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

}

json是字符串，java 没有提供API遍历json吧，要借助jar包，也就是第三方的API，对json格式的字符串或是java对象之间的转换，比如：

一个json格式的字符串，用第三方API（比如gson或jackjson）对json格式字符串进行转换为List类型的，然后用for循环对这list 遍历输出即可，其它对象也是可以的，自定义的实体也行，gson或jackjson有对应的方法能做到

你有两层循环，一个for,一个$.each，肯定会多次

for(var i=0i<data.lengthi++){

                 $("#mytab tbody").append("<tr>")

                 $.each(data,function(j,k){

                 alert(k.id)

                 $("#mytab tbody").append("<td>"+j+"</td>")

                 $("#mytab tbody").append("<td>"+k.id+"</td>")

                 $("#mytab tbody").append("<td>"+k.biaoti+"</td>")

                 $("#mytab tbody").append("<td>"+k.thetime+"</td>")

                 })

                 $("#mytab tbody").append("</tr>")

                 }

改为：

$.each(data,function(j,k){

    alert(k.id)

    $("#mytab tbody").append("<tr>")

    $("#mytab tbody").append("<td>"+j+"</td>")

    $("#mytab tbody").append("<td>"+k.id+"</td>")

    $("#mytab tbody").append("<td>"+k.biaoti+"</td>")

    $("#mytab tbody").append("<td>"+k.thetime+"</td>")

    $("#mytab tbody").append("</tr>")

})

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