package seecoder.devcloud.common.util;

import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;

import javax.annotation.PostConstruct;

/**
 * @author PuHong Weng
 * @date 2021/1/19
 * @description:
 */
@Slf4j
public class SpringUtil implements ApplicationContextAware {


    private static ApplicationContext applicationContext;

    public static SpringUtil springUtil ;

    @PostConstruct
    public void init() {
        springUtil = this;
    }

    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        if(SpringUtil.applicationContext == null) {
            SpringUtil.applicationContext = applicationContext;
        }
        log.info("ApplicationContext配置成功,在普通类可以通过调用SpringUtil.getAppContext()获取applicationContext对象,applicationContext="+SpringUtil.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);
    }
}