Come accedere a una risorsa da un agente java in lotus

In questo post spiego come accedere ad una risorsa, ad esempio un’immagine, da un agente java senza che questo file sia stato prima salvato sul file system.
L’agente è stato testato su un client lotus 8.5.x

1. Crea un agente java
2. Importa un’immagine come risorsa utilizzando il pulsante Import -> Resource
   
3. Modifica la classe JavaAgent:
   
   Java

   import lotus.domino.*; import java.awt.image.BufferedImage; import java.io.ByteArrayInputStream; import java.io.File; import java.io.InputStream; import javax.imageio.ImageIO; import org.apache.commons.io.IOUtils; public class JavaAgent extends AgentBase { public void NotesMain() { try { Session session = getSession(); AgentContext agentContext = session.getAgentContext(); // (Your code goes here) // first example: from image resource to bytes // you need org.apache.commons.io.IOUtils InputStream is = getClass().getClassLoader().getResourceAsStream("myPicture.jpg"); byte[] bytes = IOUtils.toByteArray(is); // second example: from image resource to file InputStream in = (ByteArrayInputStream)getClass().getClassLoader().getResourceAsStream("myPicture.jpg"); BufferedImage img = ImageIO.read(in); ImageIO.write(img, "jpg", new File("c:\\myPicture.jpg")); } catch(Exception e) { e.printStackTrace(); } }

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   import lotus.domino.*;   import java.awt.image.BufferedImage; import java.io.ByteArrayInputStream; import java.io.File; import java.io.InputStream; import javax.imageio.ImageIO; import org.apache.commons.io.IOUtils;   public class JavaAgent extends AgentBase {   public void NotesMain() {   try { Session session = getSession(); AgentContext agentContext = session.getAgentContext();   // (Your code goes here) // first example: from image resource to bytes // you need org.apache.commons.io.IOUtils InputStream is = getClass().getClassLoader().getResourceAsStream("myPicture.jpg"); byte[] bytes = IOUtils.toByteArray(is);   // second example: from image resource to file InputStream in = (ByteArrayInputStream)getClass().getClassLoader().getResourceAsStream("myPicture.jpg"); BufferedImage img = ImageIO.read(in);   ImageIO.write(img, "jpg", new File("c:\\myPicture.jpg"));   } catch(Exception e) { e.printStackTrace(); } }

Nel primo esempio l’immagine è trasformata in bytes (per questo è necessario l’import org.apache.commons.io.IOUtils e quindi anche l’importazione del relativo file .jar sotto Archive)
Nel secondo esempio l’immagine è salvata su disco