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                ??碼云GVP開源項目 12k star Uniapp+ElementUI 功能強大 支持多語言、二開方便! 廣告
                一個Singleton的Bean中Autowired了一個prototype的Bean,每次調用SingletonBean.doSomething()時打印的對象是不是同一個呢? ~~~java @Service public class SingletonBean{ @Autowired private PrototypeBean prototypeBean; public void doSomething(){ System.out.println(prototypeBean.toString()); } } @Component @Scope(value="prototype") public class PrototypeBean{ } ~~~ 因為Singleton是單例的,所以在項目啟動時就會初始化,prototypeBean本質上只是它的一個Property,那么ApplicationContex中只存在一個SingletonBean和一個初始化SingletonBean時創建的一個prototype類型的PrototypeBean。 那么每次調用SingletonBean.doSomething()時,Spring會從ApplicationContex中獲取SingletonBean,每次獲取的SingletonBean是同一個,所以即便PrototypeBean是prototype的,但PrototypeBean仍然是同一個。每次打印出來的內存地址肯定是同一個
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