ios - 如何使用 Alamofire 多部分上传多张图片？

Question

我无法使用 Alamofire 以多部分方式上传多张图片。谁能帮我？提前致谢!!

有关更多详细信息，我正在使用此代码创建图像数据的正文部分:

func imageArrayToNSData(array: [UIImage],boundary:String) -> NSData {
    let body = NSMutableData()
    var i = 0;
    for image in array{
        let filename = "image\(i).jpg"
        let data = UIImageJPEGRepresentation(image,0.8);
        let mimetype = "image/jpeg"
        let key = "product_images"
        body.appendData("--\(boundary)\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
        body.appendData("--\(boundary)\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
        body.appendData("Content-Disposition: form-data; name=\"\(key)\"; filename=\"\(filename)\"\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
        body.appendData("Content-Type: \(mimetype)\r\n\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
        body.appendData(data!)
        body.appendData("\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
        i += 1
    }

    body.appendData("--\(boundary)--\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
    return body
}

上传我正在使用:

        Alamofire.upload(.POST, EDIT_PRODUCT_URL, headers: ["Accept": "application/json","Content-Type":"application/json"], multipartFormData: { (formData) in

        if productImages.count>0{
            let boundary = generateBoundaryString()
            let imageData = CommonClass.imageArrayToNSData(productImages,boundary: boundary)
            formData.appendBodyPart(data: imageData, name: "product_images", mimeType: "image/jpeg")
        }

        for (key, value) in params {
            if value is [String]{
                let data = CommonClass.stringArrayToNSData(value as! [String])
                formData.appendBodyPart(data:data , name: key)
            }else if value is String{
                formData.appendBodyPart(data: value.dataUsingEncoding(NSUTF8StringEncoding)!, name: key)
            }else if let v = value as? Bool{
                var bValue = v
                let d = NSData(bytes: &bValue, length: sizeof(Bool))
                formData.appendBodyPart(data: d, name: key)
            }
        }

    }) { (encodingResult) in
        switch encodingResult {
        case .Success(let upload, _, _):
            KVNProgress.showProgress(CGFloat(0), status:"0% Sent")
            upload.progress { bytesWritten, totalBytesWritten, totalBytesExpectedToWrite in
                // This closure is NOT called on the main queue for performance
                // reasons. To update your ui, dispatch to the main queue.
                dispatch_async(dispatch_get_main_queue()) {
                    let prg = Int((CGFloat(totalBytesWritten)*100)/CGFloat(totalBytesExpectedToWrite))
                    if prg == 100{
                        KVNProgress.showSuccessWithStatus("Created")
                    }
                    KVNProgress.updateStatus("\(prg)% Sent")
                    KVNProgress.updateProgress(CGFloat(Float(prg)/100.0), animated: true)
                }
            }
            upload.responseJSON { response in
                CommonClass.hideLoader()
                switch response.result {
                case .Success:
                    if let value = response.result.value {
                        let json = JSON(value)
                        print_debug("edit Product JSON is\n\(json)");  
                        completionBlock(json)
                    }else{
                        completionBlock(nil)
                    }
                case .Failure(let error):
                    print_debug(error.description)
                    showErrorWithMessage("Oops! Couldn't connect to server!")
                    completionBlock(nil)
                }
            }

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

任何人都可以让我建议使用 Alamofire 分段上传多个文件的方法吗？

Answer 1

在 Swift 3 及以上只需在“[]”后附加图像键标识符，即可将其视为图像数组。

Alamofire.upload(multipartFormData: { multipartFormData in
            // import image to request
            for imageData in imagesData {
                multipartFormData.append(imageData, withName: "\(imageParamName)[]", fileName: "\(Date().timeIntervalSince1970).jpeg", mimeType: "image/jpeg")
            }
            for (key, value) in parameters {
                multipartFormData.append(value.data(using: String.Encoding.utf8)!, withName: key)
            }
        }, to: urlString,

            encodingCompletion: { encodingResult in
                switch encodingResult {
                case .success(let upload, _, _):
                    upload.responseJSON { response in

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

        })