Question

我正在使用Playgrounds，并通过Podfile安装了Alamofire和SwiftSoup。我可以使用URLSession从URL检索HTML，但希望使用Alamofire这样做。我的代码在下面。

let url = "https://www.nba.com/warriors/stats"
Alamofire.request(url, method: .post, parameters: nil, encoding: URLEncoding.default).validate(contentType: ["application/x-www-form-urlencoded"]).response { (response) in
    if let data = response.data, let _ = String(data: data, encoding: .utf8) {
        do {
            print(data)
        }
    }
}

我不确定为什么会出现以下错误。

error: Couldn't lookup symbols:
  Alamofire.DataRequest.response(queue: Swift.Optional<__C.OS_dispatch_queue>, completionHandler: (Alamofire.DefaultDataResponse) -> ()) -> Self
  protocol witness table for Alamofire.URLEncoding : Alamofire.ParameterEncoding in Alamofire
  type metadata accessor for Alamofire.DataRequest
  Alamofire.DataRequest.validate<A where A: Swift.Sequence, A.Element == Swift.String>(contentType: A) -> Self
  Alamofire.request(_: Alamofire.URLConvertible, method: Alamofire.HTTPMethod, parameters: Swift.Optional<Swift.Dictionary<Swift.String, Any>>, encoding: Alamofire.ParameterEncoding, headers: Swift.Optional<Swift.Dictionary<Swift.String, Swift.String>>) -> Alamofire.DataRequest
  protocol witness table for Swift.String : Alamofire.URLConvertible in Alamofire
  static Alamofire.URLEncoding.default.getter : Alamofire.URLEncoding
  type metadata for Alamofire.URLEncoding

Answer 1

尝试将其添加到您的class PostData { public string[] userRoles { get; set; } public string email { get; set; } } [HttpPost] public async Task<IActionResult> SaveUserRoles([FromBody]PostData postData) { return Ok(); }

Podfile

确保再次运行pod install以重新生成Pods项目。然后使用post_install do |installer| installer.pods_project.build_configurations.each do |config| config.build_settings.delete('CODE_SIGNING_ALLOWED') config.build_settings.delete('CODE_SIGNING_REQUIRED') end installer.pods_project.targets.each do |target| target.build_configurations.each do |config| config.build_settings['CONFIGURATION_BUILD_DIR'] = '$PODS_CONFIGURATION_BUILD_DIR' end end end清理构建，使用Command-Shift-K重建构建，然后运行您的游乐场。该错误应消失。

来源：https://learnappmaking.com/cocoapods-playground-how-to/

在操场上使用Alamofire无法查找符号错误

1 个答案: