Spring框架在web应用中获得Bean的方法 实现getBean方法。
1.新建类,并实现 org.springframework.context.ApplicationContextAware 接口.
- package com.abc.framework.util;
- import org.springframework.beans.BeansException;
- import org.springframework.context.ApplicationContext;
- import org.springframework.context.ApplicationContextAware;
- /**
- * 在容器启动后,也可以通过 getBean(String name) 得到对象
- * @author Administrator
- * <!– 需要在spring.xml 里写 –>
- * <bean class=”com.abc.framework.util.ApplicationContextHandle” lazy-init=”false”/>
- */
- public class ApplicationContextHandle implements ApplicationContextAware{
- private static ApplicationContext applicationContext;
- @Override
- public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
- ApplicationContextHandle.applicationContext = applicationContext;
- }
- /**
- * 获取对象
- * 这里重写了bean方法，起主要作用
- * @param name
- * @return Object 一个以所给名字注册的bean的实例
- * @throws BeansException
- */
- public static Object getBean(String name) throws BeansException {
- return applicationContext.getBean(name);
- }
- }
2.在spring.xml内添加:
- <bean class=”com.abc.framework.util.ApplicationContextHandle” lazy-init=”false”/>
3.应用:
- private static final AttachmentService as = (AttachmentService)ApplicationContextHandle.getBean(“attachmentService”);