org.springframework.expression.spel.SpelEvaluationException: EL1011E: Method call: Attempted to call method test() on null context object

前言

本文中提到的解决方案，源码地址在：springboot-thymeleaf，希望可以帮你解决问题。

至于为什么已经写了一篇文章thymeleaf模板引擎调用java类中的方法，又多此一举的单独整理了这篇文章，是因为在解决此问题时首先搜索了一下关于此问题的文章，但是网上并没有搜到关于此问题的答案，因此自己做了整理。

问题描述

在springboot与thymeleaf整合过程中，出现了如下报错：

```

org.thymeleaf.exceptions.TemplateProcessingException: Exception evaluating SpringEL expression: "MethodTest.test()" (test:8)

at org.thymeleaf.spring4.expression.SpelVariableExpressionEvaluator.evaluate(SpelVariableExpressionEvaluator.java:161) ~[thymeleaf-spring4-2.1.5.RELEASE.jar:2.1.5.RELEASE]

at org.thymeleaf.standard.expression.VariableExpression.executeVariable(VariableExpression.java:154) ~[thymeleaf-2.1.5.RELEASE.jar:2.1.5.RELEASE]

at org.thymeleaf.standard.expression.SimpleExpression.executeSimple(SimpleExpression.java:59) ~[thymeleaf-2.1.5.RELEASE.jar:2.1.5.RELEASE]

at org.thymeleaf.standard.expression.Expression.execute(Expression.java:103) ~[thymeleaf-2.1.5.RELEASE.jar:2.1.5.RELEASE]

at org.thymeleaf.standard.expression.Expression.execute(Expression.java:133) ~[thymeleaf-2.1.5.RELEASE.jar:2.1.5.RELEASE]

at org.thymeleaf.standard.expression.Expression.execute(Expression.java:120) ~[thymeleaf-2.1.5.RELEASE.jar:2.1.5.RELEASE]

at org.thymeleaf.standard.processor.attr.AbstractStandardTextChildModifierAttrProcessor.getText(AbstractStandardTextChildModifierAttrProcessor.java:68) ~[thymeleaf-2.1.5.RELEASE.jar:2.1.5.RELEASE]

at org.thymeleaf.processor.attr.AbstractTextChildModifierAttrProcessor.getModifiedChildren(AbstractTextChildModifierAttrProcessor.java:59) ~[thymeleaf-2.1.5.RELEASE.jar:2.1.5.RELEASE]

at org.thymeleaf.processor.attr.AbstractChildrenModifierAttrProcessor.processAttribute(AbstractChildrenModifierAttrProcessor.java:59) ~[thymeleaf-2.1.5.RELEASE.jar:2.1.5.RELEASE]

at org.thymeleaf.processor.attr.AbstractAttrProcessor.doProcess(AbstractAttrProcessor.java:87) ~[thymeleaf-2.1.5.RELEASE.jar:2.1.5.RELEASE]

at org.thymeleaf.processor.AbstractProcessor.process(AbstractProcessor.java:212) ~[thymeleaf-2.1.5.RELEASE.jar:2.1.5.RELEASE]

at org.thymeleaf.dom.Node.applyNextProcessor(Node.java:1017) ~[thymeleaf-2.1.5.RELEASE.jar:2.1.5.RELEASE]

at org.thymeleaf.dom.Node.processNode(Node.java:972) ~[thymeleaf-2.1.5.RELEASE.jar:2.1.5.RELEASE]

at org.thymeleaf.dom.NestableNode.computeNextChild(NestableNode.java:695) ~[thymeleaf-2.1.5.RELEASE.jar:2.1.5.RELEASE]

at org.thymeleaf.dom.NestableNode.doAdditionalProcess(NestableNode.java:668) ~[thymeleaf-2.1.5.RELEASE.jar:2.1.5.RELEASE]

at org.thymeleaf.dom.Node.processNode(Node.java:990) ~[thymeleaf-2.1.5.RELEASE.jar:2.1.5.RELEASE]

at org.thymeleaf.dom.NestableNode.computeNextChild(NestableNode.java:695) ~[thymeleaf-2.1.5.RELEASE.jar:2.1.5.RELEASE]

at org.thymeleaf.dom.NestableNode.doAdditionalProcess(NestableNode.java:668) ~[thymeleaf-2.1.5.RELEASE.jar:2.1.5.RELEASE]

at org.thymeleaf.dom.Node.processNode(Node.java:990) ~[thymeleaf-2.1.5.RELEASE.jar:2.1.5.RELEASE]

at org.thymeleaf.dom.NestableNode.computeNextChild(NestableNode.java:695) ~[thymeleaf-2.1.5.RELEASE.jar:2.1.5.RELEASE]

at org.thymeleaf.dom.NestableNode.doAdditionalProcess(NestableNode.java:668) ~[thymeleaf-2.1.5.RELEASE.jar:2.1.5.RELEASE]

at org.thymeleaf.dom.Node.processNode(Node.java:990) ~[thymeleaf-2.1.5.RELEASE.jar:2.1.5.RELEASE]

at org.thymeleaf.dom.Document.process(Document.java:93) ~[thymeleaf-2.1.5.RELEASE.jar:2.1.5.RELEASE]

at org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1155) ~[thymeleaf-2.1.5.RELEASE.jar:2.1.5.RELEASE]

at org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1060) ~[thymeleaf-2.1.5.RELEASE.jar:2.1.5.RELEASE]

at org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1011) ~[thymeleaf-2.1.5.RELEASE.jar:2.1.5.RELEASE]

at org.thymeleaf.spring4.view.ThymeleafView.renderFragment(ThymeleafView.java:335) ~[thymeleaf-spring4-2.1.5.RELEASE.jar:2.1.5.RELEASE]

at org.thymeleaf.spring4.view.ThymeleafView.render(ThymeleafView.java:190) ~[thymeleaf-spring4-2.1.5.RELEASE.jar:2.1.5.RELEASE]

at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1271) ~[spring-webmvc-4.3.6.RELEASE.jar:4.3.6.RELEASE]

at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1037) ~[spring-webmvc-4.3.6.RELEASE.jar:4.3.6.RELEASE]

at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:980) ~[spring-webmvc-4.3.6.RELEASE.jar:4.3.6.RELEASE]

at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:897) ~[spring-webmvc-4.3.6.RELEASE.jar:4.3.6.RELEASE]

at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970) ~[spring-webmvc-4.3.6.RELEASE.jar:4.3.6.RELEASE]

at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861) ~[spring-webmvc-4.3.6.RELEASE.jar:4.3.6.RELEASE]

at javax.servlet.http.HttpServlet.service(HttpServlet.java:622) ~[tomcat-embed-core-8.5.11.jar:8.5.11]

at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846) ~[spring-webmvc-4.3.6.RELEASE.jar:4.3.6.RELEASE]

at javax.servlet.http.HttpServlet.service(HttpServlet.java:729) ~[tomcat-embed-core-8.5.11.jar:8.5.11]

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230) [tomcat-embed-core-8.5.11.jar:8.5.11]

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) [tomcat-embed-core-8.5.11.jar:8.5.11]

at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) ~[tomcat-embed-websocket-8.5.11.jar:8.5.11]

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) [tomcat-embed-core-8.5.11.jar:8.5.11]

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) [tomcat-embed-core-8.5.11.jar:8.5.11]

at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99) ~[spring-web-4.3.6.RELEASE.jar:4.3.6.RELEASE]

at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring-web-4.3.6.RELEASE.jar:4.3.6.RELEASE]

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) [tomcat-embed-core-8.5.11.jar:8.5.11]

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) [tomcat-embed-core-8.5.11.jar:8.5.11]

at org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:105) ~[spring-web-4.3.6.RELEASE.jar:4.3.6.RELEASE]

at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring-web-4.3.6.RELEASE.jar:4.3.6.RELEASE]

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) [tomcat-embed-core-8.5.11.jar:8.5.11]

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) [tomcat-embed-core-8.5.11.jar:8.5.11]

at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:81) ~[spring-web-4.3.6.RELEASE.jar:4.3.6.RELEASE]

at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring-web-4.3.6.RELEASE.jar:4.3.6.RELEASE]

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) [tomcat-embed-core-8.5.11.jar:8.5.11]

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) [tomcat-embed-core-8.5.11.jar:8.5.11]

at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197) ~[spring-web-4.3.6.RELEASE.jar:4.3.6.RELEASE]

at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring-web-4.3.6.RELEASE.jar:4.3.6.RELEASE]

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) [tomcat-embed-core-8.5.11.jar:8.5.11]

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) [tomcat-embed-core-8.5.11.jar:8.5.11]

at org.springframework.boot.web.support.ErrorPageFilter.doFilter(ErrorPageFilter.java:115) [spring-boot-1.5.1.RELEASE.jar:1.5.1.RELEASE]

at org.springframework.boot.web.support.ErrorPageFilter.access$000(ErrorPageFilter.java:59) [spring-boot-1.5.1.RELEASE.jar:1.5.1.RELEASE]

at org.springframework.boot.web.support.ErrorPageFilter$1.doFilterInternal(ErrorPageFilter.java:90) [spring-boot-1.5.1.RELEASE.jar:1.5.1.RELEASE]

at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring-web-4.3.6.RELEASE.jar:4.3.6.RELEASE]

at org.springframework.boot.web.support.ErrorPageFilter.doFilter(ErrorPageFilter.java:108) [spring-boot-1.5.1.RELEASE.jar:1.5.1.RELEASE]

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) [tomcat-embed-core-8.5.11.jar:8.5.11]

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) [tomcat-embed-core-8.5.11.jar:8.5.11]

at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198) [tomcat-embed-core-8.5.11.jar:8.5.11]

at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) [tomcat-embed-core-8.5.11.jar:8.5.11]

at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:474) [tomcat-embed-core-8.5.11.jar:8.5.11]

at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140) [tomcat-embed-core-8.5.11.jar:8.5.11]

at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79) [tomcat-embed-core-8.5.11.jar:8.5.11]

at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) [tomcat-embed-core-8.5.11.jar:8.5.11]

at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:349) [tomcat-embed-core-8.5.11.jar:8.5.11]

at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:783) [tomcat-embed-core-8.5.11.jar:8.5.11]

at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-embed-core-8.5.11.jar:8.5.11]

at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:798) [tomcat-embed-core-8.5.11.jar:8.5.11]

at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1434) [tomcat-embed-core-8.5.11.jar:8.5.11]

at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-8.5.11.jar:8.5.11]

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0_121]

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_121]

at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-8.5.11.jar:8.5.11]

at java.lang.Thread.run(Thread.java:745) [na:1.8.0_121]

Caused by: org.springframework.expression.spel.SpelEvaluationException: EL1011E: Method call: Attempted to call method test() on null context object

at org.springframework.expression.spel.ast.MethodReference.throwIfNotNullSafe(MethodReference.java:144) ~[spring-expression-4.3.6.RELEASE.jar:4.3.6.RELEASE]

at org.springframework.expression.spel.ast.MethodReference.getValueRef(MethodReference.java:73) ~[spring-expression-4.3.6.RELEASE.jar:4.3.6.RELEASE]

at org.springframework.expression.spel.ast.CompoundExpression.getValueRef(CompoundExpression.java:66) ~[spring-expression-4.3.6.RELEASE.jar:4.3.6.RELEASE]

at org.springframework.expression.spel.ast.CompoundExpression.getValueInternal(CompoundExpression.java:87) ~[spring-expression-4.3.6.RELEASE.jar:4.3.6.RELEASE]

at org.springframework.expression.spel.ast.SpelNodeImpl.getValue(SpelNodeImpl.java:120) ~[spring-expression-4.3.6.RELEASE.jar:4.3.6.RELEASE]

at org.springframework.expression.spel.standard.SpelExpression.getValue(SpelExpression.java:267) ~[spring-expression-4.3.6.RELEASE.jar:4.3.6.RELEASE]

at org.thymeleaf.spring4.expression.SpelVariableExpressionEvaluator.evaluate(SpelVariableExpressionEvaluator.java:139) ~[thymeleaf-spring4-2.1.5.RELEASE.jar:2.1.5.RELEASE]

        ... 80 common frames omitted

```

解决方案

通过异常栈可以得出有效信息：

Attempted to call method on null context object

调用的方法处于一个空对象中，即调用实例为空。

thymeleaf的context，即提供数据的地方，基于web的context，即WebContext相对context增加 param,session,application变量，并且自动将request atttributes添加到context variable map，可以在模板直接访问。

针对于此异常，需要将期望调用的java实例存入thymeleaf的context域中，代码层面即为：将实例对象存入Request对象中。

org.springframework.expression.spel.SpelEvaluationException: EL1011E: Method call: Attempted to call method test() on null context object的更多相关文章

【spring data jpa】使用jpa的@Query，自己写的语句，报错：org.springframework.expression.spel.SpelEvaluationException: EL1007E: Property or field 'status' cannot be found on null
报错: org.springframework.expression.spel.SpelEvaluationException: EL1007E: Property or field 'status' ...
【spring data jpa】jpa中使用in查询或删除在@Query中怎么写，报错：org.springframework.expression.spel.SpelEvaluationException: EL1007E: Property or field 'goodsConfigUid' cannot be found on null 怎么处理
示例代码如下: @Modifying @Transactional @Query("delete from GoodsBindConfigMapping gbc " + " ...
org.springframework.expression.spel.SpelEvaluationException: EL1004E: Method call: Method service() cannot be found on com.my.blog.springboot.thymeleaf.util.MethodTest type
前言本文中提到的解决方案,源码地址在:springboot-thymeleaf,希望可以帮你解决问题. 至于为什么已经写了一篇文章thymeleaf模板引擎调用java类中的方法,又多此一举的单独整 ...
org.springframework.expression.spel.SpelEvaluationException: EL1005E:(pos 0): Type cannot be found
今天在完成Spring项目的时候遇到了一个类似于下面的异常: 10.03.2010 13:53:53 org.apache.catalina.core.StandardWrapperValve inv ...
org.springframework.expression.spel.SpelEvaluationException: EL1030E
问题与分析在本地开发项目时发现报错如下: org.springframework.expression.spel.SpelEvaluationException: EL1030E: The oper ...
spring-boot 集成ehcache报错：org.springframework.expression.spel.SpelEvaluationException: EL1008E:
错误信息:org.springframework.expression.spel.SpelEvaluationException: EL1008E: Property or field 'pageab ...
Thyemleaf报错: Method call: Attempted to call method *** on null context object
翻译:方法调用:尝试在null上下文对象上调用方法*** 解释:在Thyemleaf上下中不存在所要调用的对象,相当于Java代码中的NullPointerException 解决方案: 方案1. 需 ...
java.lang.NoClassDefFoundError: org/springframework/expression/PropertyAccessor
这个异常原因种类不一,网上有各个版本,本人的是因为缺少了spring-expression-3.2.1.RELEASE.jar 2015-9-18 23:19:11 org.apache.catali ...
Caused by: java.lang.ClassNotFoundException: org.springframework.expression.ExpressionParser
1.错误描述 usage: java org.apache.catalina.startup.Catalina [ -config {pathname} ] [ -nonaming ] { -help ...

随机推荐

sublime text 的小细节设置,让你的代码更优美
这些属性都可以在首选项>设置-默认里修改下面也会介绍几个比较常用的几个插件字体大小: "font_size": 17 高亮编辑中的一行 "highlight_ ...
【javascript】您好，您要的ECMAScript6速记套餐到了
[前言]本文“严重参考” 自阮一峰老师写的文档,在此我郑重感谢他沉默无声的帮助总结一下ES6为 javascript中的对象/数组/函数这JS三巨头所提供的更简洁优雅的书写方式,以及扩展的API ...
【Hadoop】NameNode
一.背景介绍当数据集的大小超过一台独立的物理计算机的存储能力时,就有必要对它进行分区(partition)并存储到多台单独的计算机上.管理网络中跨多台计算机存储的文件系统称为分布式文件系统(dist ...
css小工具
自定义滚动条.task-holder::-webkit-scrollbar { height: 7px; width: 7px; } .task-holder::-webkit-scrollb ...
Effective Java通俗理解（下）
Effective Java通俗理解(上) 第31条:用实例域代替序数枚举类型有一个ordinal方法,它范围该常量的序数从0开始,不建议使用这个方法,因为这不能很好地对枚举进行维护,正确应该是利用 ...
如何使用 Weave 网络？- 每天5分钟玩转 Docker 容器技术（63）
weave 是 Weaveworks 开发的容器网络解决方案.weave 创建的虚拟网络可以将部署在多个主机上的容器连接起来.对容器来说,weave 就像一个巨大的以太网交换机,所有容器都被接入这个交 ...
ASP.Net Core WebApi几种版本控制对比
版本控制的好处: (1)助于及时推出功能, 而不会破坏现有系统. (2)它还可以帮助为选定的客户提供额外的功能. API 版本控制可以采用不同的方式进行控制,方法如下: (1)在 URL 中追加版本或 ...
表单校验demo
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8&quo ...
Redis订阅和发布模式和Redis事务
-------------------Redis订阅和发布模式------------------- 1.概念 Redis 发布订阅(pub/sub)是一种消息通信模式: 发送者(pu ...
.NET及.NET Core系统架构
三层及多层架构 Multitier Architecture ASP.NET N-Tier Architecture Schema Visual Studio N-Tier Example 来源:ht ...

org.springframework.expression.spel.SpelEvaluationException: EL1011E: Method call: Attempted to call method test() on null context object

前言

问题描述

解决方案

org.springframework.expression.spel.SpelEvaluationException: EL1011E: Method call: Attempted to call method test() on null context object的更多相关文章

随机推荐

热门专题