create page programmatically by servlet

As mentioned by Peter, please use PageManager APIs.

Example:- 

Link:- https://helpx.adobe.com/experience-manager/using/ecommerce62.html

// Creating custom Adobe Experience Manager 6.2 ecommerce providers

Option 2: Using Curl Commands

Link:- https://hashimkhan.in/2015/05/27/aem-with-curl/

//

Create a Page (Although its not recommended to do with cURL, as we have Page Manager API for this.)

curl -u admin:admin -F "jcr:primaryType=cq:Page" -F "jcr:content/jcr:primaryType=cq:PageContent" -F "jcr:content/jcr:title=Curl Page" -F "jcr:content/sling:resourceType=geometrixx/components/contentpage" http://localhost:4502/content/geometrixx/en/curlPage
 

I hope this would help you.

~kautuk