Swift 4 Alamofire分段上传无法正常工作 [英] Swift 4 Alamofire multipart upload not working

问题描述

我正在使用alamofire 4.7和Swift 4

I am using alamofire 4.7 and swift 4

我需要将图像和json上传到服务器.

I need to upload image and json to server.

我正在使用下面的代码上传bu我遇到了结果失败，但是数据正在服务器中插入但没有得到响应，显示一些序列化错误，就像这样

I am using the following code below for uploading bu I am getting result failure but data is inserting in server but not getting response, showing some serialization error as something like this

▿ result : FAILURE: responseSerializationFailed(Alamofire.AFError.ResponseSerializationFailureReason.jsonSerializationFailed(Error Domain=NSCocoaErrorDomain Code=3840 "Invalid value around character 0." UserInfo={NSDebugDescription=Invalid value around character 0.}))
    ▿ failure : AFError
      ▿ responseSerializationFailed : ResponseSerializationFailureReason
  ▿ timeline : Timeline: { "Request Start Time": 548835779.066, "Initial Response Time": 548835779.074, "Request Completed Time": 548835779.127, "Serialization Completed Time": 548835779.127, "Latency": 0.008 secs, "Request Duration": 0.061 secs, "Serialization Duration": 0.000 secs, "Total Duration": 0.061 secs }
    - requestStartTime : 548835779.06617701
    - initialResponseTime : 548835779.07390201
    - requestCompletedTime : 548835779.12704694
    - serializationCompletedTime : 548835779.12748504
    - latency : 0.0077250003814697266
    - requestDuration : 0.060869932174682617
    - serializationDuration : 0.00043809413909912109
    - totalDuration : 0.061308026313781738
  ▿ _metrics : Optional<AnyObject>

================================================ ==================

=================================================================

        let auth : String = MitraModal.sharedInstance().getBasicAuthenticationString()
    let headers = ["Authorization": auth, "Content-type": "multipart/form-data"]

    Alamofire.upload(multipartFormData: { (multipartFormData) in

        multipartFormData.append("\(parameters)".data(using: String.Encoding.utf8)!, withName: "data" as String)

        if (!imageArray.isEmpty) {

            for item in imageArray {
                multipartFormData.append(item!, withName: "file", fileName: "image.png", mimeType: "image/png")
            }
        }

    }, usingThreshold: UInt64.init(), to: url, method: .post, headers: headers) { (result) in
        switch result{
        case .success(let upload, _, _):
            upload.responseJSON { response in

                if let JSON = response.result.value
                {
                    print("JSON: \(JSON)")
                    onCompletion?(JSON as? JSON)

                    print("Successfully uploaded")
                }

                if let err = response.error {
                    onError?(err)
                    return
                }
                onCompletion?(nil)
            }
        case .failure(let error):
            print("Error in upload: \(error.localizedDescription)")
            onError?(error)
        }
    }
}

有人帮忙吗?

推荐答案

由于我是新手，但几天前，我在上传图片时遇到了同样的问题，必须使用 file 来接受图片"，所以该标签包含 withName:"file" .

As i'm newbie, but Few days ago, i had same problem while uploading image, you must have to accept image by using file on the server side because of your image tag consist withName: "file" .

func AlamofireUploadImages(){

    let url : String = URL_IP+"/ZameenServer/api/addNewProperty.php"
    for img in HOUSEImages{
        let data  = UIImageJPEGRepresentation(img, 0.2)!
        ImagesData.append(data)
    }

    let parameters = [
        "userId"                : "5",
        "unit"                  : "6789"
    ] //Optional for extra parameter

    Alamofire.upload(multipartFormData: { multipartFormData in
        for imageData in self.ImagesData {
            multipartFormData.append(imageData, withName: "file[]", fileName: self.randomString(length: 5)+".jpeg", mimeType: "image/jpeg")
        }
        for (key, value) in parameters {
            multipartFormData.append((value?.data(using: String.Encoding.utf8)!)!, withName: key)
        } //Optional for extra parameters
    },
                     to:url)
    { (result) in

        switch result {
        case .success(let upload, _, _):

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

            upload.responseJSON
                {
                    response in
                    print("Response :\(response.result.value)")
            }

        case .failure(let encodingError):
            print("no Error :\(encodingError)")
        }
    }

}

注意:由于我正在上传图像数组，因此要上传多张图像，请使用 withName:"file []" ；对于单个图像，请使用 withName: 文件"

NOTE: As i'm uploading array of images so for uploading multile images use withName: "file[]" or for single image use withName: "file"

可能对您有帮助.

谢谢

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