MapByteServlet.java
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package servlet;
import core.repository.Map;
import core.service.MapService;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
/**
* Servlet designed to access to map image bytes. This kind of request is usually sent by clients.
*
* Created by Guillaume on 29/05/2017.
*/
public class MapByteServlet extends HttpServlet {
@Override
public void service (final HttpServletRequest servletRequest, final HttpServletResponse servletResponse)
throws ServletException, IOException {
MapService mapService = new MapService();
int mapId = Integer.parseInt(servletRequest.getParameter("MAP_ID"));
Byte[] mapBytes = mapService.getMapContent(mapId);
servletResponse.setContentType("image/png");
servletResponse.getWriter().print(byteToString(mapBytes));
}
private String byteToString(Byte[] bytes) {
StringBuffer sb = new StringBuffer();
for(Byte currByte : bytes){
sb.append(currByte.toString());
}
return sb.toString();
}
@Override
public void doGet(final HttpServletRequest servletRequest, final HttpServletResponse servletResponse)
throws ServletException, IOException {
service(servletRequest, servletResponse);
}
@Override
public void doPost(final HttpServletRequest servletRequest, final HttpServletResponse servletResponse)
throws ServletException, IOException {
service(servletRequest, servletResponse);
}
}