import org.springframework.beans.BeansException; import org.springframework.context.ApplicationContext; import org.springframework.context.ApplicationContextAware; public class SpringContextHolder implements ApplicationContextAware { private static ApplicationContext applicationContext; @Override public void setApplicationContext(ApplicationContext applicationContext) throws BeansException { SpringContextHolder.applicationContext = applicationContext; } /** * 取得存储在静态变量中的ApplicationContext. */ public static ApplicationContext getApplicationContext() { checkApplicationContext(); return applicationContext; } /** * 从静态变量ApplicationContext中取得Bean, 自动转型为所赋值对象的类型. */ @SuppressWarnings("unchecked") public static <T> T getBean(String name) { checkApplicationContext(); return (T) applicationContext.getBean(name); } /** * 从静态变量ApplicationContext中取得Bean, 自动转型为所赋值对象的类型. */ @SuppressWarnings("unchecked") public static <T> T getBean(Class<T> clazz) { checkApplicationContext(); return (T) applicationContext.getBean(clazz); } /** * 清除applicationContext静态变量. */ public static void cleanApplicationContext() { applicationContext = null; } private static void checkApplicationContext() { if (applicationContext == null) { throw new IllegalStateException( "applicaitonContext未注入,请在applicationContext.xml中定义SpringContextHolder"); } } }
spring 获取全局所有Bean
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转载自blog.csdn.net/wyhjia/article/details/80603892
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