Ios 如何在swift中使用Alamofire/URLSession.dataTask发布带有参数的请求

我尝试了两种方法来发布调用API的请求

Alamofire

&

URLSession.dataTask

但我无法成功发送参数

这些是我尝试过的方法

参数

var params :[String: AnyObject]?
    params = ["Some_ID" : "53" as AnyObject, "REQUEST" : "SOME_API_NAME" as AnyObject]

一个-->阿拉莫菲尔

Alamofire.request(BaseURL, method: .post, parameters: params, encoding: JSONEncoding.default, headers: nil).responseJSON { (response:DataResponse<Any>) in

        switch(response.result) {
        case .success(_):
            if response.result.value != nil{
                print(response.result.value as Any)
            }
            break

        case .failure(_):
            print(response.result.error as Any)
            break
        }
    }

在这两种情况下，我都面临着同样的问题。API调用并成功到达服务器，但服务器返回错误请求参数丢失

有趣的是，API在POSTMAN中工作和响应，并在我的Objective-C代码中使用AFNetworking

请告诉我我做错了什么

使用第二种方法（URLSession.dataTask）从参数字典中获取POST字符串，如下所示。希望这对你的情况有效

试试下面的代码，让我知道。现在，从

viewDidLoad

调用

getDataFromAPI

并进行测试

func getPostString(params:[String:Any]) -> String
{
    var data = [String]()
    for(key, value) in params
    {
        data.append(key + "=\(value)")
    }
    return data.map { String($0) }.joined(separator: "&")
}

func getDataFromAPI() {

    var params :[String: Any]?
    params = ["Some_ID" : "111", "REQUEST" : "SOME_API_NAME"]

    let url =  URL(string:BaseURL)
    var request = URLRequest(url: url!)
    request.httpMethod = "POST"

    let postString = getPostString(params: params!)
    request.httpBody = postString.data(using: .utf8)

    let task = URLSession.shared.dataTask(with: request as URLRequest) { data, response, error in
        guard error == nil && data != nil else {
            print("error=\(String(describing: error))")
            return
        }
        if let httpStatus = response as? HTTPURLResponse, httpStatus.statusCode != 200 {
            print("statusCode should be 200, but is \(httpStatus.statusCode)")
            print("response = \(String(describing: response))")
            return
        }
        let responseString = NSString(data: data!, encoding: String.Encoding.utf8.rawValue)!
        let responseStringForJson = "[\(responseString)]"
        print("result = \(String(describing: responseStringForJson))")
    }
    task.resume()
}

---

您应该使用

[String:Any]

&避免使用CastOk，但也尝试使用它。可能您缺少端点<代码>Alamofire.request（BaseURL+端点？使用

request.httpBody=theJSONData

。存在无用的转换，并且不同（一个是ASCII，另一个是UTF8）：Dict=>Data=>String=>Data。在Swift 3+中避免

NSMutableURLRequest

，更喜欢

URLRequest

，甚至应该避免以后将

请求转换为URLRequest

func getPostString(params:[String:Any]) -> String
{
    var data = [String]()
    for(key, value) in params
    {
        data.append(key + "=\(value)")
    }
    return data.map { String($0) }.joined(separator: "&")
}

func getDataFromAPI() {

    var params :[String: Any]?
    params = ["Some_ID" : "111", "REQUEST" : "SOME_API_NAME"]

    let url =  URL(string:BaseURL)
    var request = URLRequest(url: url!)
    request.httpMethod = "POST"

    let postString = getPostString(params: params!)
    request.httpBody = postString.data(using: .utf8)

    let task = URLSession.shared.dataTask(with: request as URLRequest) { data, response, error in
        guard error == nil && data != nil else {
            print("error=\(String(describing: error))")
            return
        }
        if let httpStatus = response as? HTTPURLResponse, httpStatus.statusCode != 200 {
            print("statusCode should be 200, but is \(httpStatus.statusCode)")
            print("response = \(String(describing: response))")
            return
        }
        let responseString = NSString(data: data!, encoding: String.Encoding.utf8.rawValue)!
        let responseStringForJson = "[\(responseString)]"
        print("result = \(String(describing: responseStringForJson))")
    }
    task.resume()
}