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<p>This method takes a string containing the URL of the file to be downloaded. It will create a file in the current folder whose name is the same as the remote file.</p><table class="wysiwyg-macro" data-macro-name="code" style="background-image: url(/plugins/servlet/confluence/placeholder/macro-heading?definition=e2NvZGV9&amp;locale=en_GB&amp;version=2); background-repeat: no-repeat;" data-macro-body-type="PLAIN_TEXT"><tr><td class="wysiwyg-macro-body"><pre>def download(address)
{
    def file = new FileOutputStream(address.tokenize("/")[-1])
    def out = new BufferedOutputStream(file)
    out &lt;&lt; new URL(address).openStream()
    out.close()
}
</pre></td></tr></table><p><br class="atl-forced-newline" /> <br class="atl-forced-newline" /> If proxy configuration is needed, call this:</p><table class="wysiwyg-macro" data-macro-name="code" style="background-image: url(/plugins/servlet/confluence/placeholder/macro-heading?definition=e2NvZGV9&amp;locale=en_GB&amp;version=2); background-repeat: no-repeat;" data-macro-body-type="PLAIN_TEXT"><tr><td class="wysiwyg-macro-body"><pre>System.properties.putAll( ["http.proxyHost":"proxy-host", "http.proxyPort":"proxy-port","http.proxyUserName":"user-name", "http.proxyPassword":"proxy-passwd"] )
</pre></td></tr></table><p> </p><p><br class="atl-forced-newline" /> before the call.</p><p>Here is another approach using categories. The default left shift operators acts on text streams only. This category overrides the left shift operator making it a binary copy and uses the URL type as the source for the data.</p><table class="wysiwyg-macro" data-macro-name="code" style="background-image: url(/plugins/servlet/confluence/placeholder/macro-heading?definition=e2NvZGV9&amp;locale=en_GB&amp;version=2); background-repeat: no-repeat;" data-macro-body-type="PLAIN_TEXT"><tr><td class="wysiwyg-macro-body"><pre>package tests.io;

class FileBinaryCategoryTest extends GroovyTestCase
{
  void testDownloadBinaryFile()
  {
    def file = new File("logo.gif")

use (FileBinaryCategory)
    {
      file &lt;&lt; "http://www.google.com/images/logo.gif".toURL()
    }

assert file.length() > 0

file.delete()
  }
}

class FileBinaryCategory
{
  def static leftShift(File a_file, URL a_url)
  {
    def input
    def output

try
    {
      input = a_url.openStream()
      output = new BufferedOutputStream(new FileOutputStream(a_file))

output &lt;&lt; input
    }
    finally
    {
       input?.close()
       output?.close()
    }
  }
}

A little less verbose FileBinaryCategory

class FileBinaryCategory{    
    def static leftShift(File file, URL url){    
       url.withInputStream {is->
            file.withOutputStream {os->
                def bs = new BufferedOutputStream( os )
                bs &lt;&lt; is                    
            }
        } 
    }    
}</pre></td></tr></table><p><br class="atl-forced-newline" /> </p>