使用字符串发送后请求

Question

我无法向接受字符串的服务器发送快速后请求。服务器不接受 JSON 数据。苹果库中有什么方法吗？我找不到。

或者你甚至可以帮助我告诉如何编写这样的方法？

let url = NSURL(string: "myUrl")
var session = NSURLSession.sharedSession()
let request = NSMutableURLRequest(URL: url)
    request.HTTPMethod = "POST"
var params = "login_act:'myUsername'&login_pwd:'myPassword'"

var err: NSError?
request.HTTPBody = NSJSONReadingOptions.
// The following method call does not accept the params variable type, although I need to send a String
request.HTTPBody = NSJSONSerialization.dataWithJSONObject(params, options: nil, error: &err)
request.addValue("application/json", forHTTPHeaderField: "Content-Type")
request.addValue("application/json", forHTTPHeaderField: "Accept")

var task = session.dataTaskWithRequest(request, completionHandler: {data, response, error -> Void in
    println("Response: \(response)")
    var strData = NSString(data: data, encoding: NSUTF8StringEncoding)
    println("Body: \(strData)")

感谢任何帮助！！！

Answer 1

如果服务器不接受 json，那么将 header Content-Type 设置为 application/json 的目的是什么？您有两种选择，要么将内容作为 json 发送，要么将 post 请求作为表单提交发送。我会告诉你两种可能的方法，

第一个只是简单的将表单参数发布到url，它不接受json，而是接受url编码的表单参数。

let url = NSURL(string: "myUrl")
var session = NSURLSession.sharedSession()
let request = NSMutableURLRequest(URL: url)
    request.HTTPMethod = "POST"
var params = "login_act=myUsername&login_pwd=myPassword"
request.HTTPBody = params.dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: false)
var err: NSError?

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

var task = session.dataTaskWithRequest(request, completionHandler: {data, response, error -> Void in
    println("Response: \(response)")
    var strData = NSString(data: data, encoding: NSUTF8StringEncoding)
    println("Body: \(strData)")
})

其他方法，如果你的服务器接受json参数，那么方法和你做的很相似。

let url = NSURL(string: "myUrl")
var session = NSURLSession.sharedSession()
let request = NSMutableURLRequest(URL: url)
    request.HTTPMethod = "POST"
var params = ["login_act":"myUsername", "login_pwd":"myPassword"]

var err: NSError?
// The following method call does not accept the params variable type, although I need to send a String
request.HTTPBody = NSJSONSerialization.dataWithJSONObject(params, options: nil, error: &err)
request.addValue("application/json", forHTTPHeaderField: "Content-Type")
request.addValue("application/json", forHTTPHeaderField: "Accept")

var task = session.dataTaskWithRequest(request, completionHandler: {data, response, error -> Void in
    println("Response: \(response)")
    var strData = NSString(data: data, encoding: NSUTF8StringEncoding)
    println("Body: \(strData)")
})

Answer 2

使用 Alamofire 与 Swift 进行 HTTP 网络可能会更好。

https://github.com/Alamofire/Alamofire