Spring Aware 接口实现

最新推荐文章于 2024-10-18 13:53:16 发布

翻译最新推荐文章于 2024-10-18 13:53:16 发布 · 117 阅读

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本文探讨了在Spring框架中如何实现BeanNameAware接口来获取当前Bean的名称，以及通过ApplicationContextAware接口获取当前Bean的ApplicationContext上下文。示例代码展示了具体实现方式。

import org.springframework.beans.factory.BeanNameAware;
public class NamedSinger implements BeanNameAware {
    private String name;
    /** @Implements {@link BeanNameAware#setBeanName(String)} */
    public void setBeanName(String beanName)  {
        this.name = beanName;
    }
    public void sing() {
        System.out.println("Singer " + name + " - sing()");
    }
}

获取当前Bean名称

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.context.support.GenericApplicationContext;
public class ShutdownHookBean implements ApplicationContextAware  {
    private ApplicationContext ctx;
        /** @Implements {@link ApplicationContextAware#s
           etApplicationContext(ApplicationContext)}    }*/
    public void setApplicationContext(ApplicationContext ctx)
        throws BeansException {
        if (ctx instanceof GenericApplicationContext) {
            ((GenericApplicationContext)  ctx).registerShutdownHook();
        }
    }
}

和获取当前Bean的ApplicationContext