网络-httpclient调用https服务端绕过证书的方法

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();
        }
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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 POST
        connection.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;
    }
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