db using configuration instead of hardcode

config.go

 	LeanWork struct {
 		MD5Key string `json:MD5Key`
 	} `json:LeanWork`
+	DB struct {
+		Driver string `json:Driver`
+		User   string `json:User`
+		Pass   string `json:Pass`
+		Schema string `json:Schema`
+	} `json:DB`
 }
 
 var Config AppConfig

config.json

     },
     "LeanWork" :{
          "MD5Key"   :  "492815086935204" 
-    }
+    },
+    "DB" :{
+     "Driver": "mysql",
+     "User"  : "sp",
+     "Pass"  : "sp",
+     "Schema": "goblog"
+ }    
 }

config.test.json

     },
     "LeanWork" :{
          "MD5Key"   :  "492815086935204" 
+    },
+    "DB" :{
+        "Driver": "mysql",
+        "User"  : "sp",
+        "Pass"  : "sp",
+        "Schema": "goblog"
     }
 }

db.go

 	"log"
 	"net/http"
 	"text/template"
+
+	_ "github.com/go-sql-driver/mysql"
 )
 
 type Employee struct {
 }
 
 func dbConn() (db *sql.DB) {
-	dbDriver := "mysql"
-	dbUser := "sp"
-	dbPass := "sp"
-	dbName := "goblog"
+	dbDriver := Config.DB.Driver
+	dbUser := Config.DB.User
+	dbPass := Config.DB.Pass
+	dbName := Config.DB.Schema
 	db, err := sql.Open(dbDriver, dbUser+":"+dbPass+"@/"+dbName)
 	if err != nil {
 		panic(err.Error())

main.go

 import (
 	"log"
 	"net/http"
-
-	_ "github.com/go-sql-driver/mysql"
 )
 
 func main() {
 	readConfig()
 	log.Println("Server started on: http://localhost:8080")
-	http.HandleFunc("/", StartPay)
+	//http.HandleFunc("/", StartPay)
 
-	//http.HandleFunc("/", Index)
-	// http.HandleFunc("/show", Show)
-	// http.HandleFunc("/new", New)
-	// http.HandleFunc("/edit", Edit)
-	// http.HandleFunc("/insert", Insert)
-	// http.HandleFunc("/update", Update)
-	// http.HandleFunc("/delete", Delete)
+	http.HandleFunc("/", Index)
+	http.HandleFunc("/show", Show)
+	http.HandleFunc("/new", New)
+	http.HandleFunc("/edit", Edit)
+	http.HandleFunc("/insert", Insert)
+	http.HandleFunc("/update", Update)
+	http.HandleFunc("/delete", Delete)
 	http.ListenAndServe(":8080", nil)
 }

purchase.go

 
 func StartPay(w http.ResponseWriter, r *http.Request) {
 	if r.Method != "POST" {
-		fmt.Fprintf(w, "fuck")
+		fmt.Fprintf(w, "invalid request")
 		return
 	}
 	r.ParseForm()