您可以在JSON响应数组中设置自己的密钥。它可以是任何东西。看看这个简单的例子：

add_action( \'rest_api_init\', function () {
    register_rest_route( \'shubham\', \'/get_the_post/\', array(
            \'methods\' => \'GET\', 
            \'callback\' => \'get_posts_by_rest\' 
    ) );
});
// Callback function
function get_posts_by_rest( ){
    // Get the post id from the URL and validate it
    if( isset( $_REQUEST[\'post_id\'] ) && filter_var( $_REQUEST[\'post_id\'] , FILTER_VALIDATE_INT ) ) {
        $id = abs( $_REQUEST[\'post_id\'] );
    } else {
        return __(\'Please enter a post ID.\',\'text-domain\');
    }
    // Fetch the post
    $post = get_post( $id );
    // Check if the post exists
    if( $post ) {
        // Now, form our own array
        $data = array();
        $data[\'id\'] = $post->ID;
        $data[\'date\'] = $post->post_date;
        $data[\'date_gmt\'] = $post->post_date_gmt;
        $data[\'guid\'] = $post->guid;
        $data[\'modified\'] = $post->post_modified 
        $data[\'modified_gmt\'] = $post->post_modified_gmt;
        $data[\'slug\'] = $post->post_name;
        $data[\'status\'] = $post->post_status;
        $data[\'title\'] = $post->post_title;
        $data[\'content\'] = $post->post_content;
        $data[\'excerpt\'] = $post->post_excerpt;
        // Add the rest of your content

        // Return the response
        return $data;
    } else {
        return __(\'Invalid post ID\',\'text-domain\');
    }
}