带有Alamofire的简单字符串的POST请求 [英] POST request with a simple string in body with Alamofire

问题描述

如何在我的iOS应用程序中使用Alamofire在HTTP正文中发送带有简单字符串的POST请求？

how is it possible to send a POST request with a simple string in the HTTP body with Alamofire in my iOS app?

默认Alamofire需要参数请求：

As default Alamofire needs parameters for a request:

Alamofire.request(.POST, "http://mywebsite.com/post-request", parameters: ["foo": "bar"])

这些参数包含键值对。但是我不想在HTTP正文中发送带有键值字符串的请求。

These parameters contain key-value-pairs. But I don't want to send a request with a key-value string in the HTTP body.

我的意思是这样的：

Alamofire.request(.POST, "http://mywebsite.com/post-request", body: "myBodyString")

推荐答案

您的示例 Alamofire.request（.POST，http： //mywebsite.com/post-request，参数：[foo：bar]）已经包含foo = bar字符串作为其正文。
但是如果你真的想要自定义格式的字符串。你可以这样做：

Your example Alamofire.request(.POST, "http://mywebsite.com/post-request", parameters: ["foo": "bar"]) already contains "foo=bar" string as its body. But if you really want string with custom format. You can do this:

Alamofire.request(.POST, "http://mywebsite.com/post-request", parameters: [:], encoding: .Custom({
            (convertible, params) in
            var mutableRequest = convertible.URLRequest.copy() as NSMutableURLRequest
            mutableRequest.HTTPBody = "myBodyString".dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: false)
            return (mutableRequest, nil)
        }))

注意：参数不应该 nil

UPDATE（Alamofire 4.0，Swift 3.0）：

在Alamofire 4.0 API已更改。因此，对于自定义编码，我们需要符合 ParameterEncoding 协议的值/对象。

In Alamofire 4.0 API has changed. So for custom encoding we need value/object which conforms to ParameterEncoding protocol.

extension String: ParameterEncoding {

    public func encode(_ urlRequest: URLRequestConvertible, with parameters: Parameters?) throws -> URLRequest {
        var request = try urlRequest.asURLRequest()
        request.httpBody = data(using: .utf8, allowLossyConversion: false)
        return request
    }

}

Alamofire.request("http://mywebsite.com/post-request", method: .post, parameters: [:], encoding: "myBody", headers: [:])

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