谷歌的翻译api是收费的，但是为了临时用一下，可以免费hack他们网页版的翻译接口，而且不需要验证。

[1]java代码如下

public class Translator {
    public String translate(String langFrom, String langTo,
                                         String word) throws Exception {

        String url = "https://translate.googleapis.com/translate_a/single?" +
                "client=gtx&" +
                "sl=" + langFrom +
                "&tl=" + langTo +
                "&dt=t&q=" + URLEncoder.encode(word, "UTF-8");

        URL obj = new URL(url);
        HttpURLConnection con = (HttpURLConnection) obj.openConnection();
        con.setRequestProperty("User-Agent", "Mozilla/5.0");

        BufferedReader in = new BufferedReader(
                new InputStreamReader(con.getInputStream()));
        String inputLine;
        StringBuffer response = new StringBuffer();

        while ((inputLine = in.readLine()) != null) {
            response.append(inputLine);
        }
        in.close();

        return parseResult(response.toString());
    }

    private String parseResult(String inputJson) throws Exception {
        /*
         * inputJson for word 'hello' translated to language Hindi from English-
         * [[["नमस्ते","hello",,,1]],,"en"]
         * We have to get 'नमस्ते ' from this json.
         */

        JSONArray jsonArray = new JSONArray(inputJson);
        JSONArray jsonArray2 = (JSONArray) jsonArray.get(0);
//        JSONArray jsonArray3 = (JSONArray) jsonArray2.get(0);
        String result ="";

        for(var i =0;i < jsonArray2.length();i ++){
            result += ((JSONArray) jsonArray2.get(i)).get(0).toString();
        }

        return result;
    }


}

[2]调用translate(“en”,”zh-CN”,”hello world”);即可