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Java调用谷歌翻译实现翻译功能
调用频繁会被限制
可以通过springboot 自定义注解+拦截器+Redis实现ip限流,限制请求次数,防止恶意刷接口实践。
直接贴代码:
import com.alibaba.fastjson.JSON;
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.nio.charset.Charset;
import java.util.*;
/**
* 谷歌翻译.
*
* @date 2022/8/24
* @since 1.0
*/
public class Translate {
// 谷歌地址
private static final String PATH = "https://translate.googleapis/translate_a/single";
private static final String CLIENT = "gtx";
private static final String USER_AGENT = "Mozilla/5.0";
private static final Map<String, String> LANGUAGE_MAP = new HashMap();
private static Translate _instance = null;
/**
* 获取单例
*/
public static Translate getInstance() {
if (null == _instance) {
_instance = new Translate();
_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
*/
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<String, String> 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
* @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<NameValuePair> 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 resp = postHttp(PATH, nvps);
if (null == resp) {
throw new Exception("网络异常");
}
// JSONArray jsonObject = JSON.parseArray(resp);
// 此处转一下防止引号问题带来的报错
String jsonStr = JSON.parse(resp).toString();
JSONArray jsonObject = JSON.parseArray(jsonStr);
for (Iterator<Object> it = jsonObject.getJSONArray(0).iterator(); it.hasNext(); ) {
JSONArray a = (JSONArray) it.next();
retStr += a.getString(0);
}
return retStr;
}
/**
* post 请求
*
* @param url 请求地址
* @param nvps 参数列表
*/
private String postHttp(String url, List<NameValuePair> nvps) {
String responseStr = null;
CloseableHttpClient httpclient = HttpClients.createDefault();
HttpPost httpPost = new HttpPost(url);
//重要!!必须设置 http 头,否则返回为乱码
httpPost.setHeader("User-Agent", USER_AGENT);
CloseableHttpResponse response2 = null;
try {
// 重要!! 指定编码,对中文进行编码
httpPost.setEntity(new UrlEncodedFormEntity(nvps, Charset.forName("UTF-8")));
response2 = httpclient.execute(httpPost);
HttpEntity entity2 = response2.getEntity();
responseStr = EntityUtils.toString(entity2);
EntityUtils.consume(entity2);
} catch (IOException e) {
e.printStackTrace();
} finally {
if (null != response2) {
try {
response2.close();
} catch (IOException e) {
e.printStackTrace();
}
}
if (null != httpclient) {
try {
httpclient.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
return responseStr;
}
}
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