Replacing web.xml with Java config

Post Servlet 3.0, web.xml has become redundant. It can now be replaced with pure Java configuration.

We can do that even without Spring. But since we are using Spring MVC, I am taking the Spring example. Define a class implementing the WebApplicationInitializer, as below:

Note that we can define servlets, filters, etc., whatever we do in the web.xml. Its super simple and very readable.

Please be aware that you need to include the below servlet 3.x dependency in your pom.xml:

Moreover, you have to include the below Maven plugin and set the failOnMissingWebXml property to false in pom.xml:

 

The sources will be found here:

https://github.com/paawak/blog/tree/master/code/simple-spring-rest

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