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https://issues.apache.org/jira/browse/CXF-7071?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15544681#comment-15544681
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Neal Hu commented on CXF-7071:
------------------------------
Sergey,
The root cause is that the ways parsing the parameter from the input stream are
different between WebContainer and CXF. If we get parameter in ServletFilter
first, so the injected request will get the data from the cache(WebContainer
consumed input stream). If we get the parameter directly, the injected request
will get the data by CXF. The behavior is obviously different.
The property you mentioned will invoke req.getParameterNames() and pre read the
data via WebContainer and cache the data. It is an only work around, the root
cause may here:
JAXRSInInterceptor:
List<Object> params = JAXRSUtils.processParameters(ori, matchedValues,
message);->org.apache.cxf.jaxrs.utils.JAXRSUtils.processParameter(Class<?>,
Type, Annotation[], Parameter, MultivaluedMap<String, String>, Message,
OperationResourceInfo)
We may need put the data parsed from body into request.getParameterMap()
> 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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