百度通用翻译技术（二）----程序demo

百度通用翻译，摘自官方文档

Python代码

#/usr/bin/env python
#coding=utf8

import httplib
import md5
import urllib
import random

appid = '20151113000005349'#输入自己的
secretKey = 'osubCEzlGjzvw8qdQc41'#输入自己的

httpClient = None
myurl = '/api/trans/vip/translate'
q = 'apple'
fromLang = 'en'
toLang = 'zh'
salt = random.randint(32768, 65536)

sign = appid+q+str(salt)+secretKey
m1 = md5.new()
m1.update(sign)
sign = m1.hexdigest()
myurl = myurl+'?appid='+appid+'&q='+urllib.quote(q)+'&from='+fromLang+'&to='+toLang+'&salt='+str(salt)+'&sign='+sign

try:
httpClient = httplib.HTTPConnection('api.fanyi.baidu.com')
httpClient.request('GET', myurl)

#response是HTTPResponse对象
response = httpClient.getresponse()
print response.read()
except Exception, e:
print e
finally:
if httpClient:
httpClient.close()

Java代码

package com.baidu.translate.demo;

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;
}

}

package com.baidu.translate.demo;

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
cc89

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 {
}
};

}

package com.baidu.translate.demo;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
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;
try {
inputByteArray = input.getBytes("utf-8");
messageDigest.update(inputByteArray);
} catch (UnsupportedEncodingException e) {
// TODO Auto-generated catch block
e.printStackTrace();

}
// inputByteArray是输入字符串转换得到的字节数组

// 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 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);

}

}

package com.baidu.translate.test;
import com.baidu.translate.demo.TransApi;

public class Main {

// 在平台申请的APP_ID 详见 http://api.fanyi.baidu.com/api/trans/product/desktop?req=developer private static final String APP_ID = "×××××××××××××";//输入自己的
private static final String SECURITY_KEY = "××××××××××××××";//输入自己的

public static void main(String[] args) {
TransApi api = new TransApi(APP_ID, SECURITY_KEY);

String query = "高度600米";
System.out.println(api.getTransResult(query, "auto", "en"));
}

}