Java電子英漢詞典是一款基于Java語言開發的小型應用軟件，用于英漢互譯。

一、設計思路

1. 界面設計

采用Swing GUI界面，包括一個文本框和一個翻譯按鈕。

JLabel label = new JLabel("請輸入要翻譯的單詞：");
JTextField textField = new JTextField(20);
JButton button = new JButton("翻譯");

2. 功能設計

利用有道翻譯API實現英漢互譯功能。

//連接有道翻譯API
String urlStr = "http://fanyi.youdao.com/openapi.do";
urlStr += "?keyfrom=youdaotest&key=1718914161&type=data&doctype=json&version=1.1&q=";
urlStr += text;
URL url = new URL(urlStr);
URLConnection connection = url.openConnection();
connection.connect();
BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
String line;
while ((line = reader.readLine()) != null) {
//解析有道翻譯API返回的JSON數據
JSONObject json = JSONObject.parseObject(line);
JSONArray array = json.getJSONArray("translation");
result = array.getString(0);
}
reader.close();

二、代碼實現

完整代碼如下：

import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import javax.swing.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.URL;
import java.net.URLConnection;
public class MyDictionary extends JFrame implements ActionListener {
private static final long serialVersionUID = 1L;
private JLabel label;
private JTextField textField;
private JButton button;
private String result;
public MyDictionary() {
super("電子英漢詞典");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setLocationRelativeTo(null);
setSize(400, 200);
setResizable(false);
setLayout(null);
label = new JLabel("請輸入要翻譯的單詞：");
label.setBounds(30, 30, 150, 30);
add(label);
textField = new JTextField(20);
textField.setBounds(170, 30, 150, 30);
add(textField);
button = new JButton("翻譯");
button.setBounds(150, 90, 100, 30);
button.addActionListener(this);
add(button);
setAlwaysOnTop(true);
setVisible(true);
}
public void actionPerformed(ActionEvent e) {
String text = textField.getText().trim();
if (text.length() == 0) {
result = "請輸入要翻譯的單詞！";
} else {
result = translate(text);
}
JOptionPane.showMessageDialog(null, result);
}
private String translate(String text) {
String result = "";
try {
//連接有道翻譯API
String urlStr = "http://fanyi.youdao.com/openapi.do";
urlStr += "?keyfrom=youdaotest&key=1718914161&type=data&doctype=json&version=1.1&q=";
urlStr += text;
URL url = new URL(urlStr);
URLConnection connection = url.openConnection();
connection.connect();
BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
String line;
while ((line = reader.readLine()) != null) {
//解析有道翻譯API返回的JSON數據
JSONObject json = JSONObject.parseObject(line);
JSONArray array = json.getJSONArray("translation");
result = array.getString(0);
}
reader.close();
} catch (Exception e) {
e.printStackTrace();
}
return result;
}
public static void main(String[] args) {
new MyDictionary();
}
}