Go : Convert type/struct to json byte array

Step 1: Create a type Employee

type Employee struct {

         FirstName string

         LastName  string

         ID        int

}

Step 2: Create an object of type Employee

emp := Employee{FirstName: "Krishna", LastName: "Gurram", ID: 123}

Step 3: Call json.Marshal function to convert given object to byte array

empBytes, err := json.Marshal(emp)

Find the below working application.

App.go

package main

import (
 "encoding/json"
 "fmt"
)

//Employee represent an employee object
type Employee struct {
 FirstName string
 LastName  string
 ID        int
}

func main() {

 //Step 1: Create an object of type Employee
 emp := Employee{FirstName: "Krishna", LastName: "Gurram", ID: 123}

 //Step 2: Call json.Marshal function to convert given object to byte array
 empBytes, err := json.Marshal(emp)

 if err != nil {
  fmt.Println("Can't marshal emp")
  return
 }

 fmt.Println(empBytes)

}

Output

[123 34 70 105 114 115 116 78 97 109 101 34 58 34 75 114 105 115 104 110 97 34 44 34 76 97 115 116 78 97 109 101 34 58 34 71 117 114 114 97 109 34 44 34 73 68 34 58 49 50 51 125]

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