ios - AF网络 : Send image from file

Question

我正在尝试发送包含图像的多部分发布请求。以下代码工作正常:

 manager.POST( apiUrl + "/location/add",
        parameters: parameters,
        constructingBodyWithBlock: { (formData : AFMultipartFormData!) -> Void in
          //  formData.appendPartWithFileURL(NSURL(string: location.imagePath!), name: "image", error: nil)},
            formData.appendPartWithFileData(img, name: imgParam, fileName: "randomimagename.jpg", mimeType: "image/jpeg")},
        success: { (operation: AFHTTPRequestOperation!,responseObject: AnyObject!) in
            println("JSON: " + responseObject.description)
            var dict = responseObject as NSDictionary
            let json = JSONValue(dict)

            var message = ""
            if let msg = json["message"].string {message = msg}
            var success = false
            if let s = json["success"].bool {
                callback(success: success, msg: message)
            }
        },
        failure: { (operation: AFHTTPRequestOperation!,error: NSError!) in
            println("Error: " + error.localizedDescription)
            var apiError = ApiError()
            apiError.noConnection = true
            errorCallback(apiError: apiError)
    })

我想使用 appendPartWithFileURL 而不是 appendPartWithFileData。如果我用上面代码中注释掉的行替换第 5 行，我会得到以下编译器错误:

Extra argument 'constructingBodyWithBlock' in call

有人知道怎么解决吗？

---

编辑: 找到了一个(非常非常非常奇怪的)解决方案。替换行

formData.appendPartWithFileURL(NSURL(string: location.imagePath!), name: "image", error: nil)},

与

var temp = formData.appendPartWithFileURL(NSURL(string: location.imagePath!), name: "image", error: nil)},

除了添加 var temp = 之外，我没有做任何更改。我不知道为什么会这样，但确实如此。似乎是一个奇怪的错误。

Answer 1

如果您还没有解决这个问题，请尝试将 location.imagePath 转换为 String。

我遇到了同样的问题，直到我在下面的代码中添加了 as String:

func uploadFile(file: NSData, url: String, formData: NSDictionary, parameters: NSDictionary, completion: AnyObject -> Void, failure: NSError -> Void) {
    operationManager.requestSerializer = AFJSONRequestSerializer() as AFHTTPRequestSerializer

    if operationManager.reachabilityManager.networkReachabilityStatus != .NotReachable {
        operationManager.POST(url, parameters: parameters, constructingBodyWithBlock: { (data) in
            data.appendPartWithFileData(file, name: formData["fileName"] as String, fileName: formData["fileName"] as String, mimeType: formData["mimeType"] as String)
        }, success: { (operation, responseObject) in
            completion(responseObject)
        }, failure: { (operation, error) in
            failure(error)
        })
    } else {
        showReachabilityAlert()
    }
}

希望对您有所帮助。