Why Spring Context is loaded twice?

Question

I have web project with Spring and Spring security. My web.xml:

Answer 1

Since you have spring delegatingFilterProxy, if you drop contextLoaderLister you will get the below exception.

java.lang.IllegalStateException: No WebApplicationContext found: 
no   ContextLoaderListener registered?

So load security-config.xml via contextLoaderLister and billboard-servlet.xml via dispatcher servlet.