如何使用Alamofire上传多张图片

Question

这是我的 CURL 的样子：

curl -X POST "http://localhost:2202/api/project" -H "accept: aplication/json" -H "key: x" -H "Content-Type: multipart/form-data" -F "project={"title":"Test Title","description":"Test description for new project","priority":false,"category_id":1,"location_id":1}" -F "images[]=@fileName.jpg;type=image/jpeg"

文本上传使用以下代码：

 let parametersText = ["project":["title":requestName.text!,"description":requestDescription.text!,"priority":emergencySwitch.isOn,"category_id":selectedCategoryID,"location_id":selectedLocationID]]
 var selectedImagesForUpload = [Image]()
        Alamofire.upload(multipartFormData: { multipartFormData in
            // Texts
            for (key, value) in parametersText{
                do{
                    let data = try JSONSerialization.data(withJSONObject: value, options: .prettyPrinted)
                    multipartFormData.append(data, withName: key)
                }catch(let err){
                    print(err.localizedDescription)
                }
            }
        },usingThreshold:UInt64.init(),
          to: url,
          method: .post,
          encodingCompletion: { encodingResult in
            switch encodingResult {
            case .success(let upload, _, _):
                upload.responseJSON { response in
                    print(response.result.value)
                    sender.isLoading = false
                    self.showNotification(color: #colorLiteral(red: 0.1803921569, green: 0.8, blue: 0.4431372549, alpha: 1), title: "Success", icon: #imageLiteral(resourceName: "UploadSuccess"))
                }
            case .failure(let encodingError):
                print(encodingError)
            }})}

如何更改我的代码以使多张图片上传成为可能？

Answer 1

class func uploadImage(showloader : Bool,imgData : [Data],url : URL,parameters : [String : Any],success:@escaping (JSON) -> Void, failure:@escaping () -> Void ) {
    if Reachability()?.isReachable == true{
        if (showloader) {
            SVProgressHUD.show()
        }
        Alamofire.upload(multipartFormData: { multipartFormData in
            for imageData in imgData{
                multipartFormData.append(imageData, withName: "car_image_name[0]",fileName: "(NSDate().timeIntervalSince1970).jpg", mimeType: "image/jpg")
            }
            for (key, value) in parameters {
                multipartFormData.append((value as AnyObject).data(using: String.Encoding.utf8.rawValue)!, withName: key)
            }
        },
                         to: baseURL + url)
        { (result) in
            switch result {
            case .success(let upload, _, _):
                upload.uploadProgress(closure: { (progress) in
                    print("Upload Progress: (progress.fractionCompleted)")
                })
                upload.responseJSON { response in
                    guard let responseValue = response.result.value else {
                    if (showloader) {
                        SVProgressHUD.dismiss()
                    }
                    failure()
                     return
                    }
                    print(responseValue)
                    let responseJson = JSON(responseValue)
                    let status = CheckForSuccessApi(data: responseJson)
                    let resJson = JSON(response.result.value!)
                    switch status {
                        case true:
                            if (showloader) {
                                SVProgressHUD.dismiss()
                            }
                            success(resJson)
                        default:
                            print(responseJson.dictionaryObject!)
                            if let message = responseJson.dictionaryObject?[ApiKeys.result] as? NSDictionary{
                                DELEGATE.window?.rootViewController?.showAlertView(alertTitle: stringConstants.alerts.Error, msgString: message.value(forKey: ApiKeys.message) as! String)
                            }
                            if (showloader) {
                                SVProgressHUD.dismiss()
                            }
                            failure()
                    }
                }
            case .failure(let encodingError):
                print(encodingError)
                let error : Error = encodingError
                if (showloader) {
                    SVProgressHUD.dismiss()
                }
                failure()
            }
        }
    }else{
        //display no internet available message
        DELEGATE.window?.rootViewController?.showAlertView(alertTitle: stringConstants.alerts.NetworkError, msgString: stringConstants.alerts.NoInternetMsg)
    }
}

Answer 2

试试这个解决方案：

var headers = ["Content-Type" : "application/json"]    
headers["Authorization"] = "token"
var backgroundSessionManager: Alamofire.SessionManager
backgroundSessionManager.upload(multipartFormData: { (multipartFormData) in

for (_,image) in arrImage.enumerated()
{
    if image != nil
    {
        //Change file parameter
        multipartFormData.append(image!.jpegData(compressionQuality: 0.8)!, withName: imageKey, fileName: "image.jpg", mimeType: "image/jpeg")
        // multipartFormData.append(UIImageJPEGRepresentation(image!, 0.8)!, withName:  imageKey, fileName: "image.jpg", mimeType: "image/jpeg")
    }
}
// for multiple videos
if arrVideo != nil
{
    for (_,urll) in arrVideo!.enumerated()
    {
        multipartFormData.append(urll, withName: imageKey, fileName: "video.mp4", mimeType: "video/mp4")
    }
}
for (key, value) in parameter
{
    if value is String {
        multipartFormData.append((value as AnyObject).data(using: String.Encoding.utf8.rawValue)!, withName: key)
    }
    else if value is Bool{
        multipartFormData.append((value as AnyObject).description.data(using: String.Encoding(rawValue: String.Encoding.utf8.rawValue))!, withName: key)
    }
} }, to: "", headers: headers) { (result) in
// handle response
switch result{
// handle  response from server
case .success(let upload, _, _):
    upload.responseJSON { response in
        // handle result
    }
// handle failure such network etc...
case .failure(let encodingError):
    print(encodingError)
    // remove loader
} }

Answer 3

使用递归：-

let noOfImage = 5
var coutUpload = 0
func uploadData(){
    Alamofire.upload(multipartFormData: { multipartFormData in
    }, usingThreshold:UInt64.init(),
       to: uploadUrl,
       method: .post,
       headers: header,
       encodingCompletion: {(result) in
        switch result{
        case .success(let upload, _, _):
            upload.responseJSON(completionHandler: { (res) in
                if res.result.isSuccess{
                    if coutUpload == noOfImage{
                        //Uploaded All Images sucessfully
                    }else{
                        coutUpload += 1
                        uploadData()
                    }
                }else{
                    //ERROR SHOW
                }
            })
            break
        case .failure(let encodingError):
            print("the error is  : (encodingError.localizedDescription)")
            break
        }
    })
}