如何在Struts2中访问已登录用户的用户名？

Question

I am using Spring Security and Struts2 in my web app project. I want to store the username value of the logged user in an <s:hidden> field. Is that possible? If not, whats the best alternative?

<sec:authentication property="name" />
<s:hidden name="value" value="%{name}" />

Many thanks

Answer 1

You can get the logged in username, in fact UserDetails object using :

SecurityContextHolder.getContext().getAuthentication().getPrincipal();

This returns org.springframework.security.core.userdetails.UserDetails object. You can get username , authorities from UserDetails object.