Liferay 回复留言板portlet中的线程后出错

在liferay portal 6.2 CE-GA2中，我使用了MessageBoards portlet。在这个portlet中，我创建了一个线程，然后回复该线程。每次回复后，我都会在

catalina.out

日志文件中看到这些消息：

 17:18:01,520 ERROR [http-bio-80-exec-575][IncludeTag:129] Current URL /web/knowledge-management/wiki/-/message_boards/message/109006 generates exception: null
    java.lang.NullPointerException
    at org.apache.jsp.html.portlet.message_005fboards.view_005fthread_005fmessage_jsp._jspService(view_005fthread_005fmessage_jsp.java:726)
    at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
    at com.liferay.portal.servlet.DirectRequestDispatcher.include(DirectRequestDispatcher.java:57)
    at com.liferay.portal.servlet.ClassLoaderRequestDispatcherWrapper.doDispatch(ClassLoaderRequestDispatcherWrapper.java:78)
    at com.liferay.portal.servlet.ClassLoaderRequestDispatcherWrapper.include(ClassLoaderRequestDispatcherWrapper.java:53)
    at com.liferay.taglib.util.IncludeTag.include(IncludeTag.java:295)
    at com.liferay.taglib.util.IncludeTag.doInclude(IncludeTag.java:192)
    at com.liferay.taglib.util.IncludeTag.doEndTag(IncludeTag.java:83)
    at org.apache.jsp.html.portlet.message_005fboards.view_005fmessage_005fcontent_jsp._jspx_meth_liferay_002dutil_005finclude_005f0(view_005fmessage_005fcontent_jsp.java:2972)
    at org.apache.jsp.html.portlet.message_005fboards.view_005fmessage_005fcontent_jsp._jspService(view_005fmessage_005fcontent_jsp.java:2322)
    at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
    at com.liferay.portal.servlet.DirectRequestDispatcher.include(DirectRequestDispatcher.java:57)
    at com.liferay.portal.servlet.ClassLoaderRequestDispatcherWrapper.doDispatch(ClassLoaderRequestDispatcherWrapper.java:78)
    at com.liferay.portal.servlet.ClassLoaderRequestDispatcherWrapper.include(ClassLoaderRequestDispatcherWrapper.java:53)
    at com.liferay.taglib.util.IncludeTag.include(IncludeTag.java:295)
    at com.liferay.taglib.util.IncludeTag.doInclude(IncludeTag.java:192)
    at com.liferay.taglib.util.IncludeTag.doEndTag(IncludeTag.java:83)
    at org.apache.jsp.html.portlet.message_005fboards.view_005fmessage_005fdefault_jsp._jspx_meth_liferay_002dutil_005finclude_005f0(view_005fmessage_005fdefault_jsp.java:1997)

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我如何解决这个问题？

这取决于您想深入到什么程度：您可以分析NullpointerException发生的位置，并查看是否存在易于修复的问题。您还可以检查issuetracker，以及此后对门户网站所做的提交，并将在更高版本中所做的任何修复（如果已经修复）返回

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这就引出了我的实际建议：我建议升级到最近发布的GA6，并检查它是否仍然存在。很可能这个问题已经解决很久了，一个简单的更新可以帮助你摆脱这个消息。如果它是固定的：党。如果没有：至少您使用的是最新版本，并且可能已经解决了一些安全问题（当然还有一些其他问题）

除了我的回答：请阅读本文并添加建议的信息：