Java获取http和https协议返回的json数据

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，如果找不到，请给我留言，还有，程序是死的，人是活的，怎么方便怎么来