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
- go环境的安装~
Golang环境搭建 Golang github地址:https://github.com/golang/go Golang的环境下载:https://golang.org/dl/ 安装过程就是nex ...
- jsp 的四个作用域 ：page、request、session和application的区别 （转）
1.简单说 page指当前页面.在一个jsp页面里有效 2.request 指从http请求到服务器处理结束,返回响应的整个过程.在这个过程中使用forward方式跳转多个jsp.在这些页面里你都可以 ...
- 【Ubuntu 16】安装ssh
ubuntu16默认使用ufw(Uncomplicated FireWall 继承自 iptables)管理防火墙,使用gufw图形化界面方便管理, 默认情况下openssh-server没有安装. ...
- python函数参数中带有默认参数list的坑
在python中函数参数中如果带有默认参数list遇到问题 先看一段代码 def f(x,l=[]): for i in range(x): l.append(i*i) print(l) print( ...
- 一起学ASP.NET Core 2.0学习笔记(二): ef core2.0 及mysql provider 、Fluent API相关配置及迁移
不得不说微软的技术迭代还是很快的,上了微软的船就得跟着她走下去,前文一起学ASP.NET Core 2.0学习笔记(一): CentOS下 .net core2 sdk nginx.superviso ...
- ASP.NET Core开发期间部署到IIS自定义主机域名并附加进程调试
在.NET Framework环境下,我们经常会这么做 把一个web项目不经过发布直接部署到IIS里去,配置上主机名,修改一下hosts文件,就可以用自定义的域名来访问我们的应用程序,使用附加到进程( ...
- Docker+Gogs搭建个人Git服务
欢迎 经常使用Github的我,Github它功能强大,操作简单,不用FQ,所以大家会使用Github进行代码托管,但是,Github的私仓收费的,而且对于普通个人用户来说,价格也不便宜.很多人搭建自 ...
- java冒泡排序详解
冒泡排序 经典排序算法 - 冒泡排序Bubble sort 原理是临近的数字两两进行比较,按照从小到大或者从大到小的顺序进行交换, 这样一趟过去后,最大或最小的数字被交换到了最后一位, 然后再从头开始 ...
- Bootstrap-table使用记录（转）
HTML代码 /*index.cshtml*/ @section styles{ <style> .main { margin-top:20px; } .modal-body .form- ...
- ps抠图的几种方法
大家经常会遇到抠图的问题,最多的就是抠人体.头发,抠水,抠树,,,自己经过学习总结了下ps抠图方法,有好几种抠图的方法,我只选择了四种好用的与大家分享 1.色彩范围 比如我们要抠图片上的海水,要抠的图 ...