json_decode_test2.go

package main

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

func main() {
        type User struct {
                ObjectId, SessionToken, Username string
        }

        fileReader, err := os.Open("_User.json")

        if err != nil {
                panic(err)
        }
        defer fileReader.Close()
        dec := json.NewDecoder(fileReader)

        // read open bracket
        for {
                t, err := dec.Token()
                if err != nil {
                        panic(err)
                }

                d, ok := t.(json.Delim)
                if ok && d.String() == "[" {
                        break
                }
        }

        var m User
        // while the array contains values
        for dec.More() {

                // decode an array value (User)
                err := dec.Decode(&m)
                if err != nil {
                        panic(err)
                }
                fmt.Printf("%v: %v: %v\n", m.ObjectId, m.Username, m.SessionToken)
        }

}