Java 连接的用户出错

我的目标是在身份验证后恢复用户

我可以通过jsp页面进行检索

<%@ taglib uri="http://java.sun.com/portlet" prefix="portlet" %>
<%@ taglib uri="http://liferay.com/tld/theme" prefix="liferay-theme" %>
<%@ taglib uri="http://liferay.com/tld/ui" prefix="liferay-ui" %>

<liferay-theme:defineObjects />
<portlet:defineObjects />

<liferay-ui:user-display userId="<%= user.getUserId() %>" />

对于struts.xml文件

<? Xml version = "1.0" encoding = "UTF-8"?>
<! DOCTYPE struts PUBLIC
    "- / / Apache Software Foundation / / DTD Struts Configuration 2.0 / / EN"
    "Http://struts.apache.org/dtds/struts-2.0.dtd">

<struts>
<package name="view" extends="struts-portlet-default" namespace="/view">

<action name="initial class="com.test.action.testAction" method="">

<result name="AuthDirector"> / WEB-INF/view/HomeDirector.jsp </ result>

<result name="AuthoConsultantr"> / WEB-INF/view/HomeConsultant.jsp </ result>
</ Action>

</ Package>
</ Struts>

---

可能重复这个问题可能重复这个问题

<? Xml version = "1.0" encoding = "UTF-8"?>
<! DOCTYPE struts PUBLIC
    "- / / Apache Software Foundation / / DTD Struts Configuration 2.0 / / EN"
    "Http://struts.apache.org/dtds/struts-2.0.dtd">

<struts>
<package name="view" extends="struts-portlet-default" namespace="/view">

<action name="initial class="com.test.action.testAction" method="">

<result name="AuthDirector"> / WEB-INF/view/HomeDirector.jsp </ result>

<result name="AuthoConsultantr"> / WEB-INF/view/HomeConsultant.jsp </ result>
</ Action>

</ Package>
</ Struts>

import javax.faces.context.ExternalContext;
import javax.faces.context.FacesContext;
import com.liferay.portal.model.User;
public class extends testAction ActionSupport {


  private User user;

FacesContext fc = FacesContext.getCurrentInstance();
         ExternalContext externalContext = fc.getExternalContext();
         Long id = Long.parseLong(externalContext.getUserPrincipal().getName());

public String initial() throws Exception {

user = UserLocalServiceUtil.getUserById(id);
if (user.getRole (). equals ("director"))
return "AuthDirector";

return "AuthoConsultant";
    }


}