struts2.1.6使用中出现的一点小问题
最近开始学习struts2，使用2.1.6版本。方法是阅读项目的源码，之前有学习过webwork所以还好上手整合S2SH，启动tomcat报出异常如下
网上也有很多人出现这个问题，搜索了下没有好的解决办法，想了下可能引入struts-default的原因，
于是将struts-default.xml导入到classpath下所有问题都解决了，
在struts2.1.6中已经找不到struts-default.xml 还有*.tld 不知道什么原因，网上有人说是从2.0.8版本后需要maven源文件包才能发现，本人是新手maven不了解。
问题是解决了，不过原因还不清楚，如果谁了解的话，请留言谢谢
严重: Exception starting filter struts2 java.lang.RuntimeException: java.lang.RuntimeException: com.opensymphony.xwork2.inject.DependencyException: com.opensymphony.xwork2.inject.ContainerImpl$MissingDependencyException: No mapping found for dependency [type=com.opensymphony.xwork2.util.reflection.ReflectionProvider, name='default'] in public void com.opensymphony.xwork2.ObjectFactory.setReflectionProvider(com.opensymphony.xwork2.util.reflection.ReflectionProvider). at com.opensymphony.xwork2.inject.ContainerBuilder$4.create(ContainerBuilder.java:132) at com.opensymphony.xwork2.inject.Scope$2$1.create(Scope.java:51) at com.opensymphony.xwork2.inject.ContainerImpl.getInstance(ContainerImpl.java:507) at com.opensymphony.xwork2.inject.ContainerImpl.getInstance(ContainerImpl.java:517) at com.opensymphony.xwork2.inject.ContainerImpl$9.call(ContainerImpl.java:548) at com.opensymphony.xwork2.inject.ContainerImpl.callInContext(ContainerImpl.java:574) at com.opensymphony.xwork2.inject.ContainerImpl.getInstance(ContainerImpl.java:546) at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reloadContainer(DefaultConfiguration.java:182) at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:55) at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:403) at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:453) at org.apache.struts2.dispatcher.FilterDispatcher.init(FilterDispatcher.java:190) at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:275) at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:397) at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:108) at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:3709) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4363) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045) at org.apache.catalina.core.StandardHost.start(StandardHost.java:719) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045) at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443) at org.apache.catalina.core.StandardService.start(StandardService.java:516) at org.apache.catalina.core.StandardServer.start(StandardServer.java:710) at org.apache.catalina.startup.Catalina.start(Catalina.java:578) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413) Caused by: java.lang.RuntimeException: com.opensymphony.xwork2.inject.DependencyException: com.opensymphony.xwork2.inject.ContainerImpl$MissingDependencyException: No mapping found for dependency [type=com.opensymphony.xwork2.util.reflection.ReflectionProvider, name='default'] in public void com.opensymphony.xwork2.ObjectFactory.setReflectionProvider(com.opensymphony.xwork2.util.reflection.ReflectionProvider). at com.opensymphony.xwork2.inject.ContainerImpl.inject(ContainerImpl.java:495) at com.opensymphony.xwork2.inject.ContainerImpl$7.call(ContainerImpl.java:532) at com.opensymphony.xwork2.inject.ContainerImpl.callInContext(ContainerImpl.java:581) at com.opensymphony.xwork2.inject.ContainerImpl.inject(ContainerImpl.java:530) at com.opensymphony.xwork2.config.impl.LocatableFactory.create(LocatableFactory.java:32) at com.opensymphony.xwork2.inject.ContainerBuilder$4.create(ContainerBuilder.java:130) ... 29 more Caused by: com.opensymphony.xwork2.inject.DependencyException: com.opensymphony.xwork2.inject.ContainerImpl$MissingDependencyException: No mapping found for dependency [type=com.opensymphony.xwork2.util.reflection.ReflectionProvider, name='default'] in public void com.opensymphony.xwork2.ObjectFactory.setReflectionProvider(com.opensymphony.xwork2.util.reflection.ReflectionProvider). at com.opensymphony.xwork2.inject.ContainerImpl.addInjectorsForMembers(ContainerImpl.java:144) at com.opensymphony.xwork2.inject.ContainerImpl.addInjectorsForMethods(ContainerImpl.java:113) at com.opensymphony.xwork2.inject.ContainerImpl.addInjectors(ContainerImpl.java:90) at com.opensymphony.xwork2.inject.ContainerImpl.addInjectors(ContainerImpl.java:86) at com.opensymphony.xwork2.inject.ContainerImpl.addInjectors(ContainerImpl.java:86) at com.opensymphony.xwork2.inject.ContainerImpl$1.create(ContainerImpl.java:71) at com.opensymphony.xwork2.inject.ContainerImpl$1.create(ContainerImpl.java:69) at com.opensymphony.xwork2.inject.util.ReferenceCache$CallableCreate.call(ReferenceCache.java:150) at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source) at java.util.concurrent.FutureTask.run(Unknown Source) at com.opensymphony.xwork2.inject.util.ReferenceCache.internalCreate(ReferenceCache.java:76) at com.opensymphony.xwork2.inject.util.ReferenceCache.get(ReferenceCache.java:116) at com.opensymphony.xwork2.inject.ContainerImpl$ConstructorInjector.<init>(ContainerImpl.java:348) at com.opensymphony.xwork2.inject.ContainerImpl$5.create(ContainerImpl.java:305) at com.opensymphony.xwork2.inject.ContainerImpl$5.create(ContainerImpl.java:304) at com.opensymphony.xwork2.inject.util.ReferenceCache$CallableCreate.call(ReferenceCache.java:150) at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source) at java.util.concurrent.FutureTask.run(Unknown Source) at com.opensymphony.xwork2.inject.util.ReferenceCache.internalCreate(ReferenceCache.java:76) at com.opensymphony.xwork2.inject.util.ReferenceCache.get(ReferenceCache.java:116) at com.opensymphony.xwork2.inject.ContainerImpl.getConstructor(ContainerImpl.java:594) at com.opensymphony.xwork2.inject.ContainerImpl.inject(ContainerImpl.java:491) ... 34 more Caused by: com.opensymphony.xwork2.inject.ContainerImpl$MissingDependencyException: No mapping found for dependency [type=com.opensymphony.xwork2.util.reflection.ReflectionProvider, name='default'] in public void com.opensymphony.xwork2.ObjectFactory.setReflectionProvider(com.opensymphony.xwork2.util.reflection.ReflectionProvider). at com.opensymphony.xwork2.inject.ContainerImpl.createParameterInjector(ContainerImpl.java:235) at com.opensymphony.xwork2.inject.ContainerImpl.getParametersInjectors(ContainerImpl.java:225) at com.opensymphony.xwork2.inject.ContainerImpl$MethodInjector.<init>(ContainerImpl.java:287) at com.opensymphony.xwork2.inject.ContainerImpl$3.create(ContainerImpl.java:117) at com.opensymphony.xwork2.inject.ContainerImpl$3.create(ContainerImpl.java:115) at com.opensymphony.xwork2.inject.ContainerImpl.addInjectorsForMembers(ContainerImpl.java:141) ... 55 more
网上也有很多人出现这个问题，搜索了下没有好的解决办法，想了下可能引入struts-default的原因，
于是将struts-default.xml导入到classpath下所有问题都解决了，
在struts2.1.6中已经找不到struts-default.xml 还有*.tld 不知道什么原因，网上有人说是从2.0.8版本后需要maven源文件包才能发现，本人是新手maven不了解。
问题是解决了，不过原因还不清楚，如果谁了解的话，请留言谢谢