Don't redirect to a string

Author: labkey-adam

flow/src/org/labkey/flow/controllers/FlowController.java

@@ -46,6 +46,7 @@
 import org.labkey.api.util.FileUtil;
 import org.labkey.api.util.JobRunner;
 import org.labkey.api.util.TestContext;
+import org.labkey.api.util.URLHelper;
 import org.labkey.api.view.ActionURL;
 import org.labkey.api.view.HttpView;
 import org.labkey.api.view.JspView;
@@ -72,8 +73,6 @@
 import org.springframework.validation.Errors;
 import org.springframework.web.servlet.ModelAndView;
 
-import java.net.URI;
-
 @Marshal(Marshaller.Jackson)
 public class FlowController extends BaseFlowController
 {
@@ -367,8 +366,8 @@ public class SavePreferencesAction extends SimpleViewAction<Object>
         public ModelAndView getView(Object o, BindException errors) throws Exception
         {
             FlowPreference.update(getRequest());
-            URI uri = new URI(getRequest().getContextPath() + "/_.gif");
-            return HttpView.redirect(uri.toString());
+            URLHelper url = new URLHelper(getRequest().getContextPath() + "/_.gif");
+            return HttpView.redirect(url, false);
         }
 
         @Override