What is SpeakRight?

SpeakRight is an open-source Java framework for writing speech recognition applications in VoiceXML.Unlike most proprietary speech-app tools, SpeakRight is code-based. Applications are written in Java using SpeakRight's extensible classes. Java IDEs such as Eclipse provide great debugging, fast Java-aware editing, and refactoring. Dynamic generation of VoiceXML is done using the popular StringTemplate templating framework. Read more...

See Getting Started, Tutorial, and Table of Contents
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Friday, March 2, 2007

Servlets

Let's consider how to enclose a SpeakRight application in a Java servlet. Servlets are a portable API for responding to HTTP requests. Tomcat or other types of web servers (such as TBD) support servlets.

SpeakRight provides a class, SRServletRunner, that does most of the work. Here's how to use it in the doGet method of a servlet

protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
SRServletRunner runner = new SRServletRunner(new AppFactory(), this, request, response, "GET");

if (runner.isNewSession()) {
SRRunner run = runner.createNewSRRunner(this);
IFlow flow = new App();
runner.startApp(flow);
} else {
runner.logger().log("contine in GET!!");
runner.continueApp();
}
}

First we pass the request and response objects into SRServletRunner, along with a string (used for logging) and our app factory (see Initialization). Then we check if this is a new session. If it is then we create our SpeakRight application and call startApp; otherwise we call continueApp. SRServletRunner manages passifying and re-activating the SpeakRight runtime between HTTP requests.

Logging is done using log4j.

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