spring4中获取泛型的bean

@Component
public class SpringContextHolder implements ApplicationContextAware{
private static ApplicationContext context;

public static ApplicationContext getContext() {
return context;
}

public static Object getBean(String beanName) {
return context.getBean(beanName);
}

public static <T> T getBean(Class<T> beanClass) {
return context.getBean(beanClass);
}

@Override
public void setApplicationContext(ApplicationContext paramApplicationContext)
throws BeansException {
context=paramApplicationContext;
}
}