Java EE servlet ClassDefNotFound

Asked Dec 24 '16 at 07:14

Active Dec 24 '16 at 08:10

Viewed 19 times

I'm new to Java EE.

I wrote a servlet that send back a json as response. I added Simple Json jar to my project, but when the servlet's doPost() called, I get this error:

org.apache.catalina.core.StandardWrapperValve.invoke Servlet.service() for servlet [TodoServlet] in context with path [] threw exception [Servlet execution threw an exception] with root cause java.lang.ClassNotFoundException: org.json.simple.JSONObject

even I added the jar to the class path. Please help, how can I solve it.

edited Dec 24 '16 at 08:10

Rai Vu

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asked Dec 24 '16 at 07:14

user3057944

The jar must be bundled with your webapp, index WEB-INF/lib. – JB Nizet Dec 24 '16 at 08:53
Thanks, now it works. – user3057944 Dec 24 '16 at 10:39

Java EE servlet ClassDefNotFound

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