开发环境：
Struts 1.2 + Spring 1.2.8 + Hibernate 3.2
遇到的问题：
org.hibernate.LazyInitializationException: could not initialize proxy - the owning Session was closed
at org.hibernate.proxy.AbstractLazyInitializer.initialize(AbstractLazyInitializer.java:60)
at org.hibernate.proxy.AbstractLazyInitializer.getImplementation(AbstractLazyInitializer.java:111)
at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke(CGLIBLazyInitializer.java:172)
at com.zhjy.gea.module.affair.domain.Affair$$EnhancerByCGLIB$$e10be950.getAffairCatalogs(<generated>)
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:585)
at org.apache.commons.beanutils.PropertyUtilsBean.invokeMethod(PropertyUtilsBean.java:2049)
分析原因：
由于Spring控制的Hibernate的生命周期只针对数据层和服务层，而未管理到表现层，所以会出现the owning Session was closed的现象。针对这一点，我通过hibernate filter的方式来解决。
解决方法：
在web.xml中配置filter来解决。
<!-- hibernate session filter --> < filter > < filter-name > hibernateFilter </ filter-name > < filter-class > org.springframework.orm.hibernate3.support.OpenSessionInViewFilter </ filter-class > </ filter > < filter-mapping > < filter-name > hibernateFilter </ filter-name > < url-pattern > *.do </ url-pattern > </ filter-mapping >