Java獲取http和https協議前往的json數據

如今很多公司都是將數據前往一個json，而且很多第三方接口都是前往json數據，而且還需求運用到http協議，http協議是屬於為加密的協議，而https協議需求SSL證書，https是將用戶前往的信息加密處置，但是我們要獲取這些數據，就需求引入SSL證書。如今我提供兩個辦法，協助各位如何獲取http和https前往的數據。

獲取http協議的數據的辦法，如下：

public static JSONObject httpRequest(String requestUrl, String requestMethod) {
    JSONObject jsonObject = null;
    StringBuffer buffer = new StringBuffer();
    try {

      URL url = new URL(requestUrl);
      // http協議傳輸
      HttpURLConnection httpUrlConn = (HttpURLConnection) url.openConnection();

      httpUrlConn.setDoOutput(true);
      httpUrlConn.setDoInput(true);
      httpUrlConn.setUseCaches(false);
      // 設置懇求方式（GET/POST）
      httpUrlConn.setRequestMethod(requestMethod);

      if ("GET".equalsIgnoreCase(requestMethod))
        httpUrlConn.connect();
      // 將前往的輸出流轉換成字符串
      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();
      // 釋放資源
      inputStream.close();
      inputStream = null;
      httpUrlConn.disconnect();
      jsonObject = JSONObject.fromObject(buffer.toString());
    } catch (Exception e) {
      e.printStackTrace();
    }
    return jsonObject;
  }

獲取https協議的數據的辦法，如下：

public static JSONObject httpsRequest(String requestUrl, String requestMethod, String outputStr) {
    JSONObject jsonObject = null;
    StringBuffer buffer = new StringBuffer();
    try {
      // 創立SSLContext對象，並運用我們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());
      // 從上述SSLContext對象中失掉SSLSocketFactory對象
      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);
      // 設置懇求方式（GET/POST）
      httpUrlConn.setRequestMethod(requestMethod);

      if ("GET".equalsIgnoreCase(requestMethod))
        httpUrlConn.connect();

      // 當無數據需求提交時
      if (null != outputStr) {
        OutputStream outputStream = httpUrlConn.getOutputStream();
        // 留意編碼格式，避免中文亂碼
        outputStream.write(outputStr.getBytes("UTF-8"));
        outputStream.close();
      }

      // 將前往的輸出流轉換成字符串
      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();
      // 釋放資源
      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;

  }

獲取https協議的數據和獲取http協議的區別在於

  // 創立SSLContext對象，並運用我們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());
      // 從上述SSLContext對象中失掉SSLSocketFactory對象
      SSLSocketFactory ssf = sslContext.getSocketFactory();

      URL url = new URL(requestUrl);
      HttpsURLConnection httpUrlConn = (HttpsURLConnection) url.openConnection();
      httpUrlConn.setSSLSocketFactory(ssf);

大家有更好的辦法歡送留言分享，以上就是本次共享的內容 。還有，提示一下，假如復制中，缺失jar包，請自行下載

以上就是本文的全部內容，希望對大家的學習有所協助，也希望大家多多支持。