Spring Demo
1、导入spring的dist中的jar包和commons-logging包
2、在src目录下创建相应的beans.xml
3、为beans.xml添加相应的schema
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
</beans>
4、新建一个类
5、在beans.xml中创建对象
<!--
创建如下bean等于完成了:HelloWorld helloWorld = new HelloWorld
-->
<bean id="helloWorld" class="org.zttc.itat.spring.model.HelloWorld"/>
6、在测试类中使用这个对象
6.1、创建Spring的工厂
private BeanFactory factory = new ClassPathXmlApplicationContext("beans.xml");
6.2、通过Spring工厂获取相应的对象
//此处getBean中的helloWorld就是beans.xml配置文件中的id
HelloWorld hello = factory.getBean("helloWorld",HelloWorld.class);
//此时的hello对象就是被Spring说管理的对象
System.out.println(hello.hello());
package org.zttc.itat.spring.model;
public class HelloWorld {
public String hello() {
return "hello world";
}
}
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd>
<!--创建HelloWord 实例 -->
<bean id="helloWord" class="org.zttc.itat.spring.model.HelloWorld">
package org.zttc.itat.spring.test;
import org.junit.Test;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.zttc.itat.spring.action.UserAction;
import org.zttc.itat.spring.model.HelloWorld;
import org.zttc.itat.spring.model.User;
public class TestSpring {
//创建Spring的工厂
private BeanFactory factory = new ClassPathXmlApplicationContext("beans.xml");
@Test
public void testHello() {
//通过工厂获取Spring的对象
//此处getBean中的helloWorld就是beans.xml配置文件中的id
// HelloWorld hello = (HelloWorld)factory.getBean("helloWorld");
HelloWorld hello = factory.getBean("helloWorld",HelloWorld.class);
//此时的hello对象就是被Spring说管理的对象
System.out.println(hello.hello());
}
}
