通过Swift 3和Alamofire 4上传带有JSON和自定义标题的照片/文件 iOS | 迅速

Question

我需要使用Image文件和JSON调用Multipart请求.

我试过这个,但仍然得到错误.

 // define parameters
  let parameters = [
    "hometown": "yalikavak",
    "living": "istanbul"
  ]

Alamofire.upload(multipartFormData: { multipartFormData in
    if let imageData = UIImageJPEGRepresentation(image, 1) {
      multipartFormData.append(imageData, withName: "file", fileName: "file.png", mimeType: "image/png")
    }

    for (key, value) in parameters {
      multipartFormData.append((value?.data(using: .utf8))!, withName: key)
    }}, to: "upload_url", method: .post, headers: ["Authorization": "auth_token"],
        encodingCompletion: { encodingResult in
          switch encodingResult {
          case .success(let upload, _, _):
            upload.response { [weak self] response in
              guard let strongSelf = self else {
                return
              }
              debugPrint(response)
            }
          case .failure(let encodingError):
            print("error:\(encodingError)")
          }
  })
}

如何发送JSON？

Answer 1

尝试使用此代码在单个请求中上传多个图像，此代码已经可以工作。

     // For Pass Valid Parameters & number of Images in Array in Image Upload Function
     var dicImgData : NSMutableDictionary? = NSMutableDictionary()

     if let img = UIImage(named: "Your Image") {
         if let data:Data = UIImagePNGRepresentation(img) {
             var imageData : NSData = data
             dicImgData! .setObject(imageData, forKey: "data" as NSCopying)
             dicImgData! .setObject("file", forKey: "name" as NSCopying)
             dicImgData! .setObject("file.png", forKey: "fileName" as NSCopying)
             dicImgData! .setObject("image/png", forKey: "type" as NSCopying)

             let dicParameter = [
                 "hometown": "yalikavak",
                 "living": "istanbul"
             ]

             self.uploadImage(url: "Your URL", Parameter: dicParameter, Images: [dicImgData])
         }
    }

上传功能

    func uploadImage (url: String, Parameter param : NSDictionary, Images arrImage: NSArray) -> Void
    {
        var requestURL : String! = url
        let headers = [
            "Authorization": "Basic QWxhZGRpbjpvcGVuIHNlc2FtZQ==",
            "Accept": "application/json",
            ]

        print("---------------------")
        print("Request URL :- \(requestURL)")
        print("---------------------")

        Alamofire.upload(multipartFormData: { (data) in

            for (key, value) in param {
                data.append((value as! String).data(using: .utf8)!, withName: key as! String)
            }

            for imageInfo in arrImage
            {
                var dicInfo : NSDictionary! = imageInfo as! NSDictionary
                data.append(dicInfo["data"] as! Data, withName: dicInfo["name"] as! String, fileName: dicInfo["fileName"] as! String, mimeType: dicInfo["type"] as! String)
                dicInfo = nil
            }

        }, to: requestURL, method: .post , headers:nil, encodingCompletion: { (encodeResult) in
            switch encodeResult {
            case .success(let upload, _, _):

                upload.responseJSON(completionHandler: { (response) in

                    switch response.result
                    {
                    case .success(let responseJSON):
                        guard let dicResponse = responseJSON as? NSDictionary else{
                            return
                        }

                        print("Response : \((dicResponse))")

                    case .failure(let error):

                        print(error)

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