回复留言板portlet中的线程后出错

Question

在liferay portal6.2CE-GA2中，我使用了留言板portlet。在此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日志文件中看到以下消息：

 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)

我该如何解决这个问题呢？

Answer 1

这取决于您想要深入到什么程度: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。您还可以检查从那时起对门户所做的问题攻击器和提交，并支持在更高版本中所做的任何修复(如果它已经修复)

如果它是固定的:派对。如果不是:至少您使用的是最新版本，并且在此过程中可能已经修复了一些安全问题(当然还有其他一些问题)。