获取当前用户权限和用户名关键代码

/**
     * 获得当前用户权限
     */
    private String getAuthorities() {
        Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
        List<String> roles = new ArrayList<String>();
        for (GrantedAuthority ga : authentication.getAuthorities()) {
            roles.add(ga.getAuthority());
        }
        return roles.toString();
    }

/**
     * 获得当前用户名称
     */
    private String getUname() {
        return SecurityContextHolder.getContext().getAuthentication().getName();
    }