json_test.go

package main

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

type Programs struct {
	Programs []Program `json:"programs"`
}

type Program struct {
	Name         string   `json:"name"`
	FullName     string   `json:"fullName"`
	Description  string   `json:"description"`
	URL          string   `json:"url"`
	Alternatives []string `json:"alternatives"`
}

func main() {
	// Open jsonFile
	jsonFile, err := os.Open("programs.json")
	// handle error os.Open may return
	if err != nil {
		fmt.Println(err)
	}

	// defer the closing of our jsonFile so that we can parse it later on
	defer jsonFile.Close()

	// read opened jsonFile as a byte array.
	byteValue, _ := ioutil.ReadAll(jsonFile)

	//initialize programs array
	var programs Programs

	// unmarshal the byteArray from jsonFile
	json.Unmarshal(byteValue, &programs)

	// we iterate through every program within our programs array and
	// print out some attributes
	for i := 0; i < len(programs.Programs); i++ {
		fmt.Println("Name: " + programs.Programs[i].Name)
		fmt.Println("Full Name: " + programs.Programs[i].FullName)
		fmt.Println("Description: " + programs.Programs[i].Description)
		fmt.Println("URL: " + programs.Programs[i].URL)
		for j := 0; j < len(programs.Programs[i].Alternatives); j++ {
			fmt.Println("Alternatives: " + programs.Programs[i].Alternatives[j])
		}
		fmt.Println("---")
	}
}