Spring File upload and persisting object -

i have form has 2 submit buttons. save button save object database , @ same time save upload file local directory. while send button generate email automatically recipient.

what have far

    @requestmapping(value = "/staff/setter/addpage", method = requestmethod.post) public string processmodule(@requestparam("name") string name,         @requestparam("file") multipartfile file, @modelattribute("module")         module module, staff staff, httpservletrequest request, bindexception errors,       httpsession session) {                 if( request.getparameter("save") != null )               {      if(module != null){           try {               multipartfile filea = module.getfiledata();               inputstream inputstream = null;              outputstream outputstream = null;              if (filea.getsize() > 0) {              inputstream = filea.getinputstream();              outputstream = new fileoutputstream("c:\\test\\"              + filea.getoriginalfilename());              system.out.println("==========uploaded file                      name=========");              system.out.println(filea.getoriginalfilename());                       system.out.println("====================================");              int readbytes = 0;              byte[] buffer = new byte[8192];              while ((readbytes = inputstream.read(buffer, 0, 8192)) !=                 -1) {              outputstream.write(buffer, 0, readbytes);              }              outputstream.close();              inputstream.close();              session.setattribute("success", "file uploaded              successfully");              session.setattribute("uploadfile", "c:\\test\\"              + filea.getoriginalfilename());              }              } catch (exception e) {              e.printstacktrace();              }    //save specific processing      moduleservice.save(module);      }      return "redirect:/staff/setter/addpage";     }   else if( request.getparameter("send") != null )  {   //send specific processing.      simplemailmessage msg = new simplemailmessage(this.templatemessage);      //msg.setto(module.getcustomer().getemailaddress());      msg.setto(module.getchecker().getemail());      //msg.setto(staff.getchecker().getemail());       msg.settext(          "dear " + module.getchecker().getname()          //"dear " + staff.getchecker().getemail()              //+ module.getcustomer().getlastname()              + "a coursework has been submitted checking"              + module.getmodulecode()              +module.getmodulename());      try{          this.mailsender.send(msg);      }      catch(mailexception ex) {          // log , go on...          system.err.println(ex.getmessage());      }   } return "/staff/setter/view_submission"; } 

so far error

      http status 400 - request sent client syntactically incorrect. 

i appreciate help.

edit: jsp page

  <c:url var="processurl" value="/staff/setter/addpage" />  <form:form modelattribute="module" method="post" action="${processurl}" name="module"     enctype="multipart/form-data">     <form:hidden path="moduleid" />      <div class="admin"> <table>      <tr>          <td class="module">          </td>         <td>module code:</td>          <td>module name:</td>      </tr>     <tr>     <td>convenor:</td>     <td>checker:</td>  </tr> <tr>     <td>weights:</td> </tr>    </table>   </div>   <div class ="lecturer"> <h4>lecturer section</h4> <ul>   <form:label path="filename">document title:</form:label> <form:input path="filename" name="name"/><br/>  <form:label path="documentpath">coursework sample:</form:label> <form:input path="documentpath" type="file" name="file" id="file"/><br/>   <form:label path="livedate">live date:</form:label> <form:input path="livedate"/><br/>   <form:label path="submissiondate">submission date:</form:label>  <form:input path="submissiondate"/><br/>   <form:label path="filename">marked sample title:</form:label>   <form:input path="filename" id="file" name="name"/><br/>   <form:label path="markedsamplepath">marked sample:</form:label>  <form:input path="markedsamplepath" type="file" name="file"/><br/>   </ul>  </div>   </form:form> 

if avoid hassle of handling multipart forms , possibly give user nicer experience. example form data has error , user needs resubmit form fileupload lost.

i use fineuploader build uploadedfilequeue hidden inputs , uploads themself seperate requests.

explained here: preserving value <form:input type="file"> spring mvc