MCQs Test!! VB Basic Test !! Essentials of VB !! Creating User Services !! function !! Anatomy !! GK March-2019 !! DATA TYPES IN JAVA !! Classes ,Constructor ,Methods,Inheritance !! Ecology-I !! Biology 2019 !! Gk april 2019 !! Biology (living world) !! Plant anatomy !! CELL STRUCTURES AND FUNCTION !! General biology !! Human physiology !! Data structure !! Ecology-II !! GK TEST !! Reproduction in plants !! Human reproduction !! The ABC of C !! Operating system set1 !! Operating system set2 !! Gk and current affairs !! Animal kingdom !! Number system !! Animal kingdom-II !! Gk TEST-III !! Number series !! Microorganisms !! Interview question in c !! Time and Work !! Percentage !! General history !! Average !! Cells !! Locomotion and Movement !! paging !! Bacteriology !! Page replacement policy !! Secondary memory and Disk scheduling !! Introduction of Nervous System and neurons !! Plant harmones !! Transport and Mineral Nutrition in Plants !! Neurotransmitters !! Modern Indian History !! Photosynthesis in Plants !! Modern Indian History-II !! Plant respiration !! Environment & Biodiversity !! Environment & Biodiversity - II !! Algae, Bryophytes, Pteridophytes !! Area !! Cricket !! Days of the Year (India and the World) !! Plant Pathology - I !! Indian Transport System !! Plant Pathology - II !! Aptitude !! Biology !! Botany !! C language !! Computer Science !! Core Java !! Gate !! GK !! Mysql !! Operating system !! Physics !! VB-Visual Basic !! Zoology

Java Servlet Programing Laungage

Java Servlet Projects

Servlet Project 3

Create an application for upload (save) multiple file in hard disk
Previous Home Next

In this servlet program, multiple file can be upload/save into destination folder or server.Two important jar (easily found on http://www.apache.org ) must be added into library folder of program. These jar provide very important classes for performingupload/ save file action on server/ hard drive.

 

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0" 
 xmlns="http://java.sun.com/xml/ns/javaee"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
 http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
<servlet>
 <servlet-name>multiFileUploadServlet</servlet-name>
 <servlet-class>r4r.servlet.multiFileUploadServlet</servlet-class>
</servlet>
<servlet-mapping>
 <servlet-name>multiFileUploadServlet</servlet-name>
 <url-pattern>/multiFileUploadServlet</url-pattern>
</servlet-mapping>
<session-config>
 <session-timeout>
  30
 </session-timeout>
</session-config>
</web-app>

Index.jsp

<%-- 
Document   : index.jsp
--%>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
 <head>
  <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
  <title>r4r.co.in-servlet</title>
 </head>
 <body>
  <form>
  <h1>Access Servlet by servlet's Name!</h1>
  <a href="multiFileUploadServlet">multiFileUploadServlet</a>
  </form>
 </body>
</html>

Servlet Program

/*
 * Save as a multiFileUploadServlet.java
 */
package r4r.servlet;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.util.Iterator;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileUploadException;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import org.apache.commons.io.FilenameUtils;
import org.apache.commons.io.IOUtils;

/**
 *
 * @author R4R
 */
public class multiFileUploadServlet extends HttpServlet {

private static final String FILE_PATH = "c:/Temp";

protected void processRequest
	(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
try {
/* TODO output your page here */
out.println("<html>");
out.println("<head>");
out.println("<title>" + getServletInfo() + "</title>");
out.println("</head>");
out.println("<body>");
out.println("<h1>Servlet uploadFileServlet at " 
	+ request.getContextPath() + "</h1>");
out.println("<form name=\"form\" action=\"multiFileUploadServlet\
              " method=\"POST\" enctype=\"multipart/form-data\">");
out.println("<BR> Select File_1: <input type=\"file\
               " name=\"myFile_1\" value=\"\" size=\"30\" />");
out.println("<BR> Select File_2: <input type=\"file\
    " name=\"myFile_2\" value=\"\" size=\"30\" />");
out.println("<BR> Select File_3: <input type=\
        "file\" name=\"myFile_3\" value=\"\" size=\"30\" />");
out.println("<BR> Select File_4: <input type=\"file\"
name=\"myFile_4\" value=\"\" size=\"30\" />");
out.println("<BR> Select File_5: <input type=\
        "file\" name=\"myFile_5\" value=\"\" size=\"30\" />");
out.println("<BR><input type=\"submit\" value=\"Processing Image\" />");
out.println("<input type=\"reset\" value=\" Reset \" />");
out.println("</form>");
out.println("</body>");
out.println("</html>");
} finally {
out.close();
}
}

@Override
protected void doGet
 (HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}

@Override
protected void doPost
 (HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
// Check that we have a file upload request
boolean isMultipart = ServletFileUpload.isMultipartContent(request);
if (isMultipart) {
// Create a factory for disk-based file items
DiskFileItemFactory factory = new DiskFileItemFactory();
// Create a new file upload handler
ServletFileUpload fileUpload = new ServletFileUpload(factory);
fileUpload.setSizeMax(-1); // set max size
try {
// Parse the request
List items = fileUpload.parseRequest(request);
// Iterate upcoming request
Iterator iterator = items.iterator();
while (iterator.hasNext()) {
// Store every request into FileItem 
FileItem fileItem = (FileItem) iterator.next();
if (!fileItem.isFormField()) {
// Get File name with file extension
String prefix = FilenameUtils.getBaseName(fileItem.getName());
String suffix = FilenameUtils.getExtension(fileItem.getName());
// Create a file into given destination
File file = File.createTempFile
	(prefix + "_", "." + suffix, new File(FILE_PATH));
// writing data to a File
OutputStream os = new FileOutputStream(file);
// Copy bytes from an InputStream to an OutputStream.
IOUtils.copy(fileItem.getInputStream(), os);
String filename = file.getName();
out.println("File '" + "<b>" + filename + "</b>" 
	 + "' SuccessFully write in hardDisk on Path : " 
+ "<b>" + FILE_PATH + "</b><BR>");
// Close all resource
file.deleteOnExit();
os.close();
} else {
out.println("File Can't Upload : " + HttpServletResponse.SC_BAD_REQUEST);
}
}
} catch (FileUploadException ex) {
Logger.getLogger(uploadFileServlet.class.getName())
	 .log(Level.SEVERE, "A FileUploadException generate", ex);
} finally {
out.close(); //close text-output stream
}
}
}

@Override
public String getServletInfo() {
return "r4r.co.in-multiFileUploadServlet";
}
}
Output of Program
Previous Home Next