How do I enable Spring Security in Java Web application?

To enable Spring security in Java Web application, you need to do configure three things,

declare a delegating proxy filter in web.xml,
add ContextLoaderListener in web.xml,
and provide actual security constraints on applicationContext-Security.xml file.

Since Spring security uses a chain of filters to implement various security constraints, also known as security chain filter, it relies on web container for the initialization of delegating filter proxy.

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Spring / Spring Security

How do I enable Spring Security in Java Web application?

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