Hit counter on JSP page

Question

Hello java-ites,
I want to create a counter on jsp page. How do I do it?
Any help is appreciated.
Many thanks.
-Arun Chellapa.

Answer 1

The way that I have used it as I have a myCounter.txt file that stores the last generated value and is stored.
Make one JSP page with the sample code as
     long counter = 0 ;
     int stringLength = 0;
     String sessionId = null;
     String checkSessionId = null;
     String tempCounter = "";
     boolean flag = false;
     HttpSession hs = request.getSession(true);
     checkSessionId = (String)hs.getValue("sessionId");
     if(checkSessionId == null){
          sessionId = request.getSession().getId();
          hs.putValue("sessionId", sessionId);
          flag = true;
     checkSessionId = (String)hs.getValue("sessionId");
     if(flag) {
          counter = hitCounter.getNextCount();     
     else{
          counter = hitCounter.getCount();
     tempCounter = Long.toString(counter);
     stringLength = tempCounter.length();
     for(int count = 0 ; count < stringLength ; count++){
%>
          <b><%=tempCounter.substring(count, count + 1)%></b>
<%
%>This JSP page can be included in your main JSP page
Here is the Java class
public class HitCounter{
     private long hitCounter;
    public HitCounter(){
          Runtime.getRuntime().addShutdownHook(new SaveCounter(this));
          try{
               DataInputStream dis = new DataInputStream(new FileInputStream(NamedConstants.ERROR_FILE_PATH + "myCounter.txt"));
               hitCounter = dis.readLong();
               dis.close();
          }catch(EOFException ee){
               saveIT();
          }catch(Exception e ){
               System.out.println("Exception thrown " +e);
     public long getNextCount(){
           ++this.hitCounter;
           saveIT();
           return this.hitCounter;
     public long getCount (){
          return this.hitCounter;
     public void saveIT(){
          try{
               DataOutputStream dos = new DataOutputStream(new FileOutputStream(NamedConstants.ERROR_FILE_PATH + "myCounter.txt"));
               dos.writeLong(hitCounter);
               dos.close();
          }catch(Exception e ) {
               System.out.println("Exception thrown while saving "+e);
     protected void finalize(){
          saveIT();
}