Go 小白理念JSON
JSON
本示例将展示如何使用 encoding/json 包对 JSON 数据进行编码和解码。
json.go
// json.go
package main
import (
"encoding/json"
"fmt"
"net/http"
)
type User struct {
Firstname string `json:"firstname"`
Lastname string `json:"lastname"`
Age int `json:"age"`
}
func main() {
http.HandleFunc("/decode", func(w http.ResponseWriter, r *http.Request) {
var user User
json.NewDecoder(r.Body).Decode(&user)
fmt.Fprintf(w, "%s %s is %d years old!", user.Firstname, user.Lastname, user.Age)
})
http.HandleFunc("/encode", func(w http.ResponseWriter, r *http.Request) {
peter := User{
Firstname: "John",
Lastname: "Doe",
Age: 25,
}
json.NewEncoder(w).Encode(peter)
})
http.ListenAndServe(":8080", nil)
}run
$ go run json.go
$ curl -s -XPOST -d'{"firstname":"Elon","lastname":"Musk","age":48}' http://localhost:8080/decode
Elon Musk is 48 years old!
$ curl -s http://localhost:8080/encode
{"firstname":"John","lastname":"Doe","age":25}
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