利用SpringBeanUtil 来获取 IOC 容器中的bean

有时候在代码中，不希望使用自动注入，而是手动获取Spring容器以及Spring容器中的某个对象

1、首先写一个class实现ApplicationContextAware

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
 
@Component
public class SpringBeanUtil implements ApplicationContextAware {
 
    private static ApplicationContext applicationContext;
 
    @Override
    public void setApplicationContext(ApplicationContext applicationContext)
            throws BeansException {
        SpringBeanUtil.applicationContext = applicationContext;
    }
 
    /**
     * 通过名称在spring容器中获取对象
     * 
     * @param beanName
     * @return
     */
    public static Object getBean(String beanName) {
        return applicationContext.getBean(beanName);
    }
 
}

 

2、在代码调用SpringBeanUtil的getBean获取指定的bean对象了