这篇文章主要为大家详细介绍了Freemarker采用的的方法生成树形导航菜单，具有一定的参考价值，感兴趣的小伙伴们可以参考一下
很多导航菜单是树形的，即一级一级往下分，这样的结构固然需要用递归来处理。
对于Freemarker 来说，宏就相当于函数，其定义了签名及参数列表。
所以在freemarker页面应这样写：
<#macro menuTree menus><#if menus?? && menus?size gt 0><#list menus as menu><#if menu.menuBeans?? && menu.menuBeans?size gt 0><@menuTree menus = menu.menuBeans/><@menuTree menus = dto /> ${menu.menuName!} ${menu.url!} ${menu.permissionText!} ${menu.sortNo!} [编辑]
后台数据：
[ { "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 } ] } ] 以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持html中文网。
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