java.lang.NoClassDefFoundError: com/google/appengine/api/utils/SystemProperty

[Kwon Jin Bacali]

I am beginner in Google Cloud platform, I deployed my java web application using NetBeans 8.2 and i follow the tutorial on this link(https://blog.idrsolutions.com/2015/09/how-to-use-the-google-app-engine-with-the-netbeans-ide/). When i run the appengine and login to a form, it returns:

"Error: Server Error

The server encountered an error and could not complete your request. Please try again in 30 seconds."

when i check the error in Error Reporting in Google Cloud Platform:

java.lang.NoClassDefFoundError: com/google/appengine/api/utils/SystemProperty
at org.apache.jsp.login_jsp._jspService (login_jsp.java:120)
at org.apache.jasper.runtime.HttpJspBase.service (HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service (HttpServlet.java:790)
at org.eclipse.jetty.servlet.ServletHolder.handle (ServletHolder.java:848)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter (ServletHandler.java:1772)
at com.google.apphosting.utils.servlet.JdbcMySqlConnectionCleanupFilter.doFilter (JdbcMySqlConnectionCleanupFilter.java:60)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter (ServletHandler.java:1759)
at org.eclipse.jetty.servlet.ServletHandler.doHandle (ServletHandler.java:582)
at org.eclipse.jetty.server.handler.ScopedHandler.handle (ScopedHandler.java:143)
at org.eclipse.jetty.security.SecurityHandler.handle (SecurityHandler.java:524)
at org.eclipse.jetty.server.session.SessionHandler.doHandle (SessionHandler.java:226)
at org.eclipse.jetty.server.handler.ScopedHandler.handle (ScopedHandler.java:143)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle (HandlerWrapper.java:134)
at com.google.apphosting.runtime.jetty9.ParseBlobUploadHandler.handle (ParseBlobUploadHandler.java:119)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle (ContextHandler.java:1182)
at com.google.apphosting.runtime.jetty9.AppEngineWebAppContext.doHandle (AppEngineWebAppContext.java:187)
at org.eclipse.jetty.servlet.ServletHandler.doScope (ServletHandler.java:512)
at org.eclipse.jetty.server.session.SessionHandler.doScope (SessionHandler.java:185)
at org.eclipse.jetty.server.handler.ContextHandler.doScope (ContextHandler.java:1112)
at org.eclipse.jetty.server.handler.ScopedHandler.handle (ScopedHandler.java:141)
at com.google.apphosting.runtime.jetty9.AppVersionHandlerMap.handle (AppVersionHandlerMap.java:293)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle (HandlerWrapper.java:134)
at org.eclipse.jetty.server.Server.handle (Server.java:539)
at org.eclipse.jetty.server.HttpChannel.handle (HttpChannel.java:333)
at com.google.apphosting.runtime.jetty9.RpcConnection.handle (RpcConnection.java:213)
at com.google.apphosting.runtime.jetty9.RpcConnector.serviceRequest (RpcConnector.java:81)
at com.google.apphosting.runtime.jetty9.JettyServletEngineAdapter.serviceRequest (JettyServletEngineAdapter.java:134)
at com.google.apphosting.runtime.JavaRuntime$RequestRunnable.dispatchServletRequest (JavaRuntime.java:757)
at com.google.apphosting.runtime.JavaRuntime$RequestRunnable.dispatchRequest (JavaRuntime.java:720)
at com.google.apphosting.runtime.JavaRuntime$RequestRunnable.run (JavaRuntime.java:690)
at com.google.apphosting.runtime.JavaRuntime$NullSandboxRequestRunnable.run (JavaRuntime.java:882)
at com.google.apphosting.runtime.ThreadGroupPool$PoolEntry.run (ThreadGroupPool.java:270)
at java.lang.Thread.run (Thread.java:748)

I am beginner in Google Cloud platform, I deployed my java web application using NetBeans 8.2 and i follow the tutorial on this link. When i run the appengine, it returns:

"Error: Server Error

The server encountered an error and could not complete your request. Please try again in 30 seconds."

when i check the error in Error Reporting in Google Cloud Platform:

java.lang.NoClassDefFoundError: com/google/appengine/api/utils/SystemProperty
at org.apache.jsp.login_jsp._jspService (login_jsp.java:120)
at org.apache.jasper.runtime.HttpJspBase.service (HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service (HttpServlet.java:790)
at org.eclipse.jetty.servlet.ServletHolder.handle (ServletHolder.java:848)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter (ServletHandler.java:1772)
at com.google.apphosting.utils.servlet.JdbcMySqlConnectionCleanupFilter.doFilter (JdbcMySqlConnectionCleanupFilter.java:60)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter (ServletHandler.java:1759)
at org.eclipse.jetty.servlet.ServletHandler.doHandle (ServletHandler.java:582)
at org.eclipse.jetty.server.handler.ScopedHandler.handle (ScopedHandler.java:143)
at org.eclipse.jetty.security.SecurityHandler.handle (SecurityHandler.java:524)
at org.eclipse.jetty.server.session.SessionHandler.doHandle (SessionHandler.java:226)
at org.eclipse.jetty.server.handler.ScopedHandler.handle (ScopedHandler.java:143)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle (HandlerWrapper.java:134)
at com.google.apphosting.runtime.jetty9.ParseBlobUploadHandler.handle (ParseBlobUploadHandler.java:119)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle (ContextHandler.java:1182)
at com.google.apphosting.runtime.jetty9.AppEngineWebAppContext.doHandle (AppEngineWebAppContext.java:187)
at org.eclipse.jetty.servlet.ServletHandler.doScope (ServletHandler.java:512)
at org.eclipse.jetty.server.session.SessionHandler.doScope (SessionHandler.java:185)
at org.eclipse.jetty.server.handler.ContextHandler.doScope (ContextHandler.java:1112)
at org.eclipse.jetty.server.handler.ScopedHandler.handle (ScopedHandler.java:141)
at com.google.apphosting.runtime.jetty9.AppVersionHandlerMap.handle (AppVersionHandlerMap.java:293)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle (HandlerWrapper.java:134)
at org.eclipse.jetty.server.Server.handle (Server.java:539)
at org.eclipse.jetty.server.HttpChannel.handle (HttpChannel.java:333)
at com.google.apphosting.runtime.jetty9.RpcConnection.handle (RpcConnection.java:213)
at com.google.apphosting.runtime.jetty9.RpcConnector.serviceRequest (RpcConnector.java:81)
at com.google.apphosting.runtime.jetty9.JettyServletEngineAdapter.serviceRequest (JettyServletEngineAdapter.java:134)
at com.google.apphosting.runtime.JavaRuntime$RequestRunnable.dispatchServletRequest (JavaRuntime.java:757)
at com.google.apphosting.runtime.JavaRuntime$RequestRunnable.dispatchRequest (JavaRuntime.java:720)
at com.google.apphosting.runtime.JavaRuntime$RequestRunnable.run (JavaRuntime.java:690)
at com.google.apphosting.runtime.JavaRuntime$NullSandboxRequestRunnable.run (JavaRuntime.java:882)
at com.google.apphosting.runtime.ThreadGroupPool$PoolEntry.run (ThreadGroupPool.java:270)
at java.lang.Thread.run (Thread.java:748)


what does it mean? I want to connect my Web Application in Google Cloud SQL and after i login, it returns 500 Server Error.

[Aref Amiri (Cloud Platform Support)]

The 500 server error occurs in most cases due to an issue with the application code. I would suggest to run your code locally and see if it runs successfully. If the the issue persist, then it is best to post the issue on Stackoverflow where the community members would be able to assist you with the coding issue.

However, if you are able to run it locally and believe the issue is related to Google Cloud service, I'd suggest to post a new issue on Public Issue Tracker, as it may require further investigation.