How to overwrite .php file of lib directory?

Question

Any one tell me how i can overwrite this file in magento 2.3

Path:

Magento2\lib\internal\Magento\Framework\Webapi\Rest\Response\Renderer\Json.php

Answer 1

Just Create di.xml under app/code/vendor/Module/etc and put below code

<?xml version="1.0"?>

<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
    <preference for="\Magento\Framework\Webapi\Rest\Response\Renderer\Json" type="Vendor\Module\Webapi\Rest\Response\Renderer\Json" />
</config>

Answer 2

Find below the code which is working just need to put file name no need of extension of file.

Answer 3

Follow Below Steps:

1. Overwrite this file:

   \Magento\Framework\Webapi\Rest\Response\Renderer\Json.php

2. We are overwrite Json.php file using : di.xml (under app/code/Bhashkar/Module/etc and put below code)

<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
    <preference for="\Magento\Framework\Webapi\Rest\Response\Renderer\Json" type="Bhashkar\Module\Webapi\Rest\Response\Renderer\Json" />
</config>

3. Create Bhashkar\Webapi\Webapi\Rest\Response\Renderer\Json.php File and modify the functionality as per your Requirement :

   namespace Bhashkar\Module\Webapi\Rest\Response\Renderer;

   class Json implements \Magento\Framework\Webapi\Rest\Response\RendererInterface
   {
       /**
        * Adapter mime type.
        */
       const MIME_TYPE = 'application/json';
   
       /**
        * @var \Magento\Framework\Json\Encoder
        */
       protected $encoder;
   
       /**
        * Initialize dependencies.
        *
        * @param \Magento\Framework\Json\Encoder $encoder
        */
       public function __construct(\Magento\Framework\Json\Encoder $encoder)
       {
           $this->encoder= $encoder;
       }
   
       /**
        * Convert data to JSON.
        *
        * @param object|array|int|string|bool|float|null $data
        * @return string
        */
       public function render($data)
       {
           return $this->encoder->encode($data);
       }
   
       /**
        * Get JSON renderer MIME type.
        *
        * @return string
        */
       public function getMimeType()
       {
           return self::MIME_TYPE;
       }
   }