public static JSONObject doPost(String reqUrl, String json)  throws NoSuchAlgorithmException,
        NoSuchProviderException, IOException,
        KeyManagementException {
    URL url = new URL(reqUrl);
    HttpsURLConnection httpsConn = (HttpsURLConnection) url.openConnection();
    httpsConn.setHostnameVerifier(new HostnameVerifier() {
        public boolean verify(String paramString, SSLSession paramSSLSession) {
            return true;
        }
    });

    //创建SSLContext对象，并使用我们指定的信任管理器初始化
    TrustManager tm = new X509TrustManager() {
        public void checkClientTrusted(X509Certificate[] paramArrayOfX509Certificate,
                                       String paramString) throws CertificateException {
        }

        public void checkServerTrusted(X509Certificate[] paramArrayOfX509Certificate,
                                       String paramString) throws CertificateException {
        }

        public X509Certificate[] getAcceptedIssuers() {
            return null;
        }
    };

    SSLContext sslContext = SSLContext.getInstance("SSL", "SunJSSE");
    sslContext.init(null, new TrustManager[] { tm }, new java.security.SecureRandom());

    //从上述SSLContext对象中得到SSLSocketFactory对象
    SSLSocketFactory ssf = sslContext.getSocketFactory();

    //创建HttpsURLConnection对象，并设置其SSLSocketFactory对象
    httpsConn.setSSLSocketFactory(ssf);

    httpsConn.setDoOutput(true);
    httpsConn.setRequestMethod("POST");
    httpsConn.setRequestProperty("Content-Type", "application/json;charset=UTF-8");
    httpsConn.setRequestProperty("Content-Length", String.valueOf(json.length()));

    OutputStreamWriter out = new OutputStreamWriter(httpsConn.getOutputStream(), "UTF-8");
    out.write(json);
    out.flush();
    out.close();

    BufferedReader reader = new BufferedReader(new InputStreamReader(
            httpsConn.getInputStream(), "UTF-8"));
    String tempLine = "";
    StringBuffer resultBuffer = new StringBuffer();
    while ((tempLine = reader.readLine()) != null) {
        resultBuffer.append(tempLine).append(System.getProperty("line.separator"));
    }
    System.out.println("resultBuffer:"+resultBuffer);
    JSONObject  response = JSONObject.fromObject(resultBuffer.toString());

    return response;
}