Returning Images Directly from Web Applications

Instead of using Corda® Embedder to embed a Corda image in a Web application, deliver the Corda image directly via a Web application. To do this, use Corda Embedder's getBytes method to send all formatting options to Corda Server™, which creates the Corda image and returns it to the Web application in a byte array.

The code below, for example, illustrates the getBytes() method in Java*:

byte ba[] = myImage.getBytes();

ServletOutputStream os = response.getOutputStream();

os.write(ba,0,ba.length);

os.close();

When using this method, set the proper mime type for the image you want to return. For example, to return a JPEG image, set the mime type to image/jpeg. Table of MIME Types in the Corda Builder™ User Guide lists the mime types for each of Corda 7's image formats. If you do not know how to set the mime type for a Web application, refer to the Web application's documentation.

Important: Be sure not to return any text other than the results of getBytes() to the Web browser. Any additional text results in a corrupted image.

The sample code below shows complete code for returning a Corda image in a JSP:

Returning a Corda image from a JSP

<%@ page contentType="application/shockwave-flash" %>

<%@ page import="com.corda.CordaEmbedder" %>

<%

CordaEmbedder myImage = new CordaEmbedder();

myImage.externalServerAddress = "http://<server_address>:2001";

myImage.internalCommPortAddress = "http://localhost:2002";

myImage.imageTemplate = "image_templates\examples\bar.itxml";

myImage.outputType = "FLASH";

byte ba[] = myImage.getBytes();

ServletOutputStream os = response.getOutputStream();

os.write(ba,0,ba.length);

os.close();

%>

Thesample code below shows complete code for returning a Corda image in ASP:

Returning a Corda image from an ASP

<%

Response.ContentType="application/shockwave-flash"

set myImage = Server.CreateObject("Corda.Embedder")

myImage.externalServerAddress = "http://<server_address>:2001"

myImage.internalCommPortAddress = "http://localhost:2002"

myImage.imageTemplate = "image_templates\examples\bar.itxml"

myImage.outputType = "FLASH"

Response.Clear

Response.BinaryWrite myImage.getBytes()

%>