Oauth+Java Servlets+OAuthSigner+Servlet class instantiation error - 


>     http status 500 - error instantiating servlet class msch.oauth >      >     type exception report >      >     message error instantiating servlet class msch.oauth >      >     description server encountered internal error prevented fulfilling request. >      >     exception >      >     javax.servlet.servletexception: error instantiating servlet class msch.oauth >         org.apache.catalina.valves.errorreportvalve.invoke(errorreportvalve.java:103) >         org.apache.catalina.connector.coyoteadapter.service(coyoteadapter.java:293) >         org.apache.coyote.http11.http11processor.process(http11processor.java:861) >         org.apache.coyote.http11.http11protocol$http11connectionhandler.process(http11protocol.java:606) >         org.apache.tomcat.util.net.jioendpoint$worker.run(jioendpoint.java:489) >         java.lang.thread.run(thread.java:722) >      >     root cause >      >     java.lang.noclassdeffounderror: com/google/gdata/client/authn/oauth/oauthsigner >         java.lang.class.getdeclaredconstructors0(native method) >         java.lang.class.privategetdeclaredconstructors(class.java:2413) >         java.lang.class.getconstructor0(class.java:2723) >         java.lang.class.newinstance0(class.java:345) >         java.lang.class.newinstance(class.java:327) >         org.apache.catalina.valves.errorreportvalve.invoke(errorreportvalve.java:103) >         org.apache.catalina.connector.coyoteadapter.service(coyoteadapter.java:293) >         org.apache.coyote.http11.http11processor.process(http11processor.java:861) >         org.apache.coyote.http11.http11protocol$http11connectionhandler.process(http11protocol.java:606) >         org.apache.tomcat.util.net.jioendpoint$worker.run(jioendpoint.java:489) >         java.lang.thread.run(thread.java:722) >      >     root cause >      >     java.lang.classnotfoundexception: com.google.gdata.client.authn.oauth.oauthsigner >         org.apache.catalina.loader.webappclassloader.loadclass(webappclassloader.java:1680) >         org.apache.catalina.loader.webappclassloader.loadclass(webappclassloader.java:1526) >         java.lang.class.getdeclaredconstructors0(native method) >         java.lang.class.privategetdeclaredconstructors(class.java:2413) >         java.lang.class.getconstructor0(class.java:2723) >         java.lang.class.newinstance0(class.java:345) >         java.lang.class.newinstance(class.java:327) >         org.apache.catalina.valves.errorreportvalve.invoke(errorreportvalve.java:103) >         org.apache.catalina.connector.coyoteadapter.service(coyoteadapter.java:293) >         org.apache.coyote.http11.http11processor.process(http11processor.java:861) >               org.apache.coyote.http11.http11protocol$http11connectionhandler.process(http11protocol.java:606) >         org.apache.tomcat.util.net.jioendpoint$worker.run(jioendpoint.java:489) >         java.lang.thread.run(thread.java:722)

note: full stack trace of root cause available in apache tomcat/6.0.36 logs.

the following error when trying run servlet requesting oauth token. here msch.oauth servlet class. have configure build path , include class?if so, how? in folder , there .java file.

after lot of fiddling around found workaround solved problem. made changes run configuration of tomcat server. added libraries couldn't find proper run configuration servlet web application ones given.anyways,it worked!


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