public class Main {

    public static void main(String[] args) throws FileNotFoundException {

        KeyStoreParameters ksp = new KeyStoreParameters();
        ksp.setResource("C://Program Files (x86)//Java//jre1.8.0_161//lib//security");
        ksp.setPassword("changeit");

        KeyManagersParameters kmp = new KeyManagersParameters();
        kmp.setKeyStore(ksp);
        kmp.setKeyPassword("changeit");

        SSLContextParameters scp = new SSLContextParameters();
        scp.setKeyManagers(kmp);


        BasicConfigurator.configure();
        RutaMail routeBuilder = new RutaMail();

        SimpleRegistry jndi= new SimpleRegistry();
        jndi.put("keystore", scp);

        CamelContext ctx = new DefaultCamelContext(jndi);





        try {

            ctx.addRoutes(routeBuilder);
            ctx.start();
            Thread.sleep(30000);
            ctx.stop();
        } catch (Exception e) {
            e.printStackTrace();
        }

    }

}

public void configure() throws Exception {

        from("imaps://imap.gmail.com:993?username=user@gmail.com&password=password"
                + "&delete=false&unseen=true&consumer.delay=60000&contentType=multipart/MIXED")
                        .convertBodyTo(String.class, "UTF-8")
                        .process(new MailProcessor())

                        .to("file:C:/outputFolder/?flatten=true&fileName=${header.nombref}")
                        .log("el nombre del archivo es  ${header.nombref}").end();
    }

}

public class MailProcessor implements Processor {

    public void process(Exchange exchange) throws Exception {
                String nombre="";


        // the API is a bit clunky so we need to loop
        Map<String, DataHandler> attachments = exchange.getIn().getAttachments();

        String file="";

        if (attachments.size() > 0) {
            for (String name : attachments.keySet()) {


                DataHandler dh = attachments.get(name);

                String filename =dh.getName();
                nombre =filename;


                byte[] data = exchange.getContext().getTypeConverter()
                                  .convertTo(byte[].class, dh.getInputStream());

                exchange.getIn().setBody( data);
                exchange.getIn().setHeader("nombref", filename);
            }


        }
   }

}