Add more validate conditions when run kubectl get with --raw

pkg/kubectl/cmd/resource/get.go

@@ -25,6 +25,8 @@ import (
 	"github.com/golang/glog"
 	"github.com/spf13/cobra"
 
+	"net/url"
+
 	kapierrors "k8s.io/apimachinery/pkg/api/errors"
 	"k8s.io/apimachinery/pkg/api/meta"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
@@ -213,6 +215,12 @@ func (options *GetOptions) Validate(cmd *cobra.Command) error {
 	if len(options.Raw) > 0 && (options.Watch || options.WatchOnly || len(options.LabelSelector) > 0 || options.Export) {
 		return fmt.Errorf("--raw may not be specified with other flags that filter the server request or alter the output")
 	}
+	if len(cmdutil.GetFlagString(cmd, "output")) > 0 {
+		return cmdutil.UsageErrorf(cmd, "--raw and --output are mutually exclusive")
+	}
+	if _, err := url.ParseRequestURI(options.Raw); err != nil {
+		return cmdutil.UsageErrorf(cmd, "--raw must be a valid URL path: %v", err)
+	}
 	if cmdutil.GetFlagBool(cmd, "show-labels") {
 		outputOption := cmd.Flags().Lookup("output").Value.String()
 		if outputOption != "" && outputOption != "wide" {