prismic-htmlSerializer.java

Document doc = response.getResults().get(0);
final DocumentLinkResolver resolver = new DocumentLinkResolver() {
  @Override public String resolve(Fragment.DocumentLink link) {
    return "/"+link.getId()+"/"+link.getSlug();
  }
};
HtmlSerializer serializer = new HtmlSerializer() {
  @Override public String serialize(Fragment.StructuredText.Element element, String content) {
    if (element instanceof Fragment.StructuredText.Block.Image) {
      // Don't wrap images in <p> tags
      return ((Fragment.StructuredText.Block.Image)element).getView().asHtml(resolver);
    }
    if (element instanceof Fragment.StructuredText.Span.Em) {
      // Add class to <em> tags
      return "<span class='italic'>" + content + "</span>";
    }

    return null;
  }
};
String html = doc.getStructuredText("blog-post.body").asHtml(resolver, serializer);