Understanding Spring Security

Spring Security (https://spring.io/projects/spring-security) provides security services for Java-based web applications. The Spring Security project was started in 2003 and was previously named Acegi Security System for Spring.By default, Spring Security enables the following features:

• An AuthenticationManager bean with an in-memory single user. The username is user, and the password is printed to the console output.
• Ignored paths for common static resource locations, such as /css and /images. HTTP basic security for all other endpoints.
• Security events published to Spring's ApplicationEventPublisher interface.
• Common low-level features are on by default HTTP Strict Transport Security (HSTS), cross-site scripting (XSS), cross-site request forgery (CSRF), and so forth).
• Default autogenerated login page.

You can include Spring Security in your application by adding the following dependencies to the build.gradle file. The first dependency is for the application...