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From "Sergey Beryozkin (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CXF-7071) HttpServletRequest.getParameter only get String from query not both posted form data
Date Wed, 05 Oct 2016 12:36:21 GMT

    [ https://issues.apache.org/jira/browse/CXF-7071?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15548574#comment-15548574
] 

Sergey Beryozkin commented on CXF-7071:
---------------------------------------

I'm not sure what you mean that the root cause is in the JAXRSUtils code. The only reason
you see no parameter values returned when you work directly against HttpServletRequest (unless
that property is set) is that CXF AbstractHttpDestination needs to set HTTP InputStream on
the current Message.

JAXRSUtils will not consult the consumed POST form input stream when resolving @QueryParam
- these can only come from HTTP URL query component.

But as I said, given that you do prefer working directly with HttpServletRequest, but also
because users keep asking about it quite regularly, I will consider overriding CXF HttpServletRequest
wrapper to ovverride parameter related methods (in fact 4 of them). I won't recommend users
doing it - as I said - it won't work for cases where the encoded values have to be made available
- and it is outside of JAX-RS API - but if it can help some users then I guess it might make
sense    

> HttpServletRequest.getParameter only get String from query not both posted form data
> ------------------------------------------------------------------------------------
>
>                 Key: CXF-7071
>                 URL: https://issues.apache.org/jira/browse/CXF-7071
>             Project: CXF
>          Issue Type: Bug
>          Components: JAX-RS
>    Affects Versions: 3.1.7
>            Reporter: Neal Hu
>             Fix For: 3.1.8
>
>
> The http request:
>  POST /dubbott-demo-provider/v1.0/users/beanparam HTTP/1.1
> HOST: localhost:8080
> accept: text/plain
> content-type: application/x-www-form-urlencoded
> content-length: 12
> pageIndex=99
> The resource method returns null:
> {code:java}
>     public String beanParam(@Context HttpServletRequest req, String ak) {
>         String pageIndex = req.getParameter("pageIndex")    
>         return pageIndex;
>     }
> {code}
> From the servlet 3.1 API doc:
> String javax.servlet.ServletRequest.getParameter(String name)
> Returns the value of a request parameter as a String, or null if the parameter does not
exist. Request parameters are extra information sent with the request. For HTTP servlets,
parameters are contained in the query string or posted form data.
> if we add below servlet filter:
> {code:java}
> 	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
throws IOException, ServletException {
> 	        System.out.println(request.getParameter("pageIndex") );
> 		chain.doFilter(request, response);
> 	}
> {code}
> The output is "99" the response is the same "99".
> As a conclusion the CXF HttpServletRequest doesn't comply the Servlet 3.1 API Spec.



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