Java Error 500 in accessing contact

[Gianluigi]

Hi, i'm trying to access contacts but i got an error.

I already got access token with oAuth2, then i have a servlet with the code:

public void doGet(HttpServletRequest req, HttpServletResponse resp)

throws IOException {

resp.setContentType("text/plain");

String AccessToken= req.getParameter("accessToken");

ContactsService myService = new ContactsService("CloudOffice");

myService.setHeader("Authorization", "Oauth <OAUTH_TOKEN>")

   // Authorize the service object.

// Request the feed

 URL feedUrl = new URL("https://www.google.com/m8/feeds/contacts/default/full");

 resp.getWriter().println(feedUrl.toString());

 

 ContactFeed resultFeed=new ContactFeed();

try {

resultFeed = myService.getFeed(feedUrl, ContactFeed.class);

} catch (ServiceException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

but i got the error 505:

Problem accessing /contactaccess. Reason:

    com/google/gdata/client/contacts/ContactsService

Caused by:

java.lang.NoClassDefFoundError: com/google/gdata/client/contacts/ContactsService
	at contactAccess.ContactAccessServlet.doGet(ContactAccessServlet.java:25)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

...

It looks like i'm missing something...

can you help me?

[Gianluigi]

I forgot to write that ContactAccessServlet.java:25 corresponds to  ContactsService myService = new ContactsService("CloudOffice");

[Wojciech Mąka]

Simply You do not have ContactsService included in build path. Configure your build path properly - i mean add gdata-contacts jar. 

[Gianluigi]

That looks odd, since i already have ...\gdata-src.java-1.46.0\gdata
\java\lib\gdata-contacts-3.0.jar in my build path