ClassNotFoundException with ServletContextlistener

Question

I get an exception whenever I try getting context parameter from we.XML into a ServletContextListener class, I am really having hard times understa

Answer 1

My guess is that you have packaged the servlet-api jar in your webapp (in the WEB-INF/lib) folder and this is causing conflicts since the servlet-api will already be present in the container. Make sure you don't include any servlet-api or jsp-api (or Java EE api) jars in your webapp when you deploy it.

Answer 2

Verify the space in disk. When eclipse copy the folder libs if not space in disk this error may occur

Answer 3

Try to clear the tomcat work directory and clean. After that, publish your project and run again.

Answer 4

I had the same problem running JUnit in a Tomcat 7 environment and I solved it adding a dependency in maven (pom.xml) like this:

    <dependency>
        <groupId>org.apache.tomcat</groupId>
        <artifactId>tomcat-servlet-api</artifactId>
        <version>7.0.54</version>
        <scope>provided</scope>
    </dependency>

Answer 5

If you are working in Eclipse, Then just clean your project.

Follow this simple step, Go to Project > clean...> clean all projects > Ok

Answer 6

I had the same issue when I tried with eclipse LUNA version and tomcat 7. The same code without any extra changes worked in eclipse JUNO with tomcat 7.