Can you please try using custom submit qction https://experienceleague.adobe.com/docs/experience-manager-learn/forms/adaptive-forms/custom-submit-aem-forms-article.html?lang=en

This is the sample code to read the excel attachment on an Adaptive Form  submission I used the following library to parse the excel file. You can parse the excel file any number of ways https://mvnrepository.com/artifact/org.apache.commons/commons-csv/1.8 A custom submit action was created and the ...

So you want to read the excel file on form submission in the servlet? I will send you sample soon

can you please tell us more about the use case ?

Summary component will not display the pdf inline

  https://experienceleague.adobe.com/docs/experience-manager-learn/forms/creating-your-first-osgi-bundle/create-your-first-osgi-bundle.html?lang=en

https://experienceleague.adobe.com/docs/experience-manager-learn/forms/document-services/embed-pdf-inline.html?lang=en

https://experienceleague.adobe.com/docs/experience-manager-learn/cloud-service/forms/doc-gen-formscs/introduction.html?lang=en

The steps mentioned in the article are for Adobe Campaign Standard only

Maybe you can check the Xfa.host property and based on that hide or show the http submit button