What You'll Learn

• How to add Spring Security to an existing Spring Boot project
• How to add the Thymeleaf Spring Security extras to an existing Spring Boot Project

• Add the following Spring Security starter dependency to your build.gradle file

dependencies {
	...
	implementation 'org.springframework.boot:spring-boot-starter-security'
}

• Restart your application. You will see ALL HTTP endpoints are protected with a basic login page by default.
• The default username is user and the default password is printed to the console e.g.

2020-11-18 21:26:09.144  INFO 33929 --- [main] .s.s.UserDetailsServiceAutoConfiguration :  Using generated security password: 9d3593b1-ce46-4de5-895f-abce86bb878c

• Integrate Thymeleaf and Spring Security such that you can use security related expressions in Thymeleaf templates.
  • Add the following dependency to your build.gradle file:

dependencies {
	...
  compile group: 'org.thymeleaf.extras', name: 'thymeleaf-extras-springsecurity5'
}

• Configure Spring Security
• Use Spring Security related expressions in Thymeleaf