ios - 带有文本/纯文本响应的 API 失败，返回 'unacceptable content-type'

Question

我正在尝试执行一个 GET 请求，该请求以“text/plain”响应

请求失败，错误为“ Not Acceptable 内容类型:文本/纯文本”。

所以我将 AcceptableContentType 设置为 "text/plain" 并使用 NSJSONReadingAllowFragments 创建了一个 responseSerializer。

但请求也因错误而失败。

NSCocoaErrorDomain" - code: 3840" : "Invalid value around character 0."

      NSString *requestUrl = [NSString
                          stringWithFormat:@"%@%@",kServerURL,myURL];

  AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];

  manager.requestSerializer = [AFJSONRequestSerializer serializer];
  manager.responseSerializer = [AFJSONResponseSerializer
      serializerWithReadingOptions:NSJSONReadingAllowFragments];

  [manager.responseSerializer
      setAcceptableContentTypes:[NSSet setWithObject:@"text/plain"]];
  [manager GET:requestUrl
      parameters:nil
      progress:nil
      success:^(NSURLSessionTask *task, id responseObject) {
        NSLog(@"JSON: %@", responseObject);
      }
      failure:^(NSURLSessionTask *operation, NSError *error) {
        NSLog(@"Error: %@", error);
      }];

Answer 1

在这个地方

manager.requestSerializer = [AFJSONRequestSerializer serializer];
 manager.responseSerializer = [AFJSONResponseSerializer
  serializerWithReadingOptions:NSJSONReadingAllowFragments];
[manager.responseSerializer
  setAcceptableContentTypes:[NSSet setWithObject:@"text/plain"]];

使用

    manager.responseSerializer = [AFHTTPResponseSerializer serializer];
    manager.requestSerializer = [AFHTTPRequestSerializer serializer];