現在很多公司都是將數據返回一個json，而且很多第三方接口都是返回json數據，而且還需要使用到http協議，http協議是屬于為加密的協議，而https協議需要SSL證書，https是將用戶返回的信息加密處理，然而我們要獲取這些數據，就需要引入SSL證書。現在我提供兩個方法，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，如下：
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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，如下：
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public static JSONObject httpsRequest(String requestUrl, String requestMethod, String outputStr) { JSONObject jsonObject = null; StringBuffer buffer = new StringBuffer(); try { // 創建SSLContext對象，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對象中得到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(); // 當有數據需要提交時 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協議的區別在于
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// 創建SSLContext對象，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對象中得到SSLSocketFactory對象 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容 。還有，提示一下，如果復制中，缺失jar包，請自行下載
以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持服務器之家。
原文鏈接：http://www.cnblogs.com/wangtj-19/p/5889056.html
