SpringBoot開發微信公眾號（六）
阿新 • • 發佈：2019-01-31
import java.io.BufferedReader; import java.io.Closeable; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.UnsupportedEncodingException; import java.net.HttpURLConnection; import java.net.MalformedURLException; import java.net.URL; import java.net.URLEncoder; import java.security.KeyManagementException; import java.security.NoSuchAlgorithmException; import java.security.cert.CertificateException; import java.security.cert.X509Certificate; import java.util.Map; import javax.net.ssl.HttpsURLConnection; import javax.net.ssl.SSLContext; import javax.net.ssl.TrustManager; import javax.net.ssl.X509TrustManager; class HttpGet { protected static final int SOCKET_TIMEOUT = 10000; // 10S protected static final String GET = "GET"; public static String get(String host, Map<String, String> params) { try { // 設定SSLContext SSLContext sslcontext = SSLContext.getInstance("TLS"); sslcontext.init(null, new TrustManager[] { myX509TrustManager }, null); String sendUrl = getUrlWithQueryString(host, params); // System.out.println("URL:" + sendUrl); URL uri = new URL(sendUrl); // 建立URL物件 HttpURLConnection conn = (HttpURLConnection) uri.openConnection(); if (conn instanceof HttpsURLConnection) { ((HttpsURLConnection) conn).setSSLSocketFactory(sslcontext.getSocketFactory()); } conn.setConnectTimeout(SOCKET_TIMEOUT); // 設定相應超時 conn.setRequestMethod(GET); int statusCode = conn.getResponseCode(); if (statusCode != HttpURLConnection.HTTP_OK) { System.out.println("Http錯誤碼：" + statusCode); } // 讀取伺服器的資料 InputStream is = conn.getInputStream(); BufferedReader br = new BufferedReader(new InputStreamReader(is,"utf-8")); StringBuilder builder = new StringBuilder(); String line = null; while ((line = br.readLine()) != null) { builder.append(line); } String text = builder.toString(); close(br); // 關閉資料流 close(is); // 關閉資料流 conn.disconnect(); // 斷開連線 return text; } catch (MalformedURLException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } catch (KeyManagementException e) { e.printStackTrace(); } catch (NoSuchAlgorithmException e) { e.printStackTrace(); } return null; } public static String getUrlWithQueryString(String url, Map<String, String> params) { if (params == null) { return url; } StringBuilder builder = new StringBuilder(url); if (url.contains("?")) { builder.append("&"); } else { builder.append("?"); } int i = 0; for (String key : params.keySet()) { String value = params.get(key); if (value == null) { // 過濾空的key continue; } if (i != 0) { builder.append('&'); } builder.append(key); builder.append('='); builder.append(encode(value)); i++; } return builder.toString(); } protected static void close(Closeable closeable) { if (closeable != null) { try { closeable.close(); } catch (IOException e) { e.printStackTrace(); } } } /** * 對輸入的字串進行URL編碼, 即轉換為%20這種形式 * * @param input 原文 * @return URL編碼. 如果編碼失敗, 則返回原文 */ public static String encode(String input) { if (input == null) { return ""; } try { return URLEncoder.encode(input, "utf-8"); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } return input; } private static TrustManager myX509TrustManager = new X509TrustManager() { @Override public X509Certificate[] getAcceptedIssuers() { return null; } @Override public void checkServerTrusted(X509Certificate[] chain, String authType) throws CertificateException { } @Override public void checkClientTrusted(X509Certificate[] chain, String authType) throws CertificateException { } }; }
import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.IOException; import java.io.InputStream; import java.security.MessageDigest; import java.security.NoSuchAlgorithmException; /** * MD5編碼相關的類 * * @author wangjingtao * */ public class MD5 { // 首先初始化一個字元陣列，用來存放每個16進位制字元 private static final char[] hexDigits = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' }; /** * 獲得一個字串的MD5值 * * @param input 輸入的字串 * @return 輸入字串的MD5值 * */ public static String md5(String input) { if (input == null) return null; try { // 拿到一個MD5轉換器（如果想要SHA1引數換成”SHA1”） MessageDigest messageDigest = MessageDigest.getInstance("MD5"); // 輸入的字串轉換成位元組陣列 byte[] inputByteArray = input.getBytes("utf-8"); // inputByteArray是輸入字串轉換得到的位元組陣列 messageDigest.update(inputByteArray); // 轉換並返回結果，也是位元組陣列，包含16個元素 byte[] resultByteArray = messageDigest.digest(); // 字元陣列轉換成字串返回 return byteArrayToHex(resultByteArray); } catch (Exception e) { return null; } } /** * 獲取檔案的MD5值 * * @param file * @return */ public static String md5(File file) { try { if (!file.isFile()) { System.err.println("檔案" + file.getAbsolutePath() + "不存在或者不是檔案"); return null; } FileInputStream in = new FileInputStream(file); String result = md5(in); in.close(); return result; } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } return null; } public static String md5(InputStream in) { try { MessageDigest messagedigest = MessageDigest.getInstance("MD5"); byte[] buffer = new byte[1024]; int read = 0; while ((read = in.read(buffer)) != -1) { messagedigest.update(buffer, 0, read); } in.close(); String result = byteArrayToHex(messagedigest.digest()); return result; } catch (NoSuchAlgorithmException e) { e.printStackTrace(); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } return null; } private static String byteArrayToHex(byte[] byteArray) { // new一個字元陣列，這個就是用來組成結果字串的（解釋一下：一個byte是八位二進位制，也就是2位十六進位制字元（2的8次方等於16的2次方）） char[] resultCharArray = new char[byteArray.length * 2]; // 遍歷位元組陣列，通過位運算（位運算效率高），轉換成字元放到字元陣列中去 int index = 0; for (byte b : byteArray) { resultCharArray[index++] = hexDigits[b >>> 4 & 0xf]; resultCharArray[index++] = hexDigits[b & 0xf]; } // 字元陣列組合成字串返回 return new String(resultCharArray); } }
import java.util.HashMap; import java.util.List; import java.util.Map; import net.sf.json.JSONObject; public class TransApi { //百度翻譯的介面地址 private static final String TRAN_API_URL = "http://api.fanyi.baidu.com/api/trans/vip/translate"; //百度翻譯開發者appid private static final String APP_ID = "你自己的app_Id"; //開發者祕鑰 private static final String SECURITY_KEY = "你自己的祕鑰"; //翻譯源自動識別 private static final String FROM = "auto"; //翻譯結果語言 自動識別 private static final String TO ="auto"; /** * 獲取翻譯結果 * @param query * @return */ public static String getTransResult(String query) { Map<String, String> params = buildParams(query); String resultMap = HttpGet.get(TRAN_API_URL, params); JSONObject json = JSONObject.fromObject(resultMap); StringBuffer buffer = new StringBuffer(); //儲存翻譯後的結果 List<Map> list = (List<Map>) json.get("trans_result"); for (int i = 0; i < list.size(); i++) { buffer.append(list.get(i).get("dst")); } return buffer.toString(); } private static Map<String, String> buildParams(String query) { Map<String, String> params = new HashMap<String, String>(); params.put("q", query); params.put("from", FROM); params.put("to", TO); params.put("appid", APP_ID); // 隨機數 String salt = String.valueOf(System.currentTimeMillis()); params.put("salt", salt); // 簽名 String src = APP_ID + query + salt + SECURITY_KEY; // 加密前的原文 params.put("sign", MD5.md5(src)); return params; } }