Create a struct from a byte array - json

Question

I use the json.Marshal interface to accept a map[string]interface{} and convert it to a []byte (is this a byte array?)
data, _ := json.Marshal(value)
log.Printf("%s\n", data)
I get this output
{"email_address":"joe#me.com","street_address":"123 Anywhere Anytown","name":"joe","output":"Hello World","status":1}
The underlying bytes pertain to the struct of the below declaration
type Person struct {
Name string `json:"name"`
StreetAddress string `json:"street_address"`
Output string `json:"output"`
Status float64 `json:"status"`
EmailAddress string `json:"email_address",omitempty"`
}
I'd like to take data and generate a variable of type Person struct
How do I do that?

Answer 1

You use json.Unmarshal:
package main
import (
"encoding/json"
"fmt"
)
type Person struct {
Name string `json:"name"`
StreetAddress string `json:"street_address"`
Output string `json:"output"`
Status float64 `json:"status"`
EmailAddress string `json:"email_address",omitempty"`
}
func main() {
data := []byte(`{"email_address":"joe#me.com","street_address":"123 Anywhere Anytown","name":"joe","output":"Hello World","status":1}`)
var p Person
if err := json.Unmarshal(data, &p); err != nil {
panic(err)
}
fmt.Printf("%#v\n", p)
}
Output:
main.Person{Name:"joe", StreetAddress:"123 Anywhere Anytown", Output:"Hello World", Status:1, EmailAddress:"joe#me.com"}