MYSQL和Swift-上传图片和FILE || 使用Alamofire会更好吗？

MYSQL和Swift-上传图片和FILE || 使用Alamofire会更好吗？

如果您不想迷失在创建复杂请求的过程中，那么像Alamofire这样的第三方库将很聪明。它与AFNetworking的作者相同，但是它是本机Swift库。

因此，Alamofire实现可能如下所示：

func performRequest(urlString: String, id: String, uuid: String, text: String, title: String, blogAttributedText: NSAttributedString, image: UIImage) {    let parameters = [        "id" : id,        "uuid" : uuid,        "Text" : text,        "Title" : title    ]    let imageData = UIImageJPEGRepresentation(image, 0.5)!    let blogData = NSKeyedArchiver.archivedData(withRootObject: blogAttributedText)    Alamofire.upload(        multipartFormdata: { multipartFormData in for (key, value) in parameters {     if let data = value.data(using: .utf8) {         multipartFormData.append(data, withName: key)     } } multipartFormData.append(imageData, withName: "image", fileName: "image.jpg", mimeType: "image/jpeg") multipartFormData.append(blogData, withName: "blog", fileName: "blog.archive", mimeType: "application/octet-stream")    },    to: urlString,    encodingCompletion: { encodingResult in        switch encodingResult {        case .success(let upload, _, _): upload     .validate()     .responseJSON { response in         switch response.result {         case .success(let value):  print("responseObject: (value)")         case .failure(let responseError):  print("responseError: (responseError)")         } }        case .failure(let encodingError): print("encodingError: (encodingError)")        }    })}

---

如果您要自己建立此请求，我建议一些事情。首先，由于您要发送不同类型的文件，因此可能需要一些不错的类型来封装它：

struct FilePayload {    let fieldname: String    let filename: String    let mimetype: String    let payload: Data}

我也不知道该如何制作

image/txt

哑剧类型。我可能会使用

application/octet-stream

存档。

无论如何，请求的构建可能如下：

/// Create request.////// - Parameters:///   - url:     The URL to where the post will be sent.///   - id:      The identifier of the entry///   - uuid:    The UUID of the entry///   - text:    The text.///   - title:   The title.///   - blogAttributedText: The attributed text of the blog entry.///   - image:   The `UIImage` of the image to be included.////// - Returns: The `URLRequest` that was createdfunc createRequest(url: URL, id: String, uuid: String, text: String, title: String, blogAttributedText: NSAttributedString, image: UIImage) -> URLRequest {    let parameters = [        "id" : id,        "uuid" : uuid,        "Text" : text,     // I find it curious to see uppercase field names (I'd use lowercase for consistency's sake, but use whatever your PHP is looking for)        "Title" : title    ]    let boundary = "Boundary-(NSUUID().uuidString)"    var request = URLRequest(url: url)    request.httpMethod = "POST"    request.setValue("multipart/form-data; boundary=(boundary)", forHTTPHeaderField: "Content-Type")    request.setValue("application/json", forHTTPHeaderField: "Accept")  // adjust if your response is not JSON    // use whatever field name your PHP is looking for the image; I used `image`    let imageData = UIImageJPEGRepresentation(image, 0.5)!    let imagePayload = FilePayload(fieldname: "image", filename: "image.jpg", mimetype: "image/jpeg", payload: imageData)    // again, use whatever field name your PHP is looking for the image; I used `blog`    let blogData = NSKeyedArchiver.archivedData(withRootObject: blogAttributedText)    let blogPayload = FilePayload(fieldname: "blog", filename: "blog.archive", mimetype: "application/octet-stream", payload: blogData)    request.httpBody = createBody(with: parameters, files: [imagePayload, blogPayload], boundary: boundary)    return request}/// Create body of the multipart/form-data request.////// - Parameters:///   - parameters: The optional dictionary containing keys and values to be passed to web service.///   - files:      The list of files to be included in the request.///   - boundary:   The `multipart/form-data` boundary////// - Returns: The `Data` of the body of the request.private func createBody(with parameters: [String: String]?, files: [FilePayload], boundary: String) -> Data {    var body = Data()    if parameters != nil {        for (key, value) in parameters! { body.append("--(boundary)rn") body.append("Content-Disposition: form-data; name="(key)"rnrn") body.append("(value)rn")        }    }    for file in files {        body.append("--(boundary)rn")        body.append("Content-Disposition: form-data; name="(file.fieldname)"; filename="(file.filename)"rn")        body.append("Content-Type: (file.mimetype)rnrn")        body.append(file.payload)        body.append("rn")    }    body.append("--(boundary)--rn")    return body}/// Create boundary string for multipart/form-data request////// - returns: The boundary string that consists of "Boundary-" followed by a UUID string.private func generateBoundaryString() -> String {    return "Boundary-(NSUUID().uuidString)"}

哪里

extension Data {    /// Append string to Data    ///    /// Rather than littering my pre with calls to `dataUsingEncoding` to convert strings to `Data`, and then add that data to the `Data`, this wraps it in a nice convenient little `Data` extension. This converts using UTF-8.    ///    /// - parameter string:       The string to be added to the mutable `Data`.    mutating func append(_ string: String) {        if let data = string.data(using: .utf8) { append(data)        }    }}

显然，这是Swift 3代码，因此我删除了

NSMutableData

参考。