springutil获取ApplicationContext

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;

/**
* Spring 工具类
*
* @author zx
* @date 2011-10-13
*/

@Component("springUtils")
public class SpringUtils  implements ApplicationContextAware {


private static ApplicationContext applicationContext;

public SpringUtils() {

}
@Override
public void setApplicationContext(ApplicationContext context) throws BeansException {
this.applicationContext=context;
}
/**
* 根据beanName 获取 spring bean
* @param beanName
* @return Object
*/
public static  Object getBean(String beanName){
if(beanName==null)return null;
    return applicationContext.getBean(beanName);
}
/**
* 根据bean type 获取springBean
* @param clazz
* @return
*/
public static Object getBeanByType(Class clazz){
return applicationContext.getBean(clazz);
}

/**
* 获取 Spring applicationContext
* @return
*/
public static ApplicationContext getContext() {
return applicationContext;
}


}