Documentation

The complete knowledge base about ARender - How to install it and how to configure it as needed

Create Watermarked documents

This code snippet allows you, using the ARender jar dependency arondor-arender-client-javarest, to communicate with rendition servers in order to generate PDFs with annotations.

In this particular example, we will setup a repeated stamp annotation on each page of the document in order to generate a watermarking.

Variables setup

Here you will have to setup the address of the rendition server you are targeting and the binary content of the original document you want to watermark. We assume in this example that the data is stored into the field data .

DocumentServiceRestClient client = new DocumentServiceRestClient();
client.setAddress("http://localhost:8761");
// Assuming that this "data" contains your documentContent
InputStream data;
DocumentAccessor original = new DocumentAccessorByteArray(data);

Loading of the documentAccessor

In this code, we load the documentAccessor and get the RENDERED version of it in case a conversion is needed on the rendition side.

client.loadDocumentAccessor(original);
DocumentAccessor accessorConverted = client.getDocumentAccessor(original.getUUID(),
        DocumentAccessorSelector.RENDERED);

Obtaining the number of pages

DocumentLayout layout = client.getDocumentLayout(accessorConverted.getUUID());
int nbPages = -1;
if (layout instanceof DocumentPageLayout)
{
    nbPages = ((DocumentPageLayout) layout).getPageCount();
}
else
{
    // send error
    throw ...
}

Setup the annotation style for stamps

// configure here the ARender stamp style
AnnotationStyle annotationStyle = new AnnotationStyle();

annotationStyle.setFontSize(80);
annotationStyle.setFontColor("rgb(0,0,255)");
annotationStyle.setBackgroundColor("none");
annotationStyle.setBorderWidth(0);
Map<String, String> styleMap = new HashMap<String, String>();
styleMap.put("fontSize", annotationStyle.getFontSize() + "");
styleMap.put("fontColor", annotationStyle.getFontColor() + "");
styleMap.put("borderWidth", annotationStyle.getBorderWidth() + "");
styleMap.put("borderColor", annotationStyle.getBorderColor() + "");
styleMap.put("backgroundColor", annotationStyle.getBackgroundColor() + "");
String newAppearance = "";
for (String key: styleMap.keySet())
{
    newAppearance += key + ":" + styleMap.get(key) + ";";
}
// the appearance for the ARender stamp is now built

Setup the list of stamps to send

// now we prepare the list of stamps to send the rendition server
List<Annotation> stamps = new ArrayList<Annotation>();
for (int i = 0; i < nbPages; i++)
{
    StampElemType annotation = new StampElemType();
    annotation.setDocumentId(DocumentIdFactory.getInstance().generate());
    annotation.setContents("WATERMARK");
    annotation.setRotation(0);
    annotation.setPosition(new PageRelativePosition(0, 100, 400, 400));

    annotation.setAppearance(newAppearance);

    annotation.setPage(i);
    stamps.add(annotation);
}

Creation of the conversion task

AlterContentDescriptionWithAnnotations alterContent = new AlterContentDescriptionWithAnnotations();
// set annotations
alterContent.setAnnotations(stamps);
// set documentId
List<DocumentId> sourceDocumentIdList = new ArrayList<DocumentId>();
sourceDocumentIdList.add(accessorConverted.getUUID());
DocumentId renderedDoc = client.alterDocumentContent(sourceDocumentIdList, alterContent);

Fetch of the resulting document

DocumentAccessor accessorFinalDocument = client.getDocumentAccessor(renderedDoc,
        DocumentAccessorSelector.RENDERED);

The binary data of the resulting document is in:

accessorFinalDocument.getInputStream();