将基于XML的Spring转换为基于Java的配置

@Beanpublic MarshallingHttpMessageConverter marshallingMessageConverter() {    return new MarshallingHttpMessageConverter(        jaxb2Marshaller(),        jaxb2Marshaller()    );}@Beanpublic Jaxb2Marshaller jaxb2Marshaller() {    Jaxb2Marshaller marshaller = new Jaxb2Marshaller();    marshaller.setClassesToBeBound(new Class[]{    twitter.model.Statuses.class    });    return marshaller;}