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    FreeMarker template error (DEBUG mode; use RETHROW in production!): Java method "com.highcom.cms.service.CMSTemplateEngine.documents(String)" threw an exception when invoked on com.highcom.cms.service.CMSTemplateEngine object "com.highcom.cms.service.CMSTemplateEngine@1e12962"; see cause exception in the Java stack trace. ---- FTL stack trace ("~" means nesting-related): - Failed at: #list cms.documents("channel=机械工程学院_机... [in template "jxgcxy.htm" at line 388, column 1] ---- Java stack trace (for programmers): ---- freemarker.core._TemplateModelException: [... Exception message was already printed; see it above ...] at freemarker.ext.beans._MethodUtil.newInvocationTemplateModelException(_MethodUtil.java:311) at freemarker.ext.beans._MethodUtil.newInvocationTemplateModelException(_MethodUtil.java:284) at freemarker.ext.beans.OverloadedMethodsModel.exec(OverloadedMethodsModel.java:68) at freemarker.core.MethodCall._eval(MethodCall.java:62) at freemarker.core.Expression.eval(Expression.java:78) at freemarker.core.IteratorBlock.acceptWithResult(IteratorBlock.java:69) at freemarker.core.IteratorBlock.accept(IteratorBlock.java:64) at freemarker.core.Environment.visit(Environment.java:324) at freemarker.core.MixedContent.accept(MixedContent.java:54) at freemarker.core.Environment.visit(Environment.java:324) at freemarker.core.Environment.process(Environment.java:302) at freemarker.template.Template.process(Template.java:325) at com.highcom.cms.service.HTMLGenerator.generateHTML(HTMLGenerator.java:26) at com.highcom.cms.service.impl.PublishTaskServiceImpl.publishGeneral(PublishTaskServiceImpl.java:336) at sun.reflect.GeneratedMethodAccessor466.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:301) at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149) at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:106) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171) at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:89) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171) at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204) at $Proxy21.publishGeneral(Unknown Source) at com.highcom.cms.service.PublishGeneralTask.execute(PublishGeneralTask.java:23) at com.highcom.edp.core.utils.threadpool.thread.WorkThread.run(WorkThread.java:77) Caused by: java.lang.NullPointerException at com.highcom.cms.service.CMSTemplateEngine.documents(CMSTemplateEngine.java:105) at sun.reflect.GeneratedMethodAccessor320.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at freemarker.ext.beans.BeansWrapper.invokeMethod(BeansWrapper.java:1458) at freemarker.ext.beans.ReflectionCallableMemberDescriptor.invokeMethod(ReflectionCallableMemberDescriptor.java:52) at freemarker.ext.beans.MemberAndArguments.invokeMethod(MemberAndArguments.java:48) at freemarker.ext.beans.OverloadedMethodsModel.exec(OverloadedMethodsModel.java:62) ... 25 more