本文整理了Java中io.vertx.core.http.HttpClient.headNow()方法的一些代码示例，展示了HttpClient.headNow()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。HttpClient.headNow()方法的具体详情如下：
包路径：io.vertx.core.http.HttpClient
类名称：HttpClient
方法名：headNow

HttpClient.headNow介绍

[英]Sends an HTTP HEAD request to the server at the specified host and port, specifying a response handler to receive the response
[中]在指定的主机和端口向服务器发送HTTP HEAD请求，并指定接收响应的响应处理程序

代码示例

代码示例来源：origin: vert-x3/vertx-rx

/**
 * Sends an HTTP HEAD request  to the server at the default host and port, specifying a response handler to receive
 * the response
 * @param requestURI the relative URI
 * @param responseHandler the response handler
 * @return a reference to this, so the API can be used fluently
 */
public io.vertx.rxjava.core.http.HttpClient headNow(String requestURI, Handler<AsyncResult<io.vertx.rxjava.core.http.HttpClientResponse>> responseHandler) { 
 delegate.headNow(requestURI, new Handler<AsyncResult<io.vertx.core.http.HttpClientResponse>>() {
  public void handle(AsyncResult<io.vertx.core.http.HttpClientResponse> ar) {
   if (ar.succeeded()) {
    responseHandler.handle(io.vertx.core.Future.succeededFuture(io.vertx.rxjava.core.http.HttpClientResponse.newInstance(ar.result())));
   } else {
    responseHandler.handle(io.vertx.core.Future.failedFuture(ar.cause()));
   }
  }
 });
 return this;
}

代码示例来源：origin: vert-x3/vertx-rx

/**
 * Sends an HTTP HEAD request to the server with the specified options, specifying a response handler to receive
 * the response
 * @param options the request options
 * @param responseHandler the response handler
 * @return a reference to this, so the API can be used fluently
 */
public io.vertx.rxjava.core.http.HttpClient headNow(RequestOptions options, Handler<AsyncResult<io.vertx.rxjava.core.http.HttpClientResponse>> responseHandler) { 
 delegate.headNow(options, new Handler<AsyncResult<io.vertx.core.http.HttpClientResponse>>() {
  public void handle(AsyncResult<io.vertx.core.http.HttpClientResponse> ar) {
   if (ar.succeeded()) {
    responseHandler.handle(io.vertx.core.Future.succeededFuture(io.vertx.rxjava.core.http.HttpClientResponse.newInstance(ar.result())));
   } else {
    responseHandler.handle(io.vertx.core.Future.failedFuture(ar.cause()));
   }
  }
 });
 return this;
}

代码示例来源：origin: vert-x3/vertx-rx

/**
 * Sends an HTTP HEAD request to the server at the specified host and default port, specifying a response handler to receive
 * the response
 * @param host the host
 * @param requestURI the relative URI
 * @param responseHandler the response handler
 * @return a reference to this, so the API can be used fluently
 */
public io.vertx.rxjava.core.http.HttpClient headNow(String host, String requestURI, Handler<AsyncResult<io.vertx.rxjava.core.http.HttpClientResponse>> responseHandler) { 
 delegate.headNow(host, requestURI, new Handler<AsyncResult<io.vertx.core.http.HttpClientResponse>>() {
  public void handle(AsyncResult<io.vertx.core.http.HttpClientResponse> ar) {
   if (ar.succeeded()) {
    responseHandler.handle(io.vertx.core.Future.succeededFuture(io.vertx.rxjava.core.http.HttpClientResponse.newInstance(ar.result())));
   } else {
    responseHandler.handle(io.vertx.core.Future.failedFuture(ar.cause()));
   }
  }
 });
 return this;
}

代码示例来源：origin: vert-x3/vertx-rx

/**
 * Sends an HTTP HEAD request to the server at the specified host and port, specifying a response handler to receive
 * the response
 * @param port the port
 * @param host the host
 * @param requestURI the relative URI
 * @param responseHandler the response handler
 * @return a reference to this, so the API can be used fluently
 */
public io.vertx.rxjava.core.http.HttpClient headNow(int port, String host, String requestURI, Handler<AsyncResult<io.vertx.rxjava.core.http.HttpClientResponse>> responseHandler) { 
 delegate.headNow(port, host, requestURI, new Handler<AsyncResult<io.vertx.core.http.HttpClientResponse>>() {
  public void handle(AsyncResult<io.vertx.core.http.HttpClientResponse> ar) {
   if (ar.succeeded()) {
    responseHandler.handle(io.vertx.core.Future.succeededFuture(io.vertx.rxjava.core.http.HttpClientResponse.newInstance(ar.result())));
   } else {
    responseHandler.handle(io.vertx.core.Future.failedFuture(ar.cause()));
   }
  }
 });
 return this;
}

代码示例来源：origin: io.vertx/vertx-rx-java

/**
 * Sends an HTTP HEAD request to the server with the specified options, specifying a response handler to receive
 * the response
 * @param options the request options
 * @param responseHandler the response handler
 * @return a reference to this, so the API can be used fluently
 */
@Deprecated()
public io.vertx.rxjava.core.http.HttpClient headNow(RequestOptions options, Handler<io.vertx.rxjava.core.http.HttpClientResponse> responseHandler) { 
 delegate.headNow(options, new Handler<io.vertx.core.http.HttpClientResponse>() {
  public void handle(io.vertx.core.http.HttpClientResponse event) {
   responseHandler.handle(io.vertx.rxjava.core.http.HttpClientResponse.newInstance(event));
  }
 });
 return this;
}

代码示例来源：origin: io.vertx/vertx-rx-java

/**
 * Sends an HTTP HEAD request  to the server at the default host and port, specifying a response handler to receive
 * the response
 * @param requestURI the relative URI
 * @param responseHandler the response handler
 * @return a reference to this, so the API can be used fluently
 */
@Deprecated()
public io.vertx.rxjava.core.http.HttpClient headNow(String requestURI, Handler<io.vertx.rxjava.core.http.HttpClientResponse> responseHandler) { 
 delegate.headNow(requestURI, new Handler<io.vertx.core.http.HttpClientResponse>() {
  public void handle(io.vertx.core.http.HttpClientResponse event) {
   responseHandler.handle(io.vertx.rxjava.core.http.HttpClientResponse.newInstance(event));
  }
 });
 return this;
}

代码示例来源：origin: io.vertx/vertx-rx-java

/**
 * Sends an HTTP HEAD request to the server at the specified host and default port, specifying a response handler to receive
 * the response
 * @param host the host
 * @param requestURI the relative URI
 * @param responseHandler the response handler
 * @return a reference to this, so the API can be used fluently
 */
@Deprecated()
public io.vertx.rxjava.core.http.HttpClient headNow(String host, String requestURI, Handler<io.vertx.rxjava.core.http.HttpClientResponse> responseHandler) { 
 delegate.headNow(host, requestURI, new Handler<io.vertx.core.http.HttpClientResponse>() {
  public void handle(io.vertx.core.http.HttpClientResponse event) {
   responseHandler.handle(io.vertx.rxjava.core.http.HttpClientResponse.newInstance(event));
  }
 });
 return this;
}

代码示例来源：origin: io.vertx/vertx-rx-java

/**
 * Sends an HTTP HEAD request to the server at the specified host and port, specifying a response handler to receive
 * the response
 * @param port the port
 * @param host the host
 * @param requestURI the relative URI
 * @param responseHandler the response handler
 * @return a reference to this, so the API can be used fluently
 */
@Deprecated()
public io.vertx.rxjava.core.http.HttpClient headNow(int port, String host, String requestURI, Handler<io.vertx.rxjava.core.http.HttpClientResponse> responseHandler) { 
 delegate.headNow(port, host, requestURI, new Handler<io.vertx.core.http.HttpClientResponse>() {
  public void handle(io.vertx.core.http.HttpClientResponse event) {
   responseHandler.handle(io.vertx.rxjava.core.http.HttpClientResponse.newInstance(event));
  }
 });
 return this;
}

代码示例来源：origin: io.vertx/vertx-lang-groovy

public static io.vertx.core.http.HttpClient headNow(io.vertx.core.http.HttpClient j_receiver, java.util.Map<String, Object> options, io.vertx.core.Handler<io.vertx.core.http.HttpClientResponse> responseHandler) {
 io.vertx.core.impl.ConversionHelper.fromObject(j_receiver.headNow(options != null ? new io.vertx.core.http.RequestOptions(io.vertx.core.impl.ConversionHelper.toJsonObject(options)) : null,
  responseHandler != null ? event -> responseHandler.handle(io.vertx.core.impl.ConversionHelper.fromObject(event)) : null));
 return j_receiver;
}
public static io.vertx.core.http.HttpClientRequest options(io.vertx.core.http.HttpClient j_receiver, java.util.Map<String, Object> options) {

代码示例来源：origin: vietj/vertx-http-proxy

startProxy(new SocketAddressImpl(8081, "localhost"));
Async latch = ctx.async();
client.headNow(8080, "localhost", "/img.jpg", resp1 -> {
 ctx.assertEquals(200, resp1.statusCode());
 resp1.bodyHandler(buff -> {