Question

我目前正在将我的代码库更新为Swift 3.0，我正在使用Alamofire。
因此，我不得不将Alamofire更新为4.0（Alamofire git repo）。
我有一个请求从服务器获取数据的方法，在迁移之前，它运行得非常好。
使用Xcode的迁移工具后，我最终得到了这个错误："Extra argument in Call"。
我＆＃39 ;我不太清楚为什么这种方法不再有效。
任何帮助都会很精彩！

class func makeRequest(
    _ method: RequestMethod,
    authorization: String?,
    uri: String,
    params: JSONDictionary?,
    retry: Bool = true,
    completionHandler: @escaping RequestCompletionBlock)
{

    let requestURL = baseURL + uri
    let authHeader: Dictionary<String, String>? = authorization != nil ? ["Authorization" : authorization!] : nil

    //requestURL is highlighted, says "Extra argument in call"
    sharedAlamofireManager.request(Method(rawValue: method.rawValue)!, requestURL, parameters: params, encoding: .JSON, headers: authHeader).responseJSON {
        response in

    }
}

Migration Guide for Alamofire4.0

编辑：JSONDictionary：

typealias JSONDictionary = Dictionary<String, Any>

sharedAlamoFireManager也是一个SessionManager

Answer 1

Per AlamoFire docs The RequestAdapter protocol is a completely new feature in Alamofire 4. It allows each Request made on a SessionManager to be inspected and adapted before being created. One very specific way to use an adapter is to append an Authorization header to requests behind a certain type of authentication.

标头不再是请求方法的参数，而是设置在请求适配器内。

首先我必须创建AccessTokenAdapter类：

class AccessTokenAdapter: RequestAdapter {
    private let accessToken: String

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

    func adapt(_ urlRequest: URLRequest) throws -> URLRequest {
        var urlRequest = urlRequest

        if urlRequest.urlString.hasPrefix(RequestManager.returnBaseURL()) {
            urlRequest.setValue("Bearer " + accessToken, forHTTPHeaderField: "Authorization")
        }

        return urlRequest
    }
}

然后我需要更新我的方法：

class func makeRequest(
    _ method: RequestMethod,
    authorization: String?,
    uri: String,
    params: JSONDictionary?,
    retry: Bool = true,
    completionHandler: @escaping RequestCompletionBlock)
{

    let requestURL = baseURL + uri
    var accessToken: String?
    if let authorization = authorization {
        accessToken = authorization
    }else{
        accessToken = self.token()!
    }

    sharedAlamofireManager.adapter = AccessTokenAdapter(accessToken: accessToken!)

    sharedAlamofireManager.request(requestURL, method: .get, parameters: params, encoding: JSONEncoding.default)
        .responseJSON { response in

    }
}

Swift 3.0迁移后的Alamofire错误：“Call＆＃39;中的额外参数”（请求方法）

1 个答案: