import java.io.IOException;

import javax.servlet.ServletException;

import javax.servlet.annotation.WebServlet;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import service.RegisterationService;

import service.SignatureService;

import service.UnknownApplicationException;

/**

* Servlet implementation class SignMessageServlet

*/

@WebServlet("/sign")

public class SignMessageServlet extends HttpServlet {

private static final long serialVersionUID = 1L;

/**

* @see HttpServlet#HttpServlet()

*/

public SignMessageServlet() {

super();

// TODO Auto-generated constructor stub

}

/**

* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)

*/

protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

String appid = request.getParameter("appid");

String token = request.getParameter("token");

String message = request.getParameter("message");

JsonBuilder json = new JsonBuilder();

if(appid != null) {

SignatureService service = SignatureService.getInstance();

try {

String sig = service.sign(appid, token, message);

json.put("result", "1");

json.put("signature", sig);

} catch (UnknownApplicationException e) {

json.put("result", "-1");

}

}

response.setContentType("application/json");

response.setCharacterEncoding("UTF-8");

response.getWriter().write(json.getJson());

}

}