早上看到spring代码中有有缓存bean的Map如下:
public abstract class FactoryBeanRegistrySupport extends DefaultSingletonBeanRegistry {
/** Cache of singleton objects created by FactoryBeans: FactoryBean name --> object */
private final Map<String, Object> factoryBeanObjectCache = new ConcurrentHashMap<String, Object>();
如果想找到factoryBeanObjectCache 这个Map,但是FactoryBeanRegistrySupport 是抽象的,发现OQL这样写可以查询出来,还是非常方便;
SELECT s FROM INSTANCEOF org.springframework.beans.factory.support.FactoryBeanRegistrySupport s
这样就查出来org.springframework.beans.factory.support.DefaultListableBeanFactory 这样的对象,然后用outgoing refences 查看到对象中含有。
factoryBeanObjectCache 属性;
OQL 还有很多高级用法,参考:
https://visualvm.java.net/oqlhelp.html
spring中有三种实例化bean的方式 http://www.cnblogs.com/killbug/p/3283382.html
来源:oschina
链接:https://my.oschina.net/u/177808/blog/197617