GetBotResponseServlet.java

package org.aitools.programd.server.servlet;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.jdom.Text;

/**
 * A simple HTTP GET based servlet which accepts a user input and botid as request parameters and returns the reply as a
 * single string (not an HTML page!).
 * 
 * @author <a href="mailto:noel@aitools.org">Noel Bush</a>
 */
public class GetBotResponseServlet extends BotServlet {

  /**
   * 
   */
  private static final long serialVersionUID = 1L;

  @Override
  protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException {
    super.doGet(req, resp);
    resp.setContentType(req.getContentType());
    resp.setCharacterEncoding(req.getCharacterEncoding());
    PrintWriter writer = null;
    try {
      writer = resp.getWriter();
    }
    catch (IOException e) {
      throw new ServletException("IO exception when trying to get response printwriter.", e);
    }
    String input = req.getParameter("input");
    if (input == null) {
      return;
    }
    writer.write(Text.normalizeString(this.core.getResponse(input, this.userid, this.botid)));
    writer.flush();
    writer.close();
  }
}