课堂上一直讲的是struts2.0.14和spring2.5的整合，今天有学生问struts2.1整合时的一些错误，列举一下解决办法吧：
1.java.lang.RuntimeException: java.lang.RuntimeException: com.opensymphony.xwork2.inject.DependencyException:
com.opensymphony.xwork2.inject.ContainerImpl$MissingDependencyException: No mapping found for dependency [type=java.lang.String, name='actionPackages'] in public void org.apache.struts2.config.ClasspathPackageProvider.setActionPackages(java.lang.String). at com.opensymphony.xwork2.inject.ContainerBuilder$4.create(ContainerBuilder.java:132) at com.opensymphony.xwork2.inject.Scope$2$1.create(Scope.java:51) ......
解决办法：删除struts2-codebehind-plugin包 2.严重: Actual exception Could not load class org.apache.struts2.jsf.FacesSetupInterceptor. Perhaps it exists but certain dependencies are not available? - interceptor - jar:file:/D:/ghl/apache-tomcat-6.0.20/wtpwebapps/SS/WEB-INF/lib/struts2-jsf-plugin-2.1.8.1.jar!/struts-plugin.xml:35:97 at com.opensymphony.xwork2.ObjectFactory.buildInterceptor(ObjectFactory.java:202)
......解决办法：删除struts2-jsf-plugin-2.1.8.1.jar
3.
严重: Actual exception
Could not load class org.apache.struts2.portlet.interceptor.PortletAwareInterceptor. Perhaps it exists but certain dependencies are not available? - interceptor - jar:file:/E:/Program Files/apache-tomcat-6.0.16/webapps/Bysj_douxinchun/WEB-INF/lib/struts2-portlet-plugin-2.2.1.jar!/struts-plugin.xml:48:114
......
解决办法：删除struts2-portlet-plugin-2.1.8.1.jar 4.asm包的问题，估计是重复，去掉asm2.2.3.jar。 5.osgi包的问题，报错，解决办法：全部删除。
4.在使用form表单时，如果用action=*.action;会报404，去掉".action"，这一点恰好与2.0相反。
6.一个常见的hibernate错误： org.springframework.orm.hibernate3.HibernateSystemException: a different object with the same identifier value was already associated with the session 出错原因：我在关联的双方都设置了cascade，解决办法：去掉<many-to-one>属性中的cascade属性。
