ios - 将图像文件名修补到服务器 Swift 中

Question

基本上是这个配置文件图像，当我从库中添加图片并尝试修补图像文件名并将其保存在服务器上但我收到此错误：“在展开可选值时意外发现 nil：文件”在下面的行中我签名：我不知道为什么会这样：

这是我尝试在服务器上修补图像文件名的功能：

func changeImage(parameters : [[String: Any]]) {
    var semaphore = DispatchSemaphore (value: 0)

   

    let boundary = "Boundary-\(UUID().uuidString)"
    var body = ""
    var error: Error? = nil
    for param in parameters {
      if param["disabled"] == nil {
        let paramName = param["key"]!
        body += "--\(boundary)\r\n"
        body += "Content-Disposition:form-data; name=\"\(paramName)\""
        if param["contentType"] != nil {
          body += "\r\nContent-Type: \(param["contentType"] as! String)"
        }
        let paramType = param["type"] as! String
        if paramType == "text" {
          let paramValue = param["value"] as! String
          body += "\r\n\r\n\(paramValue)\r\n"
        } else {
          let paramSrc = param["src"] as! String

            let fileData = try? NSData(contentsOfFile: paramSrc,options: [])
          as Data
// @@@@@@ this the line that got me error on debug area 
            let fileContent = String(data: fileData! as Data, encoding: .utf8)
          body += "; filename=\"\(paramSrc)\"\r\n"
            + "Content-Type: \"content-type header\"\r\n\r\n\(fileContent)\r\n"
        }
      }
    }
    body += "--\(boundary)--\r\n";
    let postData = body.data(using: .utf8)

    var request = URLRequest(url: URL(string: "https://api.offernews.co/api/user")!,timeoutInterval: Double.infinity)
    request.addValue("baerar \(profileKeychain["token"]!)", forHTTPHeaderField: "Authorization")
    request.addValue("multipart/form-data; boundary=\(boundary)", forHTTPHeaderField: "Content-Type")

    request.httpMethod = "PATCH"
    request.httpBody = postData

    let task = URLSession.shared.dataTask(with: request) { data, response, error in
      guard let data = data else {
        print(" this is error that you need to know  \(String(describing: error))")
        semaphore.signal()
        return
      }
      print(" this the data that you need to complete  \(String(data: data, encoding: .utf8)!)")
      semaphore.signal()
    }

    task.resume()
    semaphore.wait()
}

当我调用顶部函数时，这也是我的选择器图像：

 func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
    
    if let image = info[.editedImage] as? UIImage {
        profileImage.image = image
        
        if let imageURL = info[.imageURL] as? URL {
           // let result = PHAsset.fetchAssets(withALAssetURLs: [imageURL], options: nil)
            let asset = imageURL.description
            if asset.contains("file://") {
                let changableURl = asset.replacingOccurrences(of: "file://", with: "")
                print(changableURl)
                let parameters = [
                         [
                           "key": "image",
                           "src": "\(changableURl)",
                           "type": "file"
                         ]] as [[String : Any]]
               changeImage(parameters: parameters)
            }
            
            print("this is the asset \(asset)")
           // print(asset?.value(forKey: "filename"))

        }
     // print("  this is url of image :   \(info.description) ")
        print("this isssssssssss \(info.values.description)")
        if (info[.mediaURL] != nil) {
                       print(" this is provided for you \(String(describing: info[.mediaURL]))")
                   }
        
        if  saveImage(image: image) == true {
            
            print("this successeful photo image")
            
        }
    } else if let image = info[.originalImage] as? UIImage {
        print("   this is a test   \(info.values.description)")
        if (info[.mediaURL] != nil) {
            print(" this is provided for you \(String(describing: info[.mediaURL]))")
        }

        print("  this is url of image :   \(info.description) ")

        profileImage.image = image
        
    }
    dismiss(animated: true, completion: nil)
         
}    

如果您有任何想法，请分享它，感谢您花时间寻求帮助。

标签： iosswiftpatch