How can I display the current logged in User with Spring Boot Thymeleaf?

Question

I am trying to display the details of the current user however I keep getting errors. I tried accessing the authenticated user from the template but that did not work as I w

Answer 1

I figured out how to fix my problem.

I created this method in a controller:

  @Autowired
UserRepository userR;
@GetMapping
public String currentUser(@ModelAttribute("user") @Valid UserRegistrationDto userDto, BindingResult result, Model model) {

    Authentication loggedInUser = SecurityContextHolder.getContext().getAuthentication();
    String email = loggedInUser.getName(); 

     User user = userR.findByEmailAddress(email);
    String firstname = user.getFirstName();
     model.addAttribute("firstName", firstname);
    model.addAttribute("emailAddress", email);

    return "userProfile1"; //this is the name of my template
}

and then I added this line of code in my html template:

Email: th:text="${emailAddress}"

Answer 2

You can use Thymeleaf extras for display authenticated user details.

Thymeleaf Extras Springsecurity4

    <div th:text="${#authentication.name} ></div>

Answer 3

Reference (4. Spring Security Dialect):

https://www.thymeleaf.org/doc/articles/springsecurity.html

Add dependencies pom.xml

<dependency>
        <groupId>org.thymeleaf.extras</groupId>
        <artifactId>thymeleaf-extras-springsecurity4</artifactId>
</dependency>

and the view (Thymeleaf):

<div sec:authorize="isAuthenticated()"> 
    Authenticated user roles:
    Logged user: <span sec:authentication="name"></span> |
    Roles: <span sec:authentication="principal.authorities"></span>
</div>

I hope you serve them

Answer 4

The problem is here:

return new 
org.springframework.security.core.userdetails.User(user.getEmailAddress(),
        user.getPassword(),
        mapRolesToAuthorities(user.getRoles()));

You lose the reference to your User entity. Change it to:

return user;

For this to work, you need to update your User entity to implement UserDetails interface:

public class User implements UserDetails {
    // some new methods to implement
}

Then, your Thymleaf code should work. Another way of getting the firstName would be:

<span th:text="${#request.userPrincipal.principal.firstName}"></span>