怎么获取Spring的ApplicationContext
怎么获取Spring的ApplicationContext
方法如下:
实现
1.创建一个类让其实现org.springframework.context.ApplicationContextAware接口来让Spring在启动的时候为我们注入ApplicationContext对象.
示例代码:
import org.springframework.beans.BeansException
import org.springframework.context.ApplicationContext
import org.springframework.context.ApplicationContextAware
public class MyApplicationContextUtil implements ApplicationContextAware {
private static ApplicationContext context
//声明一个静态变量保存
public void setApplicationContext(ApplicationContext contex) throws BeansException {
this.context=contex
}
public static ApplicationContext getContext(){
return context
}
public final static Object getBean(String beanName){
return context.getBean(beanName)
}
public final static Object getBean(String beanName, Class requiredType) {
return context.getBean(beanName, requiredType)
}
}
2.在applicationContext.xml文件中配置此bean,以便让Spring启动时自动为我们注入ApplicationContext对象.
例:
3.有了这个ApplicationContext之后我们就可以调用其getBean("beanName")方法来得到由Spring 管理所有对象.