AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];

    manager.responseSerializer = [AFHTTPResponseSerializer serializer];

    manager.requestSerializer.timeoutInterval = ;

    manager.responseSerializer.acceptableContentTypes = [NSSet setWithObjects:@"application/json",@"text/json",@"text/plain",@"text/html", nil];

    NSString *url =  [NSString stringWithFormat:@"http://中文.com"];

    url = [ur stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];