java反序列化为空_SplPriorityQueue序列化并反序列化后结果为空问题解决

今天在尝试把SplPriorityQueue对象序列化并反序列化后&＃xff0c;遇到了问题。反序列化后在队列里的数据全没了&＃xff0c;这让我很伤心。

$pq &＃61; new SplPriorityQueue;

$pq->insert(&＃39;imi 基于 Swoole 常驻内存协程开发框架&＃39;, 100);

$pq->insert(&＃39;https://gitee.com/yurunsoft/IMI&＃39;, 200);

$pq->insert(&＃39;https://github.com/Yurunsoft/IMI&＃39;, 300);

var_dump($pq->count());

$serialize &＃61; serialize($pq);

var_dump($serialize);

$unserialize &＃61; unserialize($serialize);

var_dump($unserialize->count());

结果&＃xff1a;

int(3)

string(28) "O:16:"SplPriorityQueue":0:{}"

int(0)

莫得办法&＃xff0c;自己动手丰衣足食吧&＃xff01;通过自定义类继承SplPriorityQueue并实现Serializable接口&＃xff0c;来自己处理序列化和反序列化数据。

解决问题的代码如下&＃xff1a;

class PriorityQueue extends \SplPriorityQueue implements \Serializable

{

public function serialize()

{

return serialize(iterator_to_array(clone $this));

}

public function unserialize($serialized)

{

$array &＃61; unserialize($serialized);

foreach($array as $p &＃61;> $v)

{

$this->insert($v, $p);

}

}

}

$pq &＃61; new PriorityQueue;

$pq->insert(&＃39;imi 基于 Swoole 常驻内存协程开发框架&＃39;, 100);

$pq->insert(&＃39;https://gitee.com/yurunsoft/IMI&＃39;, 200);

$pq->insert(&＃39;https://github.com/Yurunsoft/IMI&＃39;, 300);

var_dump($pq->count());

$serialize &＃61; serialize($pq);

var_dump($serialize);

$unserialize &＃61; unserialize($serialize);

var_dump($unserialize->count());

结果&＃xff1a;

int(3)

string(180) "C:13:"PriorityQueue":153:{a:3:{i:2;s:32:"https://github.com/Yurunsoft/IMI";i:1;s:31:"https://gitee.com/yurunsoft/IMI";i:0;s:48:"imi 基于 Swoole 常驻内存协程开发框架";}}"

int(3)

完美解决~