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現(xiàn)在很多公司都是將數(shù)據(jù)返回一個(gè)json，而且很多第三方接口都是返回json數(shù)據(jù)，而且還需要使用到http協(xié)議，http協(xié)議是屬于為加密的協(xié)議，而https協(xié)議需要SSL證書(shū)，https是將用戶返回的信息加密處理，然而我們要獲取這些數(shù)據(jù)，就需要引入SSL證書(shū)。現(xiàn)在我提供兩個(gè)方法，幫助各位如何獲取http和https返回的數(shù)據(jù)。

獲取http協(xié)議的數(shù)據(jù)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協(xié)議傳輸
            HttpURLConnection httpUrlConn = (HttpURLConnection) url.openConnection();

            httpUrlConn.setDoOutput(true);
            httpUrlConn.setDoInput(true);
            httpUrlConn.setUseCaches(false);
            // 設(shè)置請(qǐng)求方式（GET/POST）
            httpUrlConn.setRequestMethod(requestMethod);

            if ("GET".equalsIgnoreCase(requestMethod))
                httpUrlConn.connect();
            // 將返回的輸入流轉(zhuǎn)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(xié)議的數(shù)據(jù)的方法，如下：

public static JSONObject httpsRequest(String requestUrl, String requestMethod, String outputStr) {
        JSONObject jsonObject = null;
        StringBuffer buffer = new StringBuffer();
        try {
            // 創(chuàng)建SSLContext對(duì)象，并使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(duì)象中得到SSLSocketFactory對(duì)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(shè)置請(qǐng)求方式（GET/POST）
            httpUrlConn.setRequestMethod(requestMethod);

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

            // 當(dāng)有數(shù)據(jù)需要提交時(shí)
            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(zhuǎn)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(xié)議的數(shù)據(jù)和獲取http協(xié)議的區(qū)別在于

   // 創(chuàng)建SSLContext對(duì)象，并使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(duì)象中得到SSLSocketFactory對(duì)象
            SSLSocketFactory ssf = sslContext.getSocketFactory();

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

大家有更好的方法歡迎留言分享，以上就是本次共享的內(nèi)容 。還有，提示一下，如果復(fù)制中，缺失jar包，請(qǐng)自行下載，如果找不到，請(qǐng)給我留言，還有，程序是死的，人是活的，怎么方便怎么來(lái)