java - adding text input to multipart/form-data makes it fail -
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- how upload files server using jsp/servlet? 12 answers
so want t simple form transfer text , image. now, can't both @ same time !
here simple form code:
<%@ page language="java" contenttype="text/html; charset=iso-8859-1" pageencoding="iso-8859-1"%> <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %> <!doctype html public "-//w3c//dtd html 4.01 transitional//en" "http://www.w3.org/tr/html4/loose.dtd"> <html> <head> <meta http-equiv="content-type" content="text/html; charset=iso-8859-1"> <title>file upload</title> </head> <body> <center> <h1>file upload</h1> <form action="uploadservlet" method="post" enctype="multipart/form-data"> <input type="text" name="captionbox" /> <input type="file" name="photo" /> <input type="submit" /> </form> </center> </body> </html> this code give me error:
java.io.ioexception: java.io.filenotfoundexception: c:\users\poste hp\workspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp3\wtpwebapps\maroc_events\uploadfiles (access denied) but if put away text input , let file input, works! , can't figure out why !
here servlet code:
@webservlet("/uploadservlet") @multipartconfig public class uploadservlet extends httpservlet{ /** * name of directory uploaded files saved, relative * web application directory. */ private static final string save_dir = "uploadfiles"; /** * handles file upload */ protected void dopost(httpservletrequest request, httpservletresponse response) throws servletexception, ioexception { eventutil.addimage(request); request.setattribute("message", "upload has been done successfully!"); getservletcontext().getrequestdispatcher("/message.jsp").forward( request, response); } }
and eventutil class:
package com.utils; import java.io.file; import java.io.ioexception; import javax.servlet.servletexception; import javax.servlet.http.httpservletrequest; import javax.servlet.http.part; public class eventutil { private static final string save_dir = "uploadfiles"; public static void addimage(httpservletrequest request) throws ioexception, servletexception{ string apppath = request.getservletcontext().getrealpath(""); // constructs path of directory save uploaded file string savepath = apppath + file.separator + save_dir; system.out.println(savepath); // creates save directory if not exists file filesavedir = new file(savepath); if (!filesavedir.exists()) { filesavedir.mkdir(); } (part part : request.getparts()) { string filename = extractfilename(part); part.write(savepath + file.separator + filename); } } private static string extractfilename(part part) { string contentdisp = part.getheader("content-disposition"); string[] items = contentdisp.split(";"); (string s : items) { if (s.trim().startswith("filename")) { return s.substring(s.indexof("=") + 2, s.length()-1); } } return ""; } } thanks !
edit: stacktrace:
java.io.filenotfoundexception: c:\users\poste hp\workspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp3\wtpwebapps\maroc_events\uploadfiles (accès refusé) java.io.fileoutputstream.open(native method) java.io.fileoutputstream.<init>(unknown source) java.io.fileoutputstream.<init>(unknown source) org.apache.tomcat.util.http.fileupload.disk.diskfileitem.write(diskfileitem.java:394) com.utils.eventutil.addimage(eventutil.java:28) com.servlets.uploadservlet.dopost(uploadservlet.java:54) javax.servlet.http.httpservlet.service(httpservlet.java:648) javax.servlet.http.httpservlet.service(httpservlet.java:729) org.apache.tomcat.websocket.server.wsfilter.dofilter(wsfilter.java:52)
the write() method throws error because ...\maroc_events\uploadfiles directory, , cannot write directory.
you can write file in directory, require filename. likely, filename blank.
not sure, believe getparts() return non-file parts, means returns part captionbox field. try printing part.getname() check.
since expect 1 file anyway, use request.getpart("photo") instead of looping.
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