Spring 框架中注入或替换方法实现

<bean id="author" class="net.deniro.spring4.bean.Author" scope="prototype"/>
<bean id="book" class="net.deniro.spring4.bean.Book"
   p:name="面纱">
</bean>

public class Book implements BeanFactoryAware {
 ...
@Override
public void setBeanFactory(BeanFactory beanFactory) throws BeansException {
  this.factory = beanFactory;
}
public Author getPrototypeAuthor() {
  return (Author) factory.getBean("author");
  }
}

ApplicationContext context;
@BeforeMethod
public void setUp() throws Exception {
  context = new ClassPathXmlApplicationContext("beans5-5.xml");
}
@Test
public void test(){
  Book book= (Book) context.getBean("book");
  System.out.println(book.getAuthor().hashCode());
  System.out.println(book.getAuthor().hashCode());
  System.out.println(book.getPrototypeAuthor().hashCode());
  System.out.println(book.getPrototypeAuthor().hashCode());

public interface BookInterface {
  Author getAuthor();
}

<!-- 方法注入-->
<bean id="author" class="net.deniro.spring4.bean.Author" scope="prototype"
   p:name="毛姆"
    />
<bean id="book2" class="net.deniro.spring4.bean.BookInterface">
  <lookup-method name="getAuthor" bean="author"/>
</bean>

BookInterface book= (BookInterface) context.getBean("book2");
Assert.assertEquals("毛姆",book.getAuthor().getName());
Assert.assertTrue(book.getAuthor().hashCode()!=book.getAuthor().hashCode());

/**
 * 书名
 */
private String name;
public String getName() {
  return name;
}

public class Book4 implements MethodReplacer {
  @Override
  public Object reimplement(Object obj, Method method, Object[] args) throws Throwable {
    return "活着";
  }
}

<bean id="book3" class="net.deniro.spring4.bean.Book"
   p:name="灿烂千阳">
  <replaced-method name="getName" replacer="book4"/>
</bean>
<bean id="book4" class="net.deniro.spring4.bean.Book4"/>

Book book= (Book) context.getBean("book3");
assertEquals("活着", book.getName());