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https://github.com/golang/go
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289a357104
Originally published on The Go Programming Language Blog, January 25, 2011. http://blog.golang.org/2011/01/json-and-go.html R=adg CC=golang-dev https://golang.org/cl/5846044
74 lines
1.2 KiB
Go
74 lines
1.2 KiB
Go
// Copyright 2012 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package main
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import (
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"encoding/json"
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"fmt"
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"log"
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"reflect"
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)
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func Decode() {
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b := []byte(`{"Name":"Wednesday","Age":6,"Parents":["Gomez","Morticia"]}`)
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var f interface{}
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err := json.Unmarshal(b, &f)
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// STOP OMIT
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if err != nil {
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panic(err)
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}
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expected := map[string]interface{}{
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"Name": "Wednesday",
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"Age": float64(6),
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"Parents": []interface{}{
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"Gomez",
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"Morticia",
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},
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}
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if !reflect.DeepEqual(f, expected) {
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log.Panicf("Error unmarshalling %q, expected %q, got %q", b, expected, f)
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}
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f = map[string]interface{}{
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"Name": "Wednesday",
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"Age": 6,
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"Parents": []interface{}{
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"Gomez",
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"Morticia",
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},
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}
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// STOP OMIT
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m := f.(map[string]interface{})
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for k, v := range m {
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switch vv := v.(type) {
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case string:
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fmt.Println(k, "is string", vv)
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case int:
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fmt.Println(k, "is int", vv)
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case []interface{}:
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fmt.Println(k, "is an array:")
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for i, u := range vv {
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fmt.Println(i, u)
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}
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default:
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fmt.Println(k, "is of a type I don't know how to handle")
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}
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}
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// STOP OMIT
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}
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func main() {
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Decode()
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}
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