初始化项目结构

internal/controller/hello/hello_v1_hello.go

@@ -0,0 +1,13 @@
+package hello
+
+import (
+	"context"
+	"github.com/gogf/gf/v2/frame/g"
+
+	"server/api/hello/v1"
+)
+
+func (c *ControllerV1) Hello(ctx context.Context, req *v1.HelloReq) (res *v1.HelloRes, err error) {
+	g.RequestFromCtx(ctx).Response.Writeln("Hello World!")
+	return
+}