Javascript Form Post with Jersey MultiFormData - Null Pointer Exception -


i'm trying post form data using javascript against jersey resource. here javascript:

            var form = document.getelementbyid('form');             var formdata = new formdata(form);              if (window.xmlhttprequest)               {// code ie7+, firefox, chrome, opera, safari               xmlhttp=new xmlhttprequest();               }             else               {// code ie6, ie5               xmlhttp=new activexobject("microsoft.xmlhttp");               }             xmlhttp.onreadystatechange=function()               {               if (xmlhttp.readystate==4 && xmlhttp.status==200)                 {                     document.getelementbyid("xmltextbox").innerhtml=xmlhttp.responsetext;                 }               }             xmlhttp.open("post", "postxml", true);             xmlhttp.setrequestheader('content-type', 'multipart/form-data');             xmlhttp.setrequestheader("content-length", formdata.length);             xmlhttp.setrequestheader("connection", "close");             xmlhttp.send(formdata);

the jersey resource this:

@path("/resource") public class myclass {  @post @consumes(mediatype.multipart_form_data) @produces(mediatype.text_xml) public string postxml(@formdataparam("param1") string param1,  @formdataparam("param2") string param2){  return "test";  }

the real version includes more params , full code, annotations same. produces following exception when running through tomcat:

java.lang.nullpointerexception     @ com.sun.jersey.multipart.impl.multipartreaderclientside.unquotemediatypeparameters(multipartreaderclientside.java:227)     @ com.sun.jersey.multipart.impl.multipartreaderclientside.readmultipart(multipartreaderclientside.java:154)     @ com.sun.jersey.multipart.impl.multipartreaderserverside.readmultipart(multipartreaderserverside.java:80)     @ com.sun.jersey.multipart.impl.multipartreaderclientside.readfrom(multipartreaderclientside.java:144)     @ com.sun.jersey.multipart.impl.multipartreaderclientside.readfrom(multipartreaderclientside.java:82)     @ com.sun.jersey.spi.container.containerrequest.getentity(containerrequest.java:488)     @ com.sun.jersey.spi.container.containerrequest.getentity(containerrequest.java:552)

from looking @ source produced exception looks param isn't coming through:

224     (final string parametername : parameters) { 225         string parametervalue = mediatype.getparameters().get(parametername); 226 227         if (parametervalue.startswith("\"")) { 228             parametervalue = parametervalue.substring(1, parametervalue.length() - 1); 229             unquotedparams.put(parametername, parametervalue); 230         } 231     }

i;ve used firebug put trace on , name / values coming through differently when using javascript compared straight html post. in trace html post content type returned in upload stream:

request headers upload stream content-length  1756 content-type    multipart/form-data; boundary=---------------------------1523409566516443041527622966

but javascript seems standard post or something? ideas how replicate multiformdata post in javascript??

any ideas looks i'm passing things through ok? i've tried using normal html form post , works fine, must related javascript.

remove setrequestheader

var form = document.getelementbyid('form'); var formdata = new formdata(form);  var xmlhttp=new xmlhttprequest();   } xmlhttp.onreadystatechange=function()   {   if (xmlhttp.readystate==4 && xmlhttp.status==200)     {         document.getelementbyid("xmltextbox").innerhtml=xmlhttp.responsetext;     }   } xmlhttp.open("post", "postxml", true); xmlhttp.send(formdata);

http://jsfiddle.net/8nwb7/ working
http://jsfiddle.net/8nwb7/1/ not working


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