Know which key has been
pressed
With dynamically generated VXML files, you can pretty much do
whatever you want with your application. In this sample, we'll
collect key press 1 - 5 from our customer. The following is the
updated start.jsp file:
<?xml
version="1.0"?>
<vxml version="1.0">
<%
String ans = request.getParameter("ans");
boolean isAnsweringMachine = ("t".equals(ans));
%>
<form id="td">
<% if (isAnsweringMachine)
{ %>
<block>
<audio src="audio/answering.wav"/>
</block>
<% } else {
%>
<field name="rating">
<prompt timeout="10s">
<block>
<audio src="audio/live.wav"/>
</block>
</prompt>
<dtmf>
1 | 2 | 3 | 4 | 5
</dtmf>
<filled>
<submit next="recordrating.jsp" namelist="rating"/>
</filled>
</field>
<% } %>
</form>
</vxml>
This start.jsp file will generate the follow VXML for live
human pickup:
<?xml
version="1.0"?>
<vxml version="1.0">
<form id="td">
<field name="rating">
<prompt timeout="10s">
<block>
<audio src="audio/live.wav"/>
</block>
</prompt>
<dtmf>
1 | 2 | 3 | 4 | 5
</dtmf>
<filled>
<submit next="recordrating.jsp" namelist="rating"/>
</filled>
</field>
</form>
</vxml>
As you can see the key press is captured by VXML file's
"rating" field. This value is then submitted to the next JSP file
called recordrating.jsp.
<?xml
version="1.0"?>
<vxml version="1.0">
<%
String key = request.getParameter("rating");
int ratetotal = 1;
Integer RateTotal = (Integer) application.getAttribute("rate"
+ key);
if (RateTotal != null)
ratetotal = RateTotal.intValue() + 1;
application.setAttribute("rate" + key, new Integer(ratetotal));
%>
<form id="td">
<block>
<audio src="audio/thankyou.wav"/>
</block>
</form>
</vxml>
Here we simply record the key press as application attributes.
A thank you message is returned the gateway. It should be
quite easy to change the code such that the key press is saved to
a relational database, for example.
You can test your recordrating.jsp with your browser
using the following address:
http://localhost:8155/ocall/myapp/recordrating.jsp?rating=3
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