Spring获取bean实例最佳方式-SpringContextUtil

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2013年09月01日 ⁄ 综合 ⁄ 共 1992字 ⁄ 字号小中大 ⁄ 评论关闭

package org.company.xxx;
import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
/**
*
* 获取spring容器，以访问容器中定义的其他bean
* @author lyltiger
* @since MOSTsView 3.0 2009-11-16
*/
public class SpringContextUtil implements ApplicationContextAware {
// Spring应用上下文环境
private static ApplicationContext applicationContext;
/**
* 实现ApplicationContextAware接口的回调方法，设置上下文环境
*
* @param applicationContext
*/
public void setApplicationContext(ApplicationContext applicationContext) {
SpringContextUtil.applicationContext = applicationContext;
}
/**
* @return ApplicationContext
*/
public static ApplicationContext getApplicationContext() {
return 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);
}
}

public class SpringBeans{
private static ApplicationContext factory;
private static ServletContext sc ;
private static final String APPLICATION_CONTEXT = "//WEB-INF//applicationContext.xml";
private static final String DAO_CONTEXT = "//WEB-INF//daoHibernateContext.xml";
public static Object getBean(String beanID){
factory = getFactory();
return factory.getBean(beanID);
}
private static ApplicationContext getFactory(){
sc = MyServletContext.getServletContext();
String aAC = sc.getRealPath(APPLICATION_CONTEXT);
String aDC = sc.getRealPath(DAO_CONTEXT);
ApplicationContext tmpfactory = new FileSystemXmlApplicationContext(
new String[] { aAC , aDC});
return tmpfactory;
}
}

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