如何使用“表单数据"进行 alamofire 发布请求参数 [英] How to make alamofire post request with "form-data" parameters

问题描述

如何使用带有如下参数的 alamofire 快速发出 post 请求(来自邮递员的截图)图像是文件类型，标题是文本类型

How to make post request in swift using alamofire with parameters as below(screenshot from postman)image is file-type, title is text-type

我正在尝试这样:

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)
                        }
    })

但是我遇到了错误:[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

and (this is weird) debugger goes into .success but when I log response there is error from api

推荐答案

尝试更改

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

到

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

如果您收到如下警告:

第 2878 行 [boringssl_session_write] SSL_ERROR_SYSCALL(5):操作库外部失败

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

你可以简单地忽略它.这只是意味着 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 simply ignore it. This simply means that an operation on the TLS connection failed because the TLS was closed via the close_notify alert. This sort of thing is not a problem in and of itself.

您可以在 Xcode 中禁用操作系统日志记录以使其消失.打开项目窗口后，转到 Project -> Scheme -> Edit Scheme... 并将OS_ACTIVITY_MODE"添加到环境变量"部分并将其值设置为禁用".当您重新运行应用程序时，这些警告现在不应出现.

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.

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