編輯這是工作代碼，以防有人發現它有用。這個問題的標題最初是“How to parse a list fo dicts in golang”。這是標題不正確，因為我引用了我在 python 中熟悉的術語。package mainimport ( "encoding/json" "fmt" "io/ioutil" "log" "net/http")//Regional Struttype Region []struct { Region string `json:"region"` Description string `json:"Description"` ID int `json:"Id"` Name string `json:"Name"` Status int `json:"Status"` Nodes []struct { NodeID int `json:"NodeId"` Code string `json:"Code"` Continent string `json:"Continent"` City string `json:"City"` } `json:"Nodes"`}//working request and responsefunc main() { url := "https://api.geo.com" // Create a Bearer string by appending string access token var bearer = "TOK:" + "TOKEN" // Create a new request using http req, err := http.NewRequest("GET", url, nil) // add authorization header to the req req.Header.Add("Authorization", bearer) //This is what the response from the API looks like //regionJson := `[{"region":"GEO:ABC","Description":"ABCLand","Id":1,"Name":"ABCLand [GEO-ABC]","Status":1,"Nodes":[{"NodeId":17,"Code":"LAX","Continent":"North America","City":"Los Angeles"},{"NodeId":18,"Code":"LBC","Continent":"North America","City":"Long Beach"}]},{"region":"GEO:DEF","Description":"DEFLand","Id":2,"Name":"DEFLand","Status":1,"Nodes":[{"NodeId":15,"Code":"NRT","Continent":"Asia","City":"Narita"},{"NodeId":31,"Code":"TYO","Continent":"Asia","City":"Tokyo"}]}]` //Send req using http Client client := &http.Client{} resp, err := client.Do(req) if err != nil { log.Println("Error on response.\n[ERROR] -", err) } defer resp.Body.Close() body, err := ioutil.ReadAll(resp.Body) if err != nil { log.Println("Error while reading the response bytes:", err) } var regions []Region json.Unmarshal([]byte(body), ®ions) fmt.Printf("Regions: %+v", regions)}
1 回答
慕少森
TA貢獻2019條經驗 獲得超9個贊
看看這個操場上的例子以獲得一些指示。
這是代碼：
package main
import (
"encoding/json"
"log"
)
func main() {
b := []byte(`
[
{"key": "value", "key2": "value2"},
{"key": "value", "key2": "value2"}
]`)
var mm []map[string]string
if err := json.Unmarshal(b, &mm); err != nil {
log.Fatal(err)
}
for _, m := range mm {
for k, v := range m {
log.Printf("%s [%s]", k, v)
}
}
}
我重新格式化了您包含的 API 響應，因為它不是有效的 JSON。
在 Go 中，需要定義類型以匹配 JSON 模式。
我不知道為什么 API 會附加%到結果的末尾，所以我忽略了這一點。如果包含它，您將需要在解組之前從文件中修剪結果。
你從解組中得到的是一張地圖。然后，您可以遍歷切片以獲取每個映射，然后遍歷每個映射以提取keys 和 alues v。
更新
在您更新的問題中，您包含不同的 JSON 模式，并且此更改必須通過更新類型反映在 Go 代碼中。您的代碼中還有其他一些錯誤。根據我的評論，我鼓勵你花一些時間學習這門語言。
package main
import (
"bytes"
"encoding/json"
"io/ioutil"
"log"
)
// Response is a type that represents the API response
type Response []Record
// Record is a type that represents the individual records
// The name Record is arbitrary as it is unnamed in the response
// Golang supports struct tags to map the JSON properties
// e.g. JSON "region" maps to a Golang field "Region"
type Record struct {
Region string `json:"region"`
Description string `json:"description"`
ID int `json:"id"`
Nodes []Node
}
type Node struct {
NodeID int `json:"NodeId`
Code string `json:"Code"`
}
func main() {
// A slice of byte representing your example response
b := []byte(`[{
"region": "GEO:ABC",
"Description": "ABCLand",
"Id": 1,
"Name": "ABCLand [GEO-ABC]",
"Status": 1,
"Nodes": [{
"NodeId": 17,
"Code": "LAX",
"Continent": "North America",
"City": "Los Angeles"
}, {
"NodeId": 18,
"Code": "LBC",
"Continent": "North America",
"City": "Long Beach"
}]
}, {
"region": "GEO:DEF",
"Description": "DEFLand",
"Id": 2,
"Name": "DEFLand",
"Status": 1,
"Nodes": [{
"NodeId": 15,
"Code": "NRT",
"Continent": "Asia",
"City": "Narita"
}, {
"NodeId": 31,
"Code": "TYO",
"Continent": "Asia",
"City": "Tokyo"
}]
}]`)
// To more closely match your code, create a Reader
rdr := bytes.NewReader(b)
// This matches your code, read from the Reader
body, err := ioutil.ReadAll(rdr)
if err != nil {
// Use Printf to format strings
log.Printf("Error while reading the response bytes\n%s", err)
}
// Initialize a variable of type Response
resp := &Response{}
// Try unmarshaling the body into it
if err := json.Unmarshal(body, resp); err != nil {
log.Fatal(err)
}
// Print the result
log.Printf("%+v", resp)
}
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