实验一：百度机器翻译SDK实验--代码及遇到的问题
首先这是代码：具体的操作步骤下面一篇
窗口的：
package baidu; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPanel; public class translate { public static void main(String[] args) { //jfram指的是一个窗口 // myframe frame=new myframe();\ //子类继承父类所以可以直接声明 JFrame fram=new fram(); //当关闭窗口时候退出整个程序 fram.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); //设置窗口大小宽高 fram.setSize(400,300); //显示窗口 fram.setVisible(true); } }
package baidu; import java.text.SimpleDateFormat; import java.util.Date; import javax.swing.JButton; import javax.swing.JCheckBox; import javax.swing.JComboBox; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPanel; import javax.swing.JTextField; import org.json.JSONArray; import org.json.JSONObject; import baidu.GsonUtils; import com.alibaba.fastjson.JSON; import com.alibaba.fastjson.JSONException; import baidu.main; public class fram extends JFrame{ // 在平台申请的APP_ID 详见 http://api.fanyi.baidu.com/api/trans/product/desktop?req=developer private static final String APP_ID = "--------------------"; private static final String SECURITY_KEY = "------------"; TransApi api = new TransApi(APP_ID, SECURITY_KEY); //放到父类一个属性，这样的话下面的btn1这个事件也可以访问 String from="auto"; String to="en"; JPanel root =new JPanel(); JButton button=new JButton("翻译"); JLabel timelabel=new JLabel("翻译结果在这里展示"); JTextField textfield=new JTextField(20); JCheckBox check=new JCheckBox("翻译成英文"); JCheckBox check2=new JCheckBox("翻译成中文"); public fram() { this.setContentPane(root); root.add(button); root.add(textfield); root.add(timelabel); root.add(check); root.add(check2); check.setSelected(true); button.addActionListener((e)->{ test(); }); //点击复选框事件被启用 check.addActionListener((e)->{ en(); same(); }); check2.addActionListener((e)->{ zhong(); same(); }); } //翻译成英文 public void en() { from="auto"; to="en"; } //翻译成中文 public void zhong() { from="en"; to="auto"; } //其实这里使用单选框更合理嘻嘻算了写一个不能同事选的 public void same() { if(check.isSelected()==true) { check2.setSelected(false); }else if(check2.isSelected()==true) { check.setSelected(false); } } //取出来用书输入的值 private void test() { String text=textfield.getText(); /**** JSONObject jsonObject = null; try { jsonObject = new JSONObject(api.getTransResult(text, from, to)); } catch (JSONException e) { e.printStackTrace(); } String data=jsonObject.optString(api.getTransResult(text, from, to), "trans_result"); // jsonObject = new JSONObject(data); //获取deptCode String deptCode= jsonObject.optString(data , "dst"); *****/ // String jsonStr = "{ \"from\": \"en\", \"to\": \"zh\", \"trans_result\": [ { \"src\": \"hello\", \"dst\": \"你好\" } ] }"; String jsonStr=api.getTransResult(text, from, to); JSONObject jsonObject1 = new JSONObject(jsonStr); JSONArray transResultArray = jsonObject1.getJSONArray("trans_result"); JSONObject transResultObj = transResultArray.getJSONObject(0); String dst = transResultObj.getString("dst"); timelabel.setText(dst); } }
百度上的压缩包中的：
package baidu; import java.util.HashMap; import java.util.Map; public class TransApi { private static final String TRANS_API_HOST = "http://api.fanyi.baidu.com/api/trans/vip/translate"; private String appid; private String securityKey; public TransApi(String appid, String securityKey) { this.appid = appid; this.securityKey = securityKey; } public String getTransResult(String query, String from, String to) { Map<String, String> params = buildParams(query, from, to); return HttpGet.get(TRANS_API_HOST, params); } private Map<String, String> buildParams(String query, String from, String to) { Map<String, String> params = new HashMap<String, String>(); params.put("q", query); params.put("from", from); params.put("to", to); params.put("appid", appid); // 随机数 String salt = String.valueOf(System.currentTimeMillis()); params.put("salt", salt); // 签名 String src = appid + query + salt + securityKey; // 加密前的原文 params.put("sign", MD5.md5(src)); return params; } }
/* * Copyright (C) 2017 Baidu, Inc. All Rights Reserved. */ package baidu; import com.alibaba.fastjson.JSONException; import com.google.gson.Gson; import com.google.gson.GsonBuilder; import com.google.gson.JsonParseException; import java.lang.reflect.Type; import org.json.JSONObject; /** * Json工具类. */ public class GsonUtils { private static Gson gson = new GsonBuilder().create(); public static String toJson(Object value) { return gson.toJson(value); } public static <T> T fromJson(String json, Class<T> classOfT) throws JsonParseException { return gson.fromJson(json, classOfT); } public static <T> T fromJson(String json, Type typeOfT) throws JsonParseException { return (T) gson.fromJson(json, typeOfT); } public static String getString(String data, String result) { JSONObject jsonObject = null; try { jsonObject = new JSONObject(data); } catch (JSONException e) { e.printStackTrace(); } return jsonObject.optString(result, null); } }
package baidu; 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; public 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 { // 设置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); // 创建URL对象 HttpURLConnection conn = (HttpURLConnection) uri.openConnection(); if (conn instanceof HttpsURLConnection) { ((HttpsURLConnection) conn).setSSLSocketFactory(sslcontext.getSocketFactory()); } conn.setConnectTimeout(SOCKET_TIMEOUT); // 设置相应超时 conn.setRequestMethod(GET); int statusCode = conn.getResponseCode(); if (statusCode != HttpURLConnection.HTTP_OK) { System.out.println("Http错误码：" + statusCode); } // 读取服务器的数据 InputStream is = conn.getInputStream(); BufferedReader br = new BufferedReader(new InputStreamReader(is)); StringBuilder builder = new StringBuilder(); String line = null; while ((line = br.readLine()) != null) { builder.append(line); } String text = builder.toString(); close(br); // 关闭数据流 close(is); // 关闭数据流 conn.disconnect(); // 断开连接 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) { // 过滤空的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(); } } } /** * 对输入的字符串进行URL编码, 即转换为%20这种形式 * * @param input 原文 * @return URL编码. 如果编码失败, 则返回原文 */ 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 { } }; }
package baidu; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.IOException; import java.io.InputStream; import java.io.UnsupportedEncodingException; import java.security.MessageDigest; import java.security.NoSuchAlgorithmException; /** * MD5编码相关的类 * * @author wangjingtao * */ public class MD5 { // 首先初始化一个字符数组，用来存放每个16进制字符 private static final char[] hexDigits = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' }; /** * 获得一个字符串的MD5值 * * @param input 输入的字符串 * @return 输入字符串的MD5值 * */ public static String md5(String input) { if (input == null) return null; try { // 拿到一个MD5转换器（如果想要SHA1参数换成”SHA1”） MessageDigest messageDigest = MessageDigest.getInstance("MD5"); // 输入的字符串转换成字节数组 byte[] inputByteArray = null; try { inputByteArray = input.getBytes("utf-8"); } catch (UnsupportedEncodingException e) { // TODO Auto-generated catch block e.printStackTrace(); } // inputByteArray是输入字符串转换得到的字节数组 messageDigest.update(inputByteArray); // 转换并返回结果，也是字节数组，包含16个元素 byte[] resultByteArray = messageDigest.digest(); // 字符数组转换成字符串返回 return byteArrayToHex(resultByteArray); } catch (NoSuchAlgorithmException e) { return null; } } /** * 获取文件的MD5值 * * @param file * @return */ public static String md5(File file) { try { if (!file.isFile()) { System.err.println("文件" + file.getAbsolutePath() + "不存在或者不是文件"); 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一个字符数组，这个就是用来组成结果字符串的（解释一下：一个byte是八位二进制，也就是2位十六进制字符（2的8次方等于16的2次方）） char[] resultCharArray = new char[byteArray.length * 2]; // 遍历字节数组，通过位运算（位运算效率高），转换成字符放到字符数组中去 int index = 0; for (byte b : byteArray) { resultCharArray[index++] = hexDigits[b >>> 4 & 0xf]; resultCharArray[index++] = hexDigits[b & 0xf]; } // 字符数组组合成字符串返回 return new String(resultCharArray); } }
