableRequest, nil)
})
)
}
}

Then you can use it like this:

Alamofire.Manager.request(.POST, endpointUrlString, bodyObject: myObjectToPost)

func paramsFromJSON(json: String) -> [String : AnyObject]?
{
let objectData: NSData = (json.dataUsingEncoding(NSUTF8StringEncoding))!
var jsonDict: [ String : AnyObject]!
do {
jsonDict = try NSJSONSerialization.JSONObjectWithData(objectData, options: .MutableContainers) as! [ String : AnyObject]
return jsonDict
} catch {
print("JSON serialization failed:  \(error)")
return nil
}
}


let json = Mapper().toJSONString(loginJSON, prettyPrint: false)


Alamofire.request(.POST, url + "/login", parameters: paramsFromJSON(json!), encoding: .JSON)

Xcode 8.X , Swift 3.X

Easy Use;

 let params:NSMutableDictionary? = ["foo": "bar"];
let ulr =  NSURL(string:"http://mywebsite.com/post-request" as String)
let request = NSMutableURLRequest(url: ulr! as URL)
request.httpMethod = "POST"
request.setValue("application/json", forHTTPHeaderField: "Content-Type")
let data = try! JSONSerialization.data(withJSONObject: params!, options: JSONSerialization.WritingOptions.prettyPrinted)


let json = NSString(data: data, encoding: String.Encoding.utf8.rawValue)
if let json = json {
print(json)
}
request.httpBody = json!.data(using: String.Encoding.utf8.rawValue);




Alamofire.request(request as! URLRequestConvertible)
.responseJSON { response in
// do whatever you want here
print(response.request)
print(response.response)
print(response.data)
print(response.result)


}

If you use Alamofire, it is enough to set encoding type to URLEncoding.httpBody

With that, you can send your data as a string in the httpbody although you defined it as json in your code.

It worked for me..

Updated for Badr Filali's question:

var url = "http://..."
let _headers : HTTPHeaders = ["Content-Type":"application/x-www-form-urlencoded"]
let params : Parameters = ["grant_type":"password","username":"mail","password":"pass"]


let url =  NSURL(string:"url" as String)


request(url, method: .post, parameters: params, encoding: URLEncoding.httpBody, headers: _headers).responseJSON(
completionHandler: { response in response
let jsonResponse = response.result.value as! NSDictionary
        

if jsonResponse["access_token"] != nil
{
access_token = String(describing: jsonResponse["accesstoken"]!)
}
})

You can do this:

1. I created a separated request Alamofire object.
2. Convert string to Data

3. Put in httpBody the data

   var request = URLRequest(url: URL(string: url)!)
   request.httpMethod = HTTPMethod.post.rawValue
   request.setValue("application/json", forHTTPHeaderField: "Content-Type")
   
   
   let pjson = attendences.toJSONString(prettyPrint: false)
   let data = (pjson?.data(using: .utf8))! as Data
   
   
   request.httpBody = data
   
   
   Alamofire.request(request).responseJSON { (response) in
   
   
   
   
   print(response)
   
   
   }
   

I have done it for array from strings. This solution is adjusted for string in body.

The "native" way from Alamofire 4:

struct JSONStringArrayEncoding: ParameterEncoding {
private let myString: String


init(string: String) {
self.myString = string
}


func encode(_ urlRequest: URLRequestConvertible, with parameters: Parameters?) throws -> URLRequest {
var urlRequest = urlRequest.urlRequest


let data = myString.data(using: .utf8)!


if urlRequest?.value(forHTTPHeaderField: "Content-Type") == nil {
urlRequest?.setValue("application/json", forHTTPHeaderField: "Content-Type")
}


urlRequest?.httpBody = data


return urlRequest!
}
}

And then make your request with:

Alamofire.request("your url string", method: .post, parameters: [:], encoding: JSONStringArrayEncoding.init(string: "My string for body"), headers: [:])

I've used answer of @afrodev as reference. In my case I take parameter to my function as string that have to be posted in request. So, here is the code:

func defineOriginalLanguage(ofText: String) {
let text =  ofText
let stringURL = basicURL + "identify?version=2018-05-01"
let url = URL(string: stringURL)


var request = URLRequest(url: url!)
request.httpMethod = HTTPMethod.post.rawValue
request.setValue("text/plain", forHTTPHeaderField: "Content-Type")
request.httpBody = text.data(using: .utf8)


Alamofire.request(request)
.responseJSON { response in
print(response)
}
}

Based on Illya Krit's answer

Details

• Xcode Version 10.2.1 (10E1001)
• Swift 5
• Alamofire 4.8.2

Solution

import Alamofire


struct BodyStringEncoding: ParameterEncoding {


private let body: String


init(body: String) { self.body = body }


func encode(_ urlRequest: URLRequestConvertible, with parameters: Parameters?) throws -> URLRequest {
guard var urlRequest = urlRequest.urlRequest else { throw Errors.emptyURLRequest }
guard let data = body.data(using: .utf8) else { throw Errors.encodingProblem }
urlRequest.httpBody = data
return urlRequest
}
}


extension BodyStringEncoding {
enum Errors: Error {
case emptyURLRequest
case encodingProblem
}
}


extension BodyStringEncoding.Errors: LocalizedError {
var errorDescription: String? {
switch self {
case .emptyURLRequest: return "Empty url request"
case .encodingProblem: return "Encoding problem"
}
}
}

Usage

Alamofire.request(url, method: .post, parameters: nil, encoding: BodyStringEncoding(body: text), headers: headers).responseJSON { response in
print(response)
}

My case, posting alamofire with content-type: "Content-Type":"application/x-www-form-urlencoded", I had to change encoding of alampfire post request

from : JSONENCODING.DEFAULT to: URLEncoding.httpBody

here:

let url = ServicesURls.register_token()
let body = [
"UserName": "Minus28",
"grant_type": "password",
"Password": "1a29fcd1-2adb-4eaa-9abf-b86607f87085",
"DeviceNumber": "e9c156d2ab5421e5",
"AppNotificationKey": "test-test-test",
"RegistrationEmail": email,
"RegistrationPassword": password,
"RegistrationType": 2
] as [String : Any]




Alamofire.request(url, method: .post, parameters: body, encoding: URLEncoding.httpBody , headers: setUpHeaders()).log().responseJSON { (response) in

let parameters = ["foo": "bar"]
              

// All three of these calls are equivalent
AF.request("https://httpbin.org/post", method: .post, parameters: parameters)
AF.request("https://httpbin.org/post", method: .post, parameters: parameters, encoder: URLEncodedFormParameterEncoder.default)
AF.request("https://httpbin.org/post", method: .post, parameters: parameters, encoder: URLEncodedFormParameterEncoder(destination: .httpBody))