ApplicationContextAware 獲取任意bean信息

在xml中配置

<bean id="springAPPContextUtil" class="com.xxx.utils.SpringAppContextUtil" lazy-init="false"/>

@Component
public class SpringAppContextUtil implements ApplicationContextAware {
    private static ApplicationContext applicationContextHolder;

    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        setAppContext(applicationContext);
    }

    private static void setAppContext(ApplicationContext applicationContext){
        applicationContextHolder = applicationContext;
    }

    public static <T> T getBean(Class<T> clazz, String beanName) {
        return applicationContextHolder.getBean(beanName, clazz);
    }

    public static <T> Map<String, T> getBeanOfType(Class<T> clazz) {
        return applicationContextHolder.getBeansOfType(clazz);
    }

    /**
     * 獲取對象實例
     *
     * @param beanName
     * @return
     */
    public static Object getBean(String beanName) {
        return applicationContextHolder.getBean(beanName);
    }

    /**
     * 獲取對象實例
     *
     * @param beanName
     * @param clazz
     * @param <T>
     * @return
     */
    public static <T> T getBean(String beanName, Class<T> clazz) {
        return applicationContextHolder.getBean(beanName, clazz);
    }

    /**
     * 獲取對象實例
     *
     * @param clazz
     * @param <T>
     * @return
     */
    public static <T> T getBean(Class<T> clazz) {
        return applicationContextHolder.getBean(clazz);
    }
}