百度翻译优化之后

package com.example;

import com.google.gson.JsonArray;
import com.google.gson.JsonObject;
import com.google.gson.JsonParser;
import okhttp3.*;
import org.json.JSONException;
import org.json.JSONObject;

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.IOException;

public class fanyi extends JFrame {

    private static final String API_KEY = "dzjU0EZolFp0hpYlKD8ckSpk";
    private static final String SECRET_KEY = "XbMab4iuLO4dkkKACNDQw5nONYRjTyv4";

    private static final OkHttpClient HTTP_CLIENT = new OkHttpClient().newBuilder().build();

    private JTextArea inputTextArea;
    private JTextArea outputTextArea;
    private JComboBox<String> fromLanguageComboBox;
    private JComboBox<String> toLanguageComboBox;


    public fanyi() {
        // Set up the main frame
        setTitle("Translation GUI");
        setSize(500, 400);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setLocationRelativeTo(null);

        // Set up the language options
        String[] languages = {"en", "zh"};
        fromLanguageComboBox = new JComboBox<>(languages);
        toLanguageComboBox = new JComboBox<>(languages);

        // Create components
        inputTextArea = new JTextArea(10, 40);
        inputTextArea.setFont(new Font("SimSun", Font.PLAIN, 16)); // Set font size to 16
        outputTextArea = new JTextArea("Translation results will be displayed here.");
        outputTextArea.setFont(new Font("SimSun", Font.PLAIN, 16)); // Set font size to 16
        outputTextArea.setForeground(new Color(34, 139, 34)); // Set text color to green
        outputTextArea.setEditable(false);

        JButton translateButton = new JButton("Translate");
        translateButton.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                translateText();
            }
        });

        // Set up the layout
        JPanel mainPanel = new JPanel(new BorderLayout());
        mainPanel.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));

        JPanel inputPanel = new JPanel(new BorderLayout());
        inputPanel.add(new JLabel("Input Text:"), BorderLayout.NORTH);
        inputPanel.add(new JScrollPane(inputTextArea), BorderLayout.CENTER);

        JPanel translationOptionsPanel = new JPanel();
        translationOptionsPanel.add(fromLanguageComboBox);
        translationOptionsPanel.add(new JLabel("->"));
        translationOptionsPanel.add(toLanguageComboBox);

        JPanel buttonPanel = new JPanel();
        buttonPanel.add(translateButton);

        mainPanel.add(inputPanel, BorderLayout.NORTH);
        mainPanel.add(outputTextArea, BorderLayout.CENTER);
        mainPanel.add(translationOptionsPanel, BorderLayout.WEST);
        mainPanel.add(buttonPanel, BorderLayout.SOUTH);

        // Add components to the frame
        add(mainPanel);

        // Make the frame visible
        setVisible(true);
    }

    private void translateText() {
        try {
            String inputText = inputTextArea.getText();
            String accessToken = getAccessToken();
            String translationResult = performTranslation(inputText, accessToken);
            System.out.println(inputText);
            String translatedText = extractTranslation(translationResult);
            outputTextArea.setText(translatedText);
        } catch (IOException e) {
            e.printStackTrace();
            outputTextArea.setText("Error during translation. Check the console for details.");
        }
    }
    private String performTranslation(String text, String accessToken) throws IOException {
        String fromLanguage = (String) fromLanguageComboBox.getSelectedItem();
        String toLanguage = (String) toLanguageComboBox.getSelectedItem();
        MediaType mediaType = MediaType.parse("application/json");
        String jsonBody = String.format( "{\"from\":\"%s\",\"to\":\"%s\",\"q\":\"" + text + "\"}", fromLanguage, toLanguage);
        RequestBody body = RequestBody.create(mediaType, jsonBody);
        Request request = new Request.Builder()
                .url("https://aip.baidubce.com/rpc/2.0/mt/texttrans/v1?access_token=" + accessToken)
                .method("POST", body)
                .addHeader("Content-Type", "application/json")
                .addHeader("Accept", "application/json")
                .build();
        Response response = HTTP_CLIENT.newCall(request).execute();
        return response.body().string();

    }

    private String extractTranslation(String translationResult) {
        JsonObject json = JsonParser.parseString(translationResult).getAsJsonObject();
        JsonObject resultObject = json.getAsJsonObject("result");
        System.out.println(json);
        JsonArray translations = resultObject.getAsJsonArray("trans_result");
        System.out.println(translations);
        JsonObject translation = translations.get(0).getAsJsonObject();
        if (json.has("error_code")) {
            // 检查是否包含错误码，如果是，处理错误信息
            int errorCode = json.get("error_code").getAsInt();
            String errorMsg = json.get("error_msg").getAsString();
            System.out.println("Translation error: " + errorCode + ", " + errorMsg);
            return "Translation not available";
        }
        if (json.has("trans_result")) {

            if (!translations.isJsonNull() && translations.size() > 0) {

                if (translation.has("dst")) {
                    return translation.get("dst").getAsString();
                }
            }
        }
        return translation.get("dst").getAsString();
    }


    private String getAccessToken() throws IOException {
        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);
        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();
        Response response = HTTP_CLIENT.newCall(request).execute();
        try {
            return new JSONObject(response.body().string()).getString("access_token");
        } catch (JSONException e) {
            throw new RuntimeException(e);
        }
    }

    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            @Override
            public void run() {
                new fanyi();
            }
        });
    }
}