Principal Object to JSON in Spring Security

Question

While building a Demo app I used JSP while login and next home page. After "authenticate" function of Authenticator returns "principal" object to home JSP page. I used these tags to fetch . Now this is becoming complex to fetch through this, as it wont support JSTL or Anugular. So I need to know how can I convert Principal object to JSON after Authentication is done. Please help me on this.

Answer 1

import com.fasterxml.jackson.databind.ObjectMapper;

    ObjectMapper mapper = new ObjectMapper();
    String user = mapper.writeValueAsString(principal);
    System.out.println(user);