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Java获取http和https协议返回的json数据

2024-07-13 10:03:02
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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

以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持VeVb武林网。


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