Adobe AEM (Adobe Experience Manager) HTL2HTML for components - aem

Question

Adobe AEM (Adobe Experience Manager) HTL2HTML compile and test
(AEM 6.1 soon to be moving to 6.3)
I would like to automatically generate HTML from HTL Components
as part of the build process (using default / and custom values )
so I can provide additional automated testing and quality assurance.
i.e. HTML validation and Accessibility QA.
Is there a java call, or some other command line tool that could generate html snippets or pages for each of the components.
Which could be incorporated into the build process when making a call to
mvn clean install -PautoInstallPackage
I have considered generating pages using selenium but I suspect that approach is slow and error prone.
Thanks for your help
Mike

Answer 1

You can get the rendered HTML on the server side using SlingRequestProcessor.
From #nateyolles blog post:
Getting the HTML markup for a resource in Apache Sling.
#SlingServlet(paths={"/bin/foo"})
public class SlingResourceResolutionServlet extends SlingSafeMethodsServlet {
/** Service to process requests through Sling */
#Reference
private SlingRequestProcessor requestProcessor;
#Override
protected void doGet(SlingHttpServletRequest request, SlingHttpServletResponse response) throws ServletException, IOException {
/* The resource path to resolve. Use any selectors or extension. */
String requestPath = "/content/myapp/us/en/index/jcr:content/myparsys/mycomponent_f93d.html";
/*
* Create a fake request and fake response. The response adds a method to make the HTML accessible.
* You need the following three files from Apache Sling:
*
* https://github.com/apache/sling/blob/trunk/testing/junit/scriptable/src/main/java/org/apache/sling/junit/scriptable/HttpRequest.java
* https://github.com/apache/sling/blob/trunk/testing/junit/scriptable/src/main/java/org/apache/sling/junit/scriptable/HttpResponse.java
* https://github.com/apache/sling/blob/trunk/testing/junit/scriptable/src/main/java/org/apache/sling/junit/scriptable/TestServletOutputStream.java
*/
final HttpRequest req = new HttpRequest(requestPath);
final HttpResponse resp = new HttpResponse();
/* Process request through Sling */
requestProcessor.processRequest(req, resp, request.getResourceResolver());
String html = resp.getContent();
}
Getting the HTML markup for a resource in AEM.
#SlingServlet(paths={"/bin/foo"})
public class AemResourceResolutionServlet extends SlingSafeMethodsServlet {
/** Service to create HTTP Servlet requests and responses */
#Reference
private RequestResponseFactory requestResponseFactory;
/** Service to process requests through Sling */
#Reference
private SlingRequestProcessor requestProcessor;
#Override
protected void doGet(SlingHttpServletRequest request, SlingHttpServletResponse response) throws ServletException, IOException {
/* The resource path to resolve. Use any selectors or extension. */
String requestPath = "/content/myapp/us/en/index/jcr:content/myparsys/mycomponent_f93d.html";
/* Setup request */
HttpServletRequest req = requestResponseFactory.createRequest("GET", requestPath);
WCMMode.DISABLED.toRequest(req);
/* Setup response */
ByteArrayOutputStream out = new ByteArrayOutputStream();
HttpServletResponse resp = requestResponseFactory.createResponse(out);
/* Process request through Sling */
requestProcessor.processRequest(req, resp, request.getResourceResolver());
String html = out.toString();
}
}