我为自己的博客设计了一个html模板，在我的主题中，我的菜单就是这个结构，

<ul class="right">
<li class="has-dropdown">
<a class="active" href="index.html">Home</a>
<ul class="dropdown">
<li><a href="index.html">Home Page - Default</a></li>
<li><a href="index-type1.html">Home Page Type 1</a></li>
<li><a href="index-type2.html">Home Page Type 2</a></li>
<li class="has-dropdown"><a href="#">TouchM Sliders</a>
<ul class="dropdown">
<li><a href="index.html">Slider Revolution</a></li>
<li><a href="index-flexi.html">Flexislider</a></li>
<li><a href="index-camera.html">Camera Slider</a></li>
</ul>
</li>
</ul>
</li>

<li class="has-dropdown">
<a  href="#">Features</a>
<ul class="dropdown">
<li><a href="about.html">About Us</a></li>
<li><a href="services.html">Services</a></li>
<li><a href="pricing.html">Pricing Tables</a></li>
<li><a href="shortcodes.html">Shortcodes</a></li>
<li><a href="notfound.html">404 Not Found</a></li>
<li><a href="under-construction.html">Under Construction</a></li>
<li class="has-dropdown"><a href="#">Third Navigation Level</a>
<ul class="dropdown">
<li><a href="#">This is a simple example</a></li>
<li><a href="#">Of the Third Level</a></li>
</ul>
</li>
</ul>        
</li>

<li class="has-dropdown">
<a href="#">Blog</a>
<ul class="dropdown">
<li><a href="blog_sidebar_right.html">Blog Default</a></li>
<li><a href="blog_type1.html">Blog Type 1</a></li>
<li><a href="blog_type2.html">Blog Type 2</a></li>         
<li><a href="blog_sidebar_right.html">Sidebar Right</a></li>
<li><a href="blog_sidebar_left.html">Sidebar Left</a></li>
<li><a href="blog_inner.html">Single Post</a></li>
</ul>
</li>

<li class="has-dropdown">
<a href="#">Portfolio</a>
<ul class="dropdown">             
<li><a href="portfolio_default.html">Portfolio Default (4 Columns)</a></li>         
<li><a href="portfolio_type1.html" class="">Portfolio 2 Columns</a></li>
<li><a href="portfolio_type2.html">Portfolio 3 Columns</a></li> 
<li><a href="portfolio_default.html">Portfolio 4 Columns</a></li>            
<li><a href="single-project.html">Single Project</a></li>
</ul>
</li>

<li><a href="contact.html">Contact</a></li>

</ul>

但当我使用wp nav menu创建菜单时，wordpress不正确创建此菜单，我搜索此问题，然后我取消重新启动以解决此问题，使用wp nav wlaker类，这一次我的问题是哪个walker类与此菜单结构兼容