spring ioc 容器装配bean

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applicationContext.xml 配置

<?xml version="1.0" encoding="UTF-8"?><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.xsd">

...</bean>

三种实力化bean的方式

1. 使用类构造器实例化。

public class User {}

<bean id="user1" class="com.zmf.domain.User"></bean>

2.静态工厂方法实例化

public class UserFactory {public static User getUserFactory(){return new User();}}

<bean id="userFactory" class="com.zmf.domain.UserFactory" factory-method="getUserFactory"></bean>

3.使用实例工厂方法实例化(工厂方法模式):

public class UserFactory2 {public User getUser(){return new User();}}

<bean id="userFactory2" class="com.zmf.domain.UserFactory2"></bean><bean id="user2" factory-bean="userFactory2" factory-method="getUser"></bean>

测试：

@Testpublic void test2(){User user =(User) applicationContext.getBean("userFactory");System.out.println(user);User user2 =(User) applicationContext.getBean("userFactory");System.out.println(user2);}@Testpublic void test3(){User user =(User) applicationContext.getBean("user2");System.out.println(user);User user2 =(User) applicationContext.getBean("user2");System.out.println(user2);}

另：applicationContext 获取方式

new ClassPathXmlApplicationContext("applicationContext.xml"); //classpath

new FileSystemXmlApplicationContext('c:\\xx.xml'); // 系统文件

http://blog.csdn.net/hi_kevin/article/details/7325554 ActionContext 与 BeanFactory的区别

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