AngularJs + bootstrap이 드롭다운 선택 상자를 구현하는 방법에 대한 자세한 설명

<select name="departInfo" ng-model="searchArgQry.departInfoSet" 
 class="form-control" multiple size="1" bootstrap-select="{&#39;liveSearch&#39;: true}">
        <c:forEach items="${departInfoList}" var="departInfo">
            <option value="${departInfo.id}">${departInfo.deptName}</option>
         </c:forEach>
 </select>

<select class="form-control" name="deptId" ng-model="searchArg.deptId"
     multiple ng-options="k as v for (k, v) in allDept" size="1" 
      bootstrap-select="{&#39;liveSearch&#39;: true}"></select>