发起https和http请求

调用微信提供的相关接口时，使用到了如何发起https请求，记录一下：

/**     * 发起https请求并获取结果     *     * @param requestUrl 请求地址     * @param requestMethod 请求方式（GET、POST）     * @param outputStr 提交的数据     * @return JSONObject(通过JSONObject.get(key)的方式获取json对象的属性值)     */    public static JSONObject httpRequest(String requestUrl, String requestMethod, String outputStr) {        JSONObject jsonObject = null;        StringBuffer buffer = new StringBuffer();        try {            // 创建SSLContext对象，并使用我们指定的信任管理器初始化            TrustManager[] tm = { new MyX509TrustManager() };            SSLContext sslContext = SSLContext.getInstance("SSL", "SunJSSE");            sslContext.init(null, tm, new java.security.SecureRandom());            // 从上述SSLContext对象中得到SSLSocketFactory对象            SSLSocketFactory ssf = sslContext.getSocketFactory();            URL url = new URL(requestUrl);            HttpsURLConnection httpUrlConn = (HttpsURLConnection) url.openConnection();            httpUrlConn.setSSLSocketFactory(ssf);            httpUrlConn.setDoOutput(true);            httpUrlConn.setDoInput(true);            httpUrlConn.setUseCaches(false);            // 设置请求方式（GET/POST）            httpUrlConn.setRequestMethod(requestMethod);            if ("GET".equalsIgnoreCase(requestMethod))                httpUrlConn.connect();            // 当有数据需要提交时            if (!StringUtil.isNullOrWhiteSpace(outputStr)) {                OutputStream outputStream = httpUrlConn.getOutputStream();                // 注意编码格式，防止中文乱码                outputStream.write(outputStr.getBytes("UTF-8"));                outputStream.close();            }            // 将返回的输入流转换成字符串            InputStream inputStream = httpUrlConn.getInputStream();            InputStreamReader inputStreamReader = new InputStreamReader(inputStream, "utf-8");            BufferedReader bufferedReader = new BufferedReader(inputStreamReader);            String str = null;            while ((str = bufferedReader.readLine()) != null) {                buffer.append(str);            }            bufferedReader.close();            inputStreamReader.close();            // 释放资源            inputStream.close();            inputStream = null;            httpUrlConn.disconnect();            jsonObject = JSONObject.fromObject(buffer.toString());        } catch (ConnectException ce) {            log.error("Weixin server connection timed out.");        } catch (Exception e) {            log.error("https request error:{}", e);        }        return jsonObject;    }

同时，记录下如何发起普通的http请求，如下：

    public static String loadJson (String url) {          StringBuilder json = new StringBuilder();          try {              URL urlObject = new URL(url);              URLConnection uc = urlObject.openConnection();              BufferedReader in = new BufferedReader(new InputStreamReader(uc.getInputStream()));              String inputLine = null;              while ( (inputLine = in.readLine()) != null) {                  json.append(inputLine);              }              in.close();          } catch (MalformedURLException e) {              e.printStackTrace();          } catch (IOException e) {              e.printStackTrace();          }          return json.toString();      }