我论坛安装好以后用TEST帐号发了一个贴，再回了两个贴，之后论坛首页就变成了一堆黄色错误提示，怎么刷新都用不了了 截取部分： FreeMarker template error! get(postTodayCache) failed on instance of com.jeecms.bbs.entity.BbsForum The problematic instruction: ---------- ==> if-else  [on line 90, column 43 in WEB-INF/user_base/jeebbs_com_www/template/bbs_forum/blue/sys_Index.html] ---------- Java backtrace for programmers: ---------- freemarker.template.TemplateModelException: get(postTodayCache) failed on instance of com.jeecms.bbs.entity.BbsForum at freemarker.ext.beans.BeanModel.get(BeanModel.java:223) at freemarker.core.Dot._getAsTemplateModel(Dot.java:76) at freemarker.core.Expression.getAsTemplateModel(Expression.java:89) at freemarker.core.ComparisonExpression.isTrue(ComparisonExpression.java:111) at freemarker.core.IfBlock.accept(IfBlock.java:80) at freemarker.core.Environment.visit(Environment.java:209) at freemarker.core.MixedContent.accept(MixedContent.java:92) at freemarker.core.Environment.visit(Environment.java:209) at freemarker.core.IteratorBlock$Context.runLoop(IteratorBlock.java:167) at freemarker.core.Environment.visit(Environment.java:416) at freemarker.core.IteratorBlock.accept(IteratorBlock.java:102) at freemarker.core.Environment.visit(Environment.java:209) at freemarker.core.MixedContent.accept(MixedContent.java:92) at freemarker.core.Environment.visit(Environment.java:209) at freemarker.core.IteratorBlock$Context.runLoop(IteratorBlock.java:167) at freemarker.core.Environment.visit(Environment.java:416) at freemarker.core.IteratorBlock.accept(IteratorBlock.java:102) at freemarker.core.Environment.visit(Environment.java:209) at freemarker.core.MixedContent.accept(MixedContent.java:92) at freemarker.core.Environment.visit(Environment.java:209) at freemarker.core.Environment.process(Environment.java:189) at freemarker.template.Template.process(Template.java:237) at org.apache.struts2.views.freemarker.FreemarkerResult.doExecute(FreemarkerResult.java:187) at org.apache.struts2.dispatcher.StrutsResultSupport.execute(StrutsResultSupport.java:186) at com.opensymphony.xwork2.DefaultActionInvocation.executeResult(DefaultActionInvocation.java:361) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:265) at com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:126) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236) at com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:176) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236) at org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:52) at com.opensymphony.xwork2.ActionChainResult.execute(ActionChainResult.java:222) at com.opensymphony.xwork2.DefaultActionInvocation.executeResult(DefaultActionInvocation.java:361) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:265) at com.ponyjava.common.struts2.interceptor.UrlInterceptor.doIntercept(UrlInterceptor.java:91) at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236) at com.jeecms.core.web.CookieIdentityInterceptor.doIntercept(CookieIdentityInterceptor.java:59) at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236) at com.ponyjava.common.struts2.interceptor.DomainNameInterceptor.doIntercept(DomainNameInterceptor.java:24) at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236) at com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:176) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236) at com.ponyjava.common.struts2.interceptor.ProcessingStartInterceptor.intercept(ProcessingStartInterceptor.java:32) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236) at org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:52) at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:532) at org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:395) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:198) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:852) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489) at java.lang.Thread.run(Unknown Source) Caused by: java.lang.reflect.InvocationTargetException at sun.reflect.GeneratedMethodAccessor1343.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at freemarker.ext.beans.BeansWrapper.invokeMethod(BeansWrapper.java:840) at freemarker.ext.beans.BeanModel.invokeThroughDescriptor(BeanModel.java:276) at freemarker.ext.beans.BeanModel.get(BeanModel.java:183) ... 65 more Caused by: java.lang.NullPointerException at com.jeecms.bbs.cache.BbsForumCacheSvcImpl.get(BbsForumCacheSvcImpl.java:96) at com.jeecms.bbs.entity.BbsForum.getCacheBean(BbsForum.java:138) at com.jeecms.bbs.entity.BbsForum.getPostTodayCache(BbsForum.java:67) ... 71 more

我也遇到了同样的问题，版主快点来解答吧~！

这个是freemarker语法错误。if-else没配对的原因。是否你改动了模板的原因

没有更改模板文件啊，
 <td width="76" class="icon tac">[#if forum.postTodayCache gt 0]
          <div class="todaynew">${forum.postTodayCache}
          <p>今日</p>
          </div>
          [#else]
          <div class="today">0
          <p>今日</p>
          </div>
这样没有错吧，但是就是报错，重启tomcat之后，再打开首页又是可以的