J Das

Hello ,can someone help me with the code for pagination of blob type data (images) to be shown in a jsp page . The thing i need to do is like YOUTBE does , when we search a video in youtube , we get results in thumbail image formats in paginated form. So, i hope someone will help me in this. Thank you in advance. I am using mysql database.

Hi all , i am working to generate thumbnail images from a video. I am able to do it but i need only one thumbnail image from a video , but what i get is more than one images at different times of the video. I have used the following code to generate the thumbnails . Please suggest me what should i modify in the following code to get only one thumbnail from the middle portion of the video . The code i used is as follows ( I have used Xuggler ):

/* * To change this template, choose Tools | Templates * and open the template in the editor. */ package xug; /** * * @author JD */ import java.awt.image.BufferedImage; import java.io.File; import java.io.IOException; import javax.imageio.ImageIO; import com.xuggle.mediatool.IMediaReader; import com.xuggle.mediatool.MediaListenerAdapter; import com.xuggle.mediatool.ToolFactory; import com.xuggle.mediatool.event.IVideoPictureEvent; import com.xuggle.xuggler.Global; public class Main { public static final double SECONDS_BETWEEN_FRAMES = 10; private static final String inputFilename = "D:\\k\\Knock On Wood Lesson.flv"; private static final String outputFilePrefix = "D:\\pix\\"; // The video stream index, used to ensure we display frames from one and // only one video stream from the media container. private static int mVideoStreamIndex = -1; // Time of last frame write private static long mLastPtsWrite = Global.NO_PTS; public static final long MICRO_SECONDS_BETWEEN_FRAMES = (long) (Global.DEFAULT_PTS_PER_SECOND * SECONDS_BETWEEN_FRAMES); public static void main(String[] args) { IMediaReader mediaReader = ToolFactory.makeReader(inputFilename); // stipulate that we want BufferedImages created in BGR 24bit color space mediaReader.setBufferedImageTypeToGenerate(BufferedImage.TYPE_3BYTE_BGR); mediaReader.addListener(new ImageSnapListener()); // read out the contents of the media file and // dispatch events to the attached listener while (mediaReader.readPacket() == null); } private static class ImageSnapListener extends MediaListenerAdapter { public void onVideoPicture(IVideoPictureEvent event) { if (event.getStreamIndex() != mVideoStreamIndex) { // if the selected video stream id is not yet set, go ahead an // select this lucky video stream if (mVideoStreamIndex == -1) { mVideoStreamIndex = event.getStreamIndex(); } // no need to show frames from this video stream else { return; } } // if uninitialized, back date mLastPtsWrite to get the very first frame if (mLastPtsWrite == Global.NO_PTS) { mLastPtsWrite = event.getTimeStamp() - MICRO_SECONDS_BETWEEN_FRAMES; } // if it's time to write the next frame if (event.getTimeStamp() - mLastPtsWrite >= MICRO_SECONDS_BETWEEN_FRAMES) { String outputFilename = dumpImageToFile(event.getImage()); // indicate file written double seconds = ((double) event.getTimeStamp()) / Global.DEFAULT_PTS_PER_SECOND; System.out.printf( "at elapsed time of %6.3f seconds wrote: %s\n", seconds, outputFilename); // update last write time mLastPtsWrite += MICRO_SECONDS_BETWEEN_FRAMES; } } private String dumpImageToFile(BufferedImage image) { try { String outputFilename = outputFilePrefix + System.currentTimeMillis() + ".png"; ImageIO.write(image, "png", new File(outputFilename)); return outputFilename; } catch (IOException e) { e.printStackTrace(); return null; } } } }

Hello everyone , I am developing a video sharing website , i have to achieve something like this.. an user uploads a video and a thumbnail image of that video would be generated. I am doing this on Netbeans 6.9.1 , using Tomcat and also have studied some Xuggler since a few days and so tried of using Xuggler. But my question is where should i install Xuggler ?? Inside Tomcat ??
I have installed Xuggler in 'lib' folder of my Tomcat. I have added the following environment variables---->>

CLASSPATH = .;.;C:\Program Files (x86)\Apache Software Foundation\Apache Tomcat 6.0.26\lib\share\java\jars\commons-cli.jar;C:\Program Files (x86)\Apache Software Foundation\Apache Tomcat 6.0.26\lib\share\java\jars\logback-classic.jar;C:\Program Files (x86)\Apache Software Foundation\Apache Tomcat 6.0.26\lib\share\java\jars\logback-core.jar;C:\Program Files (x86)\Apache Software Foundation\Apache Tomcat 6.0.26\lib\share\java\jars\slf4j-api.jar;C:\Program Files (x86)\Apache Software Foundation\Apache Tomcat 6.0.26\lib\share\java\jars\xuggle-xuggler.jar;C:\Program Files (x86)\Apache Software Foundation\Apache Tomcat 6.0.26\lib\share\java\jars\xuggle-xuggler-test.jar;

XUGGLE_HOME = C:\Program Files (x86)\Apache Software Foundation\Apache Tomcat 6.0.26\lib

Path = C:\Program Files (x86)\Apache Software Foundation\Apache Tomcat 6.0.26\lib\bin;

and I have included the 6 jar files of Xuggler which remains in lib>share>java under my Projects Libraries...

what i have done is the following..

index.jsp ( user uploads a video file from this page )

<%-- Document : guest Created on : 2 Sep, 2012, 12:03:53 PM Author : JD --%> <%@page contentType="text/html" pageEncoding="UTF-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <script type="text/javascript"> function validate(){ document.getElementById("mybutton").style.visibility="visible"; document.getElementById("file_browse").style.visibility="hidden"; } </script> <title>ADMIN PAGE</title> <style type="text/css"> #Text1 { width: 303px; height: 28px; margin-top: 0px; } #Button1 { width: 84px; margin-bottom: 4px; height: 27px; } #Button2 { width: 100px; height: 35px; } #Button3 { width: 100px; height: 35px; } .style1 { font-size: xx-large; } .style2 { color: #CC0000; word-spacing: inherit; } #Button4 { width: 113px; height: 32px; } #Button5 { width: 114px; height: 32px; } .newStyle1 { font-style: oblique; } .style3 { font-style: oblique; color: #FF0000; font-size: xx-large; } </style> </head> <body bgcolor="#E7EEE7"> <form id="form1" runat="server"> <%-- <font size="3pt" color="blue"> ADMIN'S PAGE </font> --%> <div style="border-style: groove; border-width: thin;height: 77px; width: 999px; margin-right: 1px; margin-top: 0px">   <span class="style1"></span> <span class="style3">YouTUBE</span></span><span class="style2">  </span>         <input id="Text1" type="text" /><input id="Button1" type="button" value="Search" />                            <input id="Button2" type="button" value="Admin" />      <input id="Button3" type="button" value="Logout" /></div> </form> <div style="border-style: groove; border-width: thin;width: 155px; height: 906px; margin-top:0px;"> </div> <div style="border-style: groove; border-width: thin;height: 908px; width: 250px; margin-left: 750px; margin-top: -907px; margin-bottom: 0px; margin-right: 0px;"> </div> <div style="border-style: groove; border-width: thin; width: 586px; height: 487px; margin-left: 159px; margin-top: -910px; margin-right: 7px;"> <!-- <img src="222435_141719395899395_126188717452463_256282_1022866_n.jpg" width="570" height="444"> --> <object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" width="600" height="344"> <!--[if !IE]>--> <object type="application/x-shockwave-flash" data="player.swf" width="580" height="444"> <!--<![endif]--> <param name="movie" value="Justin King Lesson 2.flv" /> <param name="wmode" value="transparent" /> <param name="bgcolor" value="#FFFFFF" /> <param name="quality" value="high" /> <param name="allowFullScreen" value="true" /> <param name="allowscriptaccess" value="always" /> <a href="http://www.adobe.com/go/getflash"> <img src="http://www.adobe.com/images/shared/download_buttons/get_flash_player.gif" alt="Get Adobe Flash player" /> </a> <param name="flashvars" value="vdo=Justin King Lesson 2.flv&autoplay=false" /> <!--[if !IE]>--> </object> <!--<![endif]--> </object> </div> <p>                                                                 <input id="Button4" type="button" value="Upload" />                <input id="Button5" type="button" value="Download" /></p> <%-- <object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" width="600" height="344"> <!--[if !IE]>--> <object type="application/x-shockwave-flash" data="Justin King Lesson 2.flv" width="600" height="444"> <!--<![endif]--> <param name="movie" value="Justin King Lesson 2.flv" /> <param name="wmode" value="transparent" /> <param name="bgcolor" value="#FFFFFF" /> <param name="quality" value="high" /> <param name="allowFullScreen" value="true" /> <param name="allowscriptaccess" value="always" /> <a href="http://www.adobe.com/go/getflash"> <img src="http://www.adobe.com/images/shared/download_buttons/get_flash_player.gif" alt="Get Adobe Flash player" /> </a> <param name="flashvars" value="vdo=Justin King Lesson 2.flv&autoplay=false" /> <!--[if !IE]>--> </object>--!> <!--<![endif]--> </object> --%> <form ENCTYPE="multipart/form-data" ACTION= "VT" METHOD="POST"> <table style="margin-top:30px;margin-left:160px;"> <tr> <td colspan="1"><p align="center"/></td> <td> </td> <td><div id='file_browse_wrapper'> <input type="file" name="F1" id="file_browse" onclick="validate()" /></div></td> </tr> </table> <table style="margin-top:-37px;margin-left:164px;"> <div id="mybutton_wrapper"> <tr><td><p align="right"><input TYPE="submit" VALUE="" id="mybutton" style="visibility:hidden"/></p></td></tr> </div> <tr><td colspan="2"></td></tr> </table> </form> </body> </html>

VT.java ( this is the servlet to which the user posts the file )

/* * To change this template, choose Tools | Templates * and open the template in the editor. */ package xugglerPack; import java.io.DataInputStream; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.io.PrintWriter; import java.math.BigInteger; import java.security.SecureRandom; import java.util.Random; import javax.servlet.RequestDispatcher; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpSession; import java.awt.Image; /** * * @author JD */ public class VT extends HttpServlet { /** * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods. * @param request servlet request * @param response servlet response * @throws ServletException if a servlet-specific error occurs * @throws IOException if an I/O error occurs */ protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { HttpSession session = request.getSession(true); String user = ""; //to get the content type information from JSP Request Header String contentType = request.getContentType(); if ((contentType != null) && (contentType.indexOf("multipart/form-data") >= 0)) { DataInputStream in = new DataInputStream(request.getInputStream()); int formDataLength = request.getContentLength(); byte dataBytes[] = new byte[formDataLength]; int byteRead = 0; int totalBytesRead = 0; while (totalBytesRead < formDataLength) { byteRead = in.read(dataBytes, totalBytesRead, formDataLength); totalBytesRead += byteRead; } String file = new String(dataBytes); // out.println(file); String saveFile = file.substring(file.indexOf("filename=\"") + 10); saveFile = saveFile.substring(0, saveFile.indexOf("\n")); saveFile = saveFile.substring(saveFile.lastIndexOf("\\") + 1, saveFile.indexOf("\"")); int lastIndex = contentType.lastIndexOf("="); String boundary = contentType.substring(lastIndex + 1, contentType.length()); int pos; pos = file.indexOf("filename=\""); pos = file.indexOf("\n", pos) + 1; pos = file.indexOf("\n", pos) + 1; pos = file.indexOf("\n", pos) + 1; int boundaryLocation = file.indexOf(boundary, pos) - 4; int startPos = ((file.substring(0, pos)).getBytes()).length; int endPos = ((file.substring(0, boundaryLocation)).getBytes()).length; String rootPath = "C:\\Users\\JD\\Documents\\NetBeansProjects\\xuggler\\web"; //SecureRandom srandom = new SecureRandom(); //String rand = new BigInteger(11, srandom).toString(5); //String mysavedFile = rand.concat(saveFile); session.setAttribute("myFolderpath", rootPath); FileOutputStream fileOut = new FileOutputStream(rootPath + "\\" + saveFile); //FileOutputStream fileOut = new FileOutputStream("c:\\"+saveFile); fileOut.write(dataBytes, startPos, (endPos - startPos)); fileOut.flush(); fileOut.close(); String myFile = "rootPath".concat("\\").concat(saveFile); Main main=new Main(); main.main(myFile); // String currentFile=rootPath.concat("\\").concat(mysavedFile); // session.setAttribute("mysavedFile", mysavedFile); // session.setAttribute("currentFile", currentFile); //RequestDispatcher rd = request.getRequestDispatcher("access.jsp"); //DBHandler d = new DBHandler(); //d.insertfile(saveFile, rootPath.concat("\\").concat(saveFile), "admin", "0"); RequestDispatcher rd = request.getRequestDispatcher("index2.jsp"); rd.forward(request, response); } } // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code."> /** * Handles the HTTP <code>GET</code> method. * @param request servlet request * @param response servlet response * @throws ServletException if a servlet-specific error occurs * @throws IOException if an I/O error occurs */ @Override protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { processRequest(request, response); } /** * Handles the HTTP <code>POST</code> method. * @param request servlet request * @param response servlet response * @throws ServletException if a servlet-specific error occurs * @throws IOException if an I/O error occurs */ @Override protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { processRequest(request, response); } /** * Returns a short description of the servlet. * @return a String containing servlet description */ @Override public String getServletInfo() { return "Short description"; }// </editor-fold> }

Main.java ( this is the java class where the creation of thumbnails must take place )

/* * To change this template, choose Tools | Templates * and open the template in the editor. */ package xugglerPack; import com.xuggle.mediatool.IMediaReader; import com.xuggle.mediatool.MediaListenerAdapter; import com.xuggle.mediatool.ToolFactory; import com.xuggle.mediatool.event.IVideoPictureEvent; import com.xuggle.xuggler.Global; import java.awt.image.BufferedImage; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import javax.imageio.ImageIO; /** * * @author JD */ public class Main { public static final double SECONDS_BETWEEN_FRAMES = 10; //public static final String inputFilename = ""; public static final String outputFilePrefix = "D:\\k\\"; // The video stream index, used to ensure we display frames from one and // only one video stream from the media container. public static int mVideoStreamIndex = -1; // Time of last frame write public static long mLastPtsWrite = Global.NO_PTS; public static final long MICRO_SECONDS_BETWEEN_FRAMES = (long) (Global.DEFAULT_PTS_PER_SECOND * SECONDS_BETWEEN_FRAMES); public void main(String inputFilename) { IMediaReader mediaReader = ToolFactory.makeReader(inputFilename); // stipulate that we want BufferedImages created in BGR 24bit color space mediaReader.setBufferedImageTypeToGenerate(BufferedImage.TYPE_3BYTE_BGR); mediaReader.addListener(new ImageSnapListener()); // read out the contents of the media file and // dispatch events to the attached listener while (mediaReader.readPacket() == null); } private static class ImageSnapListener extends MediaListenerAdapter { public void onVideoPicture(IVideoPictureEvent event) { if (event.getStreamIndex() != mVideoStreamIndex) { // if the selected video stream id is not yet set, go ahead an // select this lucky video stream if (mVideoStreamIndex == -1) { mVideoStreamIndex = event.getStreamIndex(); } // no need to show frames from this video stream else { return; } } // if uninitialized, back date mLastPtsWrite to get the very first frame if (mLastPtsWrite == Global.NO_PTS) { mLastPtsWrite = event.getTimeStamp() - MICRO_SECONDS_BETWEEN_FRAMES; } // if it's time to write the next frame if (event.getTimeStamp() - mLastPtsWrite >= MICRO_SECONDS_BETWEEN_FRAMES) { String outputFilename = dumpImageToFile(event.getImage()); // indicate file written double seconds = ((double) event.getTimeStamp()) / Global.DEFAULT_PTS_PER_SECOND; System.out.printf( "at elapsed time of %6.3f seconds wrote: %s\n", seconds, outputFilename); // update last write time mLastPtsWrite += MICRO_SECONDS_BETWEEN_FRAMES; } } private String dumpImageToFile(BufferedImage image) { try { String outputFilename = outputFilePrefix + System.currentTimeMillis() + ".png"; ImageIO.write(image, "png", new File(outputFilename)); return outputFilename; } catch (IOException e) { e.printStackTrace(); return null; } } } }


Now , when i run my application and upload a video file , it gets uploaded in my Project directory but the Thumbnail images are not created and it gives the following errors:

HTTP Status 500 - type Exception report message description The server encountered an internal error () that prevented it from fulfilling this request. exception javax.servlet.ServletException: Servlet execution threw an exception org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:393) root cause java.lang.NoClassDefFoundError: Could not initialize class com.xuggle.ferry.FerryJNI com.xuggle.ferry.RefCounted.acquire(RefCounted.java:179) com.xuggle.xuggler.IContainer.copyReference(IContainer.java:80) com.xuggle.mediatool.AMediaCoderMixin.<init>(AMediaCoderMixin.java:68) com.xuggle.mediatool.MediaReader.<init>(MediaReader.java:137) com.xuggle.mediatool.ToolFactory.makeReader(ToolFactory.java:77) xugglerPack.Main.main(Main.java:39) xugglerPack.VT.processRequest(VT.java:87) xugglerPack.VT.doPost(VT.java:136) javax.servlet.http.HttpServlet.service(HttpServlet.java:637) javax.servlet.http.HttpServlet.service(HttpServlet.java:717) org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:393) note The full stack trace of the root cause is available in the Apache Tomcat/6.0.26 logs. Apache Tomcat/6.0.26


what am i doing wrong ??? why are the images not generating ??? when i apply the same code for generating thumbnail images in a Java Application ( not Web Application ) , it creates the images , but when i do it a Web Application like above , I get errors..

Can anybody please help me with the steps to configure Xuggler in JSP projects . I am using Netbeans 6.9.1 , Apache Tomcat in Windows 7 OS.

Hello Ranchers , i am working on a video sharing site , so i need to generate thumbnails for each uploaded videos. I searched on Google and found something called Xuggle which says can help achieve this. So i need some Tutorials where I can find everything from the scratch.. I mean from installation of Xuggle to the importing of libraries ( if needed ) and the steps associated with generation of the thumbnail images from a video file. I have Googled for such tutorials but did not found anything that suits my need. If anyone can help me on this I would be really happy and thankful.

Ulf Dittmer wrote:Which sites have you visited? Which libraries have you chosen? Most of their respective sites should have enough documentation and example code to get you going. Just saying "I don't know how to proceed" isn't going to let us help you. Did what I said in my last post make any sense at all to you? If so, what *did* you understand?

Look Sir , I looked into the link you provided , and also searched for some other such similar sites; I have found FFMPEG to be some sort of a tool which would be able to solve my problem , but I have not found the process how should we start it , I mean to say that I am working on Netbeans , so do i have to import any libraries for FFMPEG or not ? If so how and where ?

Ulf Dittmer wrote:You will need to select one or more of those libraries depending on which file formats you plan to support. Not all of the libraries support all formats. Then you use those libraries to extract those images that you wish to show as preview (for starters, maybe always use the first image).

are there some kind of tutorials which shows how this process is done ?? I am really not getting any clue Sir..

Ulf Dittmer wrote:There are numerous libraries that can read video formats (see https://coderanch.com/how-to/java/OtherOpenSourceProjectsFaq for links to many of them). You can use those to extract images (maybe the first one) for display purposes.

Thank you so much for your kind reply , but i am not getting the idea how to use these libraries into my project. I mean when uploading the video file how will i bind the library to extract a thumbnail image of that video ? Please ignore my dumbness if so..

Hello everyone here in CODERANCH , would someone please explain me the concept behind making a thumbnail image for a video file ??? Like in video sharing sites , when we upload a video the video file appears as a thumbnail view , how can i achieve this ??? I am doing a video file sharing project where i have finished uploading the files , but when i show these files they should appear in thumbnail view , i am stuck with this part... I am not using any FRAMEWORK , so if anyone can suggest me anything i would be greatly thankful to you..

[UD: Content removed. Let's continue the discussion of your question in the topic you started: https://coderanch.com/t/592069/open-source/video-Thumbnails-video-sharing-site ]

Hello everyone out here.. can anyone post me an working example regarding CRUD appplication in Struts2 and Hibernate in Netbeans .. thanking you all in advance..

Bear Bibeault wrote:I removed the copyright notice from your servlet code because it was making the page too wide. Please take care when posting code to make sure that lines break in a reasonable width.

And, why are you putting a Sun copyright on your code?

Ooops ! Sorry, my mistake..

Hello Ranchers.. I need to validate my forms in my web application in realtime (using Ajax), I searched the web and found the following suitable solution for my query...

<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <style type="text/css"> .bp_invalid { color:white; background:red; } .bp_valid { color:green; } </style> <script type="text/javascript"> function AJAXInteraction(url, callback) { var req = init(); req.onreadystatechange = processRequest; function init() { if (window.XMLHttpRequest) { return new XMLHttpRequest(); } else if (window.ActiveXObject) { return new ActiveXObject("Microsoft.XMLHTTP"); } } function processRequest () { // readyState of 4 signifies request is complete if (req.readyState == 4) { // status of 200 signifies sucessful HTTP call if (req.status == 200) { if (callback) callback(req.responseXML); } } } this.doGet = function() { req.open("GET", url, true); req.send(null); } } function validateUserId() { var target = document.getElementById("userid"); var url = "validate?uid=" + encodeURIComponent(target.value); var target = document.getElementById("userid"); var ajax = new AJAXInteraction(url, validateCallback); ajax.doGet(); } function validateCallback(responseXML) { var msg = responseXML.getElementsByTagName("valid")[0].firstChild.nodeValue; if (msg == "false"){ var mdiv = document.getElementById("userIdMessage"); // set the style on the div to invalid mdiv.className = "bp_invalid"; mdiv.innerHTML = "Invalid User Id"; var submitBtn = document.getElementById("submit_btn"); submitBtn.disabled = true; } else { var mdiv = document.getElementById("userIdMessage"); // set the style on the div to valid mdiv.className = "bp_valid"; mdiv.innerHTML = "Valid User Id"; var submitBtn = document.getElementById("submit_btn"); submitBtn.disabled = false; } } </script> <title>Form Data Validation using AJAX</title> <meta name="collection" content="exclude"> </head> <body onload="disableSubmitBtn()"> <h1>Form Data Validation using AJAX</h1> <hr/> <p> This example shows how you can use Ajax to do server-side form data validation without a page reload. </p> <p> In the form below enter a user id. By default the user ids "greg", "duke" and "ねこ" are taken. If you attempt to enter a user id that has been taken an error message will be displayed next to the form field and the "Create Account" button will be disabled. After entering a valid user id and selecting the "Create Account" button that user id will be added to the list of user ids that are taken. </p> <form name="updateAccount" action="validate" method="post"> <input type="hidden" name="action" value="create"/> <table border="0" cellpadding="5" cellspacing="0"> <tr> <td><b>User Id:</b></td> <td> <input type="text" size="20" id="userid" name="uid" autocomplete="off" onkeyup="validateUserId()"> </td> <td> <div id="userIdMessage"></div> </td> </tr> <tr> <td align="right" colspan="2"> <input id="submit_btn" type="Submit" value="Create Account"> </td> <td></td> </tr> </table> </form> <script language="JavaScript" src="newjavascript.js"></script></body> </html>


The following is the servlet..

import java.io.*; import javax.servlet.*; import javax.servlet.http.*; import java.util.*; public class validate extends HttpServlet { private ServletContext context; private HashMap accounts = new HashMap(); public void init(ServletConfig config) throws ServletException { super.init(config); this.context = config.getServletContext(); accounts.put("greg", "account data"); accounts.put("duke", "account data"); // add a Japanese hiragana example "ne" "ko" (cat) accounts.put("\u306D\u3053", "account data"); } public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException { request.setCharacterEncoding("UTF-8"); String targetId = request.getParameter("uid"); System.out.println(targetId); if ((targetId != null) && !accounts.containsKey(targetId.trim())) { response.setContentType("text/xml"); response.setHeader("Cache-Control", "no-cache"); response.getWriter().write("<valid>true</valid>"); } else { response.setContentType("text/xml"); response.setHeader("Cache-Control", "no-cache"); response.getWriter().write("<valid>false</valid>"); } } public void doPost(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException { String targetId = request.getParameter("id"); if ((targetId != null) && !accounts.containsKey(targetId.trim())) { accounts.put(targetId.trim(), "account data"); request.setAttribute("targetId", targetId); context.getRequestDispatcher("/success.jsp").forward(request, response); } else { context.getRequestDispatcher("/error.jsp").forward(request, response); } } }

Actually i need the same thing to be done with database , but what the above example shows is with a Hashmap... anyone who can help me in this ?? I will be very grateful.. Thank You all in advance..

Bear Bibeault wrote:

J Das wrote:

Bear Bibeault wrote:You'll ned to write some code to resize the image to create the thumbnail.

That has nothing whatsoever to do with JSP, so this post has moved to a more appropriate location.

So where do i need to write those code ??

Code never goes in a JSP. Never. Ever.

Ever.

So while uploading the file ( say an image file )from the jsp page , when i pass it to a servlet , is that the servlet where that code will appear ?? Please ignore my dumbness if it is so..