add json.go

Author: biancarosa

json.go

@@ -0,0 +1,29 @@
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"net/http"
+)
+
+type Greeting struct {
+	Message string `json:"msg"`
+}
+
+func hello(w http.ResponseWriter, r *http.Request) {
+	person := Greeting{Message: "Hello"}
+	jsonPerson, err := json.Marshal(person)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	w.Header().Set("Content-Type", "application/json")
+	w.Write(jsonPerson)
+}
+
+func main() {
+	http.HandleFunc("/", hello)
+	fmt.Println("Serving http...")
+	http.ListenAndServe(":8000", nil)
+}