12.4

package Translate;

import okhttp3.*;

import org.json.JSONArray;
import org.json.JSONObject;

import java.io.IOException;
import java.util.Scanner;

public class test {
public static final String API_KEY = "MP8dIFzyozC82HXQqcaXeT8v";
public static final String SECRET_KEY = "6kaFGVdRGbO4Tw1c4B5TacbzGua5CilY";
static final OkHttpClient HTTP_CLIENT = new OkHttpClient().newBuilder().build();

public static void main(String[] args) {
    Scanner scanner = new Scanner(System.in);
    translate(scanner);
}

private static void translate(Scanner scanner) {
    System.out.println("请选择翻译方向（1：中译英，2：英译中，3：退出）：");
    int direction = scanner.nextInt();
    String targetLanguage = "中译英";
    if (direction == 1) {
        targetLanguage = "en";
    } else if (direction == 2) {
        targetLanguage = "zh";
    } else if (direction == 3){
        System.exit(0);
    } else {
        System.out.println("无效的选择");
        return;
    }
    System.out.println("请输入要翻译的文本：");
    scanner.nextLine(); // 读取换行符
    String textToTranslate = scanner.nextLine();

    try {
        String translatedText = translateText(textToTranslate, targetLanguage);
        System.out.println("翻译结果：" + translatedText);
    } catch (IOException ex) {
        System.out.println("翻译出错");
    }
    translate(scanner);
}

/**
 * 调用百度翻译API进行文本翻译
 *
 * @param textToTranslate 要翻译的文本
 * @param targetLanguage    目标语言代码
 * @return 翻译结果
 * @throws IOException IO异常
 */
static String translateText(String textToTranslate, String targetLanguage) throws IOException {
    // 构建请求体的 JSON 对象
    JSONObject requestBodyJson = new JSONObject();
    requestBodyJson.put("from", "auto");  // 源语言自动检测
    requestBodyJson.put("to", targetLanguage);  // 目标语言根据用户选择
    requestBodyJson.put("q", textToTranslate);  // 添加要翻译的文本

    // 创建请求体
    MediaType mediaType = MediaType.parse("application/json");
    RequestBody body = RequestBody.create(mediaType, requestBodyJson.toString());

    // 创建HTTP请求
    Request request = new Request.Builder()
            .url("https://aip.baidubce.com/rpc/2.0/mt/texttrans/v1?access_token=" + getAccessToken())
            .method("POST", body)
            .addHeader("Content-Type", "application/json")
            .addHeader("Accept", "application/json")
            .build();

    // 发起请求并获取响应
    Response response = HTTP_CLIENT.newCall(request).execute();

    // 解析翻译结果
    String translatedText = parseTranslationResult(response.body().string());
    return translatedText;
}

/**
 * 解析翻译结果
 *
 * @param responseBody 响应体字符串
 * @return 翻译结果
 */
static String parseTranslationResult(String responseBody) {
    JSONObject responseJson = new JSONObject(responseBody);
    JSONArray transResultArray = responseJson.getJSONObject("result").getJSONArray("trans_result");

    // 假设只翻译一段文本，取第一个翻译结果
    if (transResultArray.length() > 0) {
        return transResultArray.getJSONObject(0).getString("dst");
    } else {
        return "未能获取翻译结果";
    }
}

/**
 * 从用户的AK，SK生成鉴权签名（Access Token）
 *
 * @return 鉴权签名（Access Token）
 * @throws IOException IO异常
 */
static String getAccessToken() throws IOException {
    // 创建请求体
    MediaType mediaType = MediaType.parse("application/x-www-form-urlencoded");
    RequestBody body = RequestBody.create(mediaType, "grant_type=client_credentials&client_id=" + API_KEY
            + "&client_secret=" + SECRET_KEY);

    // 创建HTTP请求
    Request request = new Request.Builder()
            .url("https://aip.baidubce.com/oauth/2.0/token")
            .method("POST", body)
            .addHeader("Content-Type", "application/x-www-form-urlencoded")
            .build();

    // 发起请求并获取响应，解析JSON获取Access Token
    Response response = HTTP_CLIENT.newCall(request).execute();
    return new JSONObject(response.body().string()).getString("access_token");
}

}