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spring BeanFactory加载xml配置文件示例

news 2024/5/14 10:39:32

项目目录结构如下：

HelloWorld.java

1 package com.thief.demo;
2 
3 public class HelloWorld {
4 
5     public void sayHello() {
6         System.out.println("hello world!");
7     }
8 
9 }

View Code

helloworld-config.xml

1 <?xml version="1.0" encoding="UTF-8"?>
2 <!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd" >
3 <beans>
4     <bean id="helloworld" class="com.thief.demo.HelloWorld"/>
5 </beans>

Test.java

 1 package com.thief.demo;
 2 
 3 import org.springframework.beans.factory.BeanFactory;
 4 import org.springframework.beans.factory.support.DefaultListableBeanFactory;
 5 import org.springframework.beans.factory.xml.XmlBeanDefinitionReader;
 6 
 7 public class Test {
 8 
 9     public static void main(String[] args) {
10         
11         DefaultListableBeanFactory beanRegistry = new DefaultListableBeanFactory();
12         XmlBeanDefinitionReader reader = new XmlBeanDefinitionReader(beanRegistry);
13         reader.loadBeanDefinitions("classpath:com/thief/demo/helloworld-config.xml");
14         BeanFactory container = (BeanFactory)beanRegistry;
15         
16         HelloWorld helloworld = (HelloWorld)container.getBean("helloworld");
17         helloworld.sayHello();
18         
19     }
20 
21 }