posts.jsp

String defaultPostName = "";

//Below is logic to default posts based on page selectors.    
//e.g. posts.{post-name.}.html
String selectorPath = currentPage.adaptTo(Resource.class).getResourceMetadata().getResolutionPathInfo();
String selectors[] = selectorPath.split("\\.");
if (selectors.length > 2) {
  defaultPostName = selectors[1];
}