创建Bean时，class属性必须指定，此时为静态工厂类。 factory-method指定静态工厂方法名。
接口：
public interface Being {
public void testBeing();
}
Dog类
public class Dog implements Being{
private String msg;
public void setMsg(String msg) {
this.msg = msg;
}
@Override
public void testBeing() {
System.out.println(msg + " 狗爱啃骨头");
}
}
Cat类
public class Cat implements Being{
private String msg;
public void setMsg(String msg) {
this.msg = msg;
}
@Override
public void testBeing() {
System.out.println(msg + " 猫爱吃老鼠!");
}
}
Bean里配置
<?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-3.0.xsd">
<bean id="dog" class="com.springtest2.factory.BeingFactory"
factory-method="getBeing">
<constructor-arg value="dog" />
<property name="msg" value="我是狗" />
</bean> <bean id="cat" class="com.springtest2.factory.BeingFactory"
factory-method="getBeing">
<constructor-arg value="cat" />
<property name="msg" value="我是猫" />
</bean> </beans>
调用测试
private static void testFactory(){
ApplicationContext context = new ClassPathXmlApplicationContext(new String[]{"beans_factory.xml"});
Being b1 = context.getBean("dog", Being.class);
b1.testBeing();
Being b2 = context.getBean("cat", Being.class);
b2.testBeing();
}
输出结果