I’m following this guide:
http://code.google.com/intl/it-IT/apis/documents/docs/2.0/developers_guide_java.html
I just need to retrieve a token and use it to get a list of documents, so i used AuthSub to get a single use token, and this seems to work: i get a string like this
1/BM14a4NnfKf........
Now i’m trying to do this: http://code.google.com/intl/it-IT/apis/documents/docs/2.0/developers_guide_java.html#Versioning
1) Specifying a version
2) Retrieving a list of documents
I’m managing these functions in a class called TokenServiceImpl:
package mui.server.services;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import mui.client.services.TokenService;
import com.google.appengine.api.users.User;
import com.google.appengine.api.users.UserService;
import com.google.appengine.api.users.UserServiceFactory;
import com.google.gdata.client.docs.DocsService;
import com.google.gdata.client.http.AuthSubUtil;
import com.google.gdata.data.docs.DocumentListEntry;
import com.google.gdata.data.docs.DocumentListFeed;
import com.google.gdata.util.AuthenticationException;
import com.google.gdata.util.ServiceException;
import com.google.gwt.user.server.rpc.RemoteServiceServlet;
public class TokenServiceImpl extends RemoteServiceServlet implements
TokenService {
private static final long serialVersionUID = 1L;
String nextUrl = "";
String scope = "https://docs.google.com/feeds/";
boolean secure = false; // set secure=true to request secure AuthSub tokens
boolean session = true;
String authSubUrl = "";
@Override
public String getToken(String requestUri) {
nextUrl = requestUri;
authSubUrl = AuthSubUtil.getRequestUrl(nextUrl, scope, secure, session);
return ", clicca <a href='" + authSubUrl
+ "'>qui</a> per regalarmi un token! (esempio Google Docs)";
}
@Override
public String getDocsInfo(String token) {
String elenco=", grazie del token, eccolo qui:<br> " + token + "<br>";
DocsService client = new DocsService("yourCo-yourAppName-v1");
client.setProtocolVersion(DocsService.Versions.V2);
try {
URL feedUri = new URL(
"https://docs.google.com/feeds/documents/private/full/");
DocumentListFeed feed = client.getFeed(feedUri, DocumentListFeed.class);
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ServiceException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return elenco;
}
}
But in the method getDocsInfo (which get the string “token”, the token previously retrieved) the only row
DocumentListFeed feed = client.getFeed(feedUri, DocumentListFeed.class);
gives me errors:
22-gen-2012 11.14.19 com.google.appengine.repackaged.org.apache.http.impl.client.DefaultRequestDirector handleResponse
AVVERTENZA: Authentication error: Unable to respond to any of these challenges: {googlelogin=WWW-Authenticate: GoogleLogin realm="http://www.google.com/accounts"}
com.google.gdata.util.AuthenticationException: OK
<HTML>
<HEAD>
<TITLE>Authorization required</TITLE>
</HEAD>
<BODY BGCOLOR="#FFFFFF" TEXT="#000000">
<H1>Authorization required</H1>
<H2>Error 401</H2>
</BODY>
</HTML>
at com.google.gdata.client.http.HttpGDataRequest.handleErrorResponse(HttpGDataRequest.java:600)
at com.google.gdata.client.http.GoogleGDataRequest.handleErrorResponse(GoogleGDataRequest.java:563)
at com.google.gdata.client.http.HttpGDataRequest.checkResponse(HttpGDataRequest.java:552)
at com.google.gdata.client.http.HttpGDataRequest.execute(HttpGDataRequest.java:530)
at com.google.gdata.client.http.GoogleGDataRequest.execute(GoogleGDataRequest.java:535)
at com.google.gdata.client.Service.getFeed(Service.java:1135)
at com.google.gdata.client.Service.getFeed(Service.java:998)
at com.google.gdata.client.GoogleService.getFeed(GoogleService.java:631)
at com.google.gdata.client.Service.getFeed(Service.java:1017)
at mui.server.services.TokenServiceImpl.getDocsInfo(TokenServiceImpl.java:52)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.google.appengine.tools.development.agent.runtime.Runtime.invoke(Runtime.java:100)
at com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse(RPC.java:569)
at com.google.gwt.user.server.rpc.RemoteServiceServlet.processCall(RemoteServiceServlet.java:208)
at com.google.gwt.user.server.rpc.RemoteServiceServlet.processPost(RemoteServiceServlet.java:248)
at com.google.gwt.user.server.rpc.AbstractRemoteServiceServlet.doPost(AbstractRemoteServiceServlet.java:62)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1166)
at com.google.appengine.tools.development.HeaderVerificationFilter.doFilter(HeaderVerificationFilter.java:35)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFilter.java:60)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:43)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.appengine.tools.development.StaticFileFilter.doFilter(StaticFileFilter.java:122)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.appengine.tools.development.BackendServersFilter.doFilter(BackendServersFilter.java:97)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388)
at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418)
at com.google.appengine.tools.development.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext.java:78)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at com.google.appengine.tools.development.JettyContainerService$ApiProxyHandler.handle(JettyContainerService.java:362)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at org.mortbay.jetty.Server.handle(Server.java:326)
at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:938)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:755)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:218)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409)
at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)
What am I missing? I’m really confused… I’m at the beginning with all this, maybe it’s something stupid… but is’t it just what’s exactly written in the guide?
And here in this example
http://code.google.com/intl/it-IT/apis/documents/docs/2.0/developers_guide_java.html#ListDocs
where do I need to use the token i retrieved?
Two steps more were required:
1) change the token to “sessionToken”:
2) associate the token to the client: