使用Alamofire上载图片的问题（有图片作为参数） [英] Issue with uploading an image using Alamofire(has image as a parameter)

问题描述

这就是我尝试使用Alamofire上传图像的方式。但是程序崩溃，提示类似... 'NSInvalidArgumentException'，原因：'-[____ SwiftTypePreservingNSNumber dataUsingEncoding：]：无法识别的选择器已发送至实例... 我无法找出确切原因。这就是我发出请求的方式...

This is how I am trying to upload an image using Alamofire. But the program crashes saying something like...'NSInvalidArgumentException', reason: '-[_SwiftTypePreservingNSNumber dataUsingEncoding:]: unrecognized selector sent to instance... I'm not able figure the exact reason.This is how I'm making the request...

    for i in 1...(imageArray.count) {
        for img in imageArray {

            let url = "http://myapp.com/a/images_upload"
            let headers = [ "Content-Type":"application/x-www-form-urlencoded"]

  let imageData: Data = (UIImageJPEGRepresentation(img, 0.6) as Data?)!
            print(imageData)

            let parameters: [String: Any]  = [
                    "access_token":  commonVarForAccessToken,
                    "seller_id": idForNewOldUser, 
                    "product_id": self.productId,
                    "is_default": "1",
                    "sequence": i,
                    "image": imageData  ]

            Alamofire.upload(multipartFormData: { (multipartFormData) in
                print(parameters)

                multipartFormData.append(imageData as Data, withName: "home-\(self.index)", fileName: "home-\(self.index)", mimeType: "image/jpeg")

                for (key, value) in parameters {
                    print(key,value)

                    multipartFormData.append((value as AnyObject).data(using: String.Encoding.utf8.rawValue)!, withName: key)

                }
            }, to:url)
            { (result) in
                switch result {
                case .success(let upload, _, _):
                    upload.uploadProgress(closure: { (Progress) in
                        //Print progress
                    })
                    upload.responseJSON { response in

                        print(response.request)  // original URL request

                         if let JSON = response.result.value {
                            print("JSON: \(JSON)")
                        }

                    }
                case .failure(let encodingError):

                    print(encodingError)
                    break
                }}}}

希望有人可以帮忙...谢谢...：）

Hope somebody can help...Thanks...:)

推荐答案

尝试使用此代码。它对我有用。 p>

Try to use this code.It's working for me.

let para: [String: Any]

Alamofire.upload(multipartFormData: {(multipartFormData) in

for i in 0..<uploadImages.count{         multipartFormData.append(UIImageJPEGRepresentation(uploadImages[i], 0.3)!, withName: "image\(i)", fileName: "swift_file\(i).jpeg", mimeType: "image/jpg")             
        }

        for (key, value ) in para {
            multipartFormData.append((value).data(using: String.Encoding.utf8)!, withName: key)
        }
    }, to: apiURL)
    { (result) in
        switch result {
        case .success(let upload, _,_ ):

            upload.uploadProgress(closure: { (progress) in
                UILabel().text = "\((progress.fractionCompleted * 100)) %"
                print (progress.fractionCompleted * 100)
            })


            upload.responseJSON { response in

                guard ((response.result.value) != nil) else{
            print(response.result.error!.localizedDescription)
                    return
                }

这篇关于使用Alamofire上载图片的问题（有图片作为参数）的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！