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annotation | Ahir's Blog #4

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Mintneko opened this issue Jan 12, 2022 · 0 comments
Open

annotation | Ahir's Blog #4

Mintneko opened this issue Jan 12, 2022 · 0 comments
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@Mintneko
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https://mintneko.github.io/2022/01/12/annotation/#Component

@Autowired 注解AutowiredAnnotationBeanPostProcessor在处理依赖注入时，从bean工厂中去获取，首先是根据字段的类型去找符合条件的bean，若得到的bean有多个，则找出有@primary注解修饰的bean，若都没有，则退化成@resource注解的功能，即根据字段名去寻找bean，若都没有，则会抛出找到多个bean的异常。可以定位到org.spring
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