How to get product is filter to url category

You can get all product of  category you want.

p/s: 

->addAttributeToFilter('url_key','xxx')  | xxx: is url category.

->addFieldToFilter("type_id", array('neq' => 'configurable'))  | You not get all product include configurable.

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<?php $_objectManager = \Magento\Framework\App\ObjectManager::getInstance(); $categoryFactory = $_objectManager->create('Magento\Catalog\Model\ResourceModel\Category\CollectionFactory'); $topCategory = $categoryFactory->create() ->addAttributeToFilter('url_key','top-products') ->addAttributeToSelect('*') ->getFirstItem(); $topCollection = $_objectManager->create('Magento\Catalog\Model\ResourceModel\Product\CollectionFactory'); $topCate = $topCollection->create() ->addAttributeToSelect('*') ->addCategoryFilter($topCategory) ->addFieldToFilter("type_id", array('neq' => 'configurable')) ->addAttributeToFilter('status', '1') ->setPageSize(4) ->setOrder('created_at', 'DESC')->load(); ?>

And then you can use foreach for do loop product.
Example:

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<div class="row section-top open"> <?php foreach ($topCate as $product){ ?> <div class="col-md-3 custom-resize"> <div class="box-img"> <a href="<?= $product->getProductUrl()?>"> <img src="<?= $mediaUrl ."catalog/product". $product['image'] ?>" alt="<?= $product->getName()?>"> </a> </div> <h4><a href="<?= $product->getProductUrl()?>"><?= $product->getName()?></a></h4> <?php $specialPrice = $product->getSpecialPrice(); if(!is_null($specialPrice)){?> <span class="price-single"><a href="<?= $product->getProductUrl()?>"><?= "$".number_format($product->getPrice(), 2); ?></a></span> <span class="special_price"><a href="<?= $product->getProductUrl()?>"><?= "$".number_format($product->getSpecialPrice(), 2);?></a></span> <?php } else{ ?> <span class="single-price"><a href="<?= $product->getProductUrl()?>"><?= "$".number_format($product->getPrice(), 2); ?></a></span> <?php } ?> </div> <?php } ?> </div>