HttpClient client = new HttpClient();
UsernamePasswordCredentials credentials = new UsernamePasswordCredentials("your_user","your_password");
client.getState().setCredentials(new AuthScope("thehost", 9090, AuthScope.ANY_REALM), credentials);
CommonsClientHttpRequestFactory commons = new CommonsClientHttpRequestFactory(client);

RestTemplate template = new RestTemplate(commons);
Example results = template.getForObject("http://www.netkiller.cn:9090/foo.json", Example.class);