因为工作产品需要，需要APP 开发翻译功能。

由于谷歌翻译API进行收费，

搜索了一下，网上有2中方式实现。

1.破解生成token规律。

2.用httpclient访问web，然后解析

两种方式都比较麻烦。

经过google发现还有更简单的方式：

"https://translate.googleapis.com/translate_a/single?client=gtx&sl={fromCulture}&tl={toCulture}&dt=t&q={text}" 

client ,dt 两个参数不要修改，不然无法正常工作

sl 为要翻译的文本语言，如果不知道，可以为auto

tl 为目标语言。必须指定

q 为要翻译的文本。注意中文的 UrlEncoded 问题

写成工具类可以如下：

import com.alibaba.fastjson.JSONArray;import org.apache.http.HttpEntity;import org.apache.http.NameValuePair;import org.apache.http.client.entity.UrlEncodedFormEntity;import org.apache.http.client.methods.CloseableHttpResponse;import org.apache.http.client.methods.HttpPost;import org.apache.http.impl.client.CloseableHttpClient;import org.apache.http.impl.client.HttpClients;import org.apache.http.message.BasicNameValuePair;import org.apache.http.util.EntityUtils;import java.io.IOException;import java.io.UnsupportedEncodingException;import java.nio.charset.Charset;import java.util.*;public class GoogleTranslateTest {    public static void main(String args[]) throws Exception {        System.out.println("-----test-----");        String txt="永和九年，岁在癸丑，暮春之初，会于会稽山阴之兰亭，修禊事也。群贤毕至，少长咸集。此地有崇山峻岭，茂林修竹；又有清流激湍，映带左右，引以为流觞曲水，列坐其次。虽无丝竹管弦之盛，一觞一咏，亦足以畅叙幽情。是日也，天朗气清，惠风和畅，仰观宇宙之大，俯察品类之盛，所以游目骋怀，足以极视听之娱，信可乐也。\n" +                "夫人之相与，俯仰一世，或取诸怀抱，悟言一室之内；或因寄所托，放浪形骸之外。虽趣舍万殊，静躁不同，当其欣于所遇，暂得于己，快然自足，不知老之将至。及其所之既倦，情随事迁，感慨系之矣。向之所欣，俯仰之间，已为陈迹，犹不能不以之兴怀。况修短随化，终期于尽。古人云：“死生亦大矣。”岂不痛哉！(不知老之将至 一作：曾不知老之将至)\n" +                "每览昔人兴感之由，若合一契，未尝不临文嗟悼，不能喻之于怀。固知一死生为虚诞，齐彭殇为妄作。后之视今，亦犹今之视昔。悲夫！故列叙时人，录其所述，虽世殊事异，所以兴怀，其致一也。后之览者，亦将有感于斯文。";        GT g = GT.getInstance();        System.out.println( g.translateText(txt,"auto","en"));        System.out.println( g.translateText("谁能说支持不支持","auto","en"));    }}/** * 谷歌翻译类 */class GT {    private static final String PATH="https://translate.googleapis.com/translate_a/single"; //地址    private static final String CLIENT="gtx";    private static final String USER_AGENT="Mozilla/5.0";//"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.113 Safari/537.36";    private static final Map
    
      LANGUAGE_MAP=new HashMap();    private static GT _instance = null;    /**     * 获取单例     * @return     */    public static GT getInstance() {        if( null == _instance){            _instance = new GT();            _instance.init();        }        return _instance;    }    /**     * 初始化语言类     */    private void init(){        LANGUAGE_MAP.put("auto","Automatic");        LANGUAGE_MAP.put("af","Afrikaans");        LANGUAGE_MAP.put("sq","Albanian");        LANGUAGE_MAP.put("am","Amharic");        LANGUAGE_MAP.put("ar","Arabic");        LANGUAGE_MAP.put("hy","Armenian");        LANGUAGE_MAP.put("az","Azerbaijani");        LANGUAGE_MAP.put("eu","Basque");        LANGUAGE_MAP.put("be","Belarusian");        LANGUAGE_MAP.put("bn","Bengali");        LANGUAGE_MAP.put("bs","Bosnian");        LANGUAGE_MAP.put("bg","Bulgarian");        LANGUAGE_MAP.put("ca","Catalan");        LANGUAGE_MAP.put("ceb","Cebuano");        LANGUAGE_MAP.put("ny","Chichewa");        LANGUAGE_MAP.put("zh_cn","Chinese Simplified");        LANGUAGE_MAP.put("zh_tw","Chinese Traditional");        LANGUAGE_MAP.put("co","Corsican");        LANGUAGE_MAP.put("hr","Croatian");        LANGUAGE_MAP.put("cs","Czech");        LANGUAGE_MAP.put("da","Danish");        LANGUAGE_MAP.put("nl","Dutch");        LANGUAGE_MAP.put("en","English");        LANGUAGE_MAP.put("eo","Esperanto");        LANGUAGE_MAP.put("et","Estonian");        LANGUAGE_MAP.put("tl","Filipino");        LANGUAGE_MAP.put("fi","Finnish");        LANGUAGE_MAP.put("fr","French");        LANGUAGE_MAP.put("fy","Frisian");        LANGUAGE_MAP.put("gl","Galician");        LANGUAGE_MAP.put("ka","Georgian");        LANGUAGE_MAP.put("de","German");        LANGUAGE_MAP.put("el","Greek");        LANGUAGE_MAP.put("gu","Gujarati");        LANGUAGE_MAP.put("ht","Haitian Creole");        LANGUAGE_MAP.put("ha","Hausa");        LANGUAGE_MAP.put("haw","Hawaiian");        LANGUAGE_MAP.put("iw","Hebrew");        LANGUAGE_MAP.put("hi","Hindi");        LANGUAGE_MAP.put("hmn","Hmong");        LANGUAGE_MAP.put("hu","Hungarian");        LANGUAGE_MAP.put("is","Icelandic");        LANGUAGE_MAP.put("ig","Igbo");        LANGUAGE_MAP.put("id","Indonesian");        LANGUAGE_MAP.put("ga","Irish");        LANGUAGE_MAP.put("it","Italian");        LANGUAGE_MAP.put("ja","Japanese");        LANGUAGE_MAP.put("jw","Javanese");        LANGUAGE_MAP.put("kn","Kannada");        LANGUAGE_MAP.put("kk","Kazakh");        LANGUAGE_MAP.put("km","Khmer");        LANGUAGE_MAP.put("ko","Korean");        LANGUAGE_MAP.put("ku","Kurdish (Kurmanji)");        LANGUAGE_MAP.put("ky","Kyrgyz");        LANGUAGE_MAP.put("lo","Lao");        LANGUAGE_MAP.put("la","Latin");        LANGUAGE_MAP.put("lv","Latvian");        LANGUAGE_MAP.put("lt","Lithuanian");        LANGUAGE_MAP.put("lb","Luxembourgish");        LANGUAGE_MAP.put("mk","Macedonian");        LANGUAGE_MAP.put("mg","Malagasy");        LANGUAGE_MAP.put("ms","Malay");        LANGUAGE_MAP.put("ml","Malayalam");        LANGUAGE_MAP.put("mt","Maltese");        LANGUAGE_MAP.put("mi","Maori");        LANGUAGE_MAP.put("mr","Marathi");        LANGUAGE_MAP.put("mn","Mongolian");        LANGUAGE_MAP.put("my","Myanmar (Burmese)");        LANGUAGE_MAP.put("ne","Nepali");        LANGUAGE_MAP.put("no","Norwegian");        LANGUAGE_MAP.put("ps","Pashto");        LANGUAGE_MAP.put("fa","Persian");        LANGUAGE_MAP.put("pl","Polish");        LANGUAGE_MAP.put("pt","Portuguese");        LANGUAGE_MAP.put("ma","Punjabi");        LANGUAGE_MAP.put("ro","Romanian");        LANGUAGE_MAP.put("ru","Russian");        LANGUAGE_MAP.put("sm","Samoan");        LANGUAGE_MAP.put("gd","Scots Gaelic");        LANGUAGE_MAP.put("sr","Serbian");        LANGUAGE_MAP.put("st","Sesotho");        LANGUAGE_MAP.put("sn","Shona");        LANGUAGE_MAP.put("sd","Sindhi");        LANGUAGE_MAP.put("si","Sinhala");        LANGUAGE_MAP.put("sk","Slovak");        LANGUAGE_MAP.put("sl","Slovenian");        LANGUAGE_MAP.put("so","Somali");        LANGUAGE_MAP.put("es","Spanish");        LANGUAGE_MAP.put("su","Sundanese");        LANGUAGE_MAP.put("sw","Swahili");        LANGUAGE_MAP.put("sv","Swedish");        LANGUAGE_MAP.put("tg","Tajik");        LANGUAGE_MAP.put("ta","Tamil");        LANGUAGE_MAP.put("te","Telugu");        LANGUAGE_MAP.put("th","Thai");        LANGUAGE_MAP.put("tr","Turkish");        LANGUAGE_MAP.put("uk","Ukrainian");        LANGUAGE_MAP.put("ur","Urdu");        LANGUAGE_MAP.put("uz","Uzbek");        LANGUAGE_MAP.put("vi","Vietnamese");        LANGUAGE_MAP.put("cy","Welsh");        LANGUAGE_MAP.put("xh","Xhosa");        LANGUAGE_MAP.put("yi","Yiddish");        LANGUAGE_MAP.put("yo","Yoruba");        LANGUAGE_MAP.put("zu","Zulu");    }    /**     * 判断语言是否支持     * @param language     * @return     */    public boolean isSupport(String language){        if( null == LANGUAGE_MAP.get( language )){            return false;        }        return true;    }    /** 获取 语言代码     * ISO 639-1 code     * @param desiredLang 语言     * @return 如果返回null则标示不支持     */    public String getCode(String desiredLang){        if( null != LANGUAGE_MAP.get(desiredLang)){            return desiredLang;        }        String tmp = desiredLang.toLowerCase();        for(Map.Entry
     
       enter : LANGUAGE_MAP.entrySet() ){            if( enter.getValue().equals( tmp)){                return enter.getKey();            }        }        return null;    }    /**     * 翻译文本     * @param text  文本内容     * @param sourceLang  文本所属语言。如果不知道，可以使用auto     * @param targetLang  目标语言。必须是明确的有效的目标语言     * @return     * @throws Exception     */    public String translateText(String text,String sourceLang, String targetLang) throws Exception{        String retStr="";        if( !( isSupport(sourceLang) || isSupport(targetLang) ) ){            throw new Exception("不支持的语言类型");        }        List
      
        nvps = new ArrayList();        nvps.add(new BasicNameValuePair("client", CLIENT));        nvps.add(new BasicNameValuePair("sl", sourceLang));        nvps.add(new BasicNameValuePair("tl", targetLang));        nvps.add(new BasicNameValuePair("dt", "t"));        nvps.add(new BasicNameValuePair("q", text));//        String finalPath=PATH +"?client="+CLIENT+"&sl="+sourceLang+"&tl="+targetLang+"&dt=t&q="+ text ;        String resp =  postHttp( PATH,nvps);        if( null == resp ){            throw  new Exception("网络异常");        }//        System.out.println( "==>返回内容：" + resp);        JSONArray jsonObject = JSONArray.parseArray( resp );        for (Iterator