Rod Johnson(Spring框架的作者)对Struts的评价

Struts 1.1 is the current de-facto standard for web MVC, but it is far from perfect. Its reliance on deriving from concrete framework classes like Action and ActionForm restricts implementation choices and ties web tier objects to the Servlet and Struts APIs. The fact that Struts cannot handle domain objects for forms leads to an unnecessary proliferation of form holder classes. Its view handling is JSP-centric and not
well suited for other view technologies.

The advantages of Struts are not in its design but in its broad acceptance, abundant documentation, and good tool support. However, we expect that these advantages will be eroded as other web frameworks grow in popularity: notably, WebWork2, Spring web MVC, and Tapestry.

事实上，Struts不能将领域对象作为FormBean使用，带来了很多额外的FormBean

        // in a struts action ...
	public ActionForward execute(
		ActionMapping mapping,
		ActionForm form,
		HttpServletRequest request,
		HttpServletResponse response);
		throws Exception 
	{
                /*
                   form's actual type is MyForm
                   MyForm extends ActionForm implements MyDomain
                */
                MyDomain domain = (MyDomain); form;
                MyService service;
                service.useDomainObject(domain);;

将FormBean作为领域对象使用

gigix 写道:

我不同意这种做法，我的领域对象要完全依赖于Struts的FormBean,坚决反对。

public interface MyDomain {
public class MyDomainImpl implements MyDomain {
public class MyFormBean extends FormBean implements MyDomain {
public interface MyBusinessService {
    public void useDomainObject(MyDomain domain);;

你还没想清楚呢。领域对象怎么会依赖Struts呢？只不过是FormBean实现了你的领域对象的接口，可以把界面上的数据传给你的service去使用，仅此而已。这里的关键是：领域对象也是一个接口，你自己在下面有一个基于POJO的实现，在web层上也可以有一个基于FormBean的实现。这有什么问题吗？

你还没想清楚呢。领域对象怎么会依赖Struts呢？只不过是FormBean实现了你的领域对象的接口，可以把界面上的数据传给你的service去使用，仅此而已。这里的关键是：领域对象也是一个接口，你自己在下面有一个基于POJO的实现，在web层上也可以有一个基于FormBean的实现。这有什么问题吗？

public interface MyDomain {
public class MyDomainImpl implements MyDomain {
public class MyFormBean extends FormBean implements MyDomain {
public interface MyBusinessService {
    public void useDomainObject(MyDomain domain);;

明白了吧？

领域对象也是一个接口，