map[string]interface{} demo

package main

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

func demo1() {
    txt := `{"a":,"b":,"c":[{"name":"","group":""},{"name":"","group":""}]}`
    var m map[string]interface{}
    if err := json.Unmarshal([]byte(txt), &m); err != nil {
        panic(err)
    }
    for _, v := range m["c"].([]interface{}) {
        fmt.Println(v)
    }
}

func demo2() {
    txt := `{"a":,"b":,"c":[{"name":"","group":""},{"name":"","group":""}]}`
    var m map[string]interface{}
    if err := json.Unmarshal([]byte(txt), &m); err != nil {
        panic(err)
    }
    v := reflect.ValueOf(m["c"])
    count := v.Len()
    for i := ; i < count; i++ {
        fmt.Println(v.Index(i))
    }
}

func demo_all() {
    txt := `{"a":,"b":,"c":[{"name":"","group":""},{"name":"","group":""}]}`
    var m map[string]interface{}
    if err := json.Unmarshal([]byte(txt), &m); err != nil {
        panic(err)
    }
    for _, v := range m {
        fmt.Println(v)
    }
}

func main() {
    demo1()
    fmt.Println("====================")
    demo2()
    fmt.Println("====================")
    demo_all()
}

运行结果：

[root@wangjq ]# go run zzz.go
map[name: group:]
map[name: group:]
====================
map[group: name:]
map[name: group:]
====================

[map[name: group:] map[name: group:]]