ios 用AFN 请求WebService接口

主要设置
manager.responseSerializer
manager.requestSerializer

  AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
  manager.requestSerializer = [AFJSONRequestSerializer serializer];
  manager.responseSerializer = [AFXMLParserResponseSerializer serializer];
 [manager.requestSerializer setValue:@"text/xml; charset=utf-8" forHTTPHeaderField:@"Content-Type"];
 [manager POST:url parameters:para success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {

    

        } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {

         
        }];