1 package com.demo; 2  3 import org.springframework.beans.BeansException; 4 import org.springframework.context.ApplicationContext; 5 import org.springframework.context.ApplicationContextAware; 6 import org.springframework.stereotype.Component; 7  8 @Component 9 public class SpringUtils implements ApplicationContextAware {10     private static ApplicationContext applicationContext = null;11 12     @Override13     public void setApplicationContext(ApplicationContext arg0) throws BeansException {14         if (SpringUtils.applicationContext == null) {15             SpringUtils.applicationContext = arg0;16         }17     }18 19     // 获取applicationContext20     public static ApplicationContext getApplicationContext() {21         return applicationContext;22     }23 24     // 通过name获取 Bean.25     public static Object getBean(String name) {26         return getApplicationContext().getBean(name);27     }28 29     // 通过class获取Bean.30     public static <T> T getBean(Class<T> clazz) {31         return getApplicationContext().getBean(clazz);32     }33 34     // 通过name,以及Clazz返回指定的Bean35     public static <T> T getBean(String name, Class<T> clazz) {36         return getApplicationContext().getBean(name, clazz);37     }38 39 }