jetbrick-ioc/src/main/java/jetbrick/ioc/MutableIoc.java
@Override
    @SuppressWarnings("unchecked")
    public <T> T getBean(Class<T> beanClass) {
        Validate.notNull(beanClass);
        return (T) getBean(beanClass.getName());
    }
@Override
    @SuppressWarnings("unchecked")
    public <T> T getBean(Class<T> beanClass) {
        Validate.notNull(beanClass);
        return (T) getBean(beanClass.getName());
    }
获取一个 Bean