软件构造实验一——百度SDK翻译（作业截止啦，我终于能把这些代码发出来了捏~）
项目结构
具体代码
HttpGet.java
package org.example.test001;
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;
import java.io.*;
import java.net.*;
import java.security.KeyManagementException;
import java.security.NoSuchAlgorithmException;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import java.util.Map;
public class HttpGet {
protected static final int SOCKET_TIMEOUT = 10000; // 10S
protected static final String GET = "GET";
public static String get(String host, Map<String, String> params) {
try {
// 设置SSLContext
SSLContext sslcontext = SSLContext.getInstance("TLS");
sslcontext.init(null, new TrustManager[] { myX509TrustManager }, null);
String sendUrl = getUrlWithQueryString(host, params);
// System.out.println("URL:" + sendUrl);
URL uri = new URL(sendUrl); // 创建URL对象
HttpURLConnection conn = (HttpURLConnection) uri.openConnection();
if (conn instanceof HttpsURLConnection) {
((HttpsURLConnection) conn).setSSLSocketFactory(sslcontext.getSocketFactory());
}
conn.setConnectTimeout(SOCKET_TIMEOUT); // 设置相应超时
conn.setRequestMethod(GET);
int statusCode = conn.getResponseCode();
if (statusCode != HttpURLConnection.HTTP_OK) {
System.out.println("Http错误码：" + statusCode);
}
// 读取服务器的数据
InputStream is = conn.getInputStream();
BufferedReader br = new BufferedReader(new InputStreamReader(is));
StringBuilder builder = new StringBuilder();
String line = null;
while ((line = br.readLine()) != null) {
builder.append(line);
}
String text = builder.toString();
close(br); // 关闭数据流
close(is); // 关闭数据流
conn.disconnect(); // 断开连接
return text;
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (KeyManagementException e) {
e.printStackTrace();
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
}
return null;
}
public static String getUrlWithQueryString(String url, Map<String, String> params) {
if (params == null) {
return url;
}
StringBuilder builder = new StringBuilder(url);
if (url.contains("?")) {
builder.append("&");
} else {
builder.append("?");
}
int i = 0;
for (String key : params.keySet()) {
String value = params.get(key);
if (value == null) { // 过滤空的key
continue;
}
if (i != 0) {
builder.append('&');
}
builder.append(key);
builder.append('=');
builder.append(encode(value));
i++;
}
return builder.toString();
}
protected static void close(Closeable closeable) {
if (closeable != null) {
try {
closeable.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
/**
* 对输入的字符串进行URL编码, 即转换为%20这种形式
*
* @param input 原文
* @return URL编码. 如果编码失败, 则返回原文
*/
public static String encode(String input) {
if (input == null) {
return "";
}
try {
return URLEncoder.encode(input, "utf-8");
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
return input;
}
private static TrustManager myX509TrustManager = new X509TrustManager() {
@Override
public X509Certificate[] getAcceptedIssuers() {
return null;
}
@Override
public void checkServerTrusted(X509Certificate[] chain, String authType) throws CertificateException {
}
@Override
public void checkClientTrusted(X509Certificate[] chain, String authType) throws CertificateException {
}
};
}
Main.java
package org.example.test001;
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Main extends Frame {
public static TextField textField=new TextField();
public static JComboBox<String> jComboBox=new JComboBox<>();
public static JButton jButton=new JButton("翻译");
public static Label label=new Label();//放置翻译结果
//调用翻译代码
private static final String APP_ID = "20231127001893207";
private static final String SECURITY_KEY = "1rsHsW0CiWZOZxvbjYM9";
public static void main(String[] args) {
//定义出来一个GUI界面
JFrame jf=new JFrame("GUI翻译平台");
jf.setDefaultCloseOperation(jf.EXIT_ON_CLOSE);
jf.setSize(500,250);
jf.setLocationRelativeTo(null);
jf.setLayout(null);
//添加文本框，下拉框，按钮和标签
jComboBox.addItem("中译英");
jComboBox.addItem("英译中");
//放置组件
jComboBox.setBounds(200,20,80,30);
textField.setBounds(50,80,240,30);
jButton.setBounds(340,80,70,30);
label.setBounds(50,120,400,50);
jf.add(label);
jf.add(textField);
jf.add(jComboBox);
jf.add(jButton);
JButton c=new JButton(" ");
c.setContentAreaFilled(false); //按键透明
c.setBorderPainted(false); //边框透明
c.setEnabled(false); //不能点击
jf.setVisible(true);
//设置点击事件
jButton.addActionListener(new MyButtonListener());
}
static class MyButtonListener implements ActionListener{
@Override
public void actionPerformed(ActionEvent e) {
//点击即调用翻译代码，然后在label里面显示翻译结果
//1、获取textField文本内容
String startStr=textField.getText();
//2、调用翻译代码
TransApi api = new TransApi(APP_ID, SECURITY_KEY);
String query = startStr;
//根据GUI界面的下拉框选择项更改设置
String x=jComboBox.getSelectedItem().toString();
String result = null;
if(x.equals("中译英")){
result = api.getTransResult(query, "auto", "en");
}else if(x.equals("英译中")){
result = api.getTransResult(query, "auto", "zh");
}
System.out.println("result: "+result);
int begin = result.indexOf("dst");
String en = result.substring(begin + 6, result.length() - 4);
System.out.println(en);
String str=en;
Pattern pattern = Pattern.compile("(\\\\u(\\w{4}))");
Matcher matcher = pattern.matcher(str);
// 迭代，将str中的所有unicode转换为正常字符
while (matcher.find()) {
String unicodeFull = matcher.group(1); // 匹配出的每个字的unicode，比如\u67e5
String unicodeNum = matcher.group(2); // 匹配出每个字的数字，比如\u67e5，会匹配出67e5
// 将匹配出的数字按照16进制转换为10进制，转换为char类型，就是对应的正常字符了
char singleChar = (char) Integer.parseInt(unicodeNum, 16);
// 替换原始字符串中的unicode码
str = str.replace(unicodeFull, singleChar + "");
}
System.out.println("str: "+str);
//3、将结果显示到label里面
label.setText("翻译结果为： "+str);
}
}
}
MD5.java
package org.example.test001;
import java.io.*;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
public class MD5 {
// 首先初始化一个字符数组，用来存放每个16进制字符
private static final char[] hexDigits = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd',
'e', 'f' };
/**
* 获得一个字符串的MD5值
*
* @param input 输入的字符串
* @return 输入字符串的MD5值
*
*/
public static String md5(String input) {
if (input == null)
return null;
try {
// 拿到一个MD5转换器（如果想要SHA1参数换成”SHA1”）
MessageDigest messageDigest = MessageDigest.getInstance("MD5");
// 输入的字符串转换成字节数组
byte[] inputByteArray = input.getBytes("utf-8");
// inputByteArray是输入字符串转换得到的字节数组
messageDigest.update(inputByteArray);
// 转换并返回结果，也是字节数组，包含16个元素
byte[] resultByteArray = messageDigest.digest();
// 字符数组转换成字符串返回
return byteArrayToHex(resultByteArray);
} catch (NoSuchAlgorithmException | UnsupportedEncodingException e) {
return null;
}
}
/**
* 获取文件的MD5值
*
* @param file
* @return
*/
public static String md5(File file) {
try {
if (!file.isFile()) {
System.err.println("文件" + file.getAbsolutePath() + "不存在或者不是文件");
return null;
}
FileInputStream in = new FileInputStream(file);
String result = md5(in);
in.close();
return result;
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
public static String md5(InputStream in) {
try {
MessageDigest messagedigest = MessageDigest.getInstance("MD5");
byte[] buffer = new byte[1024];
int read = 0;
while ((read = in.read(buffer)) != -1) {
messagedigest.update(buffer, 0, read);
}
in.close();
String result = byteArrayToHex(messagedigest.digest());
return result;
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
private static String byteArrayToHex(byte[] byteArray) {
// new一个字符数组，这个就是用来组成结果字符串的（解释一下：一个byte是八位二进制，也就是2位十六进制字符（2的8次方等于16的2次方））
char[] resultCharArray = new char[byteArray.length * 2];
// 遍历字节数组，通过位运算（位运算效率高），转换成字符放到字符数组中去
int index = 0;
for (byte b : byteArray) {
resultCharArray[index++] = hexDigits[b >>> 4 & 0xf];
resultCharArray[index++] = hexDigits[b & 0xf];
}
// 字符数组组合成字符串返回
return new String(resultCharArray);
}
}
Test.java
package org.example.test001;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Test {
private static final String APP_ID = "20231127001893207";
private static final String SECURITY_KEY = "1rsHsW0CiWZOZxvbjYM9";
public static void main(String[] args) throws InterruptedException {
TransApi api = new TransApi(APP_ID, SECURITY_KEY);
String query = "Always believe that beautiful things are about to happen";
String result = api.getTransResult(query, "auto", "zh");
System.out.println("result: "+result);
int begin = result.indexOf("dst");
String en = result.substring(begin + 6, result.length() - 4);
System.out.println(en);
String str=en;
Pattern pattern = Pattern.compile("(\\\\u(\\w{4}))");
Matcher matcher = pattern.matcher(str);
// 迭代，将str中的所有unicode转换为正常字符
while (matcher.find()) {
String unicodeFull = matcher.group(1); // 匹配出的每个字的unicode，比如\u67e5
String unicodeNum = matcher.group(2); // 匹配出每个字的数字，比如\u67e5，会匹配出67e5
// 将匹配出的数字按照16进制转换为10进制，转换为char类型，就是对应的正常字符了
char singleChar = (char) Integer.parseInt(unicodeNum, 16);
// 替换原始字符串中的unicode码
str = str.replace(unicodeFull, singleChar + "");
}
System.out.println("str: "+str);
}
}
TransApi.java
package org.example.test001;
import java.util.HashMap;
import java.util.Map;
public class TransApi {
private static final String TRANS_API_HOST = "http://api.fanyi.baidu.com/api/trans/vip/translate";
private String appid;
private String securityKey;
public TransApi(String appid, String securityKey) {
this.appid = appid;
this.securityKey = securityKey;
}
public String getTransResult(String query, String from, String to) {
Map<String, String> params = buildParams(query, from, to);
return HttpGet.get(TRANS_API_HOST, params);
}
private Map<String, String> buildParams(String query, String from, String to) {
Map<String, String> params = new HashMap<String, String>();
params.put("q", query);
params.put("from", from);
params.put("to", to);
params.put("appid", appid);
// 随机数
String salt = String.valueOf(System.currentTimeMillis());
params.put("salt", salt);
// 签名
String src = appid + query + salt + securityKey; // 加密前的原文
params.put("sign", MD5.md5(src));
return params;
}
}
调用的是百度的翻译接口实现哒~~~
