试过直接用portlet和struts2 portlet都能行，但是唯独struts1不行，我的配置文件如下：

portlet.xml

<?xml version="1.0"?>

<portlet-app
version="2.0"
xmlns="http://java.sun.com/xml/ns/portlet/portlet-app_2_0.xsd"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/portlet/portlet-app_2_0.xsd http://java.sun.com/xml/ns/portlet/portlet-app_2_0.xsd"
>

portlet.xml

<portlet>
<portlet-name>strutsportlet</portlet-name>
<display-name>StrutsPortlet</display-name>
<portlet-class>com.liferay.portlet.StrutsPortlet</portlet-class>
<init-param>
<name>view-action</name>
<value>/hellostruts_portlet/viewp</value>
</init-param>
<expiration-cache>0</expiration-cache>
<supports>
<mime-type>text/html</mime-type>
<portlet-mode>VIEW</portlet-mode>
</supports>
<portlet-info>
<title>StrutsPortlet</title>
<short-title>StrutsPortlet</short-title>
<keywords></keywords>
</portlet-info>
<security-role-ref>
<role-name>administrator</role-name>
</security-role-ref>
<security-role-ref>
<role-name>guest</role-name>
</security-role-ref>
<security-role-ref>
<role-name>power-user</role-name>
</security-role-ref>
<security-role-ref>
<role-name>user</role-name>
</security-role-ref>
</portlet>
</portlet-app>

liferay-portlet.xml

<portlet>
<portlet-name>strutsportlet</portlet-name>
<icon>/icon.png</icon>
<instanceable>true</instanceable>
<header-portlet-css>/css/portlet.css</header-portlet-css>
<footer-portlet-javascript>
/js/javascript.js
</footer-portlet-javascript>
<css-class-wrapper>strutsportlet-portlet</css-class-wrapper>
</portlet>
<role-mapper>
<role-name>administrator</role-name>
<role-link>Administrator</role-link>
</role-mapper>
<role-mapper>
<role-name>guest</role-name>
<role-link>Guest</role-link>
</role-mapper>
<role-mapper>
<role-name>power-user</role-name>
<role-link>Power User</role-link>
</role-mapper>
<role-mapper>
<role-name>user</role-name>
<role-link>User</role-link>
</role-mapper>

liferay-display.xml[/color]

<portlet id="strutsportlet"></portlet>



[color=red]struts-config.xml

<?xml version="1.0"?>
<!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.2//EN" "http://jakarta.apache.org/struts/dtds/struts-config_1_2.dtd">

<struts-config>
    <action-mappings>
       <action path="/hellostruts_portlet/view" type="demo.StrutsPortlet" forward="portlet.hellostruts_portlet.view" />   
    </action-mappings>
       
    <plug-in className="org.apache.struts.tiles.TilesPlugin">
        <set-property property="definitions-config" value="/WEB-INF/tiles-defs.xml"/>
        <set-property property="moduleAware" value="true"/>
        <set-property property="definitions-parser-validate" value="true"/>
    </plug-in>
</struts-config>

tiles-defs.xml

<?xml version="1.0"?>
<!DOCTYPE tiles-definitions PUBLIC "-//Apache Software Foundation//DTD Tiles Configuration 1.1//EN" "http://jakarta.apache.org/struts/dtds/tiles-config_1_1.dtd">
                                  
<tiles-definitions>     
   
    <definition name="portlet.hellostruts_portlet" path="/strutsportlet/view.jsp" />
   
    <definition name="portlet.hellostruts_portlet.view" extends="portlet.hellostruts_portlet">
        <put name="portlet_content" value="/strutsportlet/view.jsp"/>
    </definition>
</tiles-definitions>

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
<servlet>
<servlet-name>PortletActionServlet</servlet-name>
<servlet-class>com.liferay.portal.struts.PortletActionServlet</servlet-class>
<init-param>
<param-name>config</param-name>
<param-value>/WEB-INF/struts-config.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>PortletActionServlet</servlet-name>
<url-pattern>/portlet_action/*</url-pattern>
</servlet-mapping>

<jsp-config>
<taglib>
<taglib-uri>http://struts.apache.org/tags-bean</taglib-uri>
<taglib-location>/WEB-INF/tld/struts-bean.tld</taglib-location>
</taglib>
<taglib>
<taglib-uri>http://struts.apache.org/tags-bean-el</taglib-uri>
<taglib-location>/WEB-INF/tld/struts-bean-el.tld</taglib-location>
</taglib>
<taglib>
<taglib-uri>http://struts.apache.org/tags-html</taglib-uri>
<taglib-location>/WEB-INF/tld/struts-html.tld</taglib-location>
</taglib>
<taglib>
<taglib-uri>http://struts.apache.org/tags-html-el</taglib-uri>
<taglib-location>/WEB-INF/tld/struts-html-el.tld</taglib-location>
</taglib>
<taglib>
<taglib-uri>http://struts.apache.org/tags-logic</taglib-uri>
<taglib-location>/WEB-INF/tld/struts-logic.tld</taglib-location>
</taglib>
<taglib>
<taglib-uri>http://struts.apache.org/tags-logic-el</taglib-uri>
<taglib-location>/WEB-INF/tld/struts-logic-el.tld</taglib-location>
</taglib>
<taglib>
<taglib-uri>http://struts.apache.org/tags-nested</taglib-uri>
<taglib-location>/WEB-INF/tld/struts-nested.tld</taglib-location>
</taglib>
<taglib>
<taglib-uri>http://struts.apache.org/tags-tiles</taglib-uri>
<taglib-location>/WEB-INF/tld/struts-tiles.tld</taglib-location>
</taglib>
<taglib>
<taglib-uri>http://struts.apache.org/tags-tiles-el</taglib-uri>
<taglib-location>/WEB-INF/tld/struts-tiles-el.tld</taglib-location>
</taglib>
</jsp-config>
</web-app>

liferay-plugin-package.properties

name=MyPortlet
module-group-id=liferay
module-incremental-version=1
tags=
short-description=
change-log=
page-url=http://www.liferay.com
author=Liferay, Inc.
licenses=LGPL
portal-dependency-jars=\
    axis-ant.jar,\
    axis.jar,\
    wsdl4j.jar,\
    commons-logging.jar,\
    commons-discovery.jar,\
    jaxrpc.jar,\
    jstl-api.jar,\
    jstl-impl.jar,\
    struts-el.jar,\
    struts.jar,\
    portal-impl.jar
portal-dependency-tlds=\
    struts-bean-el.tld,\
    struts-bean.tld,\
    struts-html-el.tld,\
    struts-html.tld,\
    struts-logic-el.tld,\
    struts-logic.tld,\
    struts-nested.tld,\
    struts-tiles-el.tld,\
    struts-tiles.tld,\
    x.tld

demo.StrutsPortlet.java

public class StrutsPortlet extends PortletAction {

@Override
@Override
public ActionForward render(ActionMapping mapping, ActionForm form,
PortletConfig portletConfig, RenderRequest renderRequest,
RenderResponse renderResponse) throws Exception {
System.out.println("struts render...");
return super
.render(mapping, form, portletConfig, renderRequest, renderResponse);
}


无论我META-INF目录下是否有context.xml都是相同的错。

context.xml

<Context>
<Loader
loaderClass="com.liferay.support.tomcat.loader.PortalClassLoader" />
</Context>


错误如下：


log4j:ERROR Could not create an Appender. Reported error follows.
java.lang.ClassCastException: org.apache.log4j.ConsoleAppender cannot be cast to org.apache.log4j.Appender
at org.apache.log4j.xml.DOMConfigurator.parseAppender(DOMConfigurator.java:165)
at org.apache.log4j.xml.DOMConfigurator.findAppenderByName(DOMConfigurator.java:140)
at org.apache.log4j.xml.DOMConfigurator.findAppenderByReference(DOMConfigurator.java:153)
at org.apache.log4j.xml.DOMConfigurator.parseChildrenOfLoggerElement(DOMConfigurator.java:415)
at org.apache.log4j.xml.DOMConfigurator.parseRoot(DOMConfigurator.java:384)
at org.apache.log4j.xml.DOMConfigurator.parse(DOMConfigurator.java:783)
at org.apache.log4j.xml.DOMConfigurator.doConfigure(DOMConfigurator.java:666)
at org.apache.log4j.xml.DOMConfigurator.doConfigure(DOMConfigurator.java:616)
at org.apache.log4j.xml.DOMConfigurator.doConfigure(DOMConfigurator.java:602)
at org.apache.log4j.xml.DOMConfigurator.configure(DOMConfigurator.java:697)
at com.liferay.util.log4j.Log4JUtil.configureLog4J(Log4JUtil.java:48)
at com.liferay.portal.deploy.hot.PortletHotDeployListener.initLogger(PortletHotDeployListener.java:448)
at com.liferay.portal.deploy.hot.PortletHotDeployListener.doInvokeDeploy(PortletHotDeployListener.java:235)
at com.liferay.portal.deploy.hot.PortletHotDeployListener.invokeDeploy(PortletHotDeployListener.java:101)
at com.liferay.portal.kernel.deploy.hot.HotDeployUtil._doFireDeployEvent(HotDeployUtil.java:109)
at com.liferay.portal.kernel.deploy.hot.HotDeployUtil._fireDeployEvent(HotDeployUtil.java:182)
at com.liferay.portal.kernel.deploy.hot.HotDeployUtil.fireDeployEvent(HotDeployUtil.java:38)
at com.liferay.portal.kernel.servlet.HookContextListener.contextInitialized(HookContextListener.java:36)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3972)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4467)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:546)
at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:637)
at org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:563)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:498)
at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1345)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:303)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1337)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1601)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1610)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1590)
at java.lang.Thread.run(Thread.java:619)
log4j:ERROR Could not parse input source [org.xml.sax.InputSource@2a188b].
java.lang.NullPointerException
at java.util.Hashtable.put(Hashtable.java:394)
at org.apache.log4j.xml.DOMConfigurator.findAppenderByName(DOMConfigurator.java:141)
at org.apache.log4j.xml.DOMConfigurator.findAppenderByReference(DOMConfigurator.java:153)
at org.apache.log4j.xml.DOMConfigurator.parseChildrenOfLoggerElement(DOMConfigurator.java:415)
at org.apache.log4j.xml.DOMConfigurator.parseRoot(DOMConfigurator.java:384)
at org.apache.log4j.xml.DOMConfigurator.parse(DOMConfigurator.java:783)
at org.apache.log4j.xml.DOMConfigurator.doConfigure(DOMConfigurator.java:666)
at org.apache.log4j.xml.DOMConfigurator.doConfigure(DOMConfigurator.java:616)
at org.apache.log4j.xml.DOMConfigurator.doConfigure(DOMConfigurator.java:602)
at org.apache.log4j.xml.DOMConfigurator.configure(DOMConfigurator.java:697)
at com.liferay.util.log4j.Log4JUtil.configureLog4J(Log4JUtil.java:48)
at com.liferay.portal.deploy.hot.PortletHotDeployListener.initLogger(PortletHotDeployListener.java:448)
at com.liferay.portal.deploy.hot.PortletHotDeployListener.doInvokeDeploy(PortletHotDeployListener.java:235)
at com.liferay.portal.deploy.hot.PortletHotDeployListener.invokeDeploy(PortletHotDeployListener.java:101)
at com.liferay.portal.kernel.deploy.hot.HotDeployUtil._doFireDeployEvent(HotDeployUtil.java:109)
at com.liferay.portal.kernel.deploy.hot.HotDeployUtil._fireDeployEvent(HotDeployUtil.java:182)
at com.liferay.portal.kernel.deploy.hot.HotDeployUtil.fireDeployEvent(HotDeployUtil.java:38)
at com.liferay.portal.kernel.servlet.HookContextListener.contextInitialized(HookContextListener.java:36)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3972)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4467)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:546)
at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:637)
at org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:563)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:498)
at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1345)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:303)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1337)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1601)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1610)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1590)
at java.lang.Thread.run(Thread.java:619)


7:00:13,640 ERROR [PortletBagFactory:293] java.lang.ClassCastException: com.liferay.portlet.PortletConfigImpl cannot be cast to com.liferay.portlet.PortletConfigImpl
java.lang.ClassCastException: com.liferay.portlet.PortletConfigImpl cannot be cast to com.liferay.portlet.PortletConfigImpl
at com.liferay.portlet.StrutsPortlet.init(StrutsPortlet.java:164)
at com.liferay.portlet.InvokerPortletImpl.init(InvokerPortletImpl.java:245)
at com.liferay.portlet.PortletInstanceFactoryImpl.init(PortletInstanceFactoryImpl.java:216)
at com.liferay.portlet.PortletInstanceFactoryImpl.create(PortletInstanceFactoryImpl.java:139)
at com.liferay.portlet.PortletInstanceFactoryUtil.create(PortletInstanceFactoryUtil.java:40)
at com.liferay.portlet.PortletBagFactory.create(PortletBagFactory.java:290)
at com.liferay.portal.deploy.hot.PortletHotDeployListener.initPortlet(PortletHotDeployListener.java:456)
at com.liferay.portal.deploy.hot.PortletHotDeployListener.doInvokeDeploy(PortletHotDeployListener.java:253)
at com.liferay.portal.deploy.hot.PortletHotDeployListener.invokeDeploy(PortletHotDeployListener.java:101)
at com.liferay.portal.kernel.deploy.hot.HotDeployUtil._doFireDeployEvent(HotDeployUtil.java:109)
at com.liferay.portal.kernel.deploy.hot.HotDeployUtil._fireDeployEvent(HotDeployUtil.java:182)
at com.liferay.portal.kernel.deploy.hot.HotDeployUtil.fireDeployEvent(HotDeployUtil.java:38)
at com.liferay.portal.kernel.servlet.HookContextListener.contextInitialized(HookContextListener.java:36)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3972)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4467)
at org.apache.catalina.core.StandardContext.reload(StandardContext.java:3228)
at org.apache.catalina.loader.WebappLoader.backgroundProcess(WebappLoader.java:403)
at org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1309)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1601)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1610)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1610)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1590)
at java.lang.Thread.run(Thread.java:619)
07:00:15,656 INFO  [PortletHotDeployListener:374] 4 portlets for MyPortlet-portlet are available for use




我自己怀疑是因为liferay6.0以插件形式开发的portlet的war中，WEB-INF/lib 有的portal-impl.jar、log4j.jar  与共享
的classloader加载的类有冲突，不知道该如何解决,又或者是插件形式不能用struts1?

以前kernel.jar包没有了，它合并到service.jar中，所以对应的PortletAction没有对应的实现。