Freemarker如何生成树形导航菜单（递归）

2023-09-24 10:08:05 60

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：

<#macromenuTreemenus>
<#ifmenus??&&menus?sizegt0>
<#listmenusasmenu>






${menu.menuName!}



${menu.url!}


${menu.permissionText!}


${menu.sortNo!}


[编辑]


<#ifmenu.menuBeans??&&menu.menuBeans?sizegt0>
<@menuTreemenus=menu.menuBeans/>





<@menuTreemenus=dto/>

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毛票票。

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Freemarker如何生成树形导航菜单（递归）

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