RestWorkflowInterceptor in struts2-rest-plugin is returning a status which 
kills browser sessions
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                 Key: WW-2358
                 URL: https://issues.apache.org/struts/browse/WW-2358
             Project: Struts 2
          Issue Type: Bug
          Components: Other
    Affects Versions: 2.1.1
         Environment: Struts 2.1.1-SNAPSHOT on Jetty 6.1.6
            Reporter: Sarat Pediredla


The RestWorkflowInterceptor in the struts2-rest-plugin is a cool addition but 
unfortunately returns SC_BAD_REQUEST on validation fail, which might work with 
testing frameworks but kills real browsers.

The response tested on Safari 3 and Firefox 2.0.0.11 just shows a blank screen. 

If I change the following line from,

HttpHeaders info = new DefaultHttpHeaders()
                    .disableCaching()
                    .renderResult(method)
                    .withStatus(SC_BAD_REQUEST);
                
to,

HttpHeaders info = new DefaultHttpHeaders()
                    .disableCaching()
                    .renderResult(method);

then it works great as the server returns the right result as of validation 
failure (editNew in this case)

I am not entirely sure what the solution to this would be; either using a 
status code that the browsers will respond to or maybe not have a status code 
at all (although this might not be strictly RESTful) given that errors are sent 
back in a Map.

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