SSH异常（Tomcat启动前未配置异常）——The Struts dispatcher cannot、Method: getClassInstance Line: 220、ServletContex

深碍√TFBOYSˉ_ 2022-04-24 07:36 135阅读 0赞

一：

严重: Servlet.service() for servlet jsp threw exception
    The Struts dispatcher cannot be found.  This is usually caused by using Struts tags without the associated filter. Struts tags are only usable when the request has passed through its servlet filter, which initializes the Struts dispatcher needed for this tag. - [unknown location]
    	at org.apache.struts2.views.jsp.TagUtils.getStack(TagUtils.java:60)
    	at org.apache.struts2.views.jsp.StrutsBodyTagSupport.getStack(StrutsBodyTagSupport.java:44)
    	at org.apache.struts2.views.jsp.ComponentTagSupport.doStartTag(ComponentTagSupport.java:48)
    	at org.apache.jsp.login_jsp._jspx_meth_s_005fform_005f0(login_jsp.java:128)
    	at org.apache.jsp.login_jsp._jspService(login_jsp.java:98)
    	at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
    	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    	at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:388)
    	at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
    	at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
    	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
    	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:293)
    	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
    	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:602)
    	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
    	at java.lang.Thread.run(Thread.java:745)

> ### 参考： ###
> 
> ### [The Struts dispatcher cannot be found异常的解决方法][The Struts dispatcher cannot be found]【找不到Struts调度器程序，需在web.xml里配置过滤器】 ###

<filter>
    		<filter-name>struts2</filter-name>
    		<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
    	</filter>
    	<filter-mapping>
    		<filter-name>struts2</filter-name>
    		<url-pattern>/*</url-pattern>【我一般使用这个】
                或
                <url-pattern>*.action</url-pattern>
                或
                <url-pattern>*.jsp</url-pattern>
    	</filter-mapping>

二：

严重: Exception starting filter struts2
    Class: com.opensymphony.xwork2.spring.SpringObjectFactory
    File: SpringObjectFactory.java
    Method: getClassInstance
    Line: 220 - com/opensymphony/xwork2/spring/SpringObjectFactory.java:220:-1
    	at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:428)
    	at org.apache.struts2.dispatcher.ng.InitOperations.initDispatcher(InitOperations.java:69)
    	at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.init(StrutsPrepareAndExecuteFilter.java:51)
    	at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:295)
    	at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:422)
    	at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:115)
    	at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4072)
    	at org.apache.catalina.core.StandardContext.start(StandardContext.java:4726)
    	at org.apache.catalina.startup.HostConfig.checkResources(HostConfig.java:1284)
    	at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1382)
    	at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:306)
    	at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:142)
    	at org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1389)
    	at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1653)
    	at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1662)
    	at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1642)
    	at java.lang.Thread.run(Thread.java:745)
    Caused by: java.lang.NullPointerException
    	at com.opensymphony.xwork2.spring.SpringObjectFactory.getClassInstance(SpringObjectFactory.java:220)
    	at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.verifyResultType(XmlConfigurationProvider.java:530)
    	at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.addResultTypes(XmlConfigurationProvider.java:501)
    	at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.addPackage(XmlConfigurationProvider.java:457)
    	at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.loadPackages(XmlConfigurationProvider.java:275)
    	at org.apache.struts2.config.StrutsXmlConfigurationProvider.loadPackages(StrutsXmlConfigurationProvider.java:111)
    	at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reloadContainer(DefaultConfiguration.java:204)
    	at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:66)
    	at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:371)
    	at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:415)
    	... 16 more

> ### 参考： ###
> 
> ###  [关于tomcat启动出现Line: 220 - com/opensymphony/xwork2/spring/SpringObjectFactory.java:220:-1错误的解决办法][tomcat_Line_ 220 - com_opensymphony_xwork2_spring_SpringObjectFactory.java_220_-1] ###

<listener>
    		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    	</listener>

三：

严重: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener
    org.springframework.beans.factory.BeanDefinitionStoreException: IOException parsing XML document from ServletContext resource [/WEB-INF/applicationContext.xml]; nested exception is java.io.FileNotFoundException: Could not open ServletContext resource [/WEB-INF/applicationContext.xml]
    Caused by: java.io.FileNotFoundException: Could not open ServletContext resource [/WEB-INF/applicationContext.xml]
    	at org.springframework.web.context.support.ServletContextResource.getInputStream(ServletContextResource.java:99)
    	at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:351)
    	at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:334)
    	at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:126)
    	at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:142)
    	at org.springframework.web.context.support.XmlWebApplicationContext.loadBeanDefinitions(XmlWebApplicationContext.java:123)
    	at org.springframework.web.context.support.XmlWebApplicationContext.loadBeanDefinitions(XmlWebApplicationContext.java:91)
    	at org.springframework.context.support.AbstractRefreshableApplicationContext.refreshBeanFactory(AbstractRefreshableApplicationContext.java:94)
    	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:292)
    	at org.springframework.web.context.support.AbstractRefreshableWebApplicationContext.refresh(AbstractRefreshableWebApplicationContext.java:156)
    	at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:246)
    	at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:184)
    	at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:49)
    	at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4206)
    	at org.apache.catalina.core.StandardContext.start(StandardContext.java:4705)
    	at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:799)
    	at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:779)
    	at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:601)
    	at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1079)
    	at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:1002)
    	at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:506)
    	at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1317)
    	at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:324)
    	at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:142)
    	at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1065)
    	at org.apache.catalina.core.StandardHost.start(StandardHost.java:840)
    	at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1057)
    	at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:463)
    	at org.apache.catalina.core.StandardService.start(StandardService.java:525)
    	at org.apache.catalina.core.StandardServer.start(StandardServer.java:754)
    	at org.apache.catalina.startup.Catalina.start(Catalina.java:595)
    	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    	at java.lang.reflect.Method.invoke(Method.java:606)
    	at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
    	at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)

> ### 参考： ###
> 
> ### [关于SpringMVC项目报错:java.io.FileNotFoundException: Could not open ServletContext resource \[/WEB-INF/xxxx.xml\]][SpringMVC_java.io.FileNotFoundException_ Could not open ServletContext resource _WEB-INF_xxxx.xml]  ###

** 要确定spring的配置文件"applicationContext.xml"的路径**

<context-param>
    		<param-name>contextConfigLocation</param-name>
    		<param-value>classpath:applicationContext.xml</param-value>
    	</context-param>

> ###  了解： ###
> 
> ### [Struts 体系结构与工作原理][Struts]【蛮详细的讲解了Struts配置文件】 ###
> 
> ### [Java后台框架篇--Struts2.0控制器组件][Java_--Struts2.0] ###

**完整的WEB.xml配置SSH代码 :**

<?xml version="1.0" encoding="UTF-8"?>
    <web-app version="2.5" 
    	xmlns="http://java.sun.com/xml/ns/javaee" 
    	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
    	http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
    	
    	
        <context-param>
    		<param-name>contextConfigLocation</param-name>
    		<param-value>classpath:applicationContext.xml</param-value>
    	</context-param>  
    	  
        <listener>
            <listener-class>
                org.springframework.web.context.ContextLoaderListener
            </listener-class>
        </listener>	
        <listener>
    		<listener-class>
    			org.springframework.web.util.IntrospectorCleanupListener
    		</listener-class>
    	</listener>
    	  
    	<filter>
    		<filter-name>encodingFilter</filter-name>
    		<filter-class>
    			org.springframework.web.filter.CharacterEncodingFilter
    		</filter-class>
    		<init-param>
    			<param-name>encoding</param-name>
    			<param-value>UTF-8</param-value>
    		</init-param>
    	</filter>
    
    	<filter-mapping>
    		<filter-name>encodingFilter</filter-name>
    		<url-pattern>*.action</url-pattern>
    	</filter-mapping>
    	<filter>
    		<filter-name>hibernateFilter</filter-name>
    		<filter-class>
    			org.springframework.orm.hibernate3.support.OpenSessionInViewFilter
    		</filter-class>
    	</filter>
    
    
    	<filter-mapping>
    		<filter-name>hibernateFilter</filter-name>
    		<url-pattern>/*</url-pattern>
    	</filter-mapping> 
        <filter>
    		<filter-name>struts2</filter-name>
    		<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
    	</filter>
    	<filter-mapping>
    		<filter-name>struts2</filter-name>
    		<url-pattern>/*</url-pattern>
    	</filter-mapping>
    	
      <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
      </welcome-file-list>
    </web-app>

> ### 了解：[过滤器Filter配置web.xml（SSM、SSH）][Filter_web.xml_SSM_SSH] ###

[The Struts dispatcher cannot be found]: https://blog.csdn.net/u010287342/article/details/38061459
[tomcat_Line_ 220 - com_opensymphony_xwork2_spring_SpringObjectFactory.java_220_-1]: https://blog.csdn.net/FYXjsj/article/details/8695767
[SpringMVC_java.io.FileNotFoundException_ Could not open ServletContext resource _WEB-INF_xxxx.xml]: https://www.cnblogs.com/yxdz/p/7528351.html
[Struts]: https://blog.csdn.net/xttgx/article/details/4227385
[Java_--Struts2.0]: https://blog.csdn.net/hello_worldee/article/details/78129356
[Filter_web.xml_SSM_SSH]: https://blog.csdn.net/qq_41042595/article/details/89336124