Hare Shiva

I have created an applet and it doesnot access any client files or resources.So in my understanding i donot need to sign it.I am going to host that applet along with my website.My problem is that whenever browser runs that applet at start up it ask for permission.I want the applet to run without such permission.Its a simple applet.How can i achieve it.I have seen other applets that runs automatically in my browser.I want to achieve same like that.Please any suggestion.

I have a table in which there is an attribute called SDate where i am storing Date.Now i need to select all rows from that table where the difference of current date and SDate is greater than 1 day.Please help me and also i think this problem is better solved if i add timestamp value.

select * from TeleQuery where DateDiff("d",SDate,Date())>1

If i use above query then rows with SDate 10/1/2012 doesnot get selected even though the difference between SDate and current Date 10/2/2012 is more than 1 day.Why is it not working?I am using access.

Paul Clapham wrote:

Hare Shiva wrote:I dont know how to see exception when applet runs in web browser.

You'll see a "Java" icon in your taskbar (I'm correct in assuming you're using Windows, right?). Double-click that and look in the Java console, that's where System.out and System.err go, along with errors which you don't catch.

I'm not looking at your code because if something works in Setup A but not in Setup B then it's probably something to do with the configuration and not the code.

Yes it did give exception.


Java Plug-in 1.6.0_25
Using JRE version 1.6.0_25-b06 Java HotSpot(TM) Client VM
User home directory = C:\Users\Computer
----------------------------------------------------
c: clear console window
f: finalize objects on finalization queue
g: garbage collect
h: display this help message
l: dump classloader list
m: print memory usage
o: trigger logging
q: hide console
r: reload policy configuration
s: dump system and deployment properties
t: dump thread list
v: dump thread stack
x: clear classloader cache
0-5: set trace level to <n>
----------------------------------------------------


Check
Absolute path is C:\Users\Computer\Documents\31_free_buttons_psd_file_452.JPG
java.security.AccessControlException: access denied (java.io.FilePermission C:\Users\Computer\Documents\31_free_buttons_psd_file_452.JPG read)
at java.security.AccessControlContext.checkPermission(Unknown Source)
at java.security.AccessController.checkPermission(Unknown Source)
at java.lang.SecurityManager.checkPermission(Unknown Source)
at java.lang.SecurityManager.checkRead(Unknown Source)
at java.io.File.length(Unknown Source)
at sun.awt.shell.ShellFolder.length(Unknown Source)
at org.apache.http.entity.mime.content.FileBody.getContentLength(FileBody.java:114)
at org.apache.http.entity.mime.MultipartEntity.isRepeatable(MultipartEntity.java:138)
at org.apache.http.entity.mime.MultipartEntity.isChunked(MultipartEntity.java:146)
at org.apache.http.entity.HttpEntityWrapper.isChunked(HttpEntityWrapper.java:76)
at org.apache.http.protocol.RequestContent.process(RequestContent.java:106)
at org.apache.http.protocol.ImmutableHttpProcessor.process(ImmutableHttpProcessor.java:109)
at org.apache.http.protocol.HttpRequestExecutor.preProcess(HttpRequestExecutor.java:176)
at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:515)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:906)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:805)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:784)
at testing.Upload.executeMultiPartRequest(Upload.java:191)
at testing.Upload.UploadActionPerformed(Upload.java:221)
at testing.Upload.access$100(Upload.java:38)
at testing.Upload$2.actionPerformed(Upload.java:102)
at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)
at java.awt.Component.processMouseEvent(Unknown Source)
at javax.swing.JComponent.processMouseEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$000(Unknown Source)
at java.awt.EventQueue$1.run(Unknown Source)
at java.awt.EventQueue$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source)
at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue$2.run(Unknown Source)
at java.awt.EventQueue$2.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)


What should i do? I signed my applet by
1.goint to webstart
2.enable web start
3.self signed by generated key

there is another option for signing but i dont know know how to use it.

Paul Clapham wrote:

Hare Shiva wrote:I dont know how to see exception when applet runs in web browser.

You'll see a "Java" icon in your taskbar (I'm correct in assuming you're using Windows, right?). Double-click that and look in the Java console, that's where System.out and System.err go, along with errors which you don't catch.

I'm not looking at your code because if something works in Setup A but not in Setup B then it's probably something to do with the configuration and not the code.

Yes it did give exception.


Java Plug-in 1.6.0_25
Using JRE version 1.6.0_25-b06 Java HotSpot(TM) Client VM
User home directory = C:\Users\Computer
----------------------------------------------------
c: clear console window
f: finalize objects on finalization queue
g: garbage collect
h: display this help message
l: dump classloader list
m: print memory usage
o: trigger logging
q: hide console
r: reload policy configuration
s: dump system and deployment properties
t: dump thread list
v: dump thread stack
x: clear classloader cache
0-5: set trace level to <n>
----------------------------------------------------


Check
Absolute path is C:\Users\Computer\Documents\31_free_buttons_psd_file_452.JPG
java.security.AccessControlException: access denied (java.io.FilePermission C:\Users\Computer\Documents\31_free_buttons_psd_file_452.JPG read)
at java.security.AccessControlContext.checkPermission(Unknown Source)
at java.security.AccessController.checkPermission(Unknown Source)
at java.lang.SecurityManager.checkPermission(Unknown Source)
at java.lang.SecurityManager.checkRead(Unknown Source)
at java.io.File.length(Unknown Source)
at sun.awt.shell.ShellFolder.length(Unknown Source)
at org.apache.http.entity.mime.content.FileBody.getContentLength(FileBody.java:114)
at org.apache.http.entity.mime.MultipartEntity.isRepeatable(MultipartEntity.java:138)
at org.apache.http.entity.mime.MultipartEntity.isChunked(MultipartEntity.java:146)
at org.apache.http.entity.HttpEntityWrapper.isChunked(HttpEntityWrapper.java:76)
at org.apache.http.protocol.RequestContent.process(RequestContent.java:106)
at org.apache.http.protocol.ImmutableHttpProcessor.process(ImmutableHttpProcessor.java:109)
at org.apache.http.protocol.HttpRequestExecutor.preProcess(HttpRequestExecutor.java:176)
at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:515)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:906)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:805)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:784)
at testing.Upload.executeMultiPartRequest(Upload.java:191)
at testing.Upload.UploadActionPerformed(Upload.java:221)
at testing.Upload.access$100(Upload.java:38)
at testing.Upload$2.actionPerformed(Upload.java:102)
at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)
at java.awt.Component.processMouseEvent(Unknown Source)
at javax.swing.JComponent.processMouseEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$000(Unknown Source)
at java.awt.EventQueue$1.run(Unknown Source)
at java.awt.EventQueue$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source)
at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue$2.run(Unknown Source)
at java.awt.EventQueue$2.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)


What should i do? I signed my applet by
1.goint to webstart
2.enable web start
3.self signed by generated key

there is another option for signing but i dont know know how to use it.

Paul Clapham wrote:I suppose it might help if you stopped using the invalid URL "http://localhost:8080//test//Uploader" and corrected it to "http://localhost:8080/test/Uploader", but I suspect that isn't your problem.

However I don't know what your problem is. You didn't say whether any exceptions were being thrown -- so tell us that. And you said your servlet wasn't being run, but you didn't say whether the applet was even connecting to the servlet -- so tell us that. It's no use telling us what should have happened -- tell us what actually happened instead.

I get no exception when running from applet viewer.Applet that is in separate netbeans project can send file to servlet that is in another web project.But the same don't happen when running applet from web page.I dont think there is any problem with code because if there were any than it shouldnot have worked in applet viewer too,isnt it? And yes i corrected my url but still there is the same problem.I dont know how to see exception when applet runs in web browser.My applet shows up in browser and i can even select file but than nothing happens . The file is not sent to servlet and it shows no error too.How do i check what exception occur because netbeans shows none when applet is running in browser? I am exploring other possibilities of sending file through applet because i need it soon for my academic project.If you could look upon check this code please to find any error i would be very thankful.

i have following applet code that i found in internet and modified as required

package Upload; import com.sun.image.codec.jpeg.JPEGCodec; import com.sun.image.codec.jpeg.JPEGImageEncoder; import java.applet.Applet; import java.awt.image.BufferedImage; import java.io.ByteArrayInputStream; import java.io.ByteArrayOutputStream; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.net.HttpURLConnection; import java.net.URL; import java.net.URLConnection; import java.util.logging.Level; import java.util.logging.Logger; import javax.imageio.ImageIO; /** * * @author Computer */ public class appFinal extends Applet { /** * Initialization method that will be called after the applet is loaded * into the browser. */ @Override public void init() { File file = new File("C:\\Users\\Computer\\Desktop\\client\\screenlg18.jpg"); try { BufferedImage image = ImageIO.read(file); sendToServletOne(image); } catch (Exception ex) { ex.printStackTrace(); } } // TODO overwrite start(), stop() and destroy() methods public void sendToServletOne(BufferedImage bi) throws Exception{ try { System.out.println("Sending the image data"); String urlPath = "http://localhost:8080//test//Final"; URL url = new URL(urlPath); URLConnection conn = url.openConnection(); if (conn instanceof HttpURLConnection) { ((HttpURLConnection)conn).setRequestMethod("POST"); } else { throw new Exception("this connection is NOT an HttpUrlConnection connection"); } conn.setUseCaches(false); conn.setDefaultUseCaches (false); conn.setDoOutput(true); conn.setDoInput(true); conn.setRequestProperty ("Content-Type", "application/octet-stream"); conn.connect(); OutputStream out = conn.getOutputStream(); InputStream ins = conn.getInputStream(); ByteArrayOutputStream os = new ByteArrayOutputStream(); JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(os); encoder.encode(bi); byte[] outBuffer = os.toByteArray(); if(outBuffer != null) System.out.println("in send to Servlet "+outBuffer.length); InputStream in = new ByteArrayInputStream(outBuffer); int BUF_SIZE = 512; int bytesRead = 0; byte[] buffer = new byte[BUF_SIZE]; FileOutputStream fos = new FileOutputStream("C:\\Users\\Computer\\Desktop\\client\\screen123.jpg"); while ((bytesRead = in.read(buffer, 0, BUF_SIZE)) > -1) { fos.write(buffer, 0, bytesRead); out.write(buffer, 0, bytesRead); System.out.println("client while"); System.out.println("count "+bytesRead); } out.flush(); out.close(); }catch(Exception e) { e.printStackTrace(); System.out.println(e.getMessage()); } } }


and the servlet part

package servlet; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.io.OutputStream; import java.io.PrintWriter; 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; /** * * @author Computer */ package servlet; import java.io.ByteArrayInputStream; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.PrintWriter; import java.net.URLDecoder; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; /** * * @author Computer */ public class Final 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 { response.setContentType("text/html;charset=UTF-8"); // PrintWriter out = response.getWriter(); try { System.out.println("Here"); System.out.println("in Cam servlet do post"); System.out.println("getting the image from applet"); System.out.println("Request Content Type "+request.getContentType()); System.out.println("Request Content Type "+request.getContentLength()); //resp.setContentType(req.getContentType()); File filename = new File("C:\\Users\\Computer\\Desktop\\client\\screen.jpg"); FileOutputStream out = new FileOutputStream(filename); InputStream in = request.getInputStream(); byte[] buf = new byte[512]; int nread = 0, total_read = 0; while ((nread =in.read(buf))>-1) { System.out.println("Count"); total_read += nread; out.write(buf, 0, nread); } System.out.println("bytes read " + total_read); out.close(); in.close(); } finally { //out.close(); } } // <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> }


i receive 0 bytes in servlet.Anyone please help me.

Andrew Thompson wrote:Are you the same person that asked this question on SO?

Yes.If you have any suggestion then please help me.How can my applet connect to servlet.The applet works fine in applet viewer and send files to servlet.But cannot send file to servlet when used in browser.I printed test statements in servlet but neither of them shows so it means applet couldnot connect to that servlet.Should i do anything else.i using netbeans and i did following steps

1.Created a applet as separate project.
2.Build it and pasted in location of my jsp pages.
3.All jar files used by the applet have been written in archive.

What else should be done.Please help.

Paul Clapham wrote:

Hare Shiva wrote:in jsp portion i wrote this code
<applet code="testing.Upload" archive="apptesting.jar" width="400" height="400"> </applet>

i m using netbeans so i build that applet project and pasted it in my web page.Other applet project i did worked in the same way.Do you know any other method of sending image.If then please post codes.I m beginner in java and i really need to complete it soon.

And now we can all see that the "archive" attribute does not mention the jar which contains Apache HttpClient. So fix that. Make sure that the jar is in your web application, preferably in the same folder as the apptesting.jar, so that it can be downloaded to the client.

And no, we don't post code here. Read our FAQ entry DoYourOwnHomework which explains why we don't do that.

Thanks a lot for your help.Now my applet runs in the browser but it cannot connect to servlet as it did when running in applet viewer.My servlet is in Project test, in "servlet" package.So can i use servlet url as"http://localhost:8080//test//Uploader".Please be patient with me. I am new to java and i am a student.

Paul Clapham wrote:You do have to specify the applet's classpath (via the "archive" attribute of the <applet> tag, I think). Presumably you set up the classpath in Netbeans, now you have to do that for your HTML as well.

in jsp portion i wrote this code
<applet code="testing.Upload" archive="apptesting.jar" width="400" height="400"> </applet>

i m using netbeans so i build that applet project and pasted it in my web page.Other applet project i did worked in the same way.Do you know any other method of sending image.If then please post codes.I m beginner in java and i really need to complete it soon.

i am constructing an applet that upload multiple files and sends it to servlet for storage..Following is my applet code

/* * To change this template, choose Tools | Templates * and open the template in the editor. */ /* * Upload.java * * Created on Aug 1, 2012, 1:48:29 AM */ package testing; import java.io.BufferedReader; import java.io.File; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.UnsupportedEncodingException; import javax.swing.JFileChooser; import javax.swing.JOptionPane; import javax.swing.table.DefaultTableModel; import org.apache.http.HttpEntity; import org.apache.http.HttpResponse; import org.apache.http.client.ClientProtocolException; import org.apache.http.client.HttpClient; import org.apache.http.client.methods.HttpPost; import org.apache.http.client.methods.HttpRequestBase; import org.apache.http.entity.mime.MultipartEntity; import org.apache.http.entity.mime.content.FileBody; import org.apache.http.entity.mime.content.StringBody; import org.apache.http.impl.client.DefaultHttpClient; /** * * @author Computer */ public class Upload extends javax.swing.JApplet { /** Initializes the applet Upload **/ @Override public void init() { try { java.awt.EventQueue.invokeAndWait(new Runnable() { @Override public void run() { setSize(300,135); initComponents(); } }); } catch (Exception ex) { ex.printStackTrace(); } } /** This method is called from within the init() method to * initialize the form. * WARNING: Do NOT modify this code. The content of this method is * always regenerated by the Form Editor. */ @SuppressWarnings("unchecked") // <editor-fold defaultstate="collapsed" desc="Generated Code"> private void initComponents() { chooser = new javax.swing.JFileChooser(); jPanel1 = new javax.swing.JPanel(); jScrollPane1 = new javax.swing.JScrollPane(); table = new javax.swing.JTable(); Upload = new javax.swing.JButton(); jPanel1.setBackground(new java.awt.Color(255, 255, 255)); table.setModel(new javax.swing.table.DefaultTableModel( new Object [][] { }, new String [] { "Title 1" } )); jScrollPane1.setViewportView(table); javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1); jPanel1.setLayout(jPanel1Layout); jPanel1Layout.setHorizontalGroup( jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 300, javax.swing.GroupLayout.PREFERRED_SIZE) ); jPanel1Layout.setVerticalGroup( jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 90, javax.swing.GroupLayout.PREFERRED_SIZE) ); Upload.setText("Upload"); Upload.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { UploadActionPerformed(evt); } }); javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane()); getContentPane().setLayout(layout); layout.setHorizontalGroup( layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE) .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup() .addContainerGap() .addComponent(Upload)) ); layout.setVerticalGroup( layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(layout.createSequentialGroup() .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED) .addComponent(Upload) .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)) ); }// </editor-fold> private static String executeRequest(HttpRequestBase requestBase){ String responseString = "" ; InputStream responseStream = null ; HttpClient client = new DefaultHttpClient () ; try{ HttpResponse response = client.execute(requestBase) ; if (response != null){ HttpEntity responseEntity = response.getEntity() ; if (responseEntity != null){ responseStream = responseEntity.getContent() ; if (responseStream != null){ BufferedReader br = new BufferedReader (new InputStreamReader (responseStream)) ; String responseLine = br.readLine() ; String tempResponseString = "" ; while (responseLine != null){ tempResponseString = tempResponseString + responseLine + System.getProperty("line.separator") ; responseLine = br.readLine() ; } br.close() ; if (tempResponseString.length() > 0){ responseString = tempResponseString ; } } } } } catch (UnsupportedEncodingException e) { e.printStackTrace(); } //catch (ClientProtocolException e) { // e.printStackTrace(); //} catch (IllegalStateException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); }finally{ if (responseStream != null){ try { responseStream.close() ; } catch (IOException e) { e.printStackTrace(); } } } client.getConnectionManager().shutdown() ; return responseString ; } public void executeMultiPartRequest(String urlString, File file) { HttpClient client = new DefaultHttpClient(); HttpPost postRequest = new HttpPost (urlString) ; try{ MultipartEntity multiPartEntity = new MultipartEntity () ; FileBody fileBody = new FileBody(file, "application/octect-stream") ; multiPartEntity.addPart("attachment", fileBody) ; postRequest.setEntity(multiPartEntity) ; HttpResponse response = client.execute(postRequest); } catch (Exception ex){ ex.printStackTrace() ; } //return executeRequest (postRequest) ; } private void UploadActionPerformed(java.awt.event.ActionEvent evt) { DefaultTableModel model = (DefaultTableModel) table.getModel(); int value = chooser.showOpenDialog(this); chooser.setFileSelectionMode(JFileChooser.FILES_ONLY); if(value == JFileChooser.APPROVE_OPTION) { System.out.println("Check"); File file = chooser.getSelectedFile(); String name = file.getName().toLowerCase(); if(name.endsWith(".jpg")||name.endsWith(".bmp")||name.endsWith(".png")) { String showpathName = chooser.getSelectedFile().getName(); String absolutePathName = file.getAbsolutePath(); System.out.println("Absolute path is "+absolutePathName); /***Send For Uploading*****/ executeMultiPartRequest("http://localhost:8080//test//Uploader", file) ; // System.out.println("Response : "+response); /***************************/ model.addRow(new Object[]{showpathName}); } else { JOptionPane.showMessageDialog(this,"Incorrect File Format"); } } } // Variables declaration - do not modify private javax.swing.JButton Upload; private javax.swing.JFileChooser chooser; private javax.swing.JPanel jPanel1; private javax.swing.JScrollPane jScrollPane1; private javax.swing.JTable table; // End of variables declaration }




I am using netbeans and in applet viewer it works fine.But when i use it in jsp page,it gives me following errors

/**************************************************/

Java Plug-in 1.6.0_25
Using JRE version 1.6.0_25-b06 Java HotSpot(TM) Client VM
User home directory = C:\Users\Computer
----------------------------------------------------
c: clear console window
f: finalize objects on finalization queue
g: garbage collect
h: display this help message
l: dump classloader list
m: print memory usage
o: trigger logging
q: hide console
r: reload policy configuration
s: dump system and deployment properties
t: dump thread list
v: dump thread stack
x: clear classloader cache
0-5: set trace level to <n>
----------------------------------------------------


java.lang.RuntimeException: java.lang.NoClassDefFoundError: org/apache/http/client/HttpClient
at sun.plugin2.applet.Plugin2Manager.createApplet(Unknown Source)
at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.NoClassDefFoundError: org/apache/http/client/HttpClient
at java.lang.Class.getDeclaredConstructors0(Native Method)
at java.lang.Class.privateGetDeclaredConstructors(Unknown Source)
at java.lang.Class.getConstructor0(Unknown Source)
at java.lang.Class.newInstance0(Unknown Source)
at java.lang.Class.newInstance(Unknown Source)
at sun.plugin2.applet.Plugin2Manager$12.run(Unknown Source)
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$000(Unknown Source)
at java.awt.EventQueue$1.run(Unknown Source)
at java.awt.EventQueue$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: org.apache.http.client.HttpClient
at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass0(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 20 more
Exception: java.lang.RuntimeException: java.lang.NoClassDefFoundError: org/apache/http/client/HttpClient

/******************************************************************************/

i added jar file of applet in my web project.Please guys help me..if there is any other way to upload images than please post be the codes.Its urgent.

thanks a lot...all i had to do was clear alldata..its working now.

i am new to servlet and jsp..I retrieve values from database and set it in a arraylist of bean in servlet.That arraylist of bean is later displayed in jsp page...But after at second run of servlet duplicate values get printed in jsp..Guys help me....
/*****This is my servlet********************************/ public class FindDoctor extends HttpServlet { ConnectionFile connection = new ConnectionFile(); List<Object> allData=new ArrayList<Object>(); protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { try { // HttpSession session = request.getSession(); // session.removeAttribute("DoctorList"); String Name,Category; int StartTime,EndTime,DoctorId; System.out.println("FindDoctor servlet started"); // HttpSession session = request.getSession(); // String Id = (String) session.getAttribute("Id"); // int id = Integer.parseInt("Id"); /**Get Category and Day from Form*****************/ String category = request.getParameter("category"); System.out.println("Category is "+category); String day= request.getParameter("day"); int i=0; /*****Form parameter received*********/ /*****Select from Doctor Details table********/ Connection con = connection.connectionfile(); PreparedStatement pstmt = con.prepareStatement("select * from DoctorSchedule where Category=? and Day=?"); pstmt.setString(1,category); pstmt.setString(2,day); ResultSet rs = pstmt.executeQuery(); Connection con1 = connection.connectionfile(); while(rs.next()) { System.out.println("Match Found for DoctorId"); /****Retrieve Doctor information from DoctorId*************/ Category = rs.getString("Category"); System.out.println("Category "+Category); StartTime = rs.getInt("StartTime"); System.out.println("StartTime "+StartTime); EndTime = rs.getInt("EndTime"); System.out.println("EndTime "+EndTime); PreparedStatement pstmt1 = con1.prepareStatement("select * from DoctorDetail where DoctorId=?"); System.out.println("Here executed"); DoctorId = rs.getInt("DoctorId"); pstmt1.setInt(1,DoctorId); ResultSet rs1 = pstmt1.executeQuery(); /****Create Bean to store all data************/ rs1.next(); Name = rs1.getString("Name"); DataFields d=new DataFields(Name,DoctorId,Category,StartTime,EndTime); allData.add(i,d); i++; } HttpSession session1 = request.getSession(); session1.setAttribute("DoctorList",allData); response.sendRedirect("appointmentview.jsp"); con.close(); con1.close(); } catch(Exception error) { System.out.println("Error "+error); } } // <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> } /******************************DatFields******************************/ */ public class DataFields { String name; String category; int DoctorId; int starttime; int endtime; public DataFields(String name,int DoctorId,String category,int starttime,int endtime) { this.name=name; this.category=category; this.starttime=starttime; this.endtime=endtime; this.DoctorId=DoctorId; } } /***********ShowDataBean***************************/ public class ShowDataBean implements Serializable { public String name; public String category; public int starttime; public int endtime; public String photopath; int doctorid; ConnectionFile connection = new ConnectionFile(); List<Object> allData=new ArrayList<Object>(); Object obj=new Object(); public int getDoctorid() { this.doctorid =((DataFields)obj).DoctorId; return doctorid; } public void setObj(Object obj) { this.obj=obj; } public String getName() { this.name=((DataFields)obj).name; return name; } public String getCategory() { this.category=((DataFields)obj).category; return category; } public int getEndtime() { this.endtime=((DataFields)obj).endtime; return endtime; } public String getPhotopath() { return photopath; } public int getStarttime() { this.starttime=((DataFields)obj).starttime; return starttime; } }