How to send array byte of a pdf file via soapUI

I'm testing a wsdl file via SoapUI and want to send byte[] of a pdf file to client. byte[] are received at client side, but the created pdf file is blank. Below is what I have done :

SoapUI response script :

 def groovyUtils = new com.eviware.soapui.support.GroovyUtils( context )
 byte[] pdfBytes = new File(groovyUtils.projectPath + "//file1.pdf").text.getBytes( 'UTF-8' )
 requestContext.pdfBytes = pdfBytes.encodeBase64()

Java code :

 byte[] bytes = getFileFromServer();
 File f = new File(filePath);

 try {
FileOutputStream fileOuputStream = new FileOutputStream(f); 
    fileOuputStream.write(bytes);
    fileOuputStream.close();                            
 } catch (FileNotFoundException e) {
    LOG.error("FileNotFoundException", e);
 } catch (IOException e) {
LOG.error("IOException", e);
 }

By using decode, the created file is damamged :

 bytes = Base64.decodeBase64(bytes);

Any idea?