Create a gist now

Instantly share code, notes, and snippets.

What would you like to do?
Price Servlet for "Dial-a-bookprice" service
package com.appspot.flipring;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URL;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import com.ozonetel.kookoo.CollectDtmf;
import com.ozonetel.kookoo.Response;
public class PriceServlet extends HttpServlet {
private static final long serialVersionUID = 6405416403272879573L;
private static final String STATE = "state";
private static final String VAL_STATE_SEARCH = "search";
private static final String VAL_STATE_HELLO = "hello";
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
HttpSession session = req.getSession();
String state = (String) session.getAttribute(PriceServlet.STATE);
Response responseXML = new Response();
CollectDtmf collectDtmf = new CollectDtmf();
if (state == null || state.equals(VAL_STATE_HELLO)) {
collectDtmf.addPlayText("To know the price of a book, please enter the I S B N number of the book");
session.setAttribute(STATE, VAL_STATE_SEARCH);
} else if (state.equals(VAL_STATE_SEARCH)) {
Book book = new Book(req.getParameter("data"));
collectDtmf.addPlayText(book.bookName);
collectDtmf.addPlayText(" is priced at rupees ");
collectDtmf.addPlayText(book.price);
collectDtmf.addPlayText(" after a discount of " + book.discount);
collectDtmf.addPlayText("Thank you");
session.setAttribute(STATE, VAL_STATE_HELLO);
}
responseXML.addCollectDtmf(collectDtmf);
resp.getWriter().print(responseXML.getXML());
}
}
class Book {
String price;
String bookName;
String ISBN;
String discount;
public Book(String isbn) {
URL url;
try {
String priceTag = "<span class=\"product_our_price\">Rs. ";
String bookTag = "<meta name=\"og_title\" property=\"og:title\" content=\"";
String discountTag = "<span class=\"product_you_save\">Rs. ";
url = new URL("http://www.flipkart.com/search-book?dd=0&query=" + isbn);
BufferedReader reader = new BufferedReader(new InputStreamReader(url.openStream()));
String line = null;
while ((line = reader.readLine()) != null) {
int start = line.indexOf(priceTag);
if (start != -1) {
this.price = line.substring(start + priceTag.length(), line.indexOf("</", start));
}
start = line.indexOf(discountTag);
if (start != -1) {
this.discount = line.substring(start + discountTag.length(), line.indexOf("</", start));
}
start = line.indexOf(bookTag);
if (start != -1) {
this.bookName = line.substring(start + bookTag.length(), line.indexOf("\"/>", start));
}
}
reader.close();
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment