使用 Alamofire（多部分数据）上传带有额外参数的 .PDF 文件时出错

Posted 2023-02-24

【中文标题】使用 Alamofire（多部分数据）上传带有额外参数的 .PDF 文件时出错

【英文标题】：error uploading .PDF files with extra parameters using Alamofire (Multi Part Data)

【发布时间】：2020-03-03 13:17:53

【问题描述】：

我正在尝试使用 Alamofire 从 ios 应用程序上传 PDF，但我不断收到响应错误：

成功：

status = 400;

title = "Bad Request";

traceId = "0HLTUPOJDQ33R:00000001";

type = "https://tools.ietf.org/html/rfc7231#section-6.5.1";

尽管请求在邮递员中使用相同的参数工作，并且我正在使用此方法在其他应用程序中上传文件并且它工作正常，但我试图找出我的代码中的问题，因为我不能，这是我的代码

     static func uploadMultiPartData<T:Decodable>(endUrl: String, fileURL: URL, parameters: [String : Any]?, completion: ((_ result: Result<T>) -> Void)?) 

    let token = Helper.getUserDetails()["token"] as! String

    let auth = "Bearer \(token)"

       let headers: HTTPHeaders = [
           "Authorization" : auth,
           "Content-type": "multipart/form-data"
       ]
       var image:UIImage?
       var dataToBeSend:Data?
       Alamofire.upload(multipartFormData:  (multipartFormData) in
           if let parms=parameters
               for (key, value) in parms  
                   multipartFormData.append((value as! String).data(using: String.Encoding.utf8)!, withName: key as String)
               
           


           guard let fileData = try? Data(contentsOf: fileURL as URL) else 

               print("There was an error!")
               // return or break
               return
           

           let filename : String = fileURL.lastPathComponent
           let splitName:[String] = filename.components(separatedBy: ".")
           let name = splitName.first
           let filetype = splitName.last
           if filetype?.uppercased() != "PDF"
               image=UIImage(data: fileData)
               dataToBeSend = image!.jpegData(compressionQuality: 0.2)!
           else
               dataToBeSend=fileData
           

           if let data = dataToBeSend
               multipartFormData.append(data, withName: "\(name ?? "name")", fileName: "\(filename)", mimeType: "\(name ?? "name")/\(filetype ?? "jpg")")
           

       , usingThreshold:0, to: endUrl, method: .post, headers: headers)  (result) in
        print(result)
           switch result
           case .success(let upload, _, _):
               upload.responseJSON  response in
                   if let err = response.error
                       completion?(.failure(err))
                       return
                   
                   if let value = (try? JSONSerialization.jsonObject(with: response.data!, options: .allowFragments)) as? T 
                       completion?(.success(value))
                   
               
           case .failure(let error):
               print("Error in upload: \(error.localizedDescription)")
               completion?(.failure(error))
           
       
   

【参考方案1】：

这个错误是因为服务器配置发生了一些变化，所以任何人都想使用 alamofire 将文件或图像上传到服务器，这种方法效果很好