Hi All,
I have the same problem Could not initialize class
'com.mysql.jdbc.
>
> ConnectionImpl' while working with Google app engine in the Dev mode. Any
> leads on the solution?
>
Thanks
On Monday, June 20, 2011 5:59:35 PM UTC+5:30, Aryan wrote:
>
> Hi all,
> I have an application using RequestFactory. Its a small
> application for the purpose of practice. Here is the problem that when
> I run the application ( in eclipse with Google App Engine ) it says
> Could not initialize class 'com.mysql.jdbc.ConnectionImpl'. However on
> compiling and deploying over Tomcat 7.0 container it runs fine and run
> as expected.
>
> Now this kind of behavior is a bit uncomfortable for development. Any
> Idea how it can be resolved within Dev mode.
>
> The Exception stack trace is as following :
>
>
> com.google.web.bindery.requestfactory.server.ReportableException:
> Server Error: Could not initialize class com.mysql.jdbc.ConnectionImpl
> at
> com.google.web.bindery.requestfactory.server.ServiceLayerDecorator.report(ServiceLayerDecorator.java:
>
>
> 238)
> at
> com.google.web.bindery.requestfactory.server.ReflectiveServiceLayer.invoke(ReflectiveServiceLayer.java:
>
>
> 191)
> at
> com.google.web.bindery.requestfactory.server.ServiceLayerDecorator.invoke(ServiceLayerDecorator.java:
>
>
> 110)
> at
> com.google.web.bindery.requestfactory.server.ServiceLayerDecorator.invoke(ServiceLayerDecorator.java:
>
>
> 110)
> at
> com.google.web.bindery.requestfactory.server.ReflectiveServiceLayer.isLive(ReflectiveServiceLayer.java:
>
>
> 202)
> at
> com.google.web.bindery.requestfactory.server.ServiceLayerDecorator.isLive(ServiceLayerDecorator.java:
>
>
> 115)
> at
> com.google.web.bindery.requestfactory.server.LocatorServiceLayer.doIsLive(LocatorServiceLayer.java:
>
>
> 198)
> at
> com.google.web.bindery.requestfactory.server.LocatorServiceLayer.isLive(LocatorServiceLayer.java:
>
>
> 90)
> at
> com.google.web.bindery.requestfactory.server.ServiceLayerDecorator.isLive(ServiceLayerDecorator.java:
>
>
> 115)
> at
> com.google.web.bindery.requestfactory.server.SimpleRequestProcessor.createReturnOperations(SimpleRequestProcessor.java:
>
>
> 268)
> at
> com.google.web.bindery.requestfactory.server.SimpleRequestProcessor.process(SimpleRequestProcessor.java:
>
>
> 225)
> at
> com.google.web.bindery.requestfactory.server.SimpleRequestProcessor.process(SimpleRequestProcessor.java:
>
>
> 125)
> at
> com.google.web.bindery.requestfactory.server.RequestFactoryServlet.doPost(RequestFactoryServlet.java:
>
>
> 118)
> 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:
>
>
> 58)
> 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:
>
>
> 94)
> 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.apphosting.utils.jetty.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext.java:
>
>
> 70)
> at
> org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:
> 152)
> at com.google.appengine.tools.development.JettyContainerService
> $ApiProxyHandler.handle(JettyContainerService.java:351)
> 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)
> Caused by: java.lang.NoClassDefFoundError: Could not initialize class
> com.mysql.jdbc.ConnectionImpl
> at
> com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:
> 282)
> at java.sql.DriverManager.getConnection(DriverManager.java:582)
> at java.sql.DriverManager.getConnection(DriverManager.java:185)
> at
> com.google.mydynatable.server.PizzaDAO.getConnection(PizzaDAO.java:
> 42)
> at
> com.google.mydynatable.server.PizzaDAO.findByID(PizzaDAO.java:79)
> at
> com.google.mydynatable.server.domain.Pizza.findPizza(Pizza.java:
> 31)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:
> 39)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:
>
>
> 25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at
> com.google.appengine.tools.development.agent.runtime.Runtime.invoke(Runtime.java:
>
>
> 100)
> at
> com.google.web.bindery.requestfactory.server.ReflectiveServiceLayer.invoke(ReflectiveServiceLayer.java:
>
>
> 180)
> ... 42 more
> Driver loadedcom.mysql.jdbc.Driver@10eb816
> Driver loadedcom.mysql.jdbc.Driver@50c6dd
> Driver loadedcom.mysql.jdbc.Driver@4f18f6
> com.google.web.bindery.requestfactory.server.ReportableException:
> Server Error: Could not initialize class com.mysql.jdbc.ConnectionImpl
> at
> com.google.web.bindery.requestfactory.server.ServiceLayerDecorator.report(ServiceLayerDecorator.java:
>
>
> 238)
> at
> com.google.web.bindery.requestfactory.server.ReflectiveServiceLayer.invoke(ReflectiveServiceLayer.java:
>
>
> 191)
> at
> com.google.web.bindery.requestfactory.server.ServiceLayerDecorator.invoke(ServiceLayerDecorator.java:
>
>
> 110)
> at
> com.google.web.bindery.requestfactory.server.ServiceLayerDecorator.invoke(ServiceLayerDecorator.java:
>
>
> 110)
> at
> com.google.web.bindery.requestfactory.server.ReflectiveServiceLayer.isLive(ReflectiveServiceLayer.java:
>
>
> 202)
> at
> com.google.web.bindery.requestfactory.server.ServiceLayerDecorator.isLive(ServiceLayerDecorator.java:
>
>
> 115)
> at
> com.google.web.bindery.requestfactory.server.LocatorServiceLayer.doIsLive(LocatorServiceLayer.java:
>
>
> 198)
> at
> com.google.web.bindery.requestfactory.server.LocatorServiceLayer.isLive(LocatorServiceLayer.java:
>
>
> 90)
> at
> com.google.web.bindery.requestfactory.server.ServiceLayerDecorator.isLive(ServiceLayerDecorator.java:
>
>
> 115)
> at
> com.google.web.bindery.requestfactory.server.SimpleRequestProcessor.createReturnOperations(SimpleRequestProcessor.java:
>
>
> 268)
> at
> com.google.web.bindery.requestfactory.server.SimpleRequestProcessor.process(SimpleRequestProcessor.java:
>
>
> 225)
> at
> com.google.web.bindery.requestfactory.server.SimpleRequestProcessor.process(SimpleRequestProcessor.java:
>
>
> 125)
> at
> com.google.web.bindery.requestfactory.server.RequestFactoryServlet.doPost(RequestFactoryServlet.java:
>
>
> 118)
> 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:
>
>
> 58)
> 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:
>
>
> 94)
> 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.apphosting.utils.jetty.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext.java:
>
>
> 70)
> at
> org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:
> 152)
> at com.google.appengine.tools.development.JettyContainerService
> $ApiProxyHandler.handle(JettyContainerService.java:351)
> 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)
> Caused by: java.lang.NoClassDefFoundError: Could not initialize class
> com.mysql.jdbc.ConnectionImpl
> at
> com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:
> 282)
> at java.sql.DriverManager.getConnection(DriverManager.java:582)
> at java.sql.DriverManager.getConnection(DriverManager.java:185)
> at
> com.google.mydynatable.server.PizzaDAO.getConnection(PizzaDAO.java:
> 42)
> at
> com.google.mydynatable.server.PizzaDAO.findByID(PizzaDAO.java:79)
> at
> com.google.mydynatable.server.domain.Pizza.findPizza(Pizza.java:
> 31)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:
> 39)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:
>
>
> 25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at
> com.google.appengine.tools.development.agent.runtime.Runtime.invoke(Runtime.java:
>
>
> 100)
> at
> com.google.web.bindery.requestfactory.server.ReflectiveServiceLayer.invoke(ReflectiveServiceLayer.java:
>
>
> 180)
> ... 42 more
>
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