public class HttpClientUtil { // utf-8字符编码 public static final String CHARSET_UTF_8 = "utf-8"; // HTTP内容类型。 public static final String CONTENT_TYPE_TEXT_HTML = "text/xml"; // HTTP内容类型。相当于form表单的形式，提交数据 public static final String CONTENT_TYPE_FORM_URL = "application/x-www-form-urlencoded"; // HTTP内容类型。相当于form表单的形式，提交数据 public static final String CONTENT_TYPE_JSON_URL = "application/json;charset=utf-8"; // 连接管理器 private static PoolingHttpClientConnectionManager pool; // 请求配置 private static volatile RequestConfig requestConfig; private static CloseableHttpClient getNewHttpClient() { CloseableHttpClient httpClient = HttpClients.custom() // 设置连接池管理 .setConnectionManager(pool) // 设置请求配置 .setDefaultRequestConfig(getRequestConfig()) // 设置重试次数 .setRetryHandler(new DefaultHttpRequestRetryHandler(0, false)).build(); return httpClient; } /** * 发送 post请求 * * @param httpUrl * 地址 */ public static String post(String httpUrl) { // 创建httpPost HttpPost httpPost = new HttpPost(httpUrl); return request(httpPost); } public static byte[] postRaw(String httpUrl) { // 创建httpPost HttpPost httpPost = new HttpPost(httpUrl); return requestRaw(httpPost); } /** * 发送 get请求 * * @param httpUrl */ public static String get(String httpUrl) { // 创建get请求 HttpGet httpGet = new HttpGet(httpUrl); return request(httpGet); } /** * 发送 post请求（带文件） * * @param httpUrl * 地址 * @param maps * 参数 * @param fileLists * 附件 */ public static String post(String httpUrl, Map<String, String> maps, List<File> fileLists, String fileName) { HttpPost httpPost = new HttpPost(httpUrl);// 创建httpPost MultipartEntityBuilder meBuilder = MultipartEntityBuilder.create(); if (maps != null) { for (String key : maps.keySet()) { meBuilder.addPart(key, new StringBody(maps.get(key), ContentType.TEXT_PLAIN)); } } if (fileLists != null) { for (File file : fileLists) { FileBody fileBody = new FileBody(file); meBuilder.addPart(fileName, fileBody); } } HttpEntity reqEntity = meBuilder.build(); httpPost.setEntity(reqEntity); return request(httpPost); } public static String post(String httpUrl, Map<String, String> maps, List<File> fileLists) { return post(httpUrl, maps, fileLists, "file"); } public static String post(String httpUrl, List<File> fileLists) { return post(httpUrl, Collections.emptyMap(), fileLists, "file"); } /** * 发送 post请求 * * @param httpUrl * 地址 * @param params * 参数(格式:key1=value1&key2=value2) * */ public static String post(String httpUrl, String params) { HttpPost httpPost = new HttpPost(httpUrl);// 创建httpPost try { // 设置参数 if (params != null && params.trim().length() > 0) { StringEntity stringEntity = new StringEntity(params, "UTF-8"); stringEntity.setContentType(CONTENT_TYPE_FORM_URL); httpPost.setEntity(stringEntity); } } catch (Exception e) { e.printStackTrace(); } return request(httpPost); } /** * 发送 post请求 * * @param maps * 参数 */ public static String post(String httpUrl, Map<String, String> maps) { String param = convertStringParamter(maps); return post(httpUrl, param); } /** * 发送 post请求 发送json数据 * * @param httpUrl * 地址 * @param content * * */ public static String post(String httpUrl, String content, String contentType) { // HttpPost httpPost = new HttpPost(httpUrl);// 创建httpPost // try { // // 设置参数 // if (StringUtils.isNotEmpty(content)) { // StringEntity stringEntity = new StringEntity(content, "UTF-8"); // stringEntity.setContentType(contentType); // httpPost.setEntity(stringEntity); // } // } catch (Exception e) { // e.printStackTrace(); // } // return request(httpPost); return new String(postRaw(httpUrl, content, contentType), StandardCharsets.UTF_8); } public static byte[] postRaw(String httpUrl, String content, String contentType) { HttpPost httpPost = new HttpPost(httpUrl);// 创建httpPost try { // 设置参数 if (StringUtils.isNotEmpty(content)) { StringEntity stringEntity = new StringEntity(content, "UTF-8"); stringEntity.setContentType(contentType); httpPost.setEntity(stringEntity); } } catch (Exception e) { e.printStackTrace(); } return requestRaw(httpPost); } /** * 发送 post请求 发送json数据 * * @param httpUrl * 地址 * @param paramsJson * 参数(格式 json) * */ public static String postJson(String httpUrl, String paramsJson) { return post(httpUrl, paramsJson, CONTENT_TYPE_JSON_URL); } public static byte[] postJsonRaw(String httpUrl, String paramsJson) { return postRaw(httpUrl, paramsJson, CONTENT_TYPE_JSON_URL); } /** * 发送 post请求 发送xml数据 * * @param url 地址 * @param paramsXml 参数(格式 Xml) * */ public static String postXml(String url, String paramsXml) { return post(url, paramsXml, CONTENT_TYPE_TEXT_HTML); } /** * 将map集合的键值对转化成：key1=value1&key2=value2 的形式 * * @param parameterMap * 需要转化的键值对集合 * @return 字符串 */ public static String convertStringParamter(Map parameterMap) { StringBuilder parameterBuffer = new StringBuilder(); if (parameterMap != null) { Iterator iterator = parameterMap.keySet().iterator(); String key = null; String value = null; while (iterator.hasNext()) { key = (String) iterator.next(); if (parameterMap.get(key) != null) { value = (String) parameterMap.get(key); } else { value = ""; } parameterBuffer.append(key).append("=").append(value); if (iterator.hasNext()) { parameterBuffer.append("&"); } } } return parameterBuffer.toString(); } /** * 发送请求 * * @param request * @return */ public static byte[] requestRaw(HttpRequestBase request) { CloseableHttpClient httpClient; CloseableHttpResponse response = null; // 响应内容 // String responseContent = null; byte[] rawResponse = null; try { // 创建默认的httpClient实例. httpClient = getNewHttpClient(); // 配置请求信息 request.setConfig(requestConfig); // 执行请求 response = httpClient.execute(request); // 得到响应实例 HttpEntity entity = response.getEntity(); // 可以获得响应头 // Header[] headers = response.getHeaders(HttpHeaders.CONTENT_TYPE); // for (Header header : headers) { // System.out.println(header.getName()); // } // 得到响应类型 // System.out.println(ContentType.getOrDefault(response.getEntity()).getMimeType()); // 判断响应状态 if (response.getStatusLine().getStatusCode() >= 300) { throw new Exception("HTTP Request is not success, Response code is " + response.getStatusLine().getStatusCode()); } if (HttpStatus.SC_OK == response.getStatusLine().getStatusCode()) { rawResponse = EntityUtils.toByteArray(entity); // responseContent = EntityUtils.toString(entity, CHARSET_UTF_8); EntityUtils.consume(entity); } } catch (Exception e) { e.printStackTrace(); } finally { try { // 释放资源 if (response != null) { response.close(); } } catch (IOException e) { e.printStackTrace(); } } return rawResponse; } private static String request(HttpRequestBase req) { return new String(requestRaw(req), StandardCharsets.UTF_8); } private static RequestConfig getRequestConfig() { if (requestConfig == null) { synchronized (HttpClientUtil.class) { if (requestConfig == null) { try { //System.out.println("初始化HttpClientTest~~~开始"); SSLContextBuilder builder = new SSLContextBuilder(); builder.loadTrustMaterial(null, new TrustSelfSignedStrategy()); SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory( builder.build()); // 配置同时支持 HTTP 和 HTPPS Registry<ConnectionSocketFactory> socketFactoryRegistry = RegistryBuilder .<ConnectionSocketFactory> create() .register("http", PlainConnectionSocketFactory.getSocketFactory()) .register("https", sslsf).build(); // 初始化连接管理器 pool = new PoolingHttpClientConnectionManager(socketFactoryRegistry); // 将最大连接数增加到200，实际项目最好从配置文件中读取这个值 pool.setMaxTotal(200); // 设置最大路由 pool.setDefaultMaxPerRoute(2); // 根据默认超时限制初始化requestConfig int socketTimeout = 10000; int connectTimeout = 10000; int connectionRequestTimeout = 10000; requestConfig = RequestConfig.custom() .setConnectionRequestTimeout(connectionRequestTimeout) .setSocketTimeout(socketTimeout).setConnectTimeout(connectTimeout) .build(); } catch (NoSuchAlgorithmException e) { e.printStackTrace(); } catch (KeyStoreException e) { e.printStackTrace(); } catch (KeyManagementException e) { e.printStackTrace(); } // 设置请求超时时间 requestConfig = RequestConfig.custom().setSocketTimeout(50000) .setConnectTimeout(50000).setConnectionRequestTimeout(50000).build(); } } } return requestConfig; } }
常量