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靜態(tài)工廠(chǎng)注入

xml version="1.0" encoding="UTF-8"?>DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN""http://www.springframework.org/dtd/spring-beans.dtd"><beans>    <bean name="userManager"       class="research.spring.beanfactory.ch2.UserManager">       <lookup-method name="getUserDao" bean="userDao" />    bean>    <bean name="userDao" class="research.spring.beanfactory.ch2.UserDao"
 factory-method="getInstance" / >beans>

package research.spring.beanfactory.ch2;public class UserDao {public static UserDao getInstance() {return new UserDao("static factory method");}private String name = "";public UserDao(String name) {this.name = name;}public void create() {System.out.println("create user from - " + name);}}

package research.spring.beanfactory.ch2;
import org.springframework.beans.factory.xml.XmlBeanFactory;import org.springframework.core.io.ClassPathResource;public class Test {public static void main(String[] args) {XmlBeanFactory factory=new XmlBeanFactory(new ClassPathResource(
"research/spring/beanfactory/ch2/context.xml"));UserManager manager=(UserManager) factory.getBean("userManager");manager.createUser();}}

create user from - static factory method

package research.spring.beanfactory.ch2;import org.springframework.beans.factory.xml.XmlBeanFactory;import org.springframework.core.io.ClassPathResource;public class Test {public static void main(String[] args) {XmlBeanFactory factory=new XmlBeanFactory(new ClassPathResource(
"research/spring/beanfactory/ch2/context.xml"));UserManager manager=(UserManager) factory.getBean("userManager");manager.createUser();}}

實(shí)例工廠(chǎng)注入

package research.spring.beanfactory.ch2;public class UserDaoFactory{public UserDao getUserDao(){return new UserDao("UserDaoFactory");}}

xml version="1.0" encoding="UTF-8"?>DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN""http://www.springframework.org/dtd/spring-beans.dtd"><beans>    <bean name="userManager"       class="research.spring.beanfactory.ch2.UserManager">       <lookup-method name="getUserDao" bean="userDao" />    bean>    <bean name="userDao" class="research.spring.beanfactory.ch2.UserDao"
 factory-bean="userDaoFactory" factory-method="getUserDao" >    bean>    <bean name="userDaoFactory" class="research.spring.beanfactory.ch2.UserDaoFactory">bean>beans>

• factory-bean定義了工廠(chǎng)Bean
• factory-method定義了工廠(chǎng)方法