package com.zxguan;

import org.springframework.beans.BeansException;

import org.springframework.context.ApplicationContext;

import org.springframework.context.ApplicationContextAware;

/**

 * @author zxguan

 * @description

 * @create 2018-01-29 15:21

 */

public class SpringUtil implements ApplicationContextAware {

    private static ApplicationContext applicationContext = null;

    @Override

    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {

        if(SpringUtil.applicationContext == null){

            SpringUtil.applicationContext  = applicationContext;

        }

    }

    //获取applicationContext

    public static ApplicationContext getApplicationContext() {

        return applicationContext;

    }

    //通过name获取 Bean.

    public static Object getBean(String name){

        return getApplicationContext().getBean(name);

    }

    //通过class获取Bean.

    public static <T> T getBean(Class<T> clazz){

        return getApplicationContext().getBean(clazz);

    }

    //通过name,以及Clazz返回指定的Bean

    public static <T> T getBean(String name,Class<T> clazz){

        return getApplicationContext().getBean(name, clazz);

    }

}