Learn SPRING-SECURITY with Real Code Examples

Implement form-based login with in-memory users

Secure REST APIs with JWT tokens

Configure OAuth2 login with Google/Facebook

Apply role-based access to endpoints

Enable CSRF protection for web forms

Check Spring Boot logs for security filter initialization

Verify endpoint access rules and role mapping

Ensure correct PasswordEncoder is used

Debug SecurityContext population and authentication

Test OAuth2/JWT flow with Postman or curl

Use @WithMockUser for unit tests

Test SecurityFilterChain with MockMvc

Validate method-level security annotations

Integration tests with TestRestTemplate or WebTestClient

Check unauthorized access scenarios

Deploy as Spring Boot JAR or WAR

Containerize with Docker

Run in cloud platforms (AWS, GCP, Azure)

Use HTTPS/TLS certificates

Integrate with CI/CD for automated security checks

Spring Boot - simplifies setup and configuration

Spring Security Core - main security library

Spring Security OAuth2 - OAuth2 client/server support

Spring Security LDAP - LDAP integration

PasswordEncoder and UserDetailsService utilities

Database authentication via JDBC

LDAP authentication

OAuth2/OpenID Connect login

JWT-based API protection

Integration with Spring MVC and REST controllers

Use default configurations where possible

Externalize passwords and secrets

Use annotations for method-level security

Leverage Spring Boot auto-configuration

Modularize security filters and services

Understanding filter chain and request flow

Configuring complex auth and role hierarchies

Managing stateless vs stateful sessions

Debugging authentication and authorization issues

Keeping up with security best practices and updates