太好了，我逐漸開始理解一切（並不）

srv/cmd/gatekeeper/main.go

@@ -1,11 +1,16 @@
 package main
 
 import (
-	"Crimson-Gatekeeper/internal/application"
+	"net/http"
 
 	"github.com/go-spring/spring-core/gs"
 )
 
+type Test struct{}
+
 func main() {
-	gs.Provide(application.New).AsServer()
+	http.HandleFunc("/echo", func(w http.ResponseWriter, r *http.Request) {
+		w.Write([]byte("hello world!"))
+	})
+	gs.Run()
 }