Swift 3.0迁移后的Alamofire错误：“ Call'中的额外参数”（请求方法） [英] Alamofire error after Swift 3.0 migration: “Extra argument in Call'” (request method)

问题描述

我目前正在将代码库更新为Swift 3.0，并且正在使用Alamofire。
因此，我不得不将Alamofire更新为4.0（Alamofire git repo）。
我有一个请求方法
使用Xcode的迁移工具后，我最终遇到以下错误： Call中的额外参数 。
我不太确定为什么此方法不再有效。
任何帮助都将是很棒的！

I am currently in the process of updating my codebase to Swift 3.0, and I am using Alamofire.
Thus, I had to update Alamofire to 4.0 (Alamofire git repo).
I have a request method to fetch data from the server, and before migration, it worked wonderfully.
After using Xcode's migration tool, I ended up with this error : "Extra argument in Call".
I'm not quite sure why this method is no longer working.
Any help would be wonderful!

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

    }
}

Alamofire4.0迁移指南

编辑：JSONDictionary：

JSONDictionary:

typealias JSONDictionary = Dictionary<String, Any>

sharedAlamoFireManager也是SessionManager

sharedAlamoFireManager is also a SessionManager

推荐答案

每个AlamoFire docs RequestAdapter协议是Alamofire 4中的一项全新功能。它允许在创建之前对在SessionManager上进行的每个请求进行检查和调整。使用适配器的一种非常特定的方法是将Authorization标头附加到特定类型的身份验证后面的请求中。

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

首先，我必须创建AccessTokenAdapter类：

First I had to create the AccessTokenAdapter class:

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：

Then I needed to update my method:

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

    }
}

这篇关于Swift 3.0迁移后的Alamofire错误：“ Call'中的额外参数”（请求方法）的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！