struts2+hibernate3+spring2.5 整合时,启动Tomcat就报错(项目见附件)

Question

[2010-03-10 16:20:11][com.opensymphony.xwork2.config.providers.XmlConfigurationProvider][ main:7453 ]-[ DEBUG ] Action verification cause
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'adminAction' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [ws.wskai.action.AdminAction]: Constructor threw exception; nested exception is java.lang.NullPointerException
 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:883)
 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:839)
 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:440)
 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:409)
 at java.security.AccessController.doPrivileged(Native Method)
 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:380)
 at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:283)
 at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:185)
 at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:164)
 at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:881)
 at com.opensymphony.xwork2.spring.SpringObjectFactory.getClassInstance(SpringObjectFactory.java:190)
 at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.verifyAction(XmlConfigurationProvider.java:366)
 at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.addAction(XmlConfigurationProvider.java:329)
 at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.addPackage(XmlConfigurationProvider.java:429)
 at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.loadPackages(XmlConfigurationProvider.java:239)
 at org.apache.struts2.config.StrutsXmlConfigurationProvider.loadPackages(StrutsXmlConfigurationProvider.java:111)
 at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reload(DefaultConfiguration.java:152)
 at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:52)
 at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:395)
 at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:452)
 at org.apache.struts2.dispatcher.FilterDispatcher.init(FilterDispatcher.java:201)
 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:4356)
 at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)
 at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
 at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:525)
 at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:924)
 at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:887)
 at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:492)
 at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1147)
 at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311)
 at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)
 at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
 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(NativeMethodAccessorImpl.java:39)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:597)
 at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)
 at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)
Caused by: org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [ws.wskai.action.AdminAction]: Constructor threw exception; nested exception is java.lang.NullPointerException
 at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:115)
 at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:61)
 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:877)
 ... 47 more
Caused by: java.lang.NullPointerException
 at ws.wskai.action.AdminAction.<init>(AdminAction.java:28)
 at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
 at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
 at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
 at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
 at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:100)
 ... 49 more
[2010-03-10 16:20:11][com.opensymphony.xwork2.config.providers.XmlConfigurationProvider][ main:7468 ]-[ DEBUG ] Loaded /jsp/admin/doLogin in '/' package:{ActionConfig adminAction.checkLogin() - action - file:/E:/apache-tomcat-6.0.16/webapps/music/WEB-INF/classes/admin-struts.xml:13:67}
[2010-03-10 16:20:11][com.opensymphony.xwork2.util.ObjectTypeDeterminerFactory][ main:7484 ]-[ INFO ] Setting DefaultObjectTypeDeterminer as default ...
[2010-03-10 16:20:11][org.springframework.orm.hibernate3.support.OpenSessionInViewFilter][ main:7500 ]-[ DEBUG ] Initializing filter 'lazyLoadingFilter'
[2010-03-10 16:20:11][org.springframework.orm.hibernate3.support.OpenSessionInViewFilter][ main:7515 ]-[ DEBUG ] Filter 'lazyLoadingFilter' configured successfully
2010-3-10 16:20:11 org.apache.coyote.http11.Http11Protocol start
信息: Starting Coyote HTTP/1.1 on http-8080
2010-3-10 16:20:11 org.apache.jk.common.ChannelSocket init
信息: JK: ajp13 listening on /0.0.0.0:8009
2010-3-10 16:20:11 org.apache.jk.server.JkMain start
信息: Jk running ID=0 time=0/47  config=null
2010-3-10 16:20:11 org.apache.catalina.startup.Catalina start
信息: Server startup in 8680 ms

Answer 1

错误信息说的是不能创建adminAction这样的错误信息已经说得很清楚了，控制器报出的就是这个类没有被映射到，查找错误
1.检查这个Action的 class路径是否正确
2.检查applicationContext.xml的配置是否正确
Caused by: java.lang.NullPointerException
at ws.wskai.action.AdminAction.(AdminAction.java:28)你的这里是不是采用spring注入对象了？如果有，检查相应的bean的配置是否正确，还有要提供get,set方法等等，一步一步检查！