java - 从spring bean名称获取类对象

Question

我无法找到 spring bean 的类。我目前拥有的唯一信息是 bean id。

在我的应用程序上下文中，我有以下 bean:

 <bean id="someConfig" class="com.foo.bar.GenericConfig">

我目前只有类“someConfig”的名称。如何从 bean 名称获取 Class？有没有办法在不使用 ApplicationContext.getBean() 的情况下执行此操作？

理想情况下，我希望能够做这样的事情:

Class<?> clazz = getClass("someConfig");

Answer 1

正如您在 javadoc 中看到的那样有一个方法 getType 返回该类。

getType Class getType(String name) throws NoSuchBeanDefinitionException

Determine the type of the bean with the given name. More specifically, determine the type of object that getBean(java.lang.String) would return for the given name. For a FactoryBean, return the type of object that the FactoryBean creates, as exposed by FactoryBean.getObjectType().

Translates aliases back to the corresponding canonical bean name. Will ask the parent factory if the bean cannot be found in this factory instance.

Parameters:

name - the name of the bean to query

Returns:

the type of the bean, or null if not determinable

Throws:

NoSuchBeanDefinitionException - if there is no bean with the given name

Since:

1.1.2

See Also:

getBean(java.lang.String), isTypeMatch(java.lang.String, org.springframework.core.ResolvableType)