bson_to_json.go

// Given a bson MongoDB query
q := bson.M{
        "$match": bson.M{
                "skill": bson.M{
                        "$regex":   "^cookie",
                        "$options": "-i",
                },
        },
}
// The following script will convert it into JSON
output, err := bson.Marshal(q)
var decodedBson bson.M
bson.Unmarshal(output, &decodedBson)
output, err = json.Marshal(decodedBson)
fmt.Println("JSON", string(output))
if err != nil {
        panic(err)
}