blocks|key|1167798|text|一种方法是定义自定义用户类型，并从那里的spring配置访问属性。但我认为你会从其他人那里得到更好的回复:)。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1167799|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

One way is to define custom user type and accessing properties from spring configuration over there. But I think you will get much better replies from others :).

blocks|key|1167860|text|有一个工具可以做到这一点，使用AspectJ+class+weaving+with+the+@Configurable+annotation。这将使用Spring依赖项自动连接带注释的类的任何new实例，包括使用Hibernate之类的反射实例化的对象。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1167861|它确实需要一些类加载魔术，因此依赖于compatibility+with+your+server+platform。|1167862|entityMap|0|LINK|mutability|MUTABLE|url|http://static.springsource.org/spring/docs/3.0.x/spring-framework-reference/html/aop.html#aop-atconfigurable|1|http://static.springsource.org/spring/docs/3.0.x/spring-framework-reference/html/aop.html#aop-aj-ltw^0|1A|D|2O|3|F|1J|0|0|I|13|1|0^^$0|@$1|2|3|4|5|6|7|R|8|@$9|S|A|T|B|C]|$9|U|A|V|B|C]]|D|@$9|W|A|X|1|Y]]|E|$]]|$1|F|3|G|5|6|7|Z|8|@]|D|@$9|10|A|11|1|12]]|E|$]]|$1|H|3|-4|5|6|7|13|8|@]|D|@]|E|$]]]|I|$J|$5|K|L|M|E|$N|O]]|P|$5|K|L|M|E|$N|Q]]]]

There is a facility for this, using <a href="http://static.springsource.org/spring/docs/3.0.x/spring-framework-reference/html/aop.html#aop-atconfigurable" rel="noreferrer">AspectJ class weaving with the <code>@Configurable</code> annotation</a>. This will auto-wire any <code>new</code> instance of an annotated class with Spring dependencies, including objects instantiated via reflection using the likes of Hibernate.

It does require some class-loading magic, and so depends on <a href="http://static.springsource.org/spring/docs/3.0.x/spring-framework-reference/html/aop.html#aop-aj-ltw" rel="noreferrer">compatibility with your server platform</a>.

blocks|key|953694|text|虽然the+aspectj+way可以工作，但我想说标准的spring+/+hibernate方法是注册一个LoadEventListener+(在hibernate+core+reference、spring+reference和this+thread中阅读更多)|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|953695|下面是spring+sessionfactory+bean定义的一小段代码|953696|<bean+id="mySessionFactory"
++++class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
++++...
++++<property+name="eventListeners">
++++++++<map>
++++++++++++<entry+key="post-load">
++++++++++++++++<bean+class="com.foo.spring.MyLoadListener"></bean>
++++++++++++</entry>
++++++++</map>
++++</property>
</bean>|code-block|syntax|javascript|953697|下面是LoadEventListener：|953698|public+class+MyLoadListener+implements+LoadEventListener{

++++public+void+setSpringManagedProperty(String+springManagedProperty){
++++++++this.springManagedProperty+=+springManagedProperty;
++++}
++++private+String+springManagedProperty;

++++@Override
++++public+void+onLoad(LoadEvent+event,+LoadType+loadType)+throws+HibernateException{
++++++++if(MyEntity.class.getName().equals(event.getEntityClassName())){
++++++++++++MyEntity+entity+=+(MyEntity)+event.getInstanceToLoad();
++++++++++++entity.setMyCustomProperty(springManagedProperty);
++++++++}

++++}

}|953699|听着妈妈，不需要aspectj。|953700|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/3505421/injecting-fields-via-spring-into-entities-loaded-by-hibernate/3505484#3505484|1|http://docs.jboss.org/hibernate/core/3.5/javadoc/index.html?org/hibernate/event/LoadEventListener.html|2|http://docs.jboss.org/hibernate/core/3.5/reference/en/html_single/#objectstate-events|3|http://static.springsource.org/spring/docs/3.0.x/spring-framework-reference/html/orm.html#orm-hibernate|4|http://forum.springsource.org/archive/index.php/t-24943.html^0|2|F|0|1I|H|1|22|O|2|2R|G|3|38|B|4|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|16|8|@]|9|@$A|17|B|18|1|19]|$A|1A|B|1B|1|1C]|$A|1D|B|1E|1|1F]|$A|1G|B|1H|1|1I]|$A|1J|B|1K|1|1L]]|C|$]]|$1|D|3|E|5|6|7|1M|8|@]|9|@]|C|$]]|$1|F|3|G|5|H|7|1N|8|@]|9|@]|C|$I|J]]|$1|K|3|L|5|6|7|1O|8|@]|9|@]|C|$]]|$1|M|3|N|5|H|7|1P|8|@]|9|@]|C|$I|J]]|$1|O|3|P|5|6|7|1Q|8|@]|9|@]|C|$]]|$1|Q|3|-4|5|6|7|1R|8|@]|9|@]|C|$]]]|R|$S|$5|T|U|V|C|$W|X]]|Y|$5|T|U|V|C|$W|Z]]|10|$5|T|U|V|C|$W|11]]|12|$5|T|U|V|C|$W|13]]|14|$5|T|U|V|C|$W|15]]]]

While <a href="https://stackoverflow.com/questions/3505421/injecting-fields-via-spring-into-entities-loaded-by-hibernate/3505484#3505484">the aspectj way</a> works, I'd say the standard spring / hibernate way is to register a <a href="http://docs.jboss.org/hibernate/core/3.5/javadoc/index.html?org/hibernate/event/LoadEventListener.html" rel="nofollow noreferrer">LoadEventListener</a> (read more in the <a href="http://docs.jboss.org/hibernate/core/3.5/reference/en/html_single/#objectstate-events" rel="nofollow noreferrer">hibernate core reference</a>, the <a href="http://static.springsource.org/spring/docs/3.0.x/spring-framework-reference/html/orm.html#orm-hibernate" rel="nofollow noreferrer">spring reference</a> and <a href="http://forum.springsource.org/archive/index.php/t-24943.html" rel="nofollow noreferrer">this thread</a>)

here is a snip from the spring sessionfactory bean definition

<pre><code>&lt;bean id="mySessionFactory"
 class="org.springframework.orm.hibernate3.LocalSessionFactoryBean"&gt;
 ...
 &lt;property name="eventListeners"&gt;
 &lt;map&gt;
 &lt;entry key="post-load"&gt;
 &lt;bean class="com.foo.spring.MyLoadListener"&gt;&lt;/bean&gt;
 &lt;/entry&gt;
 &lt;/map&gt;
 &lt;/property&gt;
&lt;/bean&gt;
</code></pre>

and here is the LoadEventListener:

<pre><code>public class MyLoadListener implements LoadEventListener{

 public void setSpringManagedProperty(String springManagedProperty){
 this.springManagedProperty = springManagedProperty;
 }
 private String springManagedProperty;

 @Override
 public void onLoad(LoadEvent event, LoadType loadType) throws HibernateException{
 if(MyEntity.class.getName().equals(event.getEntityClassName())){
 MyEntity entity = (MyEntity) event.getInstanceToLoad();
 entity.setMyCustomProperty(springManagedProperty);
 }

 }

}
</code></pre>

Look mom, no aspectj needed.

blocks|key|1167999|text|您可以将依赖项注入到实体的hibernate+DAO+bean中，并在从DAO返回属性之前设置实体的属性。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1168000|只有当您从DAO加载实体时，这才会起作用|1168001|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

You can inject the dependency into the hibernate DAO bean for the entity and set the property on the entity before returning it from the DAO.

This will only work if you are loading the entity from the DAO

I am looking for a way to inject certain properties via Spring in a bean that is loaded from the DB by Hibernate.

E.g.

<pre><code>class Student {
 int id; //loaded from DB
 String name; //loaded from DB
 int injectedProperty; //Inject via Spring
}
</code></pre>

Can I configure Spring so that whenever Hibernate creates objects of class Student, some properties as defined in some applicationContext file are injected with the object creation?

Injecting fields via Spring into entities loaded by Hibernate

我正在寻找一种方法，可以通过Spring将某些属性注入到由Hibernate从DB加载的bean中。例如。class Student {   int id; //loaded from DB   String name; //loaded from DB   int injectedProperty; //Inject...

问通过Spring将字段注入Hibernate加载的实体
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