Examples with JsonException elemental.json.JsonException used on opensource projects

Example 6 with JsonException

use of elemental.json.JsonException in project flow by vaadin.

the class UidlRequestHandler method synchronizedHandleRequest.

@Override
public boolean synchronizedHandleRequest(VaadinSession session, VaadinRequest request, VaadinResponse response) throws IOException {
    UI uI = session.getService().findUI(request);
    if (uI == null) {
        // This should not happen but it will if the UI has been closed. We
        // really don't want to see it in the server logs though
        commitJsonResponse(response, VaadinService.createUINotFoundJSON(false));
        return true;
    }
    StringWriter stringWriter = new StringWriter();
    try {
        getRpcHandler(session).handleRpc(uI, request.getReader(), request);
        writeUidl(uI, stringWriter, false);
    } catch (JsonException e) {
        getLogger().error("Error writing JSON to response", e);
        // Refresh on client side
        writeRefresh(response);
        return true;
    } catch (InvalidUIDLSecurityKeyException e) {
        getLogger().warn("Invalid security key received from {}", request.getRemoteHost());
        // Refresh on client side
        writeRefresh(response);
        return true;
    } catch (ResynchronizationRequiredException e) {
        // NOSONAR
        // Resync on the client side
        writeUidl(uI, stringWriter, true);
    } finally {
        stringWriter.close();
    }
    commitJsonResponse(response, stringWriter.toString());
    return true;
}

Example 7 with JsonException

use of elemental.json.JsonException in project flow by vaadin.

the class VaadinService method createCriticalNotificationJSON.

/**
 * Creates a JSON message which, when sent to client as-is, will cause a
 * critical error to be shown with the given details.
 *
 * @param caption
 *            The caption of the error or null to omit
 * @param message
 *            The error message or null to omit
 * @param details
 *            Additional error details or null to omit
 * @param url
 *            A url to redirect to. If no other details are given then the
 *            user will be immediately redirected to this URL. Otherwise the
 *            message will be shown and the browser will redirect to the
 *            given URL only after the user acknowledges the message. If
 *            null then the browser will refresh the current page.
 * @param querySelector
 *            Query selector to find the element under which the error will
 *            be added . If element is not found or the selector is
 *            {@code null}, body will be used
 * @return A JSON string to be sent to the client
 */
public static String createCriticalNotificationJSON(String caption, String message, String details, String url, String querySelector) {
    try {
        JsonObject appError = Json.createObject();
        putValueOrJsonNull(appError, "caption", caption);
        putValueOrJsonNull(appError, "url", url);
        putValueOrJsonNull(appError, "message", message);
        putValueOrJsonNull(appError, "details", details);
        putValueOrJsonNull(appError, "querySelector", querySelector);
        JsonObject meta = Json.createObject();
        meta.put("appError", appError);
        JsonObject json = Json.createObject();
        json.put("changes", Json.createObject());
        json.put("resources", Json.createObject());
        json.put("locales", Json.createObject());
        json.put("meta", meta);
        json.put(ApplicationConstants.SERVER_SYNC_ID, -1);
        return wrapJsonForClient(json);
    } catch (JsonException e) {
        getLogger().warn("Error creating critical notification JSON message", e);
        return wrapJsonForClient(Json.createObject());
    }
}