changed display function to POST method

api.go

@@ -37,7 +37,7 @@ func main() {
 	e.Static("/download", "img")
 	e.GET("/list", List)
 	e.DELETE("/delete/:img", Del)
-	e.GET("/display/:img", Display)
+	e.POST("/display/:img", Display)
 
 	err := e.Start(":4000")
 	if err != nil {