使用Alamofire将图像上传到服务器

Question

这是我想用Alamofire将图像上传到服务器的代码,它不是错误但它无法将图像推送到服务器.我该怎么办 ？预先感谢.

let url = URL(string: urlString)!
var urlRequest = URLRequest(url: url)
urlRequest.httpMethod = "POST"

let parameters = ["name": rname]

do {
    urlRequest.httpBody = try JSONSerialization.data(withJSONObject: parameters, options: [])
} catch {
    print(error)
}

urlRequest.setValue("application/json", forHTTPHeaderField: "Content-Type")
    let image = UIImage.init(named: "myImage")
    let imgData = UIImageJPEGRepresentation(image!, 0.2)!


Alamofire.upload(multipartFormData: { MultipartFormData in

        MultipartFormData.append(imgData, withName: "fileset", fileName: "name", mimeType: "image/jpg")


    },with: urlRequest,encodingCompletion: { encodingResult in

        switch encodingResult {

        case .success(let upload, _, _):

            upload.responseJSON { response in

                if let info = response.result.value as? Dictionary<String, AnyObject> {

                    if let links = info["links"] as? Dictionary<String, AnyObject> {

                        if let imgLink = links["image_link"] as? String {
                            print("LINK: \(imgLink)")
                        }
                    }
                }

            } case .failure(let error):
                print(error)
        }
    })

Answer 1

试试下面的代码

 let image = UIImage.init(named: "myImage")
 let imgData = UIImageJPEGRepresentation(image!, 0.2)!

 let parameters = ["name": rname] //Optional for extra parameter

Alamofire.upload(multipartFormData: { multipartFormData in
        multipartFormData.append(imgData, withName: "fileset",fileName: "file.jpg", mimeType: "image/jpg")
        for (key, value) in parameters {
                multipartFormData.append(value.data(using: String.Encoding.utf8)!, withName: key)
            } //Optional for extra parameters
    },
to:"mysite/upload.php")
{ (result) in
    switch result {
    case .success(let upload, _, _):

        upload.uploadProgress(closure: { (progress) in
            print("Upload Progress: \(progress.fractionCompleted)")
        })

        upload.responseJSON { response in
             print(response.result.value)  
        }

    case .failure(let encodingError):
        print(encodingError)  
    }
}

Answer 2

let params: Parameters = ["name": "abcd" "gender": "Male"]
Alamofire.upload(multipartFormData:
    {
        (multipartFormData) in
        multipartFormData.append(UIImageJPEGRepresentation(self.yourimageView.image!, 0.1)!, withName: "image", fileName: "file.jpeg", mimeType: "image/jpeg")
        for (key, value) in params
        {
            multipartFormData.append((value as AnyObject).data(using: String.Encoding.utf8.rawValue)!, withName: key)
        }
}, to:yourUrl,headers:nil)
{ (result) in
    switch result {
    case .success(let upload,_,_ ):
        upload.uploadProgress(closure: { (progress) in
            //Print progress
        })
        upload.responseJSON
            { response in
                //print response.result
                if response.result.value != nil
                {
                    let dict :NSDictionary = response.result.value! as! NSDictionary
                    let status = dict.value(forKey: "status")as! String
                    if status=="1"
                    {  
                      print("DATA UPLOAD SUCCESSFULLY")
                    }
                }
        }                
    case .failure(let encodingError):
        break
    }   
}

Answer 3

目前唯一为我工作的人：

let headers: HTTPHeaders = [
            /* "Authorization": "your_access_token",  in case you need authorization header */
            "Content-type": "multipart/form-data"
        ]


            AF.upload(
                multipartFormData: { multipartFormData in
                    multipartFormData.append(imageOrVideo!.jpegData(compressionQuality: 0.5)!, withName: "upload_data" , fileName: "file.jpeg", mimeType: "image/jpeg")
            },
                to: "http://35.227.31.145/new.php", method: .post , headers: headers)
                .response { resp in
                    print(resp)


            }

Answer 4

需要指定name, fileName, mimeType，这些对很多服务器都很重要

func upload(image: UIImage, completion: (URL?) -> Void) {
    guard let data = UIImageJPEGRepresentation(image, 0.9) else {
      return
    }

    Alamofire.upload(multipartFormData: { (form) in
      form.append(data, withName: "file", fileName: "file.jpg", mimeType: "image/jpg")
    }, to: "https://yourawesomebackend.com", encodingCompletion: { result in
      switch result {
      case .success(let upload, _, _):
        upload.responseString { response in
          print(response.value)
        }
      case .failure(let encodingError):
        print(encodingError)
      }
    })
  }

Answer 5

将代码更新为Swift 5。

快速5中的这一行发生了变化

let imageData = UIImageJPEGRepresentation(image!, 0.2)!

喜欢这个

let imageData = image.jpegData(compressionQuality: 0.50)

整个代码上传图片

let param: [String:Any] = ["your_parameters"]
var image = UIImage()
image = UIImage(named: "edit.png")!
let imageData = image.jpegData(compressionQuality: 0.50)
print(image, imageData!)

Alamofire.upload(multipartFormData: { (multipartFormData) in
        multipartFormData.append(imageData!, withName: "file", fileName: "swift_file.png", mimeType: "image/png")
        for (key, value) in param {
            multipartFormData.append("\(value)".data(using: String.Encoding.utf8)!, withName: key)
        }
    }, to: "your_url")
    { (result) in
        switch result {
        case .success(let upload, _, _):

            upload.uploadProgress(closure: { (progress) in
                //Print progress
                print("uploading \(progress)")

            })

            upload.responseJSON { response in
                //print response.result

            }
        case .failure( _): break
            //print encodingError.description
        }
    }
}