swift - 如何使用 "form-data"参数发出 alamofire post 请求

Question

How to make post request in swift using alamofire with parameters below (screenshot from postman) 图片是文件类型，标题是文本类型

我正在尝试这样的事情:

let headers = [
        "Content-Type": "application/form-data",
        "X-App-Token": user.token!
    ]
    Alamofire.upload(multipartFormData:{ multipartFormData in
        multipartFormData.append(UIImagePNGRepresentation(imgToSend)!, withName: "image")
        multipartFormData.append(titleToSend.data(using: .utf8)!, withName: "title")},
                     usingThreshold:UInt64.init(),
                     to: url!,
                     method:.post,
                     headers:headers,
                     encodingCompletion: { encodingResult in
                        switch encodingResult {
                        case .success(let upload, _, _):
                            upload.responseJSON { response in
                                debugPrint(response)
                            }
                        case .failure(let encodingError):
                            print(encodingError)
                        }
    })

但是我得到了错误:[BoringSSL] 函数 boringssl_session_errorlog:第 2868 行 [boringssl_session_write] SSL_ERROR_SYSCALL(5):库外部操作失败

并且(这很奇怪)调试器进入 .success 但是当我记录响应时 api 出现错误

Answer 1

尝试改变

multipartFormData.append(UIImagePNGRepresentation(imgToSend)‌ !, withName: "image")

到

multipartFormData.append(UIImagePNGRepresentation(imgToSend)‌ !, withName: "image", 文件名: "sample.png", mimeType: "image/png")

如果您收到如下警告:

line 2878 [boringssl_session_write] SSL_ERROR_SYSCALL(5): operation failed externally to the library

你可以忽略它。这仅表示 TLS 连接上的操作失败，因为 TLS 已通过 close_notify 警报关闭。这种事情本身不是问题。

You can disable OS logging in Xcode to make them go away. With your project window open, go to Project -> Scheme -> Edit Scheme... and add "OS_ACTIVITY_MODE" to the Environment Variables section and set its value to "disable". When you rerun the app those warnings should now not appear.