问题描述
首先，我的问题是使用struts2 + tile2 + toplink.根本没有春天.
At first some precondition to my question, I'm using struts2 + tiles2 + toplink. NO spring at all.
最简单的方案-在页面上显示实体列表.为了优化解析JPA的EntityManager，我想创建实现实体管理器延迟加载的助手(JPAResourceBean).为此，我将使用struts2的bean声明:
The simplest scenario - is to display list of entities on the page. To optimize resolving JPA's EntityManager I would like to create helper (JPAResourceBean) that implements lazy load of entity manager. For this purposes I'm going to use struts2's bean declaration:
<bean name="myfactory" class="my.model.JPAResourceBean"
scope="session" optional="false"/>
为什么在会话中都没有实例化bean? (我仅将s:property用于调试)
Why bean is not instantiated neither in session? (I'm using s:property just for debug)
...
<s:property value="#session.myfactory" default="buka.1"/>
...
在普通豆列表中也不是
...
<s:property value="#myfactory" default="buka.2"/>
...
问题的第二部分可能是-如何从Java代码中解析此bean?
May be the second part of question is - how to resolve this bean from java code?
推荐答案
我找到了解决方案.
问题是使用延迟加载(按需解决)方法实例化bean的struts，因此，当我通过以下语法访问它时，我的JPAResourceBean已成功解决:
The matter is struts using lazy load (resolve on demand) approach to instantiate beans, so my JPAResourceBean was successfully resolved when I've accessed it over following syntax:
ActionContext.getContext().getContainer().getInstance(JPAResourceBean.class);
这篇关于未创建struts 2 bean的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！