Freemarker生成树形导航菜单的方法

 <#macro menuTree menus>
 <#if menus?? && menus?size gt 0>
 <#list menus as menu>
 <tr>
 <td>
 <input type="checkbox" name="ids" value="${menu.id}" />
 </td>
 <td>
 <span title="${menu.name!}" style="margin-left: ${menu.leaf * 30}px;[#if menu.leaf == 0] color: #000000;[/#if]">
 ${menu.menuName!}
 </span>
 </td>
 <td>
 ${menu.url!}
 </td>
 <td>
 ${menu.permissionText!}
 </td>
 <td>
 ${menu.sortNo!}
 </td>
 <td>
 <a href="edit.jhtml?id=${menu.id}">[编辑]</a>
 </td>
 </tr>
 <#if menu.menuBeans?? && menu.menuBeans?size gt 0>
 <@menuTree menus = menu.menuBeans/>
 </#if>
 </#list>
 </#if>
 </#macro>
 <!-- 调用宏 生成递归树 -->
 <@menuTree menus = dto />

[
 {
 "id": 1, 
 "enable": true, 
 "remark": null, 
 "createBy": 1, 
 "createTime": 1503546411000, 
 "updateBy": 1, 
 "updateTime": 1503546415000, 
 "keyword": null, 
 "menuName": "系统管理", 
 "menuType": 1, 
 "parentId": null, 
 "iconcls": null, 
 "url": null, 
 "expand": null, 
 "sortNo": null, 
 "permission": null, 
 "moduleId": 1, 
 "parentName": null, 
 "leaf": 0, 
 "typeName": null, 
 "permissionText": null, 
 "menuBeans": [
 {
 "id": 7, 
 "enable": true, 
 "remark": null, 
 "createBy": 1, 
 "createTime": 1503546411000, 
 "updateBy": 1, 
 "updateTime": 1503546415000, 
 "keyword": null, 
 "menuName": "模块管理", 
 "menuType": 1, 
 "parentId": 1, 
 "iconcls": null, 
 "url": "/module/list", 
 "expand": null, 
 "sortNo": null, 
 "permission": null, 
 "moduleId": 1, 
 "parentName": null, 
 "leaf": 1, 
 "typeName": null, 
 "permissionText": null, 
 "menuBeans": null
 }, 
 {
 "id": 3, 
 "enable": true, 
 "remark": null, 
 "createBy": 1, 
 "createTime": 1503546411000, 
 "updateBy": 1, 
 "updateTime": 1503546415000, 
 "keyword": null, 
 "menuName": "菜单管理", 
 "menuType": 1, 
 "parentId": 1, 
 "iconcls": null, 
 "url": "/menu/list", 
 "expand": null, 
 "sortNo": null, 
 "permission": "admin:add", 
 "moduleId": 1, 
 "parentName": null, 
 "leaf": 1, 
 "typeName": null, 
 "permissionText": null, 
 "menuBeans": null
 }
 ]
 }, 
 {
 "id": 2, 
 "enable": true, 
 "remark": null, 
 "createBy": 1, 
 "createTime": 1503546411000, 
 "updateBy": 1, 
 "updateTime": 1503546415000, 
 "keyword": null, 
 "menuName": "用户管理", 
 "menuType": 1, 
 "parentId": null, 
 "iconcls": null, 
 "url": null, 
 "expand": null, 
 "sortNo": null, 
 "permission": null, 
 "moduleId": 1, 
 "parentName": null, 
 "leaf": 0, 
 "typeName": null, 
 "permissionText": null, 
 "menuBeans": [
 {
 "id": 9, 
 "enable": true, 
 "remark": null, 
 "createBy": 1, 
 "createTime": 1503546411000, 
 "updateBy": 1, 
 "updateTime": 1503546415000, 
 "keyword": null, 
 "menuName": "供应商管理", 
 "menuType": 1, 
 "parentId": 2, 
 "iconcls": null, 
 "url": null, 
 "expand": null, 
 "sortNo": null, 
 "permission": null, 
 "moduleId": 1, 
 "parentName": null, 
 "leaf": 1, 
 "typeName": null, 
 "permissionText": null, 
 "menuBeans": null
 }, 
 {
 "id": 8, 
 "enable": true, 
 "remark": null, 
 "createBy": 1, 
 "createTime": 1503546411000, 
 "updateBy": 1, 
 "updateTime": 1503546415000, 
 "keyword": null, 
 "menuName": "部门管理", 
 "menuType": 1, 
 "parentId": 2, 
 "iconcls": null, 
 "url": null, 
 "expand": null, 
 "sortNo": null, 
 "permission": null, 
 "moduleId": 1, 
 "parentName": null, 
 "leaf": 1, 
 "typeName": null, 
 "permissionText": null, 
 "menuBeans": null
 }, 
 {
 "id": 6, 
 "enable": true, 
 "remark": null, 
 "createBy": 1, 
 "createTime": 1503546411000, 
 "updateBy": 1, 
 "updateTime": 1503546415000, 
 "keyword": null, 
 "menuName": "权限管理", 
 "menuType": 1, 
 "parentId": 2, 
 "iconcls": null, 
 "url": "/user/list-6", 
 "expand": null, 
 "sortNo": null, 
 "permission": null, 
 "moduleId": 1, 
 "parentName": null, 
 "leaf": 1, 
 "typeName": null, 
 "permissionText": null, 
 "menuBeans": null
 }, 
 {
 "id": 5, 
 "enable": true, 
 "remark": null, 
 "createBy": 1, 
 "createTime": 1503546411000, 
 "updateBy": 1, 
 "updateTime": 1503546415000, 
 "keyword": null, 
 "menuName": "角色管理", 
 "menuType": 1, 
 "parentId": 2, 
 "iconcls": null, 
 "url": "/user/list-5", 
 "expand": null, 
 "sortNo": null, 
 "permission": null, 
 "moduleId": 1, 
 "parentName": null, 
 "leaf": 1, 
 "typeName": null, 
 "permissionText": null, 
 "menuBeans": null
 }, 
 {
 "id": 4, 
 "enable": true, 
 "remark": null, 
 "createBy": 1, 
 "createTime": 1503546411000, 
 "updateBy": 1, 
 "updateTime": 1503546415000, 
 "keyword": null, 
 "menuName": "分销商管理", 
 "menuType": 1, 
 "parentId": 2, 
 "iconcls": null, 
 "url": "/user/add-4", 
 "expand": null, 
 "sortNo": null, 
 "permission": null, 
 "moduleId": 1, 
 "parentName": null, 
 "leaf": 1, 
 "typeName": null, 
 "permissionText": null, 
 "menuBeans": null
 }, 
 {
 "id": 10, 
 "enable": true, 
 "remark": null, 
 "createBy": 1, 
 "createTime": 1503546411000, 
 "updateBy": 1, 
 "updateTime": 1503546415000, 
 "keyword": null, 
 "menuName": "员工管理", 
 "menuType": 1, 
 "parentId": 2, 
 "iconcls": null, 
 "url": null, 
 "expand": null, 
 "sortNo": null, 
 "permission": null, 
 "moduleId": 1, 
 "parentName": null, 
 "leaf": 1, 
 "typeName": null, 
 "permissionText": null, 
 "menuBeans": null
 }
 ]
 }
]