Java

package opti;
import java.io.*;
import java.util.*;
import javax.comm.*;
/*
 * ===============================UVHC==========================================
 */
public class Txmodem implements  SerialPortEventListener, 
  CommPortOwnershipListener {
  static String comPort = "COM1"; // Port COM connecté au Modem 
 
  private CommPortIdentifier portId = null;
  private Enumeration portList;
  private InputStream inputStream = null;
  private OutputStream outputStream = null;
  private SerialPort serialPort;
  /**  instance  Txmodem */
  public Txmodem(String comm) {
    this.comPort = comm;
  }

  public boolean init() {
    portList = CommPortIdentifier.getPortIdentifiers();
    while (portList.hasMoreElements()) {
      portId = (CommPortIdentifier) portList.nextElement();
      if (portId.getPortType() == CommPortIdentifier.PORT_SERIAL) {
        if (portId.getName().equals(comPort)) {
          return true;
        }
      }
    }
    return false;
  }

 
  public void send(String cmd) {
    try {
      outputStream.write(cmd.getBytes());
    } catch (IOException e) {
      e.printStackTrace();
    }
  }

  public void sendMessage(String phoneNumber, String message) {
    send("AT+CMGS=\"" + phoneNumber + "\"\r\n");// envoie la commande AT
  
    send(message);//envoie contenu du message 
    send("\032");// envoie du CtrlZ
  }

  public void connect() throws NullPointerException {
    if (portId != null) {
      try {
        portId.addPortOwnershipListener(this);
        serialPort = (SerialPort) portId.open("Txmodem", 2000);//ouverture du portSeri
      } catch (PortInUseException e) {
        e.printStackTrace();
      }
      try {
        inputStream = serialPort.getInputStream();
        outputStream = serialPort.getOutputStream();
      } catch (IOException e) {
        e.printStackTrace();
      }
      try {
        /** evenements sur le port*/
        serialPort.addEventListener(this);
        serialPort.notifyOnDataAvailable(true);
      } catch (TooManyListenersException e) {
        e.printStackTrace();
      }

    } else {
      throw new NullPointerException("COM Port non trouvé!!");
    }
  }
   
  public void serialEvent(javax.comm.SerialPortEvent serialPortEvent) {
    switch (serialPortEvent.getEventType()) {
      case SerialPortEvent.BI:
      case SerialPortEvent.OE:
      case SerialPortEvent.FE:
      case SerialPortEvent.PE:
      case SerialPortEvent.CD:
      case SerialPortEvent.CTS:
      case SerialPortEvent.DSR:
      case SerialPortEvent.RI:
      case SerialPortEvent.OUTPUT_BUFFER_EMPTY:
      case SerialPortEvent.DATA_AVAILABLE:
        byte[] readBuffer = new byte[2048];
        try {
          while (inputStream.available() >
          0) 
          {
            int numBytes = inputStream.read(readBuffer);
          }
// response message
          System.out.print(new String(readBuffer));
        } catch (IOException e) {
        }
        break;
    }
  }
  
  public void ownershipChange(int type) {
    switch (type) {
      case CommPortOwnershipListener.PORT_UNOWNED:
        System.out.println(portId.getName() + ": PORT_UNOWNED");
        break;
      case CommPortOwnershipListener.PORT_OWNED:
        System.out.println(portId.getName() + ": PORT_OWNED");
        break;
      case CommPortOwnershipListener.PORT_OWNERSHIP_REQUESTED:
        System.out.println(portId.getName() + ": PORT_INUSED");
        break;
    }
  }
  public static void main(String args[]) {
    Txmodem gsm = new Txmodem(comPort);
    if (gsm.init()) {
      try {
        gsm.connect();
      
        Thread.sleep(5000);
        
        gsm.sendMessage("PHONENUMBER", "HERETEHMESSAGE");
        Thread.sleep(20000);
       
      } catch (Exception e) {
        e.printStackTrace();
      }
    } else {
      System.out.println("ne peut initialiser la carte");
    }
  }
}

am using spring MVC and jsp for developing the application. I have a scenario in which I can create or delete a record. index.jsp is the main page where users can see all the records, from there we can create or delete the record, once created or deleted the controller comes back to the same index.jsp with latest changes being shown on the page. Issue is its working fine in FF and chrome but in IE, if I want to see the latest added record or remove the deleted record from the list, I have to close the browser manually and reopen it. I have tried all possible response.setHeaders..to remove the cache in IE. The other approach I tried is to redirect the spring controller, but still IE is not refreshing and not showing the latest changes in index page. Code is as below:

  <pre lang="java">@RequestMapping(value = "/createRequest", method = RequestMethod.GET)
        public ModelAndView createRequest(final HttpServletRequest request,
                final HttpServletResponse response,..)
        //logic to create or delete record..
                return new ModelAndView("redirect:myredirectPage.htm");
        }

        @RequestMapping(value="/myredirectPage", method=RequestMethod.GET)
        public ModelAndView showMyRedirectPage(){
           ModelAndView modelView = new ModelAndView("index");
           return modelView;
        } 

<%
    response.setHeader("Cache-Control","no-cache");
    response.setHeader("Pragma","no-cache");
    response.setDateHeader ("Expires", -1);
    %>
    <%@ page language="java" contentType="text/html; charset=ISO-8859-1" pageEncoding="ISO-8859-1"%>
    <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
    <html>
    <head>
 <META HTTP-EQUIV="PRAGMA" CONTENT="NO-CACHE">
    <META HTTP-EQUIV="Expires" CONTENT="-1">
   ..

    </html>

<%
    response.setHeader("Cache-Control","no-cache");
    response.setHeader("Pragma","no-cache");
    response.setDateHeader ("Expires", -1);
    %>
    <!DOCTYPE HTML>
    <head>
    <META HTTP-EQUIV="PRAGMA" CONTENT="NO-CACHE">
    <META HTTP-EQUIV="Expires" CONTENT="-1">

    <%@page isELIgnored="false" %>
    <%@ page language="java" contentType="text/html; charset=ISO-8859-1" pageEncoding="ISO-8859-1"%>
    <%@page import="java.util.Date" %>
    ...

Query q = session.createQuery("select C from A inner join C.A where A.Id="+String.valueOf(a.getId()));