io.vertx.core.http.HttpServerResponse#headers ( )源码实例Demo

/**
 * Internally used to send a "Not Modified" response when appropriate. In any case this method will set the e-tag header, if the task
 * response has generated an e-tag.
 *
 * @param task the task for which to generate the "Not Modified" response.
 * @return true if a response has been send; false if not.
 */
private boolean sendNotModifiedResponseIfNoneMatch(final Task task) {
  //If the task has an ETag, set it in the HTTP header.
  //Set the ETag header
  if (task.getEtag() != null) {
    final RoutingContext context = task.context;
    final HttpServerResponse httpResponse = context.response();
    final MultiMap httpHeaders = httpResponse.headers();

    httpHeaders.add(HttpHeaders.ETAG, task.getEtag());

    //If the ETag didn't change, return "Not Modified"
    if (task.etagMatches()) {
      sendResponse(task, NOT_MODIFIED, null, null);
      return true;
    }
  }

  return false;
}
 

@Override
public void appendServerFormattedItem(ServerAccessLogEvent accessLogEvent, StringBuilder builder) {
  HttpServerResponse response = accessLogEvent.getRoutingContext().response();
  if (null == response || null == response.headers() || StringUtils.isEmpty(response.headers().get(varName))) {
    builder.append(RESULT_NOT_FOUND);
    return;
  }
  builder.append(response.headers().get(varName));
}
 

private void handlePlainText(HttpServerRequest request) {
  HttpServerResponse response = request.response();
  MultiMap headers = response.headers();
  for (int i = 0;i < plaintextHeaders.length; i+= 2) {
    headers.add(plaintextHeaders[i], plaintextHeaders[i + 1]);
  }
  response.end(HELLO_WORLD_BUFFER);
}
 

private void handleJson(HttpServerRequest request) {
  HttpServerResponse response = request.response();
  MultiMap headers = response.headers();
  headers
      .add(HEADER_CONTENT_TYPE, RESPONSE_TYPE_JSON)
      .add(HEADER_SERVER, SERVER)
      .add(HEADER_DATE, dateString);
  response.end(new Message("Hello, World!").toBuffer());
}