Java tutorial
/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package mvc; import java.util.HashMap; import java.util.Map; import javax.servlet.http.HttpServletRequest; import mvc.parent.WebController; import org.springframework.security.authentication.AnonymousAuthenticationToken; import org.springframework.security.core.Authentication; import org.springframework.security.core.context.SecurityContextHolder; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.ModelAttribute; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.ResponseBody; /** * ? ? * * @author Rice Pavel */ @Controller public class CheckUserController extends WebController { @RequestMapping("/CheckUser") @ResponseBody public Map<String, Object> checkUser(HttpServletRequest request) { Map<String, Object> map = new HashMap(); map.put("anonymous", isAnonymous()); map.put("userName", getUserName()); return map; } private boolean isAnonymous() { Authentication auth = SecurityContextHolder.getContext().getAuthentication(); return (auth instanceof AnonymousAuthenticationToken); } private String getUserName() { Authentication authentication = SecurityContextHolder.getContext().getAuthentication(); if (!(authentication instanceof AnonymousAuthenticationToken) && authentication != null) { String currentUserName = authentication.getName(); return currentUserName; } return ""; } }