Java调用有道翻译

package com.youdao; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.net.URL; import java.net.URLEncoder; import java.nio.charset.Charset; import java.security.MessageDigest; import java.util.Arrays; import java.util.HashMap; import java.util.List; import java.util.Map; import org.json.JSONArray; import org.json.JSONException; import org.json.JSONObject; public class YoudaoTran { private static final String UTF8 = "utf-8"; static String appKeyID = "6916ca241e90c93a"; static String appKey = "bsKAfowaMqPmDqgpZXvC5lNQLwmLcmHf"; public static void main(String[] args) { //String url = creatUrl("keep\nteacher\nchina","en","zh-CHS"); //System.out.println(url); try { String result = readJsonFromUrl("老师\n中国","zh-CHS","en"); String[] split = result.split("\n"); List<String> list = Arrays.asList(split); for (String string : list) { System.out.println(string); } System.out.println(list.size()); } catch (IOException e) { e.printStackTrace(); } catch (JSONException e) { e.printStackTrace(); } } /** * * @date 2017年5月19日 下午1:33:42 * @author S. Yichen * @param query 查询的词 多词用\n * @param from 原文语种可以为auto * @param to 必填 */ public static String readJsonFromUrl(String query,String from, String to ) throws IOException, JSONException { String url = creatUrl(query, from, to); InputStream is = new URL(url).openStream(); String str = null; StringBuilder result = new StringBuilder(); try { BufferedReader reader = new BufferedReader(new InputStreamReader(is, Charset.forName("UTF-8"))); while ((str = reader.readLine()) != null) { result.append(str).append("\n"); } JSONObject json = new JSONObject(result.toString()); //开发者自行处理错误，本示例失败返回为null String error_code = json.getString("errorCode"); if (!"0".equals(error_code)) { System.out.println("出错代码:" + error_code); //System.out.println("出错信息:" + json.getString("errorCode")); return null; } //获取返回翻译结果 JSONArray array = (JSONArray) json.get("translation"); StringBuffer text = new StringBuffer(); for (int i = 0; i < array.length(); i++) { //System.out.println(array.get(i)); //JSONObject dst = (JSONObject) array.get(i); //URLDecoder.decode(dst.getString("translation"), UTF8); text.append(array.get(i)+"\n"); } return text.toString(); } finally { is.close(); } } /** * 生成有道URL * @param 要搜索的词 * @param 源语言 * @param 目标语言 * @return */ public static String creatUrl(String query,String from,String to) { String salt = String.valueOf(System.currentTimeMillis()); String sign = md5(appKeyID + query + salt + appKey); Map<String, String> params = new HashMap<String,String>(); params.put("q", query); params.put("from", from); params.put("to", to); params.put("sign", sign); params.put("salt", salt); params.put("appKey", appKeyID); String urlStr = "https://openapi.youdao.com/api"; return getUrlWithQueryString(urlStr, params); } public static String createParam(String query,String from,String to) { String salt = String.valueOf(System.currentTimeMillis()); String sign = md5(appKeyID + query + salt + appKey); Map<String, String> params = new HashMap<String,String>(); params.put("q", query); params.put("from", from); params.put("to", to); params.put("sign", sign); params.put("salt", salt); params.put("appKey", appKeyID); String urlStr = ""; return getUrlWithQueryString(urlStr, params); } /** * 生成32位md5摘要 * @param str * @return */ public static String md5(String string) { if(string == null) { return null; } char hexDigits[] = {'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'}; byte [] btInput = string.getBytes(); try { /** 获得MD5摘要算法的 MessageDigest对象 **/ MessageDigest mdInst = MessageDigest.getInstance("MD5"); /** 使用指定的字节更新摘要 **/ mdInst.update(btInput); /** 获得密文 **/ byte []md = mdInst.digest(); /** 把密文转换成十六进制的字符串形式 **/ int j = md.length; char str[] = new char[j*2]; int k = 0; for(byte byte0 : md){ str[k++] = hexDigits[byte0 >>> 4 & 0xf]; str[k++] = hexDigits[byte0 & 0xf]; } return new String(str); } catch (Exception 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key continue; } if (i != 0) { builder.append('&'); } builder.append(key); builder.append('='); builder.append(encode(value)); i++; } return builder.toString(); } /** * 进行URL编码 * @param input * @return */ public static String encode(String input) { if (input == null) { return ""; } try { return URLEncoder.encode(input,"utf-8"); } catch (Exception e) { e.printStackTrace(); } return input; } }