I am trying to convert a Go struct to JSON using the json
package but all I get is {}
. I am certain it is something totally obvious but I don't see it.
package main
import (
"fmt"
"encoding/json"
)
type User struct {
name string
}
func main() {
user := &User{name:"Frank"}
b, err := json.Marshal(user)
if err != nil {
fmt.Printf("Error: %s", err)
return;
}
fmt.Println(string(b))
}
Then when I try to run it I get this:
$ 6g test.go && 6l -o test test.6 && ./test
{}
You need to export the User.name
field so that the json
package can see it. Rename the name
field to Name
.
package main
import (
"fmt"
"encoding/json"
)
type User struct {
Name string
}
func main() {
user := &User{Name: "Frank"}
b, err := json.Marshal(user)
if err != nil {
fmt.Println(err)
return
}
fmt.Println(string(b))
}
Output:
{"Name":"Frank"}