fix: cmd http embed message path generate (#1561)

fix: cmd http embed message path generate (#1561)

cmd/protoc-gen-go-http/http.go

@@ -160,16 +160,22 @@ func buildMethodDesc(g *protogen.GeneratedFile, m *protogen.Method, method, path
 	vars := buildPathVars(m, path)
 	fields := m.Input.Desc.Fields()
 	for _, v := range vars {
-		fd := fields.ByName(protoreflect.Name(v))
+		for _, field := range strings.Split(v, ".") {
+			if strings.TrimSpace(field) == "" {
+				continue
+			}
+			fd := fields.ByName(protoreflect.Name(field))
 			if fd == nil {
 				fmt.Fprintf(os.Stderr, "\u001B[31mERROR\u001B[m: The corresponding field '%s' declaration in message could not be found in '%s'\n", v, path)
 				os.Exit(2)
 			}
 			if fd.IsMap() {
 				fmt.Fprintf(os.Stderr, "\u001B[31mWARN\u001B[m: The field in path:'%s' shouldn't be a map.\n", v)
-		}
-		if fd.IsList() {
+			} else if fd.IsList() {
 				fmt.Fprintf(os.Stderr, "\u001B[31mWARN\u001B[m: The field in path:'%s' shouldn't be a list.\n", v)
+			} else if fd.Kind() == protoreflect.MessageKind || fd.Kind() == protoreflect.GroupKind {
+				fields = fd.Message().Fields()
+			}
 		}
 	}
 	return &methodDesc{