//创建AFNetworking的请求操作

    AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc] initWithRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:[NSString stringWithFormat:@"http://lib.wap.zol.com.cn/ipj/docList.php?class_id=%ld&page=%ld&vs=and380&retina=1", selfId, page + 1]]]];

    

        //设置AFNetworking返回的数据 自动进行json解析

    operation.responseSerializer = [AFJSONResponseSerializer serializer];

    

    [operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {

        [_netDataDelegate dataRead:responseObject];

        

        

    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {

        

        NSLog(@"%@", error);

    }];

        //开启数据请求

    [operation start];