2024.12.16

百度翻译源代码
package org.example;

import okhttp3.*;
import org.json.JSONObject;

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

/**
 * 需要添加依赖
 * <!-- https://mvnrepository.com/artifact/com.squareup.okhttp3/okhttp -->
 * <dependency>
 *     <groupId>com.squareup.okhttp3</groupId>
 *     <artifactId>okhttp</artifactId>
 *     <version>4.12.0</version>
 * </dependency>
 */

public class TranslatorGUI {
    public static final String API_KEY = "TtVVlE0nR3Gj05Bi65F3HEo0";
    public static final String SECRET_KEY = "tGrbq6QtltoeYyAiwy9ufRD6lYbhWtCZ";

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

    public static void main(String[] args) {
        // 创建主窗口
        JFrame frame = new JFrame("百度翻译");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(500, 400);
        frame.setLayout(new BorderLayout());

        // 创建面板
        JPanel panel = new JPanel();
        panel.setLayout(new GridBagLayout());
        GridBagConstraints gbc = new GridBagConstraints();
        gbc.insets = new Insets(10, 10, 10, 10); // 给组件之间增加间距

        // 翻译方向选择
        gbc.gridx = 0;
        gbc.gridy = 0;
        panel.add(new JLabel("选择翻译方向:"), gbc);

        String[] languages = {"英译中", "中译英"};
        JComboBox<String> langComboBox = new JComboBox<>(languages);
        gbc.gridx = 1;
        panel.add(langComboBox, gbc);

        // 文本输入框
        gbc.gridx = 0;
        gbc.gridy = 1;
        panel.add(new JLabel("请输入要翻译的内容:"), gbc);

        JTextArea textArea = new JTextArea(5, 30);
        textArea.setLineWrap(true);
        JScrollPane scrollPane = new JScrollPane(textArea);
        gbc.gridx = 1;
        panel.add(scrollPane, gbc);

        // 翻译按钮
        gbc.gridx = 0;
        gbc.gridy = 2;
        gbc.gridwidth = 2;
        JButton translateButton = new JButton("开始翻译");
        translateButton.setPreferredSize(new Dimension(120, 30)); // 设置按钮大小
        panel.add(translateButton, gbc);

        // "翻译结果"标签放在左侧中间
        gbc.gridx = 0;
        gbc.gridy = 3;
        gbc.gridwidth = 1;
        gbc.anchor = GridBagConstraints.CENTER;  // 垂直居中
        panel.add(new JLabel("翻译结果:"), gbc);

        // 翻译结果显示框
        gbc.gridx = 1;
        gbc.gridy = 3;
        gbc.gridwidth = 2;
        JTextArea resultArea = new JTextArea(5, 30);
        resultArea.setLineWrap(true);
        resultArea.setEditable(false);
        JScrollPane resultScrollPane = new JScrollPane(resultArea);
        panel.add(resultScrollPane, gbc);

        // 添加面板到框架
        frame.add(panel, BorderLayout.CENTER);

        // 显示窗口
        frame.setVisible(true);

        // 按钮事件处理
        translateButton.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                String fromLang = langComboBox.getSelectedIndex() == 0 ? "en" : "zh";
                String toLang = langComboBox.getSelectedIndex() == 0 ? "zh" : "en";
                String textToTranslate = textArea.getText().trim();

                if (!textToTranslate.isEmpty()) {
                    try {
                        String translatedText = translate(fromLang, toLang, textToTranslate);
                        resultArea.setText(translatedText);
                    } catch (IOException ex) {
                        resultArea.setText("翻译失败: " + ex.getMessage());
                    }
                } else {
                    resultArea.setText("请输入文本进行翻译！");
                }
            }
        });
    }

    /**
     * 翻译文本
     *
     * @param fromLang 源语言
     * @param toLang   目标语言
     * @param text     要翻译的内容
     * @return 翻译后的文本
     * @throws IOException IO异常
     */
    static String translate(String fromLang, String toLang, String text) throws IOException {
        MediaType mediaType = MediaType.parse("application/json");
        // 构建请求体
        String jsonBody = String.format("{\"from\":\"%s\",\"to\":\"%s\",\"q\":\"%s\"}", fromLang, toLang, text);
        RequestBody body = RequestBody.create(mediaType, jsonBody);

        // 构建请求
        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();

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

        // 获取响应的字符串内容
        String responseBody = response.body().string();
        System.out.println("API响应: " + responseBody);  // 打印原始响应，帮助调试

        // 解析返回的JSON，检查字段是否存在
        JSONObject jsonResponse = new JSONObject(responseBody);

        // 检查返回数据的结构
        if (jsonResponse.has("result") && jsonResponse.getJSONObject("result").has("trans_result")) {
            // 从 result 中提取 trans_result
            return jsonResponse.getJSONObject("result")
                    .getJSONArray("trans_result")
                    .getJSONObject(0)
                    .getString("dst");
        } else {
            // 如果没有 "trans_result" 字段，打印出其他可能的字段
            System.out.println("错误信息: " + jsonResponse.optString("error_msg"));
            return "翻译失败，请检查API响应";
        }
    }

    /**
     * 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 {
        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();
        return new JSONObject(response.body().string()).getString("access_token");
    }
}