使用 Alamofire 将图像上传到 API 服务器

Question

我有一个关于使用 Alamofire 将图像上传到 API 服务器的问题。

基本网址：http://vietnamtravelguide-app.com/quangnam/api_inquangnam/tips/create?user_id=""&token="" 3个参数：location_id、content、imageName

邮递员发帖没问题

我的代码：

Alamofire.upload(multipartFormData: { multipartFormData in
            multipartFormData.append(image, withName: "imageName", fileName: "swift_file.jpeg", mimeType: "image/jpeg")

        }, with: path, encodingCompletion: {encodingResult in
            switch encodingResult {
            case .success(let upload, _, _):
            upload.responseJSON { response in
                print(response.result)
            switch response.result {
            case .success:
                let json = JSON(response.result.value!)
                if(delegate != nil) {
                    delegate!.didReceiveResult(json,basePath: basePath)
                }
            case .failure(let error):
                print(error)
            }                        }
            case .failure(let encodingError):
                print(encodingError)
            }

            })

带有图像（来自参数转换的图像作为数据）。当我调试它时，我得到了 response.result 返回失败

Answer 1

您没有上传剩余的两个参数content 和location_id。

试试这个，看看结果。我也在这里使用了SwiftyJSON。

这是我用于所有 API 处理的 APIManager 类。

import Alamofire
import SwiftyJSON

class APIManager: NSObject {

    class func apiMultipart(serviceName:String,parameters: [String:Any]?, completionHandler: @escaping (JSON?, NSError?) -> ()) {

        Alamofire.upload(multipartFormData: { (multipartFormData:MultipartFormData) in
            for (key, value) in parameters! {
                if key == "imageName" {
                    multipartFormData.append(
                        value as! Data,
                        withName: key,
                        fileName: "swift_file.jpg",
                        mimeType: "image/jpg"
                    )
                } else {
                    //Data other than image
                    multipartFormData.append((value as! String).data(using: .utf8)!, withName: key)
                }
            }
        }, usingThreshold: 1, to: serviceName, method: .post, headers: ["yourHeaderKey":"yourHeaderValue"]) { (encodingResult:SessionManager.MultipartFormDataEncodingResult) in

            switch encodingResult {
            case .success(let upload, _, _):
                upload.responseJSON { response in
                    if response.result.error != nil {
                        completionHandler(nil,response.result.error as NSError?)
                        return
                    }
                    print(response.result.value!)
                    if let data = response.result.value {
                        let json = JSON(data)
                        completionHandler(json,nil)
                    }
                }
                break

            case .failure(let encodingError):
                print(encodingError)
                completionHandler(nil,encodingError as NSError?)
                break
            }
        }
    }
}

如果您没有任何标题，则可以将字段保留为 ["":""] 代替您的 ["yourHeaderKey":"yourHeaderValue"]

现在为了调用，我刚刚在控制器中形成了参数。

var params = [String:AnyObject]()
params["content"] = "something" as AnyObject?
params["location_id"] = "201" as AnyObject?

// Grab your image from some variable or imageView. Here self.profileImage is a UIImage object
if let profileImageData = self.profileImage {
    if let imageData = UIImageJPEGRepresentation(profileImageData, 0.5) {
        params["imageName"] = imageData as AnyObject?
        APIManager.apiMultipart(serviceName: "http://yourAPIURL", parameters: params, completionHandler: { (response:JSON?, error:NSError?) in
        //Handle response       
        })
    } else {
       print("Image problem")
    }
}