Golang : Process json data with Jason package



Tags : golang jason json

While writing out the tutorial on how to read json data and save to csv, I was thinking ... somehow there must be a third party package out there that will make life easier.

Today, I found the package at https://github.com/antonholmquist/jason. The code below demonstrate how to use Jason package to create an object named Person easily for further manipulation.

 package main

 import (
 "bufio"
 "fmt"
 "github.com/antonholmquist/jason"
 "os"
 )


 func main() {
 // read data from file

 jsonDataFromFile, err := os.Open("./data.json")

 if err != nil {
 fmt.Println(err)
 os.Exit(1)
 }

 defer jsonDataFromFile.Close()

 reader := bufio.NewReader(jsonDataFromFile)
 scanner := bufio.NewScanner(reader)

 for scanner.Scan() {
 person, _ := jason.NewObjectFromBytes([]byte(scanner.Text()))


 name, _ := person.GetString("Name") //case sensitive
 age, _ := person.GetNumber("Age")
 job, _ := person.GetString("Job")

 fmt.Printf(" %s, %v job is %s\n", name, age, job)
 }

 }

Output :

Adam, 36 job is CEO

Eve, 34 job is CFO

Mike, 38 job is COO

Input from data.json file

 {"Name":"Adam","Age":36,"Job":"CEO"},
 {"Name":"Eve","Age":34,"Job":"CFO"},
 {"Name":"Mike","Age":38,"Job":"COO"}

Please see other functions to manipulate json data at https://github.com/antonholmquist/jason

References :

https://godoc.org/github.com/antonholmquist/jason

https://www.socketloop.com/tutorials/golang-read-a-file-line-by-line



Tags : golang jason json

By Adam Ng

IF you gain some knowledge or the information here solved your programming problem. Please consider donating to the less fortunate or some charities that you like. Apart from donation, planting trees, volunteering or reducing your carbon footprint will be great too.


Advertisement