Spring获取ApplicationContext对象工具类
（1）实现的工具类：
package com.util;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
final public class ApplicationContextUtil {
private static ApplicationContext ac=null;
private ApplicationContextUtil(){
}
static{
ac=new ClassPathXmlApplicationContext("applicationContext.xml");
}
public static ApplicationContext getApplicationContext(){
//获得返回的容器对象
return ac;
}
}
（2）使用方法：
public static void getByUtil(){
ApplicationContextUtil.getApplicationContext().getBean("userService");
}