我在发帖子的时候出现如下错误,好像是ForumMessageProxy里面一个方法出错,不知道怎么修改?但是帖子是可以预览正常的。

test_1
03-06-30 0 84

java.lang.NullPointerException
at com.jivesoftware.forum..isAnonymous(ForumMessageProxy.java:170)
at com.jivesoftware.forum.database.DbForum.addThread(DbForum.java:390)
at com.jivesoftware.forum.ForumProxy.addThread(ForumProxy.java:251)
at org.apache.jsp.post_jsp._jspService(post_jsp.java:343)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:137)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:210)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:295)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:256)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)