如何向Almofire请求添加参数 [英] How to add parameter to Almofire request

问题描述

免责声明：我是iOS编程新手，所以这个问题可能很简单。这不是一个技巧问题！

Disclaimer: I'm new to iOS programming, so this question is probably as simple as it looks. It's not a trick question!

我有一个使用Almofire发送HTTP请求的Swift项目。我想为每个请求的查询字符串添加一个参数。

I've a Swift project that uses Almofire to send HTTP requests. I want to add a parameter to the query string for every single request made.

所以，我想添加 mykey = myval 每个请求。

So, I want to add mykey=myval to every request.

• EG： http://example.com/index - > http://example.com/index?mykey=myval


• EG： http://example.com/index?key = val - > http://example.com/index?key=val&mykey=myval

• EG: http://example.com/index -> http://example.com/index?mykey=myval
• EG: http://example.com/index?key=val -> http://example.com/index?key=val&mykey=myval

我找到了所有请求似乎都经过

I have found that all requests seem to go through

public func request(URLRequest: URLRequestConvertible) -> Request {
    return Manager.sharedInstance.request(URLRequest.URLRequest)
}

在一个名为Almofire.swift的文件中

in a file named Almofire.swift

并通过

public func request(URLRequest: URLRequestConvertible) -> Request {
    var dataTask: NSURLSessionDataTask?
    dispatch_sync(queue) {
        dataTask = self.session.dataTaskWithRequest(URLRequest.URLRequest)
    }

    let request = Request(session: session, task: dataTask!)
    delegate[request.delegate.task] = request.delegate

    if startRequestsImmediately {
        request.resume()
    }

    return request
}

，所以我假设我需要在这里添加一些代码。由于我缺乏Swift知识，我花了几个小时进行实验但没有快乐 - 只有例外。

in a file named Manager.swift, so I'm presuming I need to add a bit of code here. Due to my lack of Swift knowledge I've spend hours experimenting but no joy - only exceptions.

有谁知道如何为所有请求添加参数？

Does anyone know how I can add a parameter to all requests?

推荐答案

您无需更改Alamofire代码中的任何内容。相反，您可以使用 URLRequestConvertible 协议将您的网址和参数封装在枚举中：

You don't need to change anything in Alamofire's code. Instead you can use the URLRequestConvertible protocol to encapsulate your URLs and parameter in an enum:

enum Router: URLRequestConvertible {
    static let baseURLString = "https://example.com" // define your base URL here
    static var defaultParams = ["myKey": "myValue"] // set the default params here

    // define a case for every request you need
    case Index
    case Endpoint1(param: String)
    case Endpoint2(param1: String, param2: String)

    var URLRequest: NSMutableURLRequest {
        let result: (path: String, parameters: [String: AnyObject]) = {
            // set the path and params for each request
            switch self {
            case .Index:
                return ("/index", Router.defaultParams)
            case .Endpoint1(let param):
                var params = Router.defaultParams
                params.updateValue(param, forKey: "key")
                return ("/endpoint", params)
            case .Endpoint2(let param1, let param2):
                var params = Router.defaultParams
                params.updateValue(param1, forKey: "key1")
                params.updateValue(param2, forKey: "key2")
                return ("/endpoint2", params)
            }
        }()

        // create the URL and the request
        let URL = NSURL(string: Router.baseURLString)!
        let URLRequest = NSURLRequest(URL: URL.URLByAppendingPathComponent(result.path))
        let encoding = Alamofire.ParameterEncoding.URL

        return encoding.encode(URLRequest, parameters: result.parameters).0
    }
}

然后你可以打电话给你的请求在以下问题中：

Then you can call your requests in the following matter:

// sends a request to 'https://example.com/index?myKey=myValue'
Alamofire.request(Router.Index).response { (request, urlResponse, data, error) -> Void in
    // handle response
}

// sends a request to 'https://example.com/endpoint?key=value&myKey=myValue'
Alamofire.request(Router.Endpoint1(param: "value")).response { (request, urlResponse, data, error) -> Void in
    // handle response
}

// sends a request to 'https://example.com/endpoint2?key1=value1&key2=value2&myKey=myValue'
Alamofire.request(Router.Endpoint2(param1: "value1", param2: "value2")).response { (request, urlResponse, data, error) -> Void in
    // handle response
}

这篇关于如何向Almofire请求添加参数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！