<bean id=“messageSource”  class=“org.springframework.context.support.ResourceBundleMessageSource”>

<property name=“basename” value=“messages”/>

<property name=“useCodeAsDefaultMessage” value=“true”/>

</bean>

</beans>

    public static void main(String[] args) {

    ClassPathXmlApplicationContext applicationContext = new ClassPathXmlApplicationContext(

    “applicationContext.xml”);//在web环境下也可通过如下如方式获取

    //WebApplicationContextUtils.getRequiredWebApplicationContext(servletContextEvent

    .getServletContext());

    DefaultListableBeanFactory beanFactory = (DefaultListableBeanFactory)

    applicationContext.getBeanFactory();

    GenericBeanDefinition messageSourceDefinition = new GenericBeanDefinition();

    //参数参考上面配置文件里面

    Map<String , String> original = new HashMap<String, String>();

    original.put(“basenames”, “messages”);

    original.put(“useCodeAsDefaultMessage”, “true”);

    messageSourceDefinition.setBeanClass(ResourceBundleMessageSource.class);

    messageSourceDefinition.setPropertyValues(new MutablePropertyValues(original));

    //注册

    beanFactory.registerBeanDefinition(“ResourceBundleMessageSource”,

    messageSourceDefinition);

    //获取

    ResourceBundleMessageSource messageSource = (ResourceBundleMessageSource) applicationContext

    .getBean(“ResourceBundleMessageSource”);

    //测试

    System.out.println(messageSource.getMessage(“test”, null, null));

    }

}