NoClassDefFoundError error

[AhmedADM]

Hi

After adding following Spring security setups

• dependency injunction in pom.xml
• SecurityConfiguration.java
• Added filters in web.xml
• Other configurations in todo-servlet

I am getting the following error, please help. I have deleted and reinstalled the whole project and get same error page.

javax.servlet.ServletException: Servlet.init() for servlet dispatcher threw exception
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1041)
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:603)
org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
java.lang.Thread.run(Thread.java:745)

[in28minutes]

Which version of Java are you using?

[AhmedADM]

I am using Java 8.

[in28minutes]

Can you make the complete zip of the project you are using available to me? I would love to take a look...

[karthikkappagantula]

Hello Ranga. Probably this might be an old topic. I am a total newbie and I have faced same issue. When I compared pom.xml there is a change in spring-mvc version used. Just wanted to understand why the app is failing with spring-mvc version 4.2.3 (used until step31), and started working with 4.2.2 version. I would like to learn and understand how can we determine which dependency version goes along well with other dependencies.

Thanks for your detailed lessons. I am learning a lot from your courses.