普通java类获取spring容器的方法

参考文章连接

实现ApplicationContextAware接口会往实现类里面启动的时候注入一个applicationContext

 工具类SpringContextUtils

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;
@Component("springContextUtils")
public class SpringContextUtils implements ApplicationContextAware {
    private static ApplicationContext applicationContext;
    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        this.applicationContext = applicationContext;
    }
    @SuppressWarnings("unchecked")
    public static <T> T getBean(String beanId) {
        return (T) applicationContext.getBean(beanId);
    }
    public static <T> T getBean(Class<T> requiredType) {
        return (T) applicationContext.getBean(requiredType);
    }
}

如何使用