Okay, i get it!
By converting the Exchange-Body I get the HTTP_QUERY String. So i get the information which parameters are sent.
String exchangeBody = httpExchange.getIn().getBody(String.class); Result: property1=one&property2=two&property3=three&property4=fourNonetheless I think the parameter map should be in the HttpServletRequest after convertion! Isn't it a bug?
Best regards - Sebastian
