How to add JAR libraries to WAR project without facing java.lang.ClassNotFoundException? Classpath vs Build Path vs /WEB-INF/lib

Question

How should I add JAR libraries to a WAR project in Eclipse without facing java.lang.ClassNotFoundException or java.lang.NoClassDefFoundError?

Answer 1

This article explains the same problem in Spring Boot application. Also useful information how to download Oracle jar file and include dependency, setup datasource etc:

Configuring Spring Boot with Oracle