java 多层嵌套问题！！

Question

将数据库查出数据拼装成以下格式的json：
{"models":[
{"modelname":"首页","modelurl":"/home","modelid":371,"fatherid":0,"nextModel":[],
"permissions":[
{"permissionid": 47,"permissionname": "首页","permissionclassic": "菜单"},
{ "permissionid": 49,"permissionname": "个人中心","permissionclassic": "菜单"}
]},
{"modelname":"首页","modelurl":"/home","modelid":371,"fatherid":0,
"nextModel":[{"modelname":"首页","modelurl":"/home","modelid":371,"fatherid":371},
{"modelname":"首页","modelurl":"/home","modelid":371,"fatherid":371,"nextModel":[],
"permissions":[
{"permissionid": 47,"permissionname": "首页","permissionclassic": "菜单"},
{"permissionid": 47,"permissionname": "首页","permissionclassic": "菜单"}
]}],"permissions":[]
}
]}

头都绕晕了

Answer 1

如果是单纯Java代码取数据，需要递归。如果是要前台展示，一般都有现成前台框架，你只需要查询子父级所有消息就行，然后对应绑定子父id，就可以自动绑定再树里。无需递归