httpclient调用https服务端绕过证书的方法

在日常开发或者测试中，通常会遇到需要用httpclient客户端调用对方http是服务器的场景，由于没有证书，所以直接是无法调用的。采用下面的方法可以绕过证书验证：

TrustManager[] trustAllCerts = new TrustManager[]{new X509TrustManager() {public java.security.cert.X509Certificate[] getAcceptedIssuers() {return null;}public void checkClientTrusted(java.security.cert.X509Certificate[] certs, String authType) {}public void checkServerTrusted(java.security.cert.X509Certificate[] certs, String authType) {}}};// 创建一个SSL上下文，设置信任管理器try {SSLContext sc = SSLContext.getInstance("TLS");sc.init(null, trustAllCerts, new java.security.SecureRandom());HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());} catch (Exception e) {e.printStackTrace();}

完整代码：

 public static String sendHttpPostRequest(String url, JSONObject param) throws Exception {TrustManager[] trustAllCerts = new TrustManager[]{new X509TrustManager() {public java.security.cert.X509Certificate[] getAcceptedIssuers() {return null;}public void checkClientTrusted(java.security.cert.X509Certificate[] certs, String authType) {}public void checkServerTrusted(java.security.cert.X509Certificate[] certs, String authType) {}}};// 创建一个SSL上下文，设置信任管理器try {SSLContext sc = SSLContext.getInstance("TLS");sc.init(null, trustAllCerts, new java.security.SecureRandom());HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());} catch (Exception e) {e.printStackTrace();}URL apiUrl = new URL(url);HttpURLConnection connection = (HttpURLConnection) apiUrl.openConnection();// 设置请求方法为 POSTconnection.setRequestMethod("POST");connection.setDoOutput(true);// 添加请求头connection.setRequestProperty("Content-Type", "application/json");//connection.setRequestProperty("", accessToken);// 发送 POST 请求必须设置如下两行OutputStream outputStream = connection.getOutputStream();OutputStreamWriter outputStreamWriter = new OutputStreamWriter(outputStream, StandardCharsets.UTF_8);outputStreamWriter.write(param.toJSONString());outputStreamWriter.flush();outputStreamWriter.close();int responseCode = connection.getResponseCode();System.out.println("Response Code: " + responseCode);// 创建一个 BufferedReader 来读取服务器的响应BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(connection.getInputStream()));StringBuffer response = new StringBuffer();String inputLine;while ((inputLine = bufferedReader.readLine()) != null) {response.append(inputLine);}bufferedReader.close();System.out.println("Response: " + response.toString());return null;}