智能翻译（实现百度翻译接口）
一、百度翻译接口API
由百度提供的接口应用，通过调用该接口，实现翻译功能
1.1 官网上进行注册，建立应用并获取到开发者appid和秘钥
1.2 官网提供了java的实现demo，可进行下载，下载地址http://appcdn.fanyi.baidu.com/api/demo/java.zip
二、后台实现，基于demo的改写
import java.io.BufferedReader;
import java.io.Closeable;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLEncoder;
import java.security.KeyManagementException;
import java.security.NoSuchAlgorithmException;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import java.util.Map;
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;
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,"utf-8"));
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 {
}
};
}
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
/**
* MD5编码相关的类
*
* @author wangjingtao
*
*/
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 (Exception 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);
}
}
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import net.sf.json.JSONObject;
public class TransApi {
//百度翻译的接口地址
private static final String TRAN_API_URL = "http://api.fanyi.baidu.com/api/trans/vip/translate";
//百度翻译开发者appid
private static final String APP_ID = "你自己的app_Id";
//开发者秘钥
private static final String SECURITY_KEY = "你自己的秘钥";
//翻译源自动识别
private static final String FROM = "auto";
//翻译结果语言 自动识别
private static final String TO ="auto";
/**
* 获取翻译结果
* @param query
* @return
*/
public static String getTransResult(String query) {
Map<String, String> params = buildParams(query);
String resultMap = HttpGet.get(TRAN_API_URL, params);
JSONObject json = JSONObject.fromObject(resultMap);
StringBuffer buffer = new StringBuffer();
//保存翻译后的结果
List<Map> list = (List<Map>) json.get("trans_result");
for (int i = 0; i < list.size(); i++) {
buffer.append(list.get(i).get("dst"));
}
return buffer.toString();
}
private static Map<String, String> buildParams(String query) {
Map<String, String> params = new HashMap<String, String>();
params.put("q", query);
params.put("from", FROM);
params.put("to", TO);
params.put("appid", APP_ID);
// 随机数
String salt = String.valueOf(System.currentTimeMillis());
params.put("salt", salt);
// 签名
String src = APP_ID + query + salt + SECURITY_KEY; // 加密前的原文
params.put("sign", MD5.md5(src));
return params;
}
}三、测试
import com.yuanjun.weixindemo.translate.TransApi;
public class TestTranslate {
public static void main(String[] args) {
String query = "苹果手机";
String query1 = "Hello world";
System.out.println(TransApi.getTransResult(query));
System.out.println(TransApi.getTransResult(query1));
}
}
四、在post请求，添加翻译功能
@RequestMapping(value = "wxdemo",method=RequestMethod.POST)
public void dopost(HttpServletRequest request,HttpServletResponse response){
response.setCharacterEncoding("utf-8");
PrintWriter out = null;
//将微信请求xml转为map格式，获取所需的参数
Map<String,String> map = MessageUtil.xmlToMap(request);
String ToUserName = map.get("ToUserName");
String FromUserName = map.get("FromUserName");
String MsgType = map.get("MsgType");
String Content = map.get("Content");
String message = null;
//处理文本类型，实现输入1，回复相应的封装的内容
if("text".equals(MsgType)){
if("图片".equals(Content)){
ImageMessageUtil util = new ImageMessageUtil();
message = util.initMessage(FromUserName, ToUserName);
}else if("1".equals(Content)){
TextMessageUtil textMessage = new TextMessageUtil();
message = textMessage.initMessage(FromUserName, ToUserName);
}else if(Content.startsWith("翻译")){
//设置翻译的规则，以翻译开头
TextMessageUtil textMessage = new TextMessageUtil();
//将翻译开头置为""
String query = Content.replaceAll("^翻译", "");
if(query==""){
//如果查询字段为空，调出使用指南
message = textMessage.initMessage(FromUserName, ToUserName);
}else{
message = textMessage.initMessage(FromUserName, ToUserName,TransApi.getTransResult(query));
}
}
else{
TextMessageUtil textMessage = new TextMessageUtil();
message = textMessage.initMessage(FromUserName, ToUserName,"您输入的内容是:"+Content);
}
}
try {
out = response.getWriter();
out.write(message);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
out.close();
}
五 源码下载，包含之前的消息，图片回复，创建菜单等
http://download.csdn.net/download/shenbug/10152017