ansaurus

Question

Answer 1

A:

Okay I have figured it out. Attributes added to the HttpServletRequest (retrieved from context) ARE available in the page receiving the ForwardRedirect

IE context.getRequest().setAttribute("attr1", "request attribute 1"); return new ForwardResolution("/WEB-INF/pages/hello.jsp");

In hello.jsp ${attr1} is available... yay!

2010-10-14 18:03:14

This is not how you typicaly would do MVC in Stripes...

Kdeveloper 2010-10-14 23:30:17

Answer 2

+2 A:

A typical MVC design in Stripes would look like something like the code below.

The JPA entity is automaticaly loaded by a Stripes interceptor provided by Stripersist (but this can also easily implemented on your own if you wish). Thus in this example, requesting http://your.app/show-order-12.html will load a order with id 12 from the database and will show it on the page.

Controller (OrderAction.java):

@UrlBinding("/show-order-{order=}.html")
public class OrderAction implements ActionBean {
    private ActionBeanContext context;
    private Order order;

    public ActionBeanContext getContext() {
        return context;
    }

    public void setContext(ActionBeanContext context) {
        this.context = context;
    }

    public void setOrder(Order order) {
        this.order = order;
    }

    public String getOrder() {
        return order;
    }

    @DefaultHandler
    public Resolution view() {
        return new ForwardResolution(“/WEB-INF/jsp/order.jsp”);
    }
}

View (order.jsp):

<html><body>
    Order id: ${actionBean.order.id}<br/>
    Order name: ${actionBean.order.name)<br/>
    Order total: ${actionBean.order.total)<br/>
</body></html>

Model (Order.java):

@Entity
public class Order implements Serializable {
    @Id @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Integer id;

    private String name;
    private Integer total;

    public String getName() {
        return name;
    }

    public Integer getTotal() {
        return total;
    }   
}

BTW there is an really excellent short(!) book on Stripes that covers all these things:

Stripes: ...and Java Web Development Is Fun Again

Kdeveloper 2010-10-14 23:53:22

Great! Thanks for the explanation and perfect example. :)

2010-10-15 16:05:16

ansaurus

tags:

views:

answers:

Stripes MVC Model Data

related questions