今天在修改struts.xml时，默认package只有一个action时没有问题，在我添加了第{2..n}个action后会报错

[zoutao98]

这是我的action，在之前还是好好的，就在我添加了最后一个action后，就出现了下面的报错信息，但是当我删到只剩一个action时，又不会出错，我是真的没搞明白，怎么突然程序就跑不动了，然后在网上查了查，还是没嫩解决这个问题，项目也是重新部署了N次，还是会有这个错误，求大佬解惑。
这是我的action

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd">
<struts>
	<package name="default" extends="struts-default">
		<action name="userlogin" class="com.action.UserLoginAction">
			<result name="success">/usermain.jsp</result>
			<result name="error">/error.jsp</result>
		</action>
		<action name="myregister" class="com.action.RegisterAction">
			<result name="success">/__registerInfo.jsp</result>
		</action>
                <action name="userregister" class="com.action.UserRegisterAction">
			<result name="success">/usermain.jsp</result>
			<result name="error">/error.jsp</result>
		</action>
		<action name="userexit" class="com.action.UserExitAction">
			<result name="success" >/usermain.jsp</result>
		</action>
		<action name="modifyuserinfo" class="com.action.ModifyUserinfoAction">
			<result name="success">/userinfo.jsp</result>
			<result name="error">/error.jsp</result>
		</action>
		<action name="navoperate" class="com.action.NavOpreateAction">
			<result name="success">/userinfo.jsp</result>
			<result name="error">/error.jsp</result>
		</action>
	</package>
</struts>

这是我的报错信息

严重: Dispatcher initialization failed
Unable to load configuration. - action - file:/E:/MyEclipse%202017%20CI/Work%20Space/.metadata/.me_tcat85/webapps/Online/WEB-INF/classes/struts.xml:9:63
	at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:69)
	at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:371)
	at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:415)
	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.initFilter(ApplicationFilterConfig.java:279)
	at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:260)
	at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:105)
	at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4572)
	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5215)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
	at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:752)
	at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:728)
	at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:734)
	at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1107)
	at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1841)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)
Caused by: Action class [com.action.RegisterAction] not found - action - file:/E:/MyEclipse%202017%20CI/Work%20Space/.metadata/.me_tcat85/webapps/Online/WEB-INF/classes/struts.xml:9:63
	at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.verifyAction(XmlConfigurationProvider.java:420)
	at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.addAction(XmlConfigurationProvider.java:365)
	at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.addPackage(XmlConfigurationProvider.java:479)
	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)
	... 20 more
十一月 26, 2018 9:17:57 下午 org.apache.catalina.core.StandardContext filterStart
严重: Exception starting filter struts2
Unable to load configuration. - action - file:/E:/MyEclipse%202017%20CI/Work%20Space/.metadata/.me_tcat85/webapps/Online/WEB-INF/classes/struts.xml:9:63
	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.initFilter(ApplicationFilterConfig.java:279)
	at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:260)
	at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:105)
	at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4572)
	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5215)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
	at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:752)
	at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:728)
	at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:734)
	at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1107)
	at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1841)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)
Caused by: Unable to load configuration. - action - file:/E:/MyEclipse%202017%20CI/Work%20Space/.metadata/.me_tcat85/webapps/Online/WEB-INF/classes/struts.xml:9:63
	at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:69)
	at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:371)
	at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:415)
	... 18 more
Caused by: Action class [com.action.RegisterAction] not found - action - file:/E:/MyEclipse%202017%20CI/Work%20Space/.metadata/.me_tcat85/webapps/Online/WEB-INF/classes/struts.xml:9:63
	at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.verifyAction(XmlConfigurationProvider.java:420)
	at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.addAction(XmlConfigurationProvider.java:365)
	at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.addPackage(XmlConfigurationProvider.java:479)
	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)
	... 20 more