跪求大神，用js或者java循环遍历json数组，实现下面功能，太难了，实在不会，跪求了（6）。

var origin = [

{"first_id":1,"first_name":"中学","second_id":"1-1","second_name":"一年级","third_id":"1-1-1","third_name":"一年级一班","people":10,"age":10,"parent":5},

{"first_id":1,"first_name":"中学","second_id":"1-1","second_name":"一年级","third_id":"1-1-2","third_name":"一年级二班","people":11,"age":10,"parent":5},

{"first_id":1,"first_name":"中学","second_id":"1-2","second_name":"二年级","third_id":"1-2-1","third_name":"二年级一班","people":20,"age":10,"parent":5},

{"first_id":1,"first_name":"中学","second_id":"1-2","second_name":"二年级","third_id":"1-2-2","third_name":"二年级二班","people":21,"age":10,"parent":5},

{"first_id":2,"first_name":"高中","second_id":"2-1","second_name":"一年级","third_id":"2-1-1","third_name":"一年级一班","people":31,"age":10,"parent":5}

]

var finalData = [] // 最终的数据

transferData() // 数据转换

console.log(finalData, JSON.stringify(finalData))

function transferData() {

origin.forEach(function(n) {

var first = getRecordById(n.first_id, finalData)

if (first) {

first.age += n.age

first.parent += n.parent

first.people += n.people

var second = getRecordById(n.second_id, first.children)

if (second) {

second.age += n.age

second.parent += n.parent

second.people += n.people

var third = getRecordById(n.third_id, second.children)

if (third) {

// 这里应该不会存在

} else {

second.children.push({

id: n.third_id,

name: n.third_name,

age: n.age,

parent: n.parent,

people: n.people

})

}

} else {

first.children.push({

id: n.second_id,

name: n.second_name,

age: n.age,

parent: n.parent,

people: n.people,

children: [{

id: n.third_id,

name: n.third_name,

age: n.age,

parent: n.parent,

people: n.people

}]

})

}

} else {

finalData.push({

id: n.first_id,

name: n.first_name,

age: n.age,

parent: n.parent,

people: n.people,

children: [{

id: n.second_id,

name: n.second_name,

age: n.age,

parent: n.parent,

people: n.people,

children: [{

id: n.third_id,

name: n.third_name,

age: n.age,

parent: n.parent,

people: n.people

}]

}]

})

}

})

}

function getRecordById(id, data) {

for (var i = 0, n = data.length i < n i++) {

if (data[i].id == id) return data[i]

}

return null

}

java可以使用JSONObject和JSONArray来 *** 作json对象和json数组，具体用法如下

1:java对象与json串转换：

java对象—json串：

JSONObject JSONStr = JSONObject.fromObject(object)

String str = JSONStr.toString()

json串—java对象：

JSONObject jsonObject = JSONObject.fromObject( jsonString )

Object pojo = JSONObject.toBean(jsonObject,pojoCalss)

2:java数组对象与json串转换：

java数组—json串：

JSONArray arrayStr = JSONArray.fromObject(List<?>)

String str = arrayStr.toString()

json串—java数组：

JSONArray array = JSONArray.fromObject(str)

List<?>list = JSONArray.toList(array, ?.class)

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