require 'savon'
# create a client for the service
# http://<confluence-install>/rpc/soap-axis/pdfexport?wsdll
client = Savon.client(wsdl: 'https://example.atlassian.net/wiki/rpc/soap-axis/pdfexport?wsdl', read_timeout: 200)

# call the 'findUser' operation
response = client.call(:login, message: {username: "user", password: "pass"})

token = response.body[:login_response][:login_return]

response = client.call(:export_space, message:{token: token, space_key: "SPACE KEY"})

void exportSpaceAsPdf(spaceKey, File outputFile) {
    // Setup Pdf Export Service
    PdfExportRpcServiceLocator serviceLocator = new PdfExportRpcServiceLocator()
    serviceLocator.setpdfexportEndpointAddress("${url}/rpc/soap-axis/pdfexport")
    serviceLocator.setMaintainSession(true)
    def pdfService = serviceLocator.getpdfexport()

    // Login
    def token = pdfService.login(user, password)

    // Perform Export
    def pdfUrl = pdfService.exportSpace(token, spaceKey)

    // Download Pdf
    HttpClient client  = new DefaultHttpClient();
    HttpGet httpget = new HttpGet(pdfUrl)
    httpget.addHeader(
            BasicScheme.authenticate(
                    new UsernamePasswordCredentials(user,password),"UTF-8", false))
    HttpResponse response = client.execute(httpget)
    HttpEntity entity = response.getEntity()

    if (entity != null) {
        InputStream inputStream = entity.getContent()
        FileOutputStream fos = new FileOutputStream(outputFile)
        int inByte
        while ((inByte = inputStream.read()) != -1)
            fos.write(inByte)
        inputStream.close()
        fos.close()
    } else {
        throw new GradleException("""Cannot Export Space to PDF:
        Space:  ${spaceKey}
        Dest:   ${outputFile.absolutePath}
        URL:    ${pdfUrl}
        Status: ${response.getStatusLine()}
        """)
    }

}