springMVC bean

springutil通用方法，用来获取单个bean对象。

 

 

package com.crfeb.tbmpt.commons.scan;

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

/**
 * @author：wbb
 * @date：2017-1-09 11:12
 */
@Component
public class SpringUtils implements ApplicationContextAware {

	private static ApplicationContext context;

	private SpringUtils() {}

	
	public void setApplicationContext(ApplicationContext context) throws BeansException {
		SpringUtils.context = context;
	}

	public static <T> T getBean(Class<T> clazz){
		if (clazz == null) return null;
		return context.getBean(clazz);
	}

	public static <T> T getBean(String beanName, Class<T> clazz) {
		if (null == beanName || "".equals(beanName.trim())) {
			return null;
		}
		if (clazz == null) return null;
		return (T) context.getBean(beanName, clazz);
	}

	public static ApplicationContext getContext(){
		if (context == null) return null;
		return context;
	}

	public static void publishEvent(ApplicationEvent event) {
		if (context == null) return;
		context.publishEvent(event);
	}

}