Spring中实例化Bean的3种方式

实例化Bean的3种方式：

1.使用类构造器实例化：

<bean id="personServiceBean" class="com.spring.service.impl.PersonServiceBean"></bean>

参考Spring环境的搭建及示例文章

2.使用静态工厂方法实例化：

<bean id="peronServiceBeanFactory" class="com.spring.service.impl.PersonServiceBeanFactory"
		factory-method="pcreatePersonServiceBanFactory"></bean>

 PersonServiceBeanFactory代码如下：

package com.spring.service.impl;

public class PersonServiceBeanFactory {
	public static PersonServiceBean pcreatePersonServiceBanFactory() {
		return new PersonServiceBean(); 
	}
}

  

 3.使用示例工厂方法实例化：

	<bean id="personServiceBeanFactory" class="com.spring.service.impl.PersonServiceBeanFactory"></bean>
	<bean id="personService" factory-bean="personServiceBeanFactory"
		factory-method="createPersonServiceBanFactory"></bean>

 PersonServiceBeanFactory代码如下：

package com.spring.service.impl;

public class PersonServiceBeanFactory {	
	public PersonServiceBean createPersonServiceBanFactory() {
		return new PersonServiceBean(); 
	}
}