/**
	 * 读取亚马逊产品的名称，评论数
	 * @Route("/admin/fetch", name="fetch")
	 */
	public function fetchAction(Request $request)
	{
		if ($productId = $request->get('productId', null)) {
			// check if the product already in the database, if not created
			$entityManager = $this->getDoctrine()->getManager();

			// Choose a Mink driver. More about it in later chapters.
			//$driver = new \Behat\Mink\Driver\GoutteDriver();
			$driver = new \Behat\Mink\Driver\ZombieDriver(
				//new \Behat\Mink\Driver\NodeJS\Server\ZombieServer()
				new \Behat\Mink\Driver\NodeJS\Server\ZombieServer('127.0.0.1', Unity::getAvailablePort())
			);

			$session = new \Behat\Mink\Session($driver);

			// start the session
			$session->start();

			//$session->visit("http://www.amazon.com/dp/B00S137T8E/");
			// product review link
			$commentPage = $this->getCommentPage($productId, $session);

			$product = $entityManager->getRepository('AppBundle:NormalProduct')->findOneBy(array(
				'ASIN' => $productId,
			));
			if (!$product) {
				$product = new NormalProduct();
				// get total comments 
				$totalComments = $this->getTotalPages($commentPage);
				// get product title
				$productTitle = $this->getProductTitle($commentPage);

				$product->setASIN($productId);
				$product->setCommentsCount($totalComments);
				$product->setTitle($productTitle);

				$entityManager->persist($product);
				$entityManager->flush();
			}

			// fetch and save url segment
			$commentSegments = $this->getCommentUrlSegmentByTotal($product);
			foreach($commentSegments as $segment)
			{
				if(!$entitySegment = $entityManager->getRepository('AppBundle:CommentUrl')->findOneBy(array( 'segment' => $segment))) {
					$entitySegment = new CommentUrl();
					$entitySegment->setSegment($segment);
					$entitySegment->setProduct($product);
					$entityManager->persist($entitySegment);
					$entityManager->flush();
				}
			}

			$this->addFlash(
				'notice',
				'该产品已经保存到<strong>已抓取产品列表</strong>,产品评论用户信息已经列入服务器抓取队列!'
			);
		}

		return $this->render("AppBundle:Fetch:fetch.html.twig");
	}