Java httpClient连接池支持多线程高并发的实现

当采用HttpClient httpClient = HttpClients.createDefault() 实例化的时候。会导致Address already in use的异常。

信息: I/O exception (java.net.BindException) caught when processing request to {}->http:/ private static CloseableHttpClient getCloseableHttpClient() { CloseableHttpClient httpClient = HttpClients.custom() .setConnectionManager(poolConnManager) .setRetryHandler(httpRequestRetryHandler) .build(); return httpClient; } private static Map<String, Object> buildResultMap(CloseableHttpResponse response, HttpEntity entity) throws IOException { Map<String, Object> result; result = new HashMap<>(2); result.put(KEY_STATUS_CODE, response.getStatusLine().getStatusCode()); //status code if (entity != null) { result.put(KEY_CONTENT, EntityUtils.toString(entity, "UTF-8")); //message content } return result; } public static Map<String, Object> postJSON(String url, String message) { Map<String, Object> result = null; CloseableHttpClient httpClient = getCloseableHttpClient(); HttpPost httpPost = new HttpPost(url); CloseableHttpResponse response = null; try { httpPost.setHeader("Accept", "application/json;charset=UTF-8"); httpPost.setHeader("Content-Type", "application/json"); StringEntity stringEntity = new StringEntity(message); stringEntity.setContentType("application/json;charset=UTF-8"); httpPost.setEntity(stringEntity); response = httpClient.execute(httpPost); HttpEntity entity = response.getEntity(); result = buildResultMap(response, entity); } catch (Exception e) { e.printStackTrace(); } finally { if (response != null) { try { EntityUtils.consume(response.getEntity()); response.close(); } catch (IOException e) { e.printStackTrace(); } } } return result; } }