JsonServlet.java 904 B

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  1. package hello;
  2. import co.paralleluniverse.fibers.Suspendable;
  3. import co.paralleluniverse.fibers.servlet.FiberHttpServlet;
  4. import com.fasterxml.jackson.databind.ObjectMapper;
  5. import java.io.IOException;
  6. import javax.servlet.ServletException;
  7. import javax.servlet.http.HttpServletRequest;
  8. import javax.servlet.http.HttpServletResponse;
  9. public final class JsonServlet extends FiberHttpServlet {
  10. private static final class HelloWorldData {
  11. @SuppressWarnings("unused")
  12. public final String message = "Hello, World!";
  13. }
  14. private static final ObjectMapper mapper = new ObjectMapper();
  15. @Override
  16. @Suspendable
  17. protected final void doGet(final HttpServletRequest req, final HttpServletResponse resp) throws ServletException, IOException {
  18. resp.setContentType("application/json");
  19. resp.setHeader("Server", "comsat-servlet");
  20. mapper.writeValue(resp.getOutputStream(), new HelloWorldData());
  21. }
  22. }