Java獲取http和https協議返回的json數據

 

如今不少公司都是將數據返回一個json，並且不少第三方接口都是返回json數據，並且還須要使用到http協議，http協議是屬於爲加密的協議，而https協議須要SSL證書，https是將用戶返回的信息加密處理，然而咱們要獲取這些數據，就須要引入SSL證書。如今我提供兩個方法，幫助各位如何獲取http和https返回的數據。

獲取http協議的數據的方法，以下：

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);
            // 設置請求方式（GET/POST）
            httpUrlConn.setRequestMethod(requestMethod);

            if ("GET".equalsIgnoreCase(requestMethod))
                httpUrlConn.connect();
            // 將返回的輸入流轉換成字符串
            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協議的數據的方法，以下：

public static JSONObject httpsRequest(String requestUrl, String requestMethod, String outputStr) {
        JSONObject jsonObject = null;
        StringBuffer buffer = new StringBuffer();
        try {
            // 建立SSLContext對象，並使用咱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對象中獲得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);
            // 設置請求方式（GET/POST）
            httpUrlConn.setRequestMethod(requestMethod);

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

            // 當有數據須要提交時
            if (null != outputStr) {
                OutputStream outputStream = httpUrlConn.getOutputStream();
                // 注意編碼格式，防止中文亂碼
                outputStream.write(outputStr.getBytes("UTF-8"));
                outputStream.close();
            }

            // 將返回的輸入流轉換成字符串
            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

   // 建立SSLContext對象，並使用咱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對象中獲得SSLSocketFactory對象
            SSLSocketFactory ssf = sslContext.getSocketFactory();

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

你們有更好的方法歡迎留言分享，以上就是本次共享的內容 。還有，提示一下，若是複製中，缺失jar包，請自行下載，若是找不到，請給我留言，還有，程序是死的，人是活的，怎麼方便怎麼來