springboot使用freemarker shiro標籤

<!-- freemarker + shiro（標籤） begin -->
        <dependency>
            <groupId>net.mingsoft</groupId>
            <artifactId>shiro-freemarker-tags</artifactId>
            <version>1.0.0</version>
        </dependency>
        <!-- freemarker + shiro（標籤） begin -->

import com.jagregory.shiro.freemarker.ShiroTags;
import freemarker.template.TemplateModelException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer;

import javax.annotation.PostConstruct;

/**
 * @Author: SimonHu
 * @Date: 2020/6/8 17:02
 * @Description:
 */
@Component
public class ShiroTagsFreeMarkerCfg {
    private static final Logger log = LoggerFactory.getLogger(ShiroTagsFreeMarkerCfg.class);
    @Autowired
    private FreeMarkerConfigurer freeMarkerConfigurer;
    
    @PostConstruct
    public void setSharedVariable() throws TemplateModelException {
        log.info("設置freeMarker 的shiro 標籤");
        freeMarkerConfigurer.getConfiguration().setSharedVariable("shiro", new ShiroTags());
    }
}

<！-- html 靜態頁面 -->
<div class="layui-side layui-side-bg layui-larry-side" id="larry-side">
        <div class="layui-side-scroll" id="larry-nav-side" lay-filter="side">
            <div class="user-photo">
                <a class="img" title="我的頭像"><img src="http://api.zihexin.net/appimages/ad/20190702/17348339484_1080.png"></a>
                <p>你好！<span class="userName"><@shiro.principal  property='username'/></span>, 歡迎登錄</p>
            </div>
        <!-- 左側菜單 -->
        <ul class="layui-nav layui-nav-tree">
            <menu-item :item="item" v-for="item in menuList"></menu-item>
        </ul>
        </div>
    </div>