处理了http 的get和post的请求，分别支持同步处理，异步处理两种方式下见代码。

@Slf4jpublic class HttpUtils { /** * 同步请求http请求 不推荐 * * @param url * @return */ public static byte[] httpGetSync(String url) { HttpGet httpGet = new HttpGet(url); try (CloseableHttpClient httpclient = HttpClients.createDefault()) { CloseableHttpResponse response = httpclient.execute(httpGet); if (HttpStatus.SC_OK == response.getStatusLine().getStatusCode()) { HttpEntity entity = response.getEntity(); return Utils.inputStream2Bytes(entity.getContent()); } else { log.error("NetUrls httpGetSync {} url {} ", response.getStatusLine().getStatusCode(), url); } } catch (IOException exception) { log.error("reInitExchangeConfig request exception {}", exception); } return null; } /** * 指定执行器的http请求 推荐 * * @param url * @param exec * @param callback */ public static void httpGet(String url, Executor exec, NetResponse callback) { getHttpExec().execute(() -> { byte[] bytes = httpGetSync(url); exec.execute(() -> { callback.response(bytes); }); }); } /** * httpPost 请求异步推荐 * * @param url * @param data * @param contentType * @return */ public static byte[] httpPostSync(String url, String data, ContentType contentType) { CloseableHttpClient httpClient = HttpClients.createDefault(); HttpPost httpPost = new HttpPost(url); httpPost.setEntity(new StringEntity(data, contentType)); try (CloseableHttpResponse response = httpClient.execute(httpPost)) { if (HttpStatus.SC_OK == response.getStatusLine().getStatusCode()) { HttpEntity entity = response.getEntity(); return Utils.inputStream2Bytes(entity.getContent()); } else { log.warn("HTTP POST Failure {}, {}, {}", url, data, response.getStatusLine().getStatusCode()); } } catch (IOException exception) { log.warn("HTTP POST Exception", exception); } return null; } /** * httpPost 请求异步推荐 * * @param url * @param data * @param contentType * @param exec * @param callback */ public static void httpPost(String url, String data, ContentType contentType, Executor exec, NetResponse callback) { getHttpExec().execute(() -> { byte[] bytes = httpPostSync(url, data, contentType); exec.execute(() -> { callback.response(bytes); }); }); } /** * 不指定执行器的http请求 不推荐 * * @param url * @param callback */ public static void httpGetAsync(String url, NetResponse callback) { getHttpExec().execute(() -> { byte[] bytes = httpGetSync(url); callback.response(bytes); }); } /** * 不指定执行器的http请求 不推荐 * * @param url * @param callback */ public static void httpGetAsync(String url, String data, ContentType contentType, NetResponse callback) { getHttpExec().execute(() -> { byte[] bytes = httpPostSync(url, data, contentType); callback.response(bytes); }); } private static ExecutorService httpExec; private static ExecutorService getHttpExec() { if (httpExec == null) { synchronized (HttpUtils.class) { if (httpExec == null) { httpExec = Executors.newCachedThreadPool(); } } } return httpExec; } public interface NetResponse { void response(byte[] response); }}