Add default resolver to api router

api/router/options.go

@@ -2,6 +2,7 @@ package router
 
 import (
 	"github.com/micro/go-micro/v2/api/resolver"
+	"github.com/micro/go-micro/v2/api/resolver/vpath"
 	"github.com/micro/go-micro/v2/registry"
 )
 
@@ -23,6 +24,12 @@ func NewOptions(opts ...Option) Options {
 		o(&options)
 	}
 
+	if options.Resolver == nil {
+		options.Resolver = vpath.NewResolver(
+			resolver.WithHandler(options.Handler),
+		)
+	}
+
 	return options
 }