Java – Google Reader API authentication

I'm trying to use this snippet to authenticate on Google API services:

RestTemplate restTemplate = new RestTemplate();
List<HttpMessageConverter<?>> converters =
   new ArrayList<HttpMessageConverter<?>> restTemplate.getMessageConverters());
converters.add(new PropertiesHttpMessageConverter());
restTemplate.setMessageConverters(converters);

Properties result = preparePostTo(AUTHENTICATION_URL)
                .using(restTemplate)
                .expecting(Properties.class)
                .withParam("accountType","HOSTED_OR_GOOGLE")
                .withParam("Email",email)
                .withParam("Passwd",password)
                .withParam("service","reader")
                .withParam("source","google-like-filter")
                .execute();
String token = (String) result.get("Auth");

Now I have tokens like dqaai... Kz6ol8kb56_ Afnfc (more than 100 characters long) and try to get the web address:

URL url = new URL(LIKERS_URL + "?i=" + id);
HttpURLConnection connection = (HttpURLConnection)url.openConnection();
connection.addRequestProperty("Authorization","GoogleLogin Auth=" + token);
return url;

But when I use this URL to get content, I get 401 client error exception What can it be?

According to this problem, everything should be OK

I can simply paste the content into the browser

Solution

Try using OAuth for Google Reader authentication / authorization You only need to use OAuth library and register your application with Google to obtain OAuth user key / key

You can use OAuth googlecode. Com or scribe