예제로 살펴보는 Go : JSON

예제로 살펴보는 Go : JSON

package main

import (
    "encoding/json"
    "fmt"
    "os"
)

type Response1 struct {
    Page int
    Fruits []string
}

type Response2 struct {
    Page int `json:"page"`
    Fruits []string `json:"fruits"`
    Tag string `json:"tag,omitempty"`
    Comment string `json:"-"`
}

func main() {
    bolB, _ := json.Marshal(true)
    fmt.Println(string(bolB))
    
    intB, _ := json.Marshal(1)
    fmt.Println(string(intB))
    
    fltB, _ := json.Marshal(2.34)
    fmt.Println(string(fltB))
    
    strB, _ := json.Marshal("gohher")
    fmt.Println(string(strB))
    
    slcD := []string{"apple", "peach", "pear"}
    slcB, _ := json.Marshal(slcD)
    fmt.Println(string(slcB))
   
    mapD := map[string]int{"apple":5, "lettuce":7} 
    mapB, _:= json.Marshal(mapD)
    fmt.Println(string(mapB))
    
    res1D := &Response1 {
        Page: 1,
        Fruits: []string{"apple", "peach", "pear"},
    }
    res1B, _:= json.Marshal(res1D)
    fmt.Println(string(res1B))
    
    res2D := &Response2 {
        Page: 1,
        Fruits: []string{"apple", "peach", "pear"},
    }
    res2B, _:= json.Marshal(res2D)
    fmt.Println(string(res2B))
    
    byt := []byte(`{"num":6.13, "str":["a", "b"]}`)
    
    var dat map[string]interface{}
    
    if err := json.Unmarshal(byt, &dat); err != nil {
        panic(err)
    }
    fmt.Println()
    
    os.Exit(0)
}