Hey Luca, It seems that this issue is due to a redirect_url mismatch between the authorization grant and the access token request; the callback URLs should be the same between STEP1 and STEP2. Actually, the callback URL should always be the one from STEP1.
For some reason, the exception doesn't print the error message sent back from the server. One way you could debug is to print or log your request params and use curl to send the request instead of your application so you can get the full error message from the server: curl https://accounts.google.com/o/oauth2/token -d "<REQUEST_PARAMS>" Best, Alain On Tue, Jun 14, 2011 at 11:20 AM, Luca Santaniello < [email protected]> wrote: > Thanks for reply... > > STEP 1 > String clientId = "xxxxxxxxxxx"; > String callback = "http://"; + request.getServerName() + ":" + > request.getServerPort() + request.getContextPath() + "/myUrl.jsp"; > String authUrl = "https://accounts.google.com/o/oauth2/auth?client_id="; + > clientId + "&redirect_uri=" + callback + "&scope= > https://www.google.com/m8/feeds/&response_type=code";; > response.sendRedirect(authUrl); > > STEP 2 (myUrl.jsp) > String code = request.getParameter("code"); > String clientSecret = "yyyyyyyyyyyyyyyyyyyyy"; > String newUrl = "https://accounts.google.com/o/oauth2/token";; > String clientId = "xxxxxxxxxxxxxxxxxxxxxxxxx"; > String callback = "http://"; + request.getServerName() + ":" + > request.getServerPort() + request.getContextPath() + "/protectedUrl2.jsp"; > > String requestUrl = "https://accounts.google.com/o/oauth2/auth?client_id="; > + clientId > + "&redirect_uri=" > + callback > + "&scope=https://www.google.com/m8/feeds/&response_type=";; > > String tokenUrl = new String( "https://accounts.google.com/o/oauth2/token > "); > > StringBuffer params = new StringBuffer(""); > params.append("code=" + code); > params.append("&client_id=" + clientId); > params.append("&client_secret=" + clientSecret); > params.append("&redirect_uri=" + callback); > params.append("&grant_type=authorization_code"); > > try > { > // Send data > URL url = new URL(tokenUrl.toString()); > URLConnection conn = url.openConnection(); > conn.setDoOutput(true); > OutputStreamWriter wr = new > OutputStreamWriter(conn.getOutputStream()); > wr.write(params.toString()); > wr.flush(); > > // Get the response > BufferedReader rd = new BufferedReader(new > InputStreamReader(conn.getInputStream())); > String line; > while ((line = rd.readLine()) != null) > { > System.out.println("---" + line); > } > wr.close(); > rd.close(); > } > catch (Exception e) > { > e.printStackTrace(); > } > > > When myUrl.jsp start, I get this error: > > > > java.io.IOException: Server returned HTTP response code: 400 for URL: > https://accounts.google.com/o/oauth2/token > at > sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1313) > at > sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:234) > at > org.apache.jsp.protectedUrl_jsp._jspService(protectedUrl_jsp.java:108) > at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) > at > org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:386) > at > org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313) > at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) > at > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) > at > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) > at > org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) > at > org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) > at > org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) > at > org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) > at > org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) > at > org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298) > at > org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859) > at > org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588) > at > org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489) > at java.lang.Thread.run(Thread.java:619) > > > Help me please! > > Thanks > > -- > You received this message because you are subscribed to the Google > Groups "Google Contacts, Shared Contacts and User Profiles APIs" group. > To post to this group, send email to > [email protected] > To unsubscribe from this group, send email to > [email protected] > For more options, visit this group at > http://code.google.com/apis/contacts/community/forum.html > -- Alain Vongsouvanh -- You received this message because you are subscribed to the Google Groups "Google Contacts, Shared Contacts and User Profiles APIs" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://code.google.com/apis/contacts/community/forum.html
