running servlet after the browser is closed

[preethi Ayyappan]

Hi,

I am having a jsp page which selects a network from a combo box and submit to a servlet which get the network from the jsp page and dials the contact numbers from the network.I am refreshing the servlet page.

Now what i need is if i close the servlet page the refresh stops and the whole process stops.How can i proceed the servlet's process even after i close the browser?please assist me to do this.

Thanks

[Bauke Scholtz]

Run it in a separate thread.

[RaviNada Kiran]

preethi Ayyappan wrote:Hi,

I am refreshing the servlet page.

what do you mean by refreshing the servlet page ?? and how are you closing the servlet page ?

Have you made a servlet that will produce a HTML View ??

[preethi Ayyappan]

yes,my servlet will produce a HTML View .And i used

response.setHeader("Refresh","1")

to refresh that page.

[RaviNada Kiran]

This should not happen , something is wrong.

Post your servlet code

[preethi Ayyappan]

    
 public void doGet(HttpServletRequest request,HttpServletResponse response)throws ServletException, IOException 
 {
	 PrintWriter out = response.getWriter();
	 HttpSession session = request.getSession(true);
	 campaign1="aircel";//session.getAttribute("campaign").toString();
	 out.print(campaign1+"is running");
	 try
	 {
	 	
	 	ManagerConnectionFactory factory = new ManagerConnectionFactory(
	 	        "192.168.1.196", "admin", "amp111");
	 	this.managerConnection = factory.createManagerConnection();
	 	Class.forName
	 	("com.mysql.jdbc.Driver").newInstance();
	 	conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/inboundcrm", "meetme", "meetme");
	 	st = conn.createStatement(); 
	 	rs=st.executeQuery("select * from queue where loginflag=1 and pausestatus=0 and calleridstatus=0");
	 	if(rs.next())
		{
		out.print("2 are free");
		try
		{
			Class.forName
		 	("com.mysql.jdbc.Driver").newInstance();
		 	conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/peopletech", "meetme", "meetme");
		 	st = conn.createStatement(); 
		 	rs2=st.executeQuery("select * from "+ campaign1 +" where flag=0 Limit 1");
		while(rs2.next())
		 	{
		 		String extnum=rs2.getString("extnum");
		 		out.print("extnum:"+extnum);
	 	OriginateAction originateAction;
	 	StatusAction statusAction;
        ManagerResponse originateResponse;
        statusAction=new StatusAction();
        originateAction = new OriginateAction();
        originateAction.setChannel("SIP/"+extnum);
        originateAction.setAsync(true);
        originateAction.setContext("default");
        originateAction.setExten("5101");
        originateAction.setPriority(new Integer(1));
        originateAction.setTimeout(new Integer(30000));

        // connect to Asterisk and log in
        managerConnection.login();

        // send the originate action and wait for a maximum of 30 seconds for Asterisk
        // to send a reply
        originateResponse = managerConnection.sendAction(originateAction, 30000);
       // originateResponse = managerConnection.sendAction(statusAction, 30000);
        ResponseEvents r = managerConnection.sendEventGeneratingAction(statusAction); 
        str=r.getEvents().toString();
out.print(str);
        // print out whether the originate succeeded or not
        System.out.println(originateResponse.getResponse());
       
        // and finally log off and disconnect
        managerConnection.logoff();
		 }
		}
		 catch(Exception e)
		 {
			 e.printStackTrace();
		 }
		}
	 }
	 catch(Exception e)
	 {
		 e.printStackTrace();
	 }
	 response.setHeader("Refresh", "5");
		
 }

If i select a network(example:vodafone) in jsp page and click start button,this servlet will work which gets the contact numbers from the selected network and dials the numbers.so i have to refresh this continuously to check the database
until I give stop in the jsp page.

[RaviNada Kiran]

Hi preethi ,

1.How did you confirm that the servlet is not refreshing ??

2. Try to set the Cache Headers on to the servlet .

If all above doesn't work then make changes from your calling jsp itself.

Inside JSP call a function on body onload and

 

<html>
<head>
<title>Bye1</title>
<script type="text/javascript">
function timedMsg()
{
var t=setInterval("me()",5000);
}

function me()
{
document.form.target =/Your servlet name here
document.form.submit();

}
</script>
</head>

<body onLoad="timedMsg()">
<form>
</form>
</body>
</html>

   

Hope this helps

[RaviNada Kiran]

remove refresh headers in servlet

[preethi Ayyappan]

Thanks.I will try this and reply you

[preethi Ayyappan]

Hi,I have tried your code inside my jsp code.But it remains in the same page.nothing happened there

  

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
	<html xmlns="http://www.w3.org/1999/xhtml">
		<head>
<meta name="keywords" content="" />
<meta name="description" content="" />
<link href="default.css" rel="stylesheet" type="text/css" />
<script type="text/javascript">  
 function timedMsg()  
 {  
 var t=setInterval("me()",5000);  
 }  
   
function me()  
 {  
 document.form.target ="/Voicebroadcast/Getvariables";
 document.form.submit();  
   
 }  
 </script>  
</head>
<body onLoad="timedMsg()">
<form >
<div id="wrapper">

<div id="header">
	<div  id="logo">
	<div align="center">
	<p >VOICE BROADCASTING</p>
	
	</div>
 
</div>
	<div id="menu">
		<ul>
			<li><a >Logout</a></li>
			</ul>
	</div>
</div>
</div>
<div id="page">
<div class="bgtop">
<div id="content">
		<div class="post">
			<div class="entry">
			</div>
			<div class="meta">
			</div>
	</div>
		<div class="post">
		  <div class="entry"> 
		  <table  border="0" >
  <tr>
  <th  >
	<table  border="0">
  <tr>
  <td  class="tt" >campaign</td>
    <td >
	<select name="contacts" id="contacts">
	<option value=>Select campaign</option>
	<%
	try
	{
		
        Class.forName
        ("com.mysql.jdbc.Driver").newInstance();
      Connection  conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/peopletech", "meetme", "meetme");
        Statement st = conn.createStatement();
        ResultSet rs=st.executeQuery("select * from tables");
        while(rs.next())
        {
        	 %>  	
   <option value="<%=rs.getString("campaign")%>"><%= rs.getString("campaign") %> </option>
             <%
        }
	}
	catch(Exception e)
	{
		e.printStackTrace();
	} %>
	</select>
	</td>
  </tr>
  <tr>
  <td class="tt" >Ratio</td>
    <td>
	<select name="Ratio" >
<option value=>Select ratio</option>
<%
try
	{
		 Class.forName
	        ("com.mysql.jdbc.Driver").newInstance();
	      Connection  conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/peopletech", "meetme", "meetme");
	        Statement st = conn.createStatement();
	        ResultSet rs1=st.executeQuery("select * from numbers");
 while (rs1.next())
 { %>
	 <option value="<%=rs1.getString("numbers")%>"><%= rs1.getString("numbers") %> </option>
	 <%
 }
	}
	catch(Exception e)
	{
		e.printStackTrace();
	}
	 %>	
</select>
	</td>
 </tr>
</table>
<table  border="0">
<tr>
<input type='submit' value='start' onclick=location.href='http://localhost:8080/Voicebroadcast/Getvariables' class='butt'>
			<tr ><td></td></tr>
<tr ><td></td></tr>
	</table>
	</th>
	</tr>
	</table>
	</div>
	<div class="meta">
	</div>
	</div>
		<div class="post">
		<div class="entry" align="center">
	<a ><b>Back</b></a>
		</div>
			<div class="meta">	
		</div>
		</div>
	</div>
<div id="sidebar">
		<ul>
			<li id="search">
		<fieldset>
				</fieldset>
						</li>
		<li>
				<img     />
			</li>
			<li>
			</li>
			<li>
				</li>
		</ul>
	</div>
	<div style="clear: both;"> </div>
</div>
</div>
<div id="footer">
</div>
</form>
</body>
</html>
			
		
 

I need to give the servletclass name in form action also?

Thanks

[RaviNada Kiran]

servlet class name??

Give the url pattern name for which the particular servlet will be get called.

[RaviNada Kiran]

why are you creating connections for every time you select option .Make a utility class and call that method or in your case simply override the init method of the jsp and obtain a common connection from there .