travel-consumer-9600/src/main/java/com/travel/baidu/Translation.java

package com.travel.baidu;

import com.alibaba.fastjson.JSONObject;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import javax.servlet.http.HttpServletRequest;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * 翻译
 */
@Controller
@RequestMapping("translationInterface")
@CrossOrigin(origins = "*")
public class Translation {
    /**
     * 翻译接口
     * @param translationVal 参数
     * @return 返回翻译结果
     */
    @RequestMapping("translation")
    @ResponseBody
    public String translation(String translationVal, String from, String to, HttpServletRequest request){
        // 请求url
        String url = "https://aip.baidubce.com/rpc/2.0/mt/texttrans/v1";
        Map<String, Object> mapVal = new HashMap<>();

        try {
            String ip = request.getHeader("Host");
            System.out.println(ip);
            Map<String, Object> map = new HashMap<>();
            map.put("from", from);
            map.put("to", to);
            map.put("q", translationVal);
            map.put("termIds", "bak,pl");
            String param = GsonUtils.toJson(map);
            // 注意这里仅为了简化编码每一次请求都去获取access_token，线上环境access_token有过期时间， 客户端可自行缓存，过期后重新获取。
            String accessToken = accessToken();
            String result = HttpUtil.post(url, accessToken, "application/json", param);
            JSONObject jsonObject = JSONObject.parseObject(result);
            JSONObject jsonObject1 = (JSONObject) jsonObject.get("result");
            List<Map<Object, Object>> list = (List<Map<Object, Object>>) jsonObject1.get("trans_result");
            return (String) list.get(0).get("dst");
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }
    /**
     * 百度翻译获取access_token
     * @return 返回access_token
     */
    public static String accessToken(){
        String baidukey = "xmziCjk32tDLk9U2jpY2F5E7";
        String secretKey = "lYpEeG2tKKS82KZ9Q1gHKpfGgrRAXQMQ";
        // 获取token地址
        String authHost = "https://aip.baidubce.com/oauth/2.0/token?";
        String getAccessTokenUrl = authHost
                // 1. grant_type为固定参数
                + "grant_type=client_credentials"
                // 2. 官网获取的 API Key
                + "&client_id=" + baidukey
                // 3. 官网获取的 Secret Key
                + "&client_secret=" + secretKey;
        try {
            URL realUrl = new URL(getAccessTokenUrl);
            // 打开和URL之间的连接
            HttpURLConnection connection = (HttpURLConnection) realUrl.openConnection();
            connection.setRequestMethod("GET");
            connection.connect();
            // 获取所有响应头字段
            Map<String, List<String>> map = connection.getHeaderFields();
            // 遍历所有的响应头字段
            for (String key : map.keySet()) {
                System.err.println(key + "--->" + map.get(key));
            }
            // 定义 BufferedReader输入流来读取URL的响应
            BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
            String result = "";
            String line;
            while ((line = in.readLine()) != null) {
                result += line;
            }
            /**
             * 返回结果示例
             */
            JSONObject jsonObject = JSONObject.parseObject(result);
            String access_token = jsonObject.getString("access_token");
            return access_token;
        } catch (Exception e) {
            System.err.printf("获取token失败！");
            e.printStackTrace(System.err);
        }
        return null;
    }
}