liferay在自己的portlet中上传更改用户头像

<%
User selUser = PortalUtil.getSelectedUser(request);
selUser =  PortalUtil.getUser(request);
String currentURL = PortalUtil.getCurrentURL(request);
long maxFileSize = PrefsPropsUtil.getLong(PropsKeys.UPLOAD_SERVLET_REQUEST_IMPL_MAX_SIZE) / 1024;
%>
<liferay-portlet:renderURL portletName="<%=PortletKeys.MY_ACCOUNT %>" windowState="<%= LiferayWindowState.POP_UP.toString() %>" var="editPortraitURL">
  <portlet:param name="struts_action" value="/my_account/edit_user_portrait" />
  <portlet:param name="redirect" value="<%= currentURL %>" />
  <portlet:param name="p_u_i_d" value="${user.userId }" />
  <portlet:param name="portrait_id" value="${user.portraitId }" />
</liferay-portlet:renderURL> 
<liferay-ui:logo-selector
	defaultLogoURL="<%= UserConstants.getPortraitURL(themeDisplay.getPathImage(), selUser.isMale(), 0) %>"
	editLogoURL="<%= editPortraitURL %>"
	imageId="<%= selUser.getPortraitId() %>"
	logoDisplaySelector=".user-logo"
/>
<aui:script>
function _2_changeLogo(newPortraitURL, newPortraitId) {

    <portlet:namespace/>portraitId_var = newPortraitId;
    
    var A = AUI();

    A.one('#igva_null_null_avatar').attr('src', newPortraitURL);
    A.one('.avatar').attr('src', newPortraitURL);
    //A.one('#_2_deletePortrait').val(false);

}
	$('.delete-logo').hide();
</aui:script>