Spring Boot Filter Example

How to add a filter in spring boot.

In this tutorial we will learn how to add a filter in spring boot application. How to define execution order for filters ? How to apply Filter on specific URL ?

What are spring boot filters?

A filter is an object used to intercept the HTTP requests and responses of your application. By using filter, we can perform two operations at two instances − Before sending the request to the controller. Before sending a response to the client.

I have already created one spring boot project. In this project now I will add filter classes. So here I will create two filter classes. 1. StudentFilter 2. MessageFilter .

Spring Boot Filer Demo Application

Now I am going to create new package com.example.aoploggingdemo.filter inside this package will create two filter classes .

StudentFilter and MessageFilter class

Now I will start the application and will execute any API then on console we can check both filter class doFilter(-,-,-) method will execute and can check the logs on console.