jsf - p:upload file doesn't work with pdf extension neither of the rest of extension like png,docx,jpeg,gif? -

and cant' store file more 10mb primary problrm why doesn't except pdf file??? managedbean file upload function :-

public void fileuploadlistener(fileuploadevent e) throws ioexception, exception {      this.file = e.getfile();                     file ostream = new file("c:\\test.pdf");     courseresourcebean.update(item);     ostream.createnewfile();     long sss = file.getsize();     inputstream inputstream = file.getinputstream();     fileoutputstream outputstream = new fileoutputstream(ostream);     byte[] buffer = new byte[sss.bytevalue()];     int lenght;     while ((lenght = inputstream.read(buffer)) != -1) {         outputstream.write(buffer, 0, lenght);     }     outputstream.close();     facescontext.getcurrentinstance().addmessage(null, new facesmessage("file uploaded successfully" + file.getsize()));     string extension = file.getcontenttype();  } 

file download function :-

public void prepdownload(long id) throws exception {     file files = new file("c:\\test.pdf");     inputstream input = new fileinputstream(files);     externalcontext externalcontext = facescontext.getcurrentinstance().getexternalcontext();     setdownload(new defaultstreamedcontent(input, externalcontext.getmimetype(files.getname()), files.getname()));     system.out.println("prep = " + download.getname()); } 

and xhtml page upload :-

<p:outputlabel value="#{msg.coursename}, #{msg.inarabic}" style="text-align: right"/>         <p:fileupload value="#{courseresourcemb.file}" mode="advanced" sizelimit="200000000000"                        fileuploadlistener="#{courseresourcemb.fileuploadlistener}" update="msg11" >           </p:fileupload> 

downlad:-

<p:commandbutton id="downloadlink" value="download" actionlistener="#{courseresourcemb.prepdownload(item.id)}" ajax="false">                  <p:filedownload value="#{courseresourcemb.download}" />             </p:commandbutton>