增加翻译工具类：谷歌翻译（免费）—支持自动识别语言

Author: guozhipeng

src/main/java/com/luoboduner/moo/tool/util/GoogleTranslatorUtil.java

@@ -0,0 +1,66 @@
+package com.luoboduner.moo.tool.util;
+
+import cn.hutool.json.JSONArray;
+import org.apache.commons.lang3.StringUtils;
+
+import java.io.BufferedReader;
+import java.io.InputStreamReader;
+import java.net.HttpURLConnection;
+import java.net.URL;
+import java.net.URLEncoder;
+import java.nio.charset.StandardCharsets;
+
+/**
+ * 翻译工具类
+ */
+public class GoogleTranslatorUtil {
+
+    /**
+     *
+     * @param word
+     * @param sourceLanguage 源语言 默认auto 英文为 en
+     * @param targetLanguage 目标语言 默认zh-CN
+     * @return
+     */
+    public static String translate(String word,String sourceLanguage,String targetLanguage){
+        try {
+            if(StringUtils.isEmpty(sourceLanguage)){
+                sourceLanguage="auto";
+            }
+            if(StringUtils.isEmpty(targetLanguage)){
+                targetLanguage="zh-CN";
+            }
+            String url = "https://translate.googleapis.com/translate_a/single?" +
+                    "client=gtx&" +
+                    "sl=" + sourceLanguage +
+                    "&tl=" + targetLanguage +
+                    "&dt=t&q=" + URLEncoder.encode(word, StandardCharsets.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;
+            StringBuilder response = new StringBuilder();
+
+            while ((inputLine = in.readLine()) != null) {
+                response.append(inputLine);
+            }
+            in.close();
+            return parseResult(response.toString());
+        }catch (Exception e){
+            return  word;
+        }
+    }
+
+    private static String parseResult(String inputJson){
+        JSONArray jsonArray2 = (JSONArray) new JSONArray(inputJson).get(0);
+        StringBuilder result = new StringBuilder();
+        for (Object o : jsonArray2) {
+            result.append(((JSONArray) o).get(0).toString());
+        }
+        return result.toString();
+    }
+}