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Creating your first servlet in AEM Forms | AEM Community Blog Seeding

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Creating your first servlet in AEM Forms by Adobe Docs


Sling Servlet
A Servlet is a class used to extend the capabilities of servers that host applications accessed by means of a request-response programming model. For such applications, Servlet technology defines HTTP-specific servlet classes.
All servlets must implement the Servlet interface, which defines life-cycle methods.

A servlet in AEM can be registered as OSGi service: you can extend SlingSafeMethodsServlet for read-only implementation or SlingAllMethodsServlet in order to implement all RESTful operations.

Servlet Code
import javax.servlet.Servlet;

import org.osgi.service.component.annotations.Component;
import org.osgi.service.component.annotations.Reference;

import com.adobe.aemfd.docmanager.Document;
import com.adobe.fd.forms.api.FormsService;

@Component(service={Servlet.class}, property={"sling.servlet.methods=post", "sling.servlet.paths=/bin/mergedataWithAcroform"})
public class MyFirstAEMFormsServlet extends SlingAllMethodsServlet

private static final long serialVersionUID = 1L;
FormsService formsService;
protected void doPost(SlingHttpServletRequest request, SlingHttpServletResponse response)
String file_path = request.getParameter("save_location"); pdf_document_is = null; xml_is = null;
javax.servlet.http.Part pdf_document_part = null;
javax.servlet.http.Part xml_data_part = null;
pdf_document_part = request.getPart("pdf_file");
xml_data_part = request.getPart("xml_data_file");
pdf_document_is = pdf_document_part.getInputStream();
xml_is = xml_data_part.getInputStream();
Document data_merged_document = formsService.importData(new Document(pdf_document_is), new Document(xml_is));
data_merged_document.copyToFile(new File(file_path));

catch(Exception e)

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Creating your first servlet in AEM Forms


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