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Spring在3.1版本后的bean获取方法的改变
xml配置不变,如下
<?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-2.0.xsd">
<bean id="test3" class="org.springframework.tests.sample.beans.TestBean" scope="prototype">
<property name="name"><value>custom</value></property>
<property name="age"><value>25</value></property>
</bean>
</beans>
3.0版之前
获取bean的方式是用 XmlBeanFactory
@Test
public void beanTest(){
Resource rs2 = new ClassPathResource("test.xml",AATest.class);
BeanFactory bf = new XmlBeanFactory(rs2);
TestBean tb2 = (TestBean)bf.getBean("test3");
assertEquals("custom",tb2.getName());
}
3.1版本之后,因为某些原因,XmlBeanFactory被抛弃了,如果再用的化,会显示
<style>p.p1 { margin: 0.0px 0.0px 0.0px 0.0px; font: 11.0px ".SF NS Text" }</style>The type XmlBeanFactory is deprecated
源码里的测试方法里获取bean的方法如下
@Test public void beanTest2(){ Resource rs = new ClassPathResource("test.xml",AATest.class);; DefaultListableBeanFactory grandParent = new DefaultListableBeanFactory(); new XmlBeanDefinitionReader(grandParent).loadBeanDefinitions(rs); TestBean tb = (TestBean) grandParent.getBean("test3"); assertEquals("custom",tb.getName()); }
至于被抛弃的原因,如下
/** * Convenience extension of {@link DefaultListableBeanFactory} that reads bean definitions * from an XML document. Delegates to {@link XmlBeanDefinitionReader} underneath; effectively * equivalent to using an XmlBeanDefinitionReader with a DefaultListableBeanFactory. * * <p>The structure, element and attribute names of the required XML document * are hard-coded in this class. (Of course a transform could be run if necessary * to produce this format). "beans" doesn‘t need to be the root element of the XML * document: This class will parse all bean definition elements in the XML file. * * <p>This class registers each bean definition with the {@link DefaultListableBeanFactory} * superclass, and relies on the latter‘s implementation of the {@link BeanFactory} interface. * It supports singletons, prototypes, and references to either of these kinds of bean. * See {@code "spring-beans-3.x.xsd"} (or historically, {@code "spring-beans-2.0.dtd"}) for * details on options and configuration style. * * <p><b>For advanced needs, consider using a {@link DefaultListableBeanFactory} with * an {@link XmlBeanDefinitionReader}.</b> The latter allows for reading from multiple XML * resources and is highly configurable in its actual XML parsing behavior. * * @author Rod Johnson * @author Juergen Hoeller * @author Chris Beams * @since 15 April 2001 * @see org.springframework.beans.factory.support.DefaultListableBeanFactory * @see XmlBeanDefinitionReader * @deprecated as of Spring 3.1 in favor of {@link DefaultListableBeanFactory} and * {@link XmlBeanDefinitionReader} */ @Deprecated @SuppressWarnings({"serial", "all"}) public class XmlBeanFactory extends DefaultListableBeanFactory { //code... }
Spring在3.1版本后的bean获取方法的改变
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