[ERROR]-[2018-01-06 02:40:50]-[org.b3log.latke.servlet.renderer.freemarker.AbstractFreeMarkerRenderer:138]: FreeMarker renders error
FreeMarker template error:
The following has evaluated to null or missing:
==> article [in template "article.ftl" at line 7, column 25]
----
Tip: If the failing expression is known to be legally refer to something that's sometimes null or missing, either specify a default value like myOptionalVar!myDefault, or use <#if myOptionalVar??>when-present<#else>when-missing</#if>. (These only cover the last step of the expression; to cover the whole expression, use parenthesis: (myOptionalVar.foo)!myDefault, (myOptionalVar.foo)??
----
----
FTL stack trace ("~" means nesting-related):
- Failed at: ${article.articleTitleEmojUnicode} [in template "article.ftl" at line 7, column 23]
- Reached through: @head title="${article.articleTitleEm... [in template "article.ftl" at line 7, column 9]
----
Java stack trace (for programmers):
----
freemarker.core.InvalidReferenceException: [... Exception message was already printed; see it above ...]
at freemarker.core.InvalidReferenceException.getInstance(InvalidReferenceException.java:131)
at freemarker.core.UnexpectedTypeException.newDesciptionBuilder(UnexpectedTypeException.java:77)
at freemarker.core.UnexpectedTypeException.<init>(UnexpectedTypeException.java:40)
at freemarker.core.NonHashException.<init>(NonHashException.java:46)
at freemarker.core.Dot._eval(Dot.java:45)
at freemarker.core.Expression.eval(Expression.java:78)
at freemarker.core.Expression.evalAndCoerceToString(Expression.java:82)
at freemarker.core.DollarVariable.accept(DollarVariable.java:41)
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.renderElementToString(Environment.java:2196)
at freemarker.core.StringLiteral.evalAndCoerceToString(StringLiteral.java:96)
at freemarker.core.StringLiteral._eval(StringLiteral.java:73)
at freemarker.core.Expression.eval(Expression.java:78)
at freemarker.core.Environment.setMacroContextLocalsFromArguments(Environment.java:739)
at freemarker.core.Environment.invoke(Environment.java:689)
at freemarker.core.UnifiedCall.accept(UnifiedCall.java:84)
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 org.b3log.latke.servlet.renderer.freemarker.AbstractFreeMarkerRenderer.genHTML(AbstractFreeMarkerRenderer.java:162)
at org.b3log.symphony.processor.SkinRenderer.genHTML(SkinRenderer.java:155)
at org.b3log.latke.servlet.renderer.freemarker.AbstractFreeMarkerRenderer.render(AbstractFreeMarkerRenderer.java:133)
at org.b3log.latke.servlet.DispatcherServlet.result(DispatcherServlet.java:111)
at org.b3log.latke.servlet.DispatcherServlet.service(DispatcherServlet.java:89)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.b3log.latke.servlet.filter.EncodingFilter.doFilter(EncodingFilter.java:71)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:651)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:501)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:754)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1376)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
[ERROR]-[2018-01-06 02:40:50]-[org.b3log.latke.repository.jdbc.JdbcRepository:847]: Gets connection failed
com.alibaba.druid.pool.GetConnectionTimeoutException: wait millis 5000, active 50, maxActive 50
at com.alibaba.druid.pool.DruidDataSource.getConnectionInternal(DruidDataSource.java:1267)
at com.alibaba.druid.pool.DruidDataSource.getConnectionDirect(DruidDataSource.java:1086)
at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:1066)
at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:1056)
at org.b3log.latke.repository.jdbc.util.Connections.getConnection(Connections.java:192)
at org.b3log.latke.repository.jdbc.JdbcRepository.getConnection(JdbcRepository.java:843)
at org.b3log.latke.repository.jdbc.JdbcRepository.get(JdbcRepository.java:401)
at org.b3log.latke.repository.AbstractRepository.get(AbstractRepository.java:135)
at org.b3log.symphony.repository.RoleRepository_$$_jvst50e_11._d8get(RoleRepository_$$_jvst50e_11.java)
at sun.reflect.GeneratedMethodAccessor108.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.b3log.latke.ioc.bean.JavassistMethodHandler.invoke(JavassistMethodHandler.java:106)
at org.b3log.symphony.repository.RoleRepository_$$_jvst50e_11.get(RoleRepository_$$_jvst50e_11.java)
at org.b3log.symphony.service.RoleQueryService.getRole(RoleQueryService.java:141)
at org.b3log.symphony.service.RoleQueryService_$$_jvst50e_c._d7getRole(RoleQueryService_$$_jvst50e_c.java)
at sun.reflect.GeneratedMethodAccessor107.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.b3log.latke.ioc.bean.JavassistMethodHandler.invoke(JavassistMethodHandler.java:106)
at org.b3log.symphony.service.RoleQueryService_$$_jvst50e_c.getRole(RoleQueryService_$$_jvst50e_c.java)
at org.b3log.symphony.processor.advice.PermissionGrant.doAdvice(PermissionGrant.java:81)
at org.b3log.symphony.processor.advice.PermissionGrant_$$_jvst50e_8d._d1doAdvice(PermissionGrant_$$_jvst50e_8d.java)
at sun.reflect.GeneratedMethodAccessor119.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.b3log.latke.ioc.bean.JavassistMethodHandler.invoke(JavassistMethodHandler.java:106)
at org.b3log.symphony.processor.advice.PermissionGrant_$$_jvst50e_8d.doAdvice(PermissionGrant_$$_jvst50e_8d.java)
at org.b3log.latke.servlet.handler.AdviceHandler.handle(AdviceHandler.java:119)
at org.b3log.latke.servlet.HttpControl.nextHandler(HttpControl.java:99)
at org.b3log.latke.servlet.handler.ArgsHandler.handle(ArgsHandler.java:60)
at org.b3log.latke.servlet.HttpControl.nextHandler(HttpControl.java:99)
at org.b3log.latke.servlet.handler.RequestDispatchHandler.handle(RequestDispatchHandler.java:92)
at org.b3log.latke.servlet.HttpControl.nextHandler(HttpControl.java:99)
at org.b3log.latke.servlet.handler.RequestPrepareHandler.handle(RequestPrepareHandler.java:45)
at org.b3log.latke.servlet.HttpControl.nextHandler(HttpControl.java:99)
at org.b3log.latke.servlet.handler.StaticResourceHandler.handle(StaticResourceHandler.java:119)
at org.b3log.latke.servlet.HttpControl.nextHandler(HttpControl.java:99)
at org.b3log.latke.servlet.DispatcherServlet.service(DispatcherServlet.java:84)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.b3log.latke.servlet.filter.EncodingFilter.doFilter(EncodingFilter.java:71)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:651)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:501)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:754)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1376)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
[ERROR]-[2018-01-06 02:40:50]-[org.b3log.latke.repository.jdbc.JdbcRepository:412]: get:null
java.lang.NullPointerException
[ERROR]-[2018-01-06 02:40:50]-[org.b3log.symphony.service.RoleQueryService:149]: Gets role failed
org.b3log.latke.repository.RepositoryException: java.lang.NullPointerException
at org.b3log.latke.repository.jdbc.JdbcRepository.get(JdbcRepository.java:413)
at org.b3log.latke.repository.AbstractRepository.get(AbstractRepository.java:135)
at org.b3log.symphony.repository.RoleRepository_$$_jvst50e_11._d8get(RoleRepository_$$_jvst50e_11.java)
at sun.reflect.GeneratedMethodAccessor108.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.b3log.latke.ioc.bean.JavassistMethodHandler.invoke(JavassistMethodHandler.java:106)
at org.b3log.symphony.repository.RoleRepository_$$_jvst50e_11.get(RoleRepository_$$_jvst50e_11.java)
at org.b3log.symphony.service.RoleQueryService.getRole(RoleQueryService.java:141)
at org.b3log.symphony.service.RoleQueryService_$$_jvst50e_c._d7getRole(RoleQueryService_$$_jvst50e_c.java)
at sun.reflect.GeneratedMethodAccessor107.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.b3log.latke.ioc.bean.JavassistMethodHandler.invoke(JavassistMethodHandler.java:106)
at org.b3log.symphony.service.RoleQueryService_$$_jvst50e_c.getRole(RoleQueryService_$$_jvst50e_c.java)
at org.b3log.symphony.processor.advice.PermissionGrant.doAdvice(PermissionGrant.java:81)
at org.b3log.symphony.processor.advice.PermissionGrant_$$_jvst50e_8d._d1doAdvice(PermissionGrant_$$_jvst50e_8d.java)
at sun.reflect.GeneratedMethodAccessor119.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.b3log.latke.ioc.bean.JavassistMethodHandler.invoke(JavassistMethodHandler.java:106)
at org.b3log.symphony.processor.advice.PermissionGrant_$$_jvst50e_8d.doAdvice(PermissionGrant_$$_jvst50e_8d.java)
at org.b3log.latke.servlet.handler.AdviceHandler.handle(AdviceHandler.java:119)
at org.b3log.latke.servlet.HttpControl.nextHandler(HttpControl.java:99)
at org.b3log.latke.servlet.handler.ArgsHandler.handle(ArgsHandler.java:60)
at org.b3log.latke.servlet.HttpControl.nextHandler(HttpControl.java:99)
at org.b3log.latke.servlet.handler.RequestDispatchHandler.handle(RequestDispatchHandler.java:92)
at org.b3log.latke.servlet.HttpControl.nextHandler(HttpControl.java:99)
at org.b3log.latke.servlet.handler.RequestPrepareHandler.handle(RequestPrepareHandler.java:45)
at org.b3log.latke.servlet.HttpControl.nextHandler(HttpControl.java:99)
at org.b3log.latke.servlet.handler.StaticResourceHandler.handle(StaticResourceHandler.java:119)
at org.b3log.latke.servlet.HttpControl.nextHandler(HttpControl.java:99)
at org.b3log.latke.servlet.DispatcherServlet.service(DispatcherServlet.java:84)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.b3log.latke.servlet.filter.EncodingFilter.doFilter(EncodingFilter.java:71)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:651)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:501)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:754)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1376)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException
[ERROR]-[2018-01-06 02:40:50]-[org.b3log.latke.servlet.HttpControl:104]: Request [
method=GET,
URL=http://www.3xmq.com:8080/article/1515141092284,
contentType=null,
characterEncoding=UTF-8,
local=[
addr=172.17.99.240,
port=8080,
name=3xmq],
remote=[
addr=39.106.78.43,
port=35882,
host=39.106.78.43],
headers=[
connection=upgrade
host=www.3xmq.com:8080
user-agent=Apache-HttpClient/4.5.3 (Java/1.8.0_121)
]
] processing failed
java.lang.NullPointerException
at org.b3log.symphony.processor.advice.PermissionGrant.doAdvice(PermissionGrant.java:84)
at org.b3log.symphony.processor.advice.PermissionGrant_$$_jvst50e_8d._d1doAdvice(PermissionGrant_$$_jvst50e_8d.java)
at sun.reflect.GeneratedMethodAccessor119.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.b3log.latke.ioc.bean.JavassistMethodHandler.invoke(JavassistMethodHandler.java:106)
at org.b3log.symphony.processor.advice.PermissionGrant_$$_jvst50e_8d.doAdvice(PermissionGrant_$$_jvst50e_8d.java)
at org.b3log.latke.servlet.handler.AdviceHandler.handle(AdviceHandler.java:119)
at org.b3log.latke.servlet.HttpControl.nextHandler(HttpControl.java:99)
at org.b3log.latke.servlet.handler.ArgsHandler.handle(ArgsHandler.java:60)
at org.b3log.latke.servlet.HttpControl.nextHandler(HttpControl.java:99)
at org.b3log.latke.servlet.handler.RequestDispatchHandler.handle(RequestDispatchHandler.java:92)
at org.b3log.latke.servlet.HttpControl.nextHandler(HttpControl.java:99)
at org.b3log.latke.servlet.handler.RequestPrepareHandler.handle(RequestPrepareHandler.java:45)
at org.b3log.latke.servlet.HttpControl.nextHandler(HttpControl.java:99)
at org.b3log.latke.servlet.handler.StaticResourceHandler.handle(StaticResourceHandler.java:119)
at org.b3log.latke.servlet.HttpControl.nextHandler(HttpControl.java:99)
at org.b3log.latke.servlet.DispatcherServlet.service(DispatcherServlet.java:84)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.b3log.latke.servlet.filter.EncodingFilter.doFilter(EncodingFilter.java:71)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:651)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:501)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:754)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1376)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
[ERROR]-[2018-01-06 02:40:50]-[org.b3log.latke.servlet.renderer.freemarker.AbstractFreeMarkerRenderer:138]: FreeMarker renders error
FreeMarker template error:
The following has evaluated to null or missing:
==> article [in template "article.ftl" at line 7, column 25]
----
Tip: If the failing expression is known to be legally refer to something that's sometimes null or missing, either specify a default value like myOptionalVar!myDefault, or use <#if myOptionalVar??>when-present<#else>when-missing</#if>. (These only cover the last step of the expression; to cover the whole expression, use parenthesis: (myOptionalVar.foo)!myDefault, (myOptionalVar.foo)??
----
----
FTL stack trace ("~" means nesting-related):
- Failed at: ${article.articleTitleEmojUnicode} [in template "article.ftl" at line 7, column 23]
- Reached through: @head title="${article.articleTitleEm... [in template "article.ftl" at line 7, column 9]
----
Java stack trace (for programmers):
----
freemarker.core.InvalidReferenceException: [... Exception message was already printed; see it above ...]
at freemarker.core.InvalidReferenceException.getInstance(InvalidReferenceException.java:131)
at freemarker.core.UnexpectedTypeException.newDesciptionBuilder(UnexpectedTypeException.java:77)
at freemarker.core.UnexpectedTypeException.<init>(UnexpectedTypeException.java:40)
at freemarker.core.NonHashException.<init>(NonHashException.java:46)
at freemarker.core.Dot._eval(Dot.java:45)
at freemarker.core.Expression.eval(Expression.java:78)
at freemarker.core.Expression.evalAndCoerceToString(Expression.java:82)
at freemarker.core.DollarVariable.accept(DollarVariable.java:41)
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.renderElementToString(Environment.java:2196)
at freemarker.core.StringLiteral.evalAndCoerceToString(StringLiteral.java:96)
at freemarker.core.StringLiteral._eval(StringLiteral.java:73)
at freemarker.core.Expression.eval(Expression.java:78)
at freemarker.core.Environment.setMacroContextLocalsFromArguments(Environment.java:739)
at freemarker.core.Environment.invoke(Environment.java:689)
at freemarker.core.UnifiedCall.accept(UnifiedCall.java:84)
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 org.b3log.latke.servlet.renderer.freemarker.AbstractFreeMarkerRenderer.genHTML(AbstractFreeMarkerRenderer.java:162)
at org.b3log.symphony.processor.SkinRenderer.genHTML(SkinRenderer.java:155)
at org.b3log.latke.servlet.renderer.freemarker.AbstractFreeMarkerRenderer.render(AbstractFreeMarkerRenderer.java:133)
at org.b3log.latke.servlet.DispatcherServlet.result(DispatcherServlet.java:111)
at org.b3log.latke.servlet.DispatcherServlet.service(DispatcherServlet.java:89)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.b3log.latke.servlet.filter.EncodingFilter.doFilter(EncodingFilter.java:71)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:651)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:501)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:754)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1376)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
mysql 慢查询
# Time: 2018-01-05T18:44:02.436437Z
# User@Host: root[root] @ [39.106.78.43] Id: 99
# Query_time: 6.401251 Lock_time: 0.000069 Rows_sent: 10 Rows_examined: 10
SET timestamp=1515177842;
select * from symphony_article where (articleRandomDouble>=0.0 and articleRandomDouble<=0.13575782778368972 and articleStatus=0) limit 0,10;
# Time: 2018-01-05T18:44:15.246272Z
# User@Host: root[root] @ [39.106.78.43] Id: 88
# Query_time: 13.830847 Lock_time: 0.000155 Rows_sent: 10 Rows_examined: 10
SET timestamp=1515177855;
select * from symphony_article where (articleRandomDouble>=0.0 and articleRandomDouble<=0.16891545026924093 and articleStatus=0) limit 0,10;
# Time: 2018-01-05T18:44:44.958681Z
# User@Host: root[root] @ [39.106.78.43] Id: 69
# Query_time: 12.792900 Lock_time: 0.000097 Rows_sent: 10 Rows_examined: 10
SET timestamp=1515177884;
select * from symphony_article where (articleRandomDouble>=0.0 and articleRandomDouble<=0.18897769303593281 and articleStatus=0) limit 0,10;
# Time: 2018-01-05T18:44:45.332415Z
# User@Host: root[root] @ [39.106.78.43] Id: 109
# Query_time: 14.992689 Lock_time: 0.000054 Rows_sent: 10 Rows_examined: 10
SET timestamp=1515177885;
select * from symphony_article where (articleRandomDouble>=0.0 and articleRandomDouble<=0.19932722235331668 and articleStatus=0) limit 0,10;
# Time: 2018-01-05T18:44:46.543399Z
# User@Host: root[root] @ [39.106.78.43] Id: 92
# Query_time: 14.546881 Lock_time: 0.000124 Rows_sent: 10 Rows_examined: 10
SET timestamp=1515177886;
select * from symphony_article where (articleRandomDouble>=0.0 and articleRandomDouble<=0.21861146510702367 and articleStatus=0) limit 0,10;
# Time: 2018-01-05T18:44:54.518877Z
# User@Host: root[root] @ [39.106.78.43] Id: 85
# Query_time: 60.059722 Lock_time: 0.000073 Rows_sent: 10 Rows_examined: 10
SET timestamp=1515177894;
select * from symphony_article where (articleRandomDouble>=0.0 and articleRandomDouble<=0.060243983404944634 and articleStatus=0) limit 0,10;
# Time: 2018-01-05T18:44:58.642866Z
# User@Host: root[root] @ [39.106.78.43] Id: 63
# Query_time: 6.031573 Lock_time: 0.000077 Rows_sent: 10 Rows_examined: 10
SET timestamp=1515177898;
select * from symphony_article where (articleRandomDouble>=0.0 and articleRandomDouble<=0.08719545215588231 and articleStatus=0) limit 0,10;
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