获取当前用户

获取当前用户的方法:

java中:UserUtils.getUser() 

            如:newbean.setFker(UserUtils.getUser());

                 User user = UserUtils.getUser();

jsp中: <c:if test="${fns:getUser().id==bean.createBy.id}">

    /**
     * 获取当前用户
     * @return 取不到返回 new User()
     */
    public static User getUser(){
        Principal principal = getPrincipal();
        if (principal!=null){
            User user = get(principal.getId());
            if (user != null){
                return user;
            }
            return new User();
        }
        // 如果没有登录,则返回实例化空的User对象。
        return new User();
    }
    /**
     * 获取当前登录者对象
     */
    public static Principal getPrincipal(){
        try{
            Subject subject = SecurityUtils.getSubject();
            Principal principal = (Principal)subject.getPrincipal();
            if (principal != null){
                return principal;
            }
        }catch (UnavailableSecurityManagerException e) {
            
        }catch (InvalidSessionException e){
            
        }
        return null;
    }
原文地址:https://www.cnblogs.com/banxian-yi/p/5357449.html