我想以编程方式在liferay中添加网站，因此我创建了一个portlet，它负责以编程方式添加网站，但它不起作用所以请任何人都可以帮助我。我点击创建网站时收到的错误是Portlet is temporarily unavailable。
这是我的代码：
<%@page import="javax.portlet.PortletPreferences"%>
<%@page import="com.liferay.portal.kernel.util.ParamUtil"%>
<%@page import="com.liferay.portal.kernel.util.HtmlUtil"%>
<%@page import="com.liferay.portal.kernel.util.StringPool"%>
<%@page import="com.liferay.portal.kernel.util.UnicodeProperties"%>
<%@page import="com.liferay.portal.service.LayoutSetPrototypeServiceUtil"%>
<%@page import="com.liferay.portal.model.LayoutSetPrototype"%>
<%@page import="com.liferay.portal.service.GroupLocalServiceUtil"%>
<%@page import="java.util.List"%>
<%@page import="com.liferay.portal.kernel.bean.BeanParamUtil"%>
<%@page import="com.liferay.portal.theme.ThemeDisplay"%>
<%@page import="com.liferay.portal.model.Group"%>
<%@page import="com.liferay.portal.kernel.util.WebKeys"%>
<%@ taglib uri="http://java.sun.com/portlet_2_0" prefix="portlet" %>
<%@ taglib uri="http://alloy.liferay.com/tld/aui" prefix="aui" %>
<%@ taglib uri="http://liferay.com/tld/theme" prefix="theme"%>
<%@taglib uri="http://liferay.com/tld/ui" prefix="liferay-ui" %>
<%@taglib uri="http://alloy.liferay.com/tld/aui" prefix="aui" %>
<%@taglib uri="http://liferay.com/tld/portlet" prefix="liferay-portlet" %>
<portlet:defineObjects />
<theme:defineObjects/>
<%
PortletPreferences commonpref = renderRequest.getPreferences();
String commonvalue = (String)commonpref.getValue("commonvalue", "Hello! Welcome to our portal.");
//Group group = (Group)request.getAttribute("site.group");
//Group liveGroup = (Group)request.getAttribute("site.liveGroup");
LayoutSetPrototype layoutSetPrototype = (LayoutSetPrototype)request.getAttribute("site.layoutSetPrototype");
//boolean showPrototypes = GetterUtil.getBoolean(request.getAttribute("site.showPrototypes"));
long companyid=company.getCompanyId();
String languageid=user.getLanguageId();
long liveGroupId = 0;
//Group group = (Group)request.getAttribute(WebKeys.);
List<Group> objgroup=GroupLocalServiceUtil.getGroups(0, GroupLocalServiceUtil.getGroupsCount());
Group group=objgroup.get(0);
long groupId = BeanParamUtil.getLong(group, request, "groupId");
System.out.println("Here are group :"+group);
Group stagingGroup = null;
Group liveGroup = null;
if (group != null) {
if (group.isStagingGroup()) {
liveGroup = group.getLiveGroup();
stagingGroup = group;
}
else {
liveGroup = group;
if (group.hasStagingGroup()) {
stagingGroup = group.getStagingGroup();
}
}
}
liveGroupId = liveGroup.getGroupId();
System.out.println("Here are livegroup id :"+liveGroupId);
request.setAttribute("group", group);
%>
<%=commonvalue %>
<portlet:actionURL var="creatURL" name="Create">
<portlet:param name="viewJSP" value="/html/sites/view.jsp"> </portlet:param>
</portlet:actionURL>
<aui:form action="<%=creatURL %>" method="post">
<liferay-ui:error key="sitename" message="The site you has enter already eits" />
<aui:input name="commonvalue" type="hidden" value="<%=commonvalue %>"/>
<aui:input name="liveGroupId" type="hidden" value="<%=liveGroupId%>" />
<aui:input name="companyid" type="hidden" value="<%=companyid%>" />
<aui:input name="languageid" type="hidden" value="<%=languageid%>" />
<aui:input name="groupId" type="hidden" value="<%= groupId %>" />
<aui:input name="group" type="hidden" value="<%= group %>" />
<aui:input name="sitename" label="Enter Site" type="text" value="">
<aui:validator name="required"></aui:validator></aui:input>
<aui:input name="discription" label="Enter site discription" type="textarea" value="">
</aui:input>
<aui:button type="submit" value="Create site" ></aui:button>
</aui:form>
＆安培;这是我的Sites.java，它是一个动作文件：
package com.test;
import java.io.IOException;
import java.util.List;
import javax.portlet.ActionRequest;
import javax.portlet.ActionResponse;
import javax.portlet.PortletModeException;
import javax.portlet.ReadOnlyException;
import javax.portlet.ValidatorException;
import javax.portlet.WindowStateException;
import com.liferay.portal.kernel.exception.SystemException;
import com.liferay.portal.kernel.servlet.SessionErrors;
import com.liferay.portal.kernel.util.HtmlUtil;
import com.liferay.portal.kernel.util.ParamUtil;
import com.liferay.portal.kernel.util.StringPool;
import com.liferay.portal.kernel.util.UnicodeProperties;
import com.liferay.portal.model.Group;
import com.liferay.portal.model.LayoutConstants;
import com.liferay.portal.model.LayoutSet;
import com.liferay.portal.model.LayoutSetPrototype;
import com.liferay.portal.service.GroupServiceUtil;
import com.liferay.portal.service.GroupLocalServiceUtil;
import com.liferay.portal.service.LayoutServiceUtil;
import com.liferay.portal.service.LayoutSetLocalServiceUtil;
import com.liferay.portal.service.LayoutSetPrototypeServiceUtil;
import com.liferay.portal.service.ServiceContext;
import com.liferay.portal.service.ServiceContextFactory;
import com.liferay.portlet.documentlibrary.service.DLFileEntryLocalServiceUtil;
import javax.portlet.PortletPreferences;
//import com.liferay.portlet.sites.util.SitesUtil;
import com.liferay.util.bridges.mvc.MVCPortlet;
/**
* Portlet implementation class Sites
*/
public class Sites extends MVCPortlet {
public void fiveplan(ActionRequest fiveplanrequest,ActionResponse fiveplanresponse) throws ReadOnlyException, ValidatorException, IOException, PortletModeException, WindowStateException
{
String fiveplane=fiveplanrequest.getParameter("basicplan");
PortletPreferences fiveplanpref=fiveplanrequest.getPreferences();
if(fiveplane !=null)
{
fiveplanpref.setValue("commonvalue", fiveplane);
fiveplanpref.store();
fiveplanresponse.setRenderParameter("jspPage","/html/sites/view.jsp");
}
}
public void Create(ActionRequest actionRequest ,ActionResponse res) throws Exception
{
try {
String sitename=actionRequest.getParameter("sitename");
String findsitename="";
List<Group> siteobj=GroupLocalServiceUtil.getGroups(0, GroupLocalServiceUtil.getGroupsCount());
for(int k=0;k<siteobj.size();k++)
{
if(sitename.equals(siteobj.get(k).getName()))
{
//SessionErrors.add(actionRequest, "sitename");
findsitename=siteobj.get(k).getName();
}
}
String commonvalue=actionRequest.getParameter("commonvalue");
long liveGroupId = Long.parseLong(actionRequest.getParameter("liveGroupId"));
long companyid=Long.parseLong(actionRequest.getParameter("companyid"));
String languageid=actionRequest.getParameter("languageid");
String discription=actionRequest.getParameter("discription");
System.out.println("Here is domain name"+sitename);
System.out.println("Here is group name"+liveGroupId);
int type = ParamUtil.getInteger(actionRequest, "type");
String friendlyURL = ParamUtil.getString(actionRequest, "friendlyURL");
System.out.println("Friendlay URL is :"+friendlyURL);
ServiceContext serviceContext = ServiceContextFactory.getInstance(Group.class.getName(), actionRequest);
Group liveGroup = null;
String oldFriendlyURL = null;
String oldStagingFriendlyURL = null;
long privateLayoutSetPrototypeId = ParamUtil.getLong(actionRequest, "privateLayoutSetPrototypeId");
long publicLayoutSetPrototypeId = ParamUtil.getLong(actionRequest, "publicLayoutSetPrototypeId");
System.out.println("Here are private id: :"+privateLayoutSetPrototypeId);
System.out.println("Here are public id: :"+publicLayoutSetPrototypeId);
System.out.println("Here are servicecontext id: :"+serviceContext);
ServiceContext serviceContexta = new ServiceContext();
Group liveGroups = null;
List<LayoutSetPrototype> layoutSetPrototypes = LayoutSetPrototypeServiceUtil.search(companyid, Boolean.TRUE, null);
String uuid=null;
for (LayoutSetPrototype curLayoutSetPrototype : layoutSetPrototypes)
{
UnicodeProperties settingsProperties = curLayoutSetPrototype.getSettingsProperties();
String servletContextName = settingsProperties.getProperty("customJspServletContextName", StringPool.BLANK);
String name=HtmlUtil.escape(curLayoutSetPrototype.getName(languageid));
System.out.println("hi this is :"+ curLayoutSetPrototype.getLayoutSetPrototypeId());
if(commonvalue.equals(name))
{
uuid= curLayoutSetPrototype.getUuid();
}
name="";
}
if(!uuid.equals(""))
{
if(findsitename.equals(""))
{
GroupServiceUtil.addGroup(sitename,discription, 1, friendlyURL, true, true ,serviceContext);
Group groupobj=GroupLocalServiceUtil.fetchGroup(companyid, sitename);
long groupid=groupobj.getGroupId();
System.out.println("Site is creates");
LayoutSet layoutsets=LayoutSetLocalServiceUtil.getLayoutSet(groupid,false);
layoutsets.setLayoutSetId(layoutsets.getLayoutSetId());
layoutsets.setGroupId(layoutsets.getGroupId());
layoutsets.setCompanyId(layoutsets.getCompanyId());
layoutsets.setCreateDate(layoutsets.getCreateDate());
layoutsets.setModifiedDate(layoutsets.getModifiedDate());
layoutsets.setPrivateLayout(layoutsets.getPrivateLayout());
layoutsets.setLogo(layoutsets.getLogo());
layoutsets.setLogoId(layoutsets.getLogoId());
layoutsets.setThemeId(layoutsets.getThemeId());
layoutsets.setColorSchemeId(layoutsets.getColorSchemeId());
layoutsets.setWapThemeId(layoutsets.getWapThemeId());
layoutsets.setWapColorSchemeId(layoutsets.getWapColorSchemeId());
layoutsets.setCss(layoutsets.getCss());
layoutsets.setPageCount(1);
layoutsets.setSettings(layoutsets.getSettings());
layoutsets.setLayoutSetPrototypeUuid(uuid);
layoutsets.setLayoutSetPrototypeLinkEnabled(true);
LayoutSetLocalServiceUtil.updateLayoutSet(layoutsets);
boolean privateLayout = ParamUtil.getBoolean(actionRequest, "privateLayout");
long parentLayoutId = ParamUtil.getLong(actionRequest, "parentLayoutId");
String name1 = ParamUtil.getString(actionRequest, "name", "home");
String title = StringPool.BLANK;
String description = StringPool.BLANK;
boolean hidden = false;
String friendlyURL1 = StringPool.BLANK;
ServiceContext serviceContext1 = ServiceContextFactory.getInstance(actionRequest);
System.out.println("Service cintext is "+serviceContext1);
System.out.println("Here are new site id"+groupid);
LayoutServiceUtil.addLayout(groupid, false ,parentLayoutId ,name1 ,title ,description ,LayoutConstants.TYPE_PORTLET ,false ,friendlyURL1,serviceContext);
res.setRenderParameter("jspPage", "/html/sites/view.jsp");
}
else
{
SessionErrors.add(actionRequest, "sitename");
}
}
}
catch (SystemException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
我的日志文件是：
13:08:51,568 ERROR [RuntimePageImpl-5][render_portlet_jsp:132] null
java.lang.NullPointerException
at com.test.Sites.Create(Sites.java:118)
at com.liferay.portal.kernel.portlet.LiferayPortlet.callActionMethod(LiferayPortlet.java:163)
at com.liferay.util.bridges.mvc.MVCPortlet.callActionMethod(MVCPortlet.java:249)
at com.liferay.portal.kernel.portlet.LiferayPortlet.processAction(LiferayPortlet.java:90)
at com.liferay.util.bridges.mvc.MVCPortlet.processAction(MVCPortlet.java:212)
at com.liferay.portlet.FilterChainImpl.doFilter(FilterChainImpl.java:71)
at com.liferay.portal.kernel.portlet.PortletFilterUtil.doFilter(PortletFilterUtil.java:48)
at com.liferay.portal.kernel.servlet.PortletServlet.service(PortletServlet.java:112)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilter.doFilter(InvokerFilter.java:119)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:748)
at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:604)
at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:543)
at com.liferay.portlet.InvokerPortletImpl.invoke(InvokerPortletImpl.java:583)
at com.liferay.portlet.InvokerPortletImpl.invokeAction(InvokerPortletImpl.java:628)
答案 0 :(得分：0)
您的问题似乎应该与行NullPointerException的{{1}}相关。
唯一可以为空的对象是if(!uuid.equals(""))。
查看您的代码，由于以下测试，uuid可能无法将任何内容分配给uuid。
在我看来，因为您正在测试if(commonvalue.equals(name))的空值，所以用uuid
String uuid=null;就足够了