Code to upload multiple files simultaneously using JSP, Servlet .
Step 1 : Create a jsp page.
index.jsp
<%--
Document : index
Created on : 21 Sep, 2013, 5:58:32 PM
Author : snlkjha
--%>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>JSP Page</title>
</head>
<body>
<form action="UploadServlet" method="post" enctype="multipart/form-data">
<input type="file" id="file" name="file1" accept="image/*" multiple="muliple" required/><br>
<input type="submit"/>
<br><br> ${requestScope.message}
</form>
</body>
</html>
step 2:
a. Download cos-multipart.jar file
b. Extract this file -> cos-multipart
c. Right Click Libraries folder of your project ->Add JAR/Folder
d. Browse cos-multipart jar file
step 3 :
a. Create a Package in the source packages of project and give a name of your choice(Here Package name is MyPackage).
b. Right click the ur package->select servlet->Name it UploadServlet
c. Copy & Paste the same
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package MyPackage;
import java.io.File;
import javax.servlet.*;
import javax.servlet.http.*;
import com.oreilly.servlet.multipart.MultipartParser;
import com.oreilly.servlet.multipart.Part;
import com.oreilly.servlet.multipart.FilePart;
public class UploadServlet extends HttpServlet {
private String fileSavePath;
private static final String UPLOAD_DIRECTORY = "Upload";
public void init() {
fileSavePath = getServletContext().getRealPath("/") + File.separator + UPLOAD_DIRECTORY;/*save uploaded files to a 'Upload' directory in the web app*/
if (!(new File(fileSavePath)).exists()) {
(new File(fileSavePath)).mkdir(); // creates the directory if it does not exist
}
}
@Override
public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, java.io.IOException {
String resp = "";
int i = 1;
resp += "<br>Here is information about uploaded files.<br>";
try {
MultipartParser parser = new MultipartParser(request, 1024 * 1024 * 1024); /* file limit size of 1GB*/
Part _part;
while ((_part = parser.readNextPart()) != null) {
if (_part.isFile()) {
FilePart fPart = (FilePart) _part; // get some info about the file
String name = fPart.getFileName();
if (name != null) {
long fileSize = fPart.writeTo(new File(fileSavePath));
resp += i++ + ". " + fPart.getFilePath() + "[" + fileSize / 1024 + " KB]<br>";
} else {
resp = "<br>The user did not upload a file for this part.";
}
}
}// end while
} catch (java.io.IOException ioe) {
resp = ioe.getMessage();
}
request.setAttribute("message", resp);
getServletContext().getRequestDispatcher("/index.jsp").forward(request, response);
}
}
step 4: run the project :
Click browse and select multiple images using ctrl and press enter/click open.
Click Submit
Step 5 : Now goto the project directory, open project folder->build->web->Upload to see the uploaded files.
** Instruction based on Netbeans with apache tomcat server.
************************* Enjoy Post, Happy Coding *****************************
