如何根据相同的值对数组进行分组
Posted
技术标签:
【中文标题】如何根据相同的值对数组进行分组【英文标题】：How to group array based on same value 【发布时间】：2021-11-28 09:43:30 【问题描述】：我正在使用 golang，这是使用 struct 创建的 json 数据。但是我们需要使用 rooms->code 基础值对数据进行分组。
在下面的 json 数据中，需要使用 Room Code 明智地对数组进行分组。不要创建重复的 json 节点。 实际 Json 数据
"responseStatus": "SUCCESS",
"version": "v1.9",
"checkIn": "2021-10-12",
"checkOut": "2021-10-16",
"currency": "AED",
"hotels": [
"code": "OT000000001",
"name": "TAJ TEST HOTEL",
"rooms": [
"code": "9011",
"name": "Beach Villa With Jacuzzi",
"rates": [
"subSupplierId": "DC",
"boardCode": "FB",
"ratePlanCode": "9011_0_11_136_136",
"channel": 23,
"allotment": 100,
"price": 1469.04,
"cancellationPolicy":
"policies": null
]
,
"code": "8525",
"name": "Doubello",
"rates": [
"subSupplierId": "DC",
"boardCode": "FB",
"ratePlanCode": "8525_0_11_136_136",
"channel": 23,
"allotment": 100,
"price": 4407.08,
"cancellationPolicy":
"policies": null
]
,
"code": "8525",
"name": "Doubello",
"rates": [
"subSupplierId": "DC",
"boardCode": "",
"ratePlanCode": "8525_0_22_136_136",
"channel": 23,
"allotment": 100,
"price": 7345.12,
"cancellationPolicy":
"policies": null
]
]
],
"remark": ""
需要转换我的实际输出
"responseStatus": "SUCCESS",
"version": "v1.9",
"checkIn": "2021-10-12",
"checkOut": "2021-10-16",
"currency": "AED",
"hotels": [
"code": "OT000000001",
"name": "TAJ TEST HOTEL",
"rooms": [
"code": "9011",
"name": "Beach Villa With Jacuzzi",
"rates": [
"subSupplierId": "DC",
"boardCode": "FB",
"ratePlanCode": "9011_0_11_136_136",
"channel": 23,
"allotment": 100,
"price": 1469.04,
"cancellationPolicy":
"policies": null
]
,
"code": "8525",
"name": "Doubello",
"rates": [
"subSupplierId": "DC",
"boardCode": "FB",
"ratePlanCode": "8525_0_11_136_136",
"channel": 23,
"allotment": 100,
"price": 4407.08,
"cancellationPolicy":
"policies": null
,
"subSupplierId": "DC",
"boardCode": "",
"ratePlanCode": "8525_0_22_136_136",
"channel": 23,
"allotment": 100,
"price": 7345.12,
"cancellationPolicy":
"policies": null
]
]
],
"remark": ""
需要对"code": "8525"
上的数据进行分组【问题讨论】：
这完全是太多的代码，请提供一个最小的，可重现的例子 根据您的请求删除了代码。只添加了实际需求数据。 不，您应该提供一个 minimal reproducible example 来证明问题所在，即介于整个程序和什么都没有之间的某个位置。 【参考方案1】：您可以遍历rooms 并将每个唯一的room.code 存储在map 中。当您遇到以前见过的code 时，只需将其添加到rates 的数组中，这将是您在map 中的该键的值。然后按照自己的方式将新数字插入到现有数据结构中。
package main
import (
"encoding/json"
"fmt"
"io/ioutil"
"os"
)
type Response struct
Status string `json:"responseStatus"`
Version string `json:"version"`
CheckIn string `json:"checkIn"`
CheckOut string `json:"checkOut"`
Currency string `json:"currency"`
Hotels []Hotel `json:"hotels"`
Remark string `json:"remark"`
type Hotel struct
Code string `json:"code"`
Name string `json:"name"`
Rooms []Room `json:"rooms"`
type Room struct
Code string `json:"code"`
Name string `json:"name"`
Rates []Rate `json:"rates"`
type Rate struct
SupplierID string `json:"subSupplierId"`
BoardCode string `json:"boardCode"`
RateCode string `json:"ratePlanCode"`
Channel int `json:"channel"`
Allotment int `json:"allotment"`
Price float64 `json:"price"`
CancelPolicy Policy `json:"cancellationPolicy"`
type Policy struct
Policies string `json:"policies"`
func main()
byt, err := ioutil.ReadFile("foo.json")
if err != nil
os.Exit(1)
resp := Response
json.Unmarshal(byt, &resp)
hotels := resp.Hotels
newHotels := make([]Hotel, 0)
for _, hotel := range hotels
newRooms := make(map[string]Room)
for _, room := range hotel.Rooms
if val, ok := newRooms[room.Code]; ok
newRates := append(val.Rates, room.Rates...)
val.Rates = newRates
newRooms[room.Code] = val
else
newRooms[room.Code] = room
finalRooms := make([]Room, 0)
for _, v := range newRooms
finalRooms = append(finalRooms, v)
hotel.Rooms = finalRooms
newHotels = append(newHotels, hotel)
resp.Hotels = newHotels
respJSON, err := json.MarshalIndent(resp, "", " ")
if err != nil
os.Exit(1)
fmt.Printf(string(respJSON))
"responseStatus": "SUCCESS",
"version": "v1.9",
"checkIn": "2021-10-12",
"checkOut": "2021-10-16",
"currency": "AED",
"hotels": [
"code": "OT000000001",
"name": "TAJ TEST HOTEL",
"rooms": [
"code": "9011",
"name": "Beach Villa With Jacuzzi",
"rates": [
"subSupplierId": "DC",
"boardCode": "FB",
"ratePlanCode": "9011_0_11_136_136",
"channel": 23,
"allotment": 100,
"price": 1469.04,
"cancellationPolicy":
"policies": ""
]
,
"code": "8525",
"name": "Doubello",
"rates": [
"subSupplierId": "DC",
"boardCode": "FB",
"ratePlanCode": "8525_0_11_136_136",
"channel": 23,
"allotment": 100,
"price": 4407.08,
"cancellationPolicy":
"policies": ""
,
"subSupplierId": "DC",
"boardCode": "",
"ratePlanCode": "8525_0_22_136_136",
"channel": 23,
"allotment": 100,
"price": 7345.12,
"cancellationPolicy":
"policies": ""
]
]
],
"remark": ""
【讨论】：
以上是关于如何根据相同的值对数组进行分组的主要内容，如果未能解决你的问题，请参考以下文章