Spring mvc multiple file upload while working on WebSphere Liberty

I am running into strange problem while trying to upload multiple files using ajax. why we are using Ajax to upload multiple file ? Because user wants to review all the files which he/she is trying to upload to server. what mean by review is, user should be allowed to delete file before uploading to server.

What i tried so far?

JSP

<form id="form1" method="post" action="uploadMultipleFiles" enctype="multipart/form-data">
  <!-- File input -->    
  <input name="file" id="files" type="file"  multiple="multiple"/><br/>
  <button value="Submit" onclick="uploadFiles()" >Upload</button><i>upload</i>
</form>

JS

function uploadFiles(){
  var files = $("#files").prop("files");
  var oMyForm = new FormData();   
  oMyForm.append("file", files[0]);  //currently trying with only one file
      $.ajax({
            url:  'uploadMultipleFiles',
            data: oMyForm,
           // dataType: 'text',
            processData: false,
            contentType: false,
            type: 'POST',
            success: function(data){
                console.log(data)
            }
          });
}

Spring Controller (Version 3.0.0 release)

@RequestMapping(value = "/uploadMultipleFiles", method = RequestMethod.POST)
    public @ResponseBody String uploadMultipleFilesHandler(HttpServletRequest request, HttpServletResponse response)  {
  MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request;
  System.out.println(multipartRequest);   
}

I have not included entire code of controller but i believe it should be sufficient for any pointer which you can provide.

Spring bean configuartion

<bean id="multipartResolver"
        class="org.springframework.web.multipart.commons.CommonsMultipartResolver">

        <property name="maxUploadSize" value="900000" />

</bean>

Exception

java.lang.ClassCastException: com.ibm.ws.webcontainer31.srt.SRTServletRequest31 cannot be cast to org.springframework.web.multipart.MultipartHttpServletRequest

Kindly help me figure out what i could do to resolve this exception and please note same code is working file in tomcat however WebSphere Liberty profile seems to have some issue.

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