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java https json数据 Java获取http和https协议返回的json数据

java_阿杰 人气:0
想了解Java获取http和https协议返回的json数据的相关内容吗,java_阿杰在本文为您仔细讲解java https json数据的相关知识和一些Code实例,欢迎阅读和指正,我们先划重点:java,https,json数据,java返回json数据,下面大家一起来学习吧。

现在很多公司都是将数据返回一个json,而且很多第三方接口都是返回json数据,而且还需要使用到http协议,http协议是属于为加密的协议,而https协议需要SSL证书,https是将用户返回的信息加密处理,然而我们要获取这些数据,就需要引入SSL证书。现在我提供两个方法,帮助各位如何获取http和https返回的数据。

获取http协议的数据的方法,如下:

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

      URL url = new URL(requestUrl);
      // http协议传输
      HttpURLConnection httpUrlConn = (HttpURLConnection) url.openConnection();

      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();
      // 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 (Exception e) {
      e.printStackTrace();
    }
    return jsonObject;
  }

获取https协议的数据的方法,如下:

public static JSONObject httpsRequest(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 (null != 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;

  }

获取https协议的数据和获取http协议的区别在于

  // 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);

大家有更好的方法欢迎留言分享,以上就是本次共享的内容 。还有,提示一下,如果复制中,缺失jar包,请自行下载

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