参考文章

 

版本说明

• JDK 1.7
• Spring3.2.14

          
       
        org.springframework
           
       
        spring-context
           
       
        3.2.14.RELEASE
       
      

 

Java项目中，启动Spring IoC、获取Bean

CLASS PATH下放一个最简单的Spring配置文件

 

需要由Spring托管的Bean Class

package com.nicchagil.springapplication.No001initSpringIocAndGetABean.bean;public class DemoBean {        public String test() {        return "hello spring...";    }}

 

调用类

package com.nicchagil.springapplication.No001initSpringIocAndGetABean;import org.springframework.context.ApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;import com.nicchagil.springapplication.No001initSpringIocAndGetABean.bean.DemoBean;public class Call {    public static void main(String[] args) {        ApplicationContext context =                new ClassPathXmlApplicationContext("spring.xml");        DemoBean d1 = context.getBean("demoBean", DemoBean.class);        DemoBean d2 = context.getBean("demoBean", DemoBean.class);                /* execu the method*/        System.out.println(d1.test());        System.out.println(d2.test());                /* default singleton */        System.out.println("demoBean isSingleton ? -> " + context.isSingleton("demoBean"));        System.out.println(d1);        System.out.println(d2);        System.out.println("d1 == d2 -> " + (d1 == d2));    }}

 

日志

hello spring...hello spring...demoBean isSingleton ? -> truecom.nicchagil.springapplication.No001initSpringIocAndGetABean.bean.DemoBean@4857b188com.nicchagil.springapplication.No001initSpringIocAndGetABean.bean.DemoBean@4857b188d1 == d2 -> true