Html 使用AngularJS在侧栏菜单中列出

我正在使用bootstrap和AngularJS，我有这个代码来制作一个侧边栏菜单

<ul class="nav navbar-nav">

            <li><a href="#"><span class="glyphicon glyphicon-send"></span> Link</a></li>
            <li class="active"><a href="#"><span class="glyphicon glyphicon-plane"></span> Active Link</a></li>
            <li><a href="#"><span class="glyphicon glyphicon-cloud"></span> Link</a></li>

            <!-- Dropdown-->
            <li class="panel panel-default" id="dropdown">
                <a data-toggle="collapse" href="#dropdown-lvl1">
                    <span class="glyphicon glyphicon-user"></span> Sub Level <span class="caret"></span>
                </a>

                <!-- Dropdown level 1 -->
                <div id="dropdown-lvl1" class="panel-collapse collapse">
                    <div class="panel-body">
                        <ul class="nav navbar-nav">
                            <li><a href="#">Link</a></li>
                            <li><a href="#">Link</a></li>
                            <li><a href="#">Link</a></li>

                            <!-- Dropdown level 2 -->
                            <li class="panel panel-default" id="dropdown">
                                <a data-toggle="collapse" href="#dropdown-lvl2">
                                    <span class="glyphicon glyphicon-off"></span> Sub Level <span class="caret"></span>
                                </a>
                                <div id="dropdown-lvl2" class="panel-collapse collapse">
                                    <div class="panel-body">
                                        <ul class="nav navbar-nav">
                                            <li><a href="#">Link</a></li>
                                            <li><a href="#">Link</a></li>
                                            <li><a href="#">Link</a></li>
                                        </ul>
                                    </div>
                                </div>
                            </li>
                        </ul>
                    </div>
                </div>
            </li>

            <li><a href="#"><span class="glyphicon glyphicon-signal"></span> Link</a></li>

        </ul>

我的问题是，当我点击子级菜单时，它会将我重定向到localhost/#dropdown-lvl1而不是显示div dropdown-lvl1，你知道它为什么会有这种行为吗？

Angular使用url中的#来进行路由，因为你有