实现ApplicationContextAware获得ApplicationContext

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;

@Component
public class SpringContextUtils implements ApplicationContextAware {
private static ApplicationContext applicationContext;
@Override
public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
this.applicationContext = applicationContext;
}
public static Object getBean(String name) {
return applicationContext.getBean(name);
}
/**

• 通过该类获取spring的Bean
• 
  
• @param clazz
• @param
• @return
  */
  public static T getBean(Class clazz) {
  return applicationContext.getBean(clazz);
  }

public static T getBean(String name, Class requiredType) {
return applicationContext.getBean(name, requiredType);
}
public static boolean containsBean(String name) {
return applicationContext.containsBean(name);
}
public static boolean isSingleton(String name) {
return applicationContext.isSingleton(name);
}
public static Class<?> getType(String name) {
return applicationContext.getType(name);
}
}