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Java百度翻译API中⽂转英⽂接⼊

Java百度翻译API中⽂转英⽂接⼊

业务上遇到了语⾔国际化的需求，需要将中⽂的json字符串翻译成英⽂，通过百度翻译API接⼝来实现翻译功能。

1、平台认证

登录百度翻译开放平台，找到通⽤翻译模块，提交申请。

申请通过后，就能直接使⽤了，默认为标准版，完全免费：

2、Javademo配置

翻译开放平台⾮常友好，提供了许多常⽤语⾔的demo下载，稍微修改下便能使⽤了。

demo配置好appid及密钥，运⾏便能看到控制台中⽂成功翻译成了英⽂：

3、封装接⼝

我的⽬标是将⼀长串的中⽂json翻译成英⽂json,上⾯的demo是满⾜不了需求的，可以创建⼀个springboot项⽬，将demo代码迁移到

项⽬中，封装⼀个接⼝实现业务需求。

项⽬结构如下：

3.1、⾃定义接⼝

先引⼊fastJson依赖：

a

fastjson

1.2.70

接⼝参数接收⼀长串的中⽂json，翻译完成后返回英⽂json:

3.1.1、直接创建线程版本

ller;

;

ray;

pi;

ller;

ping;

tBody;

tMapping;

Body;

ortedEncodingException;

oder;

;

;

@Controller

@RequestMapping("/com/lin")

publicclassTranslateController{

//在平台申请的APP_ID详见/api/trans/product/desktop?req=developer

privatestaticfinalStringAPP_ID="";

privatestaticfinalStringSECURITY_KEY="";

@GetMapping("/translate")

@ResponBody

publicMap>toTranslate(@RequestBodyMap>map)throwsInterruptedException{

TransApiapi=newTransApi(APP_ID,SECURITY_KEY);

for(Stringkey:()){

MapchildMap=(key);

StringBuilderbuilder=newStringBuilder();

for(StringchildKey:()){

//需要翻译的中⽂

((childKey)).append("n");

}

//创建线程

Threadthread=newThread(){

@Override

publicvoidrun(){

Stringresult=nsResult(ng(),"auto","en");

n(result);

//转成map

MapmapResult=bject(result,);

List>transResult=(List>)(String(("trans_result")));

inti=0;

for(StringchildKey:()){

//获取翻译结果

StringtransQuery=(i).get("dst");

try{

//解码

transQuery=(transQuery,"utf-8");

}catch(UnsupportedEncodingExceptione){

tackTrace();

}

(childKey,transQuery);

i++;

}

try{

//睡眠⼀秒

(1000);

}catch(InterruptedExceptione){

tackTrace();

}

}

};

();

//主线程阻塞，等待⼦线程结束

();

}

returnmap;

}

}

3.1.2、线程池版本

ller;

;

ray;

pi;

ller;

ping;

tBody;

tMapping;

Body;

ortedEncodingException;

oder;

;

;

rent.*;

@Controller

@RequestMapping("/com/lin")

publicclassExecutorController{

//在平台申请的APP_ID详见/api/trans/product/desktop?req=developer

privatestaticfinalStringAPP_ID="";

privatestaticfinalStringSECURITY_KEY="";

@GetMapping("/executorTranslate")

@ResponBody

publicMap>toTranslate(@RequestBodyMap>map)throwsInterruptedException{

TransApiapi=newTransApi(APP_ID,SECURITY_KEY);

//创建线程池，核⼼线程1，最⼤线程数10，存货时间1分钟，任务队列5，默认的线程⼯⼚，拒绝策略为拒绝并抛出异常

ExecutorServiceexecutorService=newThreadPoolExecutor(1,10,1,S,

newArrayBlockingQueue<>(5,true),tThreadFactory(),olicy());

for(Stringkey:()){

MapchildMap=(key);

StringBuilderbuilder=newStringBuilder();

for(StringchildKey:()){

//需要翻译的中⽂

((childKey)).append("n");

}

//执⾏线程

e(()->{

Stringresult=nsResult(ng(),"auto","en");

n("result:"+result);

//转成map

MapmapResult=bject(result,);

List>transResult=(List>)(String(("trans_result")));

inti=0;

for(StringchildKey:()){

//获取翻译结果

StringtransQuery=(i).get("dst");

try{

//解码

transQuery=(transQuery,"utf-8");

}catch(UnsupportedEncodingExceptione){

tackTrace();

}

(childKey,transQuery);

i++;

}

});

//线程池等待时间，这⾥即阻塞2秒

ermination(2,S);

}

//任务执⾏完成后关闭线程池

wn();

returnmap;

}

}

3.2、demo配置类代码

HttpGet类代码如下：

;

edReader;

ble;

ption;

tream;

treamReader;

ortedEncodingException;

LConnection;

medURLException;

;

oder;

agementException;

AlgorithmException;

icateException;

.X509Certificate;

;

RLConnection;

text;

anager;

.X509TrustManager;

classHttpGet{

protectedstaticfinalintSOCKET_TIMEOUT=10000;//10S

protectedstaticfinalStringGET="GET";

publicstaticStringget(Stringhost,Mapparams){

try{

//设置SSLContext

SSLContextsslcontext=tance("TLS");

(null,newTrustManager[]{myX509TrustManager},null);

StringndUrl=getUrlWithQueryString(host,params);

//n("URL:"+ndUrl);

URLuri=newURL(ndUrl);//创建URL对象

HttpURLConnectionconn=(HttpURLConnection)nnection();

if(conninstanceofHttpsURLConnection){

((HttpsURLConnection)conn).tSSLSocketFactory(ketFactory());

}

nectTimeout(SOCKET_TIMEOUT);//设置相应超时

uestMethod(GET);

intstatusCode=ponCode();

if(statusCode!=_OK){

n("Http错误码："+statusCode);

}

//读取服务器的数据

InputStreamis=utStream();

BufferedReaderbr=newBufferedReader(newInputStreamReader(is));

StringBuilderbuilder=newStringBuilder();

Stringline=null;

while((line=ne())!=null){

(line);

}

Stringtext=ng();

clo(br);//关闭数据流

clo(is);//关闭数据流

nect();//断开连接

returntext;

}catch(MalformedURLExceptione){

tackTrace();

}catch(IOExceptione){

tackTrace();

}catch(KeyManagementExceptione){

tackTrace();

}catch(NoSuchAlgorithmExceptione){

tackTrace();

}

returnnull;

}

publicstaticStringgetUrlWithQueryString(Stringurl,Mapparams){

if(params==null){

returnurl;

}

StringBuilderbuilder=newStringBuilder(url);

if(ns("?")){

("&");

}el{

("?");

}

inti=0;

for(Stringkey:()){

Stringvalue=(key);

if(value==null){//过滤空的key

continue;

}

if(i!=0){

('&');

}

(key);

('=');

(encode(value));

i++;

}

ng();

}

protectedstaticvoidclo(Cloablecloable){

if(cloable!=null){

try{

();

}catch(IOExceptione){

tackTrace();

}

}

}

/**

*对输⼊的字符串进⾏URL编码,即转换为%20这种形式

*

*@paraminput原⽂

*@returnURL编码.如果编码失败,则返回原⽂

*/

publicstaticStringencode(Stringinput){

if(input==null){

return"";

}

try{

(input,"utf-8");

}catch(UnsupportedEncodingExceptione){

tackTrace();

}

returninput;

}

privatestaticTrustManagermyX509TrustManager=newX509TrustManager(){

@Override

publicX509Certificate[]getAcceptedIssuers(){

returnnull;

}

@Override

publicvoidcheckServerTrusted(X509Certificate[]chain,StringauthType)throwsCertificateException{

}

@Override

publicvoidcheckClientTrusted(X509Certificate[]chain,StringauthType)throwsCertificateException{

}

};

}

MD5类代码如下：

;

.*;

eDigest;

AlgorithmException;

/**

*MD5编码相关的类

*

*@authorwangjingtao

*

*/

publicclassMD5{

//⾸先初始化⼀个字符数组，⽤来存放每个16进制字符

privatestaticfinalchar[]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

*

*@paraminput输⼊的字符串

*@return输⼊字符串的MD5值

*

*/

publicstaticStringmd5(Stringinput){

if(input==null){

returnnull;

}

try{

//拿到⼀个MD5转换器（如果想要SHA1参数换成”SHA1”）

MessageDigestmessageDigest=tance("MD5");

//输⼊的字符串转换成字节数组

byte[]inputByteArray=es("utf-8");

//inputByteArray是输⼊字符串转换得到的字节数组

(inputByteArray);

//转换并返回结果，也是字节数组，包含16个元素

byte[]resultByteArray=();

//字符数组转换成字符串返回

returnbyteArrayToHex(resultByteArray);

}catch(NoSuchAlgorithmException|UnsupportedEncodingExceptione){

tackTrace();

returnnull;

}

}

/**

*获取⽂件的MD5值

*

*@paramfile

*@return

*/

publicstaticStringmd5(Filefile){

try{

if(!()){

n("⽂件"+olutePath()+"不存在或者不是⽂件");

returnnull;

}

FileInputStreamin=newFileInputStream(file);

Stringresult=md5(in);

();

returnresult;

}catch(FileNotFoundExceptione){

tackTrace();

}catch(IOExceptione){

tackTrace();

}

returnnull;

}

publicstaticStringmd5(InputStreamin){

try{

MessageDigestmessagedigest=tance("MD5");

byte[]buffer=newbyte[1024];

intread=0;

while((read=(buffer))!=-1){

(buffer,0,read);

}

();

Stringresult=byteArrayToHex(());

returnresult;

}catch(NoSuchAlgorithmExceptione){

tackTrace();

}catch(FileNotFoundExceptione){

tackTrace();

}catch(IOExceptione){

tackTrace();

}

returnnull;

}

privatestaticStringbyteArrayToHex(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=newchar[*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

intindex=0;

for(byteb:byteArray){

resultCharArray[index++]=hexDigits[b>>>4&0xf];

resultCharArray[index++]=hexDigits[b&0xf];

}

//字符数组组合成字符串返回

returnnewString(resultCharArray);

}

}

TransApi类代码如下：

;

p;

;

publicclassTransApi{

privatestaticfinalStringTRANS_API_HOST="/api/trans/vip/translate";

privateStringappid;

privateStringcurityKey;

publicTransApi(Stringappid,StringcurityKey){

=appid;

tyKey=curityKey;

}

publicStringgetTransResult(Stringquery,Stringfrom,Stringto){

Mapparams=buildParams(query,from,to);

(TRANS_API_HOST,params);

}

privateMapbuildParams(Stringquery,Stringfrom,Stringto){

Mapparams=newHashMap();

("q",query);

("from",from);

("to",to);

("appid",appid);

//随机数

Stringsalt=f(tTimeMillis());

("salt",salt);

//签名

Stringsrc=appid+query+salt+curityKey;//加密前的原⽂

("sign",5(src));

returnparams;

}

}

3.3、结果⽰例

原中⽂json：

{

"login":{

"login":"登录",

"loginLoading":"登录中...",

"account":"账号",

"password":"密码",

"lang":"语⾔",

"tAddress":"设置服务地址",

"more":"更多"

},

"mDns":{

"local":"局域⽹",

"localText":"内的XYMERP服务",

"uAddress":"当前设置的地址",

"addressUnAvailable":"⽆法连接此服务器",

"tAddressTips":"未设置服务地址，⽴刻设置"

}

}

翻译后的英⽂json：

{

"login":{

"login":"Signin",

"loginLoading":"Loggingin",

"account":"accountnumber",

"password":"password",

"lang":"language",

"tAddress":"Setrviceaddress",

"more":"more"

},

"mDns":{

"local":"LAN",

"localText":"Xymerprvicein",

"uAddress":"Currentlytaddress",

"addressUnAvailable":"Unabletoconnecttothisrver",

"tAddressTips":"Serviceaddressnott,tnow"

}

}

以上结果满⾜我的需求了，不满⾜你们需求的就稍微修改下吧。