今天整合SSH，出現了這個問題Context initialization failed，很是郁悶。

ERROR [org.springframework.web.struts.ContextLoaderPlugIn] - Context initialization failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'headsService' defined in ServletContext resource [/WEB-INF/classes/applicationContext-heads.xml]: Initialization of bean failed; nested exception is org.springframework.beans.InvalidPropertyException: Invalid property 'hDao' of bean class [com.forestryInfo.biz.impl.HeadsBizImpl]: No property 'hDao' found
 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:478)
 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$1.getObject(AbstractBeanFactory.java:264)
 at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:220)
 at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:261)
 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.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:429)
 at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:729)
 at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:381)
 at org.springframework.web.struts.ContextLoaderPlugIn.createWebApplicationContext(ContextLoaderPlugIn.java:354)
 at org.springframework.web.struts.ContextLoaderPlugIn.initWebApplicationContext(ContextLoaderPlugIn.java:295)
 at org.springframework.web.struts.ContextLoaderPlugIn.init(ContextLoaderPlugIn.java:225)
 at org.apache.struts.action.ActionServlet.initModulePlugIns(ActionServlet.java:869)
 at org.apache.struts.action.ActionServlet.init(ActionServlet.java:336)
 at javax.servlet.GenericServlet.init(GenericServlet.java:212)
 at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1139)
 at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:966)
 at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:3956)
 at org.apache.catalina.core.StandardContext.start(StandardContext.java:4230)
 at org.apache.catalina.startup.HostConfig.checkResources(HostConfig.java:1116)
 at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1214)
 at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:293)
 at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:120)
 at org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1306)
 at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1570)
 at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1579)
 at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1559)
 at java.lang.Thread.run(Thread.java:619)
Caused by: org.springframework.beans.InvalidPropertyException: Invalid property 'hDao' of bean class [com.forestryInfo.biz.impl.HeadsBizImpl]: No property 'hDao' found
 at org.springframework.beans.BeanWrapperImpl.convertForProperty(BeanWrapperImpl.java:382)
 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.convertForProperty(AbstractAutowireCapableBeanFactory.java:1287)
 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1248)
 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1008)
 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:470) 


這里主要提示：
Error creating bean with name 'headsService' defined in ServletContext resource [/WEB-INF/classes/applicationContext-heads.xml]: Initialization of bean failed; nested exception is org.springframework.beans.InvalidPropertyException: Invalid property 'hDao' of bean class 



我找了好久錯誤的原因，但都沒有找到。
后面，我干脆講“hDao”改為“dao”，整個程序就能運行起來了。
很是無奈，想了好久還是想不明白。