Spring Boot Tutorial 2020 | Add a new custom filter in Spring Boot

In a real-world SpringBoot application, you often need to do something to the request before it's handled or to the response before it's sent back to a browser, a phone, and whatnot.

However, you don't know how to do it, so this task seems quite daunting! 😫

Well, believe it or not, it's actually super easy. All you need to do is to create a custom filter in your SpringBoot application. You might be scratching your head now and asking yourself "so what is a filter? How to create one?"

If this sounds like you, then you have come to the right place. I will walk you through every single step, so now grab a coffee, sit back, and enjoy!! 👏🏻☕️

Other places to find me:
⭐ Facebook: @fullstackalley
⭐ Twitter: @jasper_zs

#springfilters #springbootfilter

[francksgenlecroyant]

you can make use of Spring HandlerInterceptor to perform your logic before the request is gets processed, before the request is forwarded to the next filter in chain and after completion before the response is sent to the client

[infosmart]

Hi Jasper. Thank you very much. Can we exclude the url from the global filter on application.yml instead?

[fripickbot]

How is it that you don't have to implement destroy and init methods of Filter ? I am using eclipse spring sts.

[vishnugovindan]

Hi Jasper,

The Request and Resposne filters you have created are currently running one after the other right?
How do we configure so that Request filter runs first, then the controller and then the Response filter?

I think your example would have been more helpful if you had modified the incoming request (ex. add some headers) and the outgoing response(ex. change something in the string response you are sending back) in the filters to show their true worth :)

Also, what is the difference between using filters and interceptors (Spring). Thanks for the video though!

[ahmedzein]

Thanks
But dude you know about ctrl+c And Ctrl+v??

[Krazorie]

The video made quite clear how to craft your filter but stays mysterious what the filter is for and why you would need it 🤔

[BasantKumar-syfj]

How to do csp configuration in tomcat server?

[mustaphag]

Great work. Can you please share the source code?