直接上程式碼，沒有先後順序，全部匯入就行，將Google.js放在resources/tk/  裡面，注意修改package。

使用方法：

        Querier<AbstractTranslator> querierTrans = new Querier<>();
        querierTrans.setParams(LANG.EN, LANG.ZH, "把我翻譯一下，謝謝");
        querierTrans.attach(new GoogleTranslator());
        List<String> result = querierTrans.execute();
 

package cn.luowudi.common.translate.http;

import cn.luowudi.common.translate.lang.LANG;


public interface HttpParams {

    public void setFormData(LANG source, String text);


    public void setFormData(LANG from, LANG to, String text);
}

package cn.luowudi.common.translate.http;

import cn.luowudi.common.translate.lang.LANG;
import org.apache.http.HttpEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;

import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

public abstract class AbstractHttpAttribute {
    public String url;
    public Map<String, String> formData;
    public Map<LANG, String> langMap;
    public CloseableHttpClient httpClient;

    public AbstractHttpAttribute(String url) {
        this.url = url;
        this.formData = new HashMap<>();
        this.langMap = new HashMap<>();
        this.httpClient = HttpClients.createDefault();
    }

    public abstract String query() throws Exception;

    public abstract String run(LANG source, String text);

    public abstract String run(LANG from, LANG to, String text);

    public void close(HttpEntity httpEntity, CloseableHttpResponse httpResponse) {
        try {
            EntityUtils.consume(httpEntity);
            if (null != httpResponse) {
                httpResponse.close();
            }
            httpClient.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public void close() {
        try {
            if (null != httpClient) {
                httpClient.close();
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}
 

package cn.luowudi.common.translate.lang;

/**
 * <p>
 * 說明:
 * </p>
 *
 * @author Luo Gaolin
 */
public enum LANG {
    ZH,             // 中文
    EN,             // 英語
    JP,             // 日語
    FRA,            // 法語
    KOR,            // 韓語
    MS,             // 馬來語
    DE,             // 德語
    RU,             // 俄語
}
 

package cn.luowudi.common.translate.querier;

import cn.luowudi.common.translate.http.AbstractHttpAttribute;
import cn.luowudi.common.translate.lang.LANG;

import java.util.ArrayList;
import java.util.List;

public final class Querier<T extends AbstractHttpAttribute> {
    private LANG from;
    private LANG to;
    private String text;
    private List<T> collection;

    public Querier() {
        collection = new ArrayList<T>();
    }

    public List<String> execute() {
        List<String> result = new ArrayList<String>();

        for (T element : collection) {
            if (element.getClass().getName().contains("Translator")) {
                result.add(element.run(from, to, text));
            } else if (element.getClass().getName().contains("TTS")) {
                result.add(element.run(from, text));
            }
        }
        return result;
    }

    public void setParams(LANG from, LANG to, String text) {
        this.from = from;
        this.to = to;
        this.text = text;
    }

    public void setParams(LANG source, String text) {
        this.from = source;
        this.text = text;
    }

    public void attach(T element) {
        collection.add(element);
    }

    public void detach(T element) {
        collection.remove(element);
    }
}

package cn.luowudi.common.translate.trans;

import cn.luowudi.common.translate.http.AbstractHttpAttribute;
import cn.luowudi.common.translate.http.HttpParams;
import cn.luowudi.common.translate.lang.LANG;

import java.io.IOException;

public abstract class AbstractTranslator extends AbstractHttpAttribute implements HttpParams {

    public AbstractTranslator(String url) {
        super(url);
        setLangSupport();
    }

    @Override
    public String run(LANG source, String text) {
        return null;
    }

    @Override
    public String run(LANG from, LANG to, String text) {
        String result = "";
        setFormData(from, to, text);
        try {
            result = parses(query());
        } catch (Exception e) {
            e.printStackTrace();
        }
        close();
        return result;
    }

    public abstract void setLangSupport();

    @Override
    public void setFormData(LANG source, String text) {
    }

    @Override
    public abstract void setFormData(LANG from, LANG to, String text);

    @Override
    public abstract String query() throws Exception;

    public abstract String parses(String text) throws IOException;
}

package cn.luowudi.common.translate.trans.impl;

import cn.luowudi.common.translate.lang.LANG;
import cn.luowudi.common.translate.trans.AbstractTranslator;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.apache.http.HttpEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpUriRequest;
import org.apache.http.client.utils.URIBuilder;
import org.apache.http.util.EntityUtils;

import javax.script.Invocable;
import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;

public final class GoogleTranslator extends AbstractTranslator {
    private static final String url = "https://translate.google.cn/translate_a/single";

    public GoogleTranslator() {
        super(url);
    }


    @Override
    public void setLangSupport() {
        langMap.put(LANG.ZH, "zh-CN");
        langMap.put(LANG.EN, "en");
        langMap.put(LANG.JP, "ja");
        langMap.put(LANG.KOR, "ko");
        langMap.put(LANG.FRA, "fr");
        langMap.put(LANG.RU, "ru");
        langMap.put(LANG.DE, "de");
    }

    @Override
    public void setFormData(LANG from, LANG to, String text) {
        formData.put("client", "t");
        formData.put("sl", langMap.get(from));
        formData.put("tl", langMap.get(to));
        formData.put("hl", "zh-CN");
        formData.put("dt", "at");
        formData.put("dt", "bd");
        formData.put("dt", "ex");
        formData.put("dt", "ld");
        formData.put("dt", "md");
        formData.put("dt", "qca");
        formData.put("dt", "rw");
        formData.put("dt", "rm");
        formData.put("dt", "ss");
        formData.put("dt", "t");
        formData.put("ie", "UTF-8");
        formData.put("oe", "UTF-8");
        formData.put("source", "btn");
        formData.put("ssel", "0");
        formData.put("tsel", "0");
        formData.put("kc", "0");
        formData.put("tk", token(text));
        formData.put("q", text);
    }

    @Override
    public String query() throws Exception {
        URIBuilder uri = new URIBuilder(url);
        for (String key : formData.keySet()) {
            String value = formData.get(key);
            uri.addParameter(key, value);
        }
        HttpUriRequest request = new HttpGet(uri.toString());
        CloseableHttpResponse response = httpClient.execute(request);
        HttpEntity entity = response.getEntity();

        String result = EntityUtils.toString(entity, "utf-8");

        EntityUtils.consume(entity);
        response.getEntity().getContent().close();
        response.close();

        return result;
    }

    @Override
    public String parses(String text) throws IOException {
        ObjectMapper mapper = new ObjectMapper();
        return mapper.readTree(text).get(0).get(0).get(0).toString();
    }

    private String token(String text) {
        String tk = "";
        ScriptEngine engine = new ScriptEngineManager().getEngineByName("js");
        try {
            FileReader reader = new FileReader("./src/main/resources/tk/Google.js");
            engine.eval(reader);

            if (engine instanceof Invocable) {
                Invocable invoke = (Invocable) engine;
                tk = String.valueOf(invoke.invokeFunction("token", text));
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return tk;
    }
}

Google.js

function token(a) {
    var k = "";
    var b = 406644;
    var b1 = 3293161072;

    var jd = ".";
    var sb = "+-a^+6";
    var Zb = "+-3^+b+-f";

    for (var e = [], f = 0, g = 0; g < a.length; g++) {
        var m = a.charCodeAt(g);
        128 > m ? e[f++] = m: (2048 > m ? e[f++] = m >> 6 | 192 : (55296 == (m & 64512) && g + 1 < a.length && 56320 == (a.charCodeAt(g + 1) & 64512) ? (m = 65536 + ((m & 1023) << 10) + (a.charCodeAt(++g) & 1023), e[f++] = m >> 18 | 240, e[f++] = m >> 12 & 63 | 128) : e[f++] = m >> 12 | 224, e[f++] = m >> 6 & 63 | 128), e[f++] = m & 63 | 128)
    }
    a = b;
    for (f = 0; f < e.length; f++) a += e[f],
    a = RL(a, sb);
    a = RL(a, Zb);
    a ^= b1 || 0;
    0 > a && (a = (a & 2147483647) + 2147483648);
    a %= 1E6;
    return a.toString() + jd + (a ^ b)
};

function RL(a, b) {
    var t = "a";
    var Yb = "+";
    for (var c = 0; c < b.length - 2; c += 3) {
        var d = b.charAt(c + 2),
        d = d >= t ? d.charCodeAt(0) - 87 : Number(d),
        d = b.charAt(c + 1) == Yb ? a >>> d: a << d;
        a = b.charAt(c) == Yb ? a + d & 4294967295 : a ^ d
    }
    return a
}