sai pabb

Servlet is getting a input stream from an applet. at the while(line is.read(b) >0) I'm getting exception as timeout.
See below for servlet code.
ObjectInputStream inputFromApplet = null; //response.setContentType("application/x-java-serialized-object"); InputStream is = request.getInputStream(); byte[] b = new byte[1024]; File f = new File("c:\\OPT\\out.png"); FileOutputStream fos = new FileOutputStream(f); while(is.read(b)>0){ fos.write(b); } fos.close(); try { Object o = inputFromApplet.readObject(); } catch (ClassNotFoundException e) { e.printStackTrace(); }
See below for the applet code which sends the byteArray.
Image image=selected.getImage(); ImageIcon imageIcon = new ImageIcon(image); BufferedImage bufferedImage=new BufferedImage(image.getWidth(null), image.getHeight(null), BufferedImage.TYPE_INT_RGB); bufferedImage.createGraphics().drawImage(image, 0, 0, null); //JOptionPane.showMessageDialog(centerPanel, "Test", "TEST", JOptionPane.DEFAULT_OPTION); ByteArrayOutputStream baos = new ByteArrayOutputStream(); // ObjectOutputStream oos = new ObjectOutputStream(baos); // oos.writeObject(baos); ImageIO.write(bufferedImage, "png", baos); String location = "http://localhost:8080/greenClinicals/ScanFacade"; URL testServlet = new URL(location); HttpURLConnection httpConn = (HttpURLConnection) testServlet.openConnection(); httpConn.setRequestMethod("POST"); httpConn.setDoOutput(true); httpConn.setDoInput(true); httpConn.setRequestProperty("Content-Type", "image/png"); httpConn.setRequestProperty("Content-Length", Integer.toString(baos.size())); httpConn.connect(); //URLConnection servletConnection = testServlet.openConnection(); ObjectInputStream inputFromClient; inputFromClient = new ObjectInputStream(httpConn.getInputStream()); JOptionPane.showMessageDialog(centerPanel, testServlet.getPath(), "TEST", JOptionPane.DEFAULT_OPTION); // inform the connection that we will send output and accept input // servletConnection.setDoInput(true); // servletConnection.setDoOutput(true); // servletConnection.setUseCaches (false); OutputStream outputToServlet = httpConn.getOutputStream();//new ObjectOutputStream(servletConnection.getOutputStream()); // Properties properties = new Properties(); // properties.put("image", imageIcon); //properties.put(//"", value) // serialize the object //ImageIO.write(bufferedImage, "png", outputToServlet); // outputToServlet.writeObject(imageIcon); // outputToServlet.writeInt(1); //outputToServlet.write(1); //Byte[] b = baos.wri outputToServlet.write(baos.toByteArray()); // baos.writeTo(outputToServlet); outputToServlet.flush(); outputToServlet.close(); inputFromClient.close();

What is the fix to remove the timeout?

Hi,

I have ImageIcon object on the client, Hw do i send it as a parameter to the servlet? I'm able to send string parameters as GET method, but not able to figure sending byteArray to the server.

Yeah.. the password was wrong. I had to recollect it to get rid of it.

Awesome.!! thanks a lot!! worked like a charm!

When I try to sign a new applet with the following command I get the exception

>keytool -genkey -keyalg rsa -alias tstkey
Enter keystore password:******
keytool error: java.io.IOException: Keystore was tampered with, or password was
incorrect

What could be the problem?

Hello,

I'm calling srvlet from an applet using the following code. I've kept a debugger on the srvlet which is expecting the call. When the call is fired, no call came to the server. When I ran the same through the normal browser it is working. Should I run the applet from the browser to make a server call? or can I run the applet by clickin on the run button in the eclipse and make a server call from here?
String location = "http://localhost:8080/path/ScanFacade"; URL testServlet = new URL( location ); URLConnection servletConnection = testServlet.openConnection(); // inform the connection that we will send output and accept input servletConnection.setDoInput(true); servletConnection.setDoOutput(true); // Don't use a cached version of URL connection. servletConnection.setUseCaches (false); servletConnection.setDefaultUseCaches (false); // Specify the content type that we will send binary data //servletConnection.setRequestProperty("Content-Type", "application/octet-stream"); // send the student object to the servlet using serialization ObjectOutputStream outputToServlet = new ObjectOutputStream(servletConnection.getOutputStream()); // serialize the object outputToServlet.writeObject(imageIcon); outputToServlet.flush(); outputToServlet.close();

Hello,

I'm new to Java images/IO. I've an api which gives me Image object, All I need to do is save the Image onto the server. So, Applet gets an image from the sanner api, the api returns Image object. I need to serialize this and send this to the servlets. Now the servlet has to save this onto the filesystem. Could you help me through this process?

Thanks a lot guyz!!! You definitely cleared my doubt!!

Hello Forum,

I've done java programming before. But, I'm not sure if i can call a scanner(or any other programme which is outside the tomcat and in the same system) which is attached to the server from the Tomcatserver Java Spring application. I have the API which can take care of calling the scanner. But, can it be done is the question?

if not what can be done?