java - Can't delete file after displaying it in html object using Spring MVC -

plop,

i trying delete file not stored in spring project.

i had mapped ressource folder :

<mvc:resources mapping="/rootfolder/**" location="file:c:/users/mypc/dev/rootfolder/" /> 

when try delete file never display work fine. problem showing when try delete file displayed once in web app.

even when try delete manually in file system message:

this action can not performed because file open in java (tm) platform se binary

home.jsp

    <c:when test="${fileextension == 'application/vnd.ms-excel'}">         <object data="rootfolder/<sec:authentication property="principal.username" />/${filename}"             type="${fileextension}" width="100%" style="height:50em">         </object>     </c:when>     <c:when test="${fileextension == 'application/pdf'}">         <object data="rootfolder/<sec:authentication property="principal.username" />/${filename}"              type="${fileextension}" width="100%" style="height:50em">          </object>     </c:when>     <c:when test="${(fileextension == 'image/png') ||  (fileextension == 'image/jpg')}">         <img src="rootfolder/<sec:authentication property="principal.username" />/${filename}" width="100%" style="height:50em"/>     </c:when> 

...

<form name="deletefileform" action="<c:url value="/deletefile"/>" method="post">     <button name="deletefile" type="submit" class="btn btn-danger">         <input id="deletefilename" name="deletefilename" class="hidden" type="text" value="${fileslist}"/>             <span class="glyphicon glyphicon-remove" aria-hidden="true"></span>     </button> </form> 

deletecontroller.java:

authentication      auth = securitycontextholder.getcontext().getauthentication(); string              name = auth.getname(); user                user = service.getusersfromlogins(name); string              filename = request.getparameter("deletefilename"); file                folder;  file file = new file(user.getusr_folderpath()+"/"+filename);  if(file.delete()) {     redir.addflashattribute("deletesucced", message.getmessage("billing.message.success.delete",          new string[]{file.getname()}, locale.getdefault())); } else {     redir.addflashattribute("deletefailed", message.getmessage("billing.message.error.delete",          new string[]{file.getname()}, locale.getdefault())); } 

downloadfilecontroller:

authentication      auth = securitycontextholder.getcontext().getauthentication();         string              name = auth.getname();         user                user = service.getusersfromlogins(name);         string              filename = request.getparameter("dlfilename");         inputstream         inputstream = null;         try          {             string filepathtobeserved = user.getusr_folderpath()+"/"+request.getparameter("dlfilename");             file filetodownload = new file(filepathtobeserved);             inputstream = new autocloseinputstream(new fileinputstream(filetodownload));             response.setcontenttype("application/force-download");             response.setheader("content-disposition", "attachment; filename="+filename);              ioutils.copy(inputstream, response.getoutputstream());             response.flushbuffer();             inputstream.close();         }          catch (exception e)         {             system.out.println("request not completed @ moment. please try again.");             e.printstacktrace();         }         { ioutils.closequietly(inputstream); } 

initialisation of fileextension:

if(user.getusr_folderpath() != null)             {                 folder = new file(user.getusr_folderpath());                 foldermanager.listfilesforfolder(folder);                 redir.addflashattribute("fileextension", filemanager.getfiletype(foldermanager.getfiles().get(0)));             } 

foldermanager:

private arraylist<string> files = new arraylist<string>();  public void listfilesforfolder(final file folder)  {     (final file fileentry : folder.listfiles())      {         if (fileentry.isdirectory())             listfilesforfolder(fileentry);         else             files.add(fileentry.getname());     } }  public list<string> getfiles()  {     return files; } 

filemanager.getfiletype:

public string getfiletype(string filename) {     string  fileextension = filename.substring(filename.length()-3);     if (fileextension.tolowercase().equals("pdf"))         return("application/pdf");     else if (fileextension.tolowercase().equals("png"))         return("image/png");     else if(fileextension.tolowercase().equals("jpg"))         return("image/jpg");     else if (fileextension.tolowercase().equals("xls"))         return("application/vnd.ms-excel");     return null; } 

thanks :)