使用Swift 3上传到Imgur API后获取图片网址

Question

我使用Imgur API和Alamofire匿名上传图片。 但是，我没有在响应json中获取url。 这是我的代码：

    static func post(image: UIImage, for username: String) {

    let imageData = UIImagePNGRepresentation(image)
    let base64Image = imageData?.base64EncodedString(options: .lineLength64Characters)

    let url = "https://api.imgur.com/3/upload"

    let parameters = [
        "image": base64Image
    ]

    Alamofire.upload(multipartFormData: { multipartFormData in
        if let imageData = UIImageJPEGRepresentation(image, 1) {
            multipartFormData.append(imageData, withName: username, fileName: "\(username).png", mimeType: "image/png")
        }

        for (key, value) in parameters {
            multipartFormData.append((value?.data(using: .utf8))!, withName: key)
        }}, to: url, method: .post, headers: ["Authorization": "Client-ID " + Constants.IMGUR_CLIENT_ID],
            encodingCompletion: { encodingResult in
                switch encodingResult {
                case .success(let upload, _, _):
                    upload.response { response in
                        print(response) // url nowhere to be found
                    }
                case .failure(let encodingError):
                    print("error:\(encodingError)")
                }
    })

}

这是打印的回复：

Answer 1

您的代码中的问题是您只是打印请求的response ，您实际上需要将其解析为JSON而不是检查您的请求的响应，它确实包含您刚刚上传的图像URL。 这是你应该如何解析response并获取图像网址。

static func post(image: UIImage, for username: String) {

    let imageData = UIImagePNGRepresentation(image)
    let base64Image = imageData?.base64EncodedString(options: .lineLength64Characters)

    let url = "https://api.imgur.com/3/upload"

    let parameters = [
        "image": base64Image
    ]

    Alamofire.upload(multipartFormData: { multipartFormData in
        if let imageData = UIImageJPEGRepresentation(image, 1) {
            multipartFormData.append(imageData, withName: username, fileName: "\(username).png", mimeType: "image/png")
        }

        for (key, value) in parameters {
            multipartFormData.append((value?.data(using: .utf8))!, withName: key)
        }}, to: url, method: .post, headers: ["Authorization": "Client-ID " + Constants.IMGUR_CLIENT_ID],
            encodingCompletion: { encodingResult in
                switch encodingResult {
                case .success(let upload, _, _):
                    upload.response { response in
                        //This is what you have been missing
                         let json = try? JSONSerialization.jsonObject(with: response.data!, options: .allowFragments) as! [String:Any]
                         print(json)
                         let imageDic = json?["data"] as? [String:Any]
                         print(imageDic?["link"])
                    }
                case .failure(let encodingError):
                    print("error:\(encodingError)")
                }
    })

}