通过httpClient实现google翻译

google翻译各国简写表
https://developers.google.com/translate/v2/using_rest

1. [代码]maven依赖

<dependency>

<groupId>org.apache.httpcomponents</groupId>

<artifactId>httpcore</artifactId>

<version> 4.2 . 1 </version>

</dependency>

<dependency>

<groupId>org.apache.httpcomponents</groupId>

<artifactId>httpclient</artifactId>

<version> 4.2 . 1 </version>

</dependency>

<dependency>

<groupId>log4j</groupId>

<artifactId>log4j</artifactId>

<version> 1.2 . 17 </version>

</dependency>

2. [代码]翻译工具类

public class TranslateUtil {

private static Log logger = LogFactory.getLog(TranslateUtil. class );

private static final String URL_TEMPLATE = "http://translate.google.cn/translate_a/single?client=t" ;

private static final String ENCODING = "UTF-8" ;

private DefaultHttpClient client;

private static TranslateUtil translateUtil = new TranslateUtil();

private TranslateUtil() {

client = ConnectionManager.getHttpClient();

}

public static TranslateUtil getInstance() {

return translateUtil;

}

/**

* google翻译(文本自动识别)

*

* @param text

* 要翻译的文本

* @param target_lang

* 目标语言

* @return

* @throws Exception

*/

public String translate( final String text, final String target_lang) {

return translate(text, Language.AUTO.getValue(), target_lang);

}

/**

* 中午转为英文

*

* @param text

* @return

*/

public String cn2en( final String text) {

return translate(text, Language.CHINA.getValue(),

Language.ENGLISH.getValue());

}

/**

* 英文转中文

*

* @param text

* @return

*/

public String en2cn( final String text) {

return translate(text, Language.ENGLISH.getValue(),

Language.CHINA.getValue());

}

/**

* google翻译

*

* @param text

* 要翻译的文本

* @param src_lang

* 源文本语言

* @param target_lang

* 目标语言

* @return

* @throws Exception

*/

public String translate( final String text, final String src_lang,

final String target_lang) {

String result = null ;

try {

String url = URL_TEMPLATE

+ "&sl="

+ src_lang

+ "&tl="

+ target_lang

+ "&hl="

+ src_lang

+ "&dt=bd&dt=ex&dt=ld&dt=md&dt=qc&dt=rw&dt=rm&dt=ss&dt=t&dt=at&dt=sw&ie="

+ ENCODING + "&oe=" + ENCODING

+ "&prev=btn&ssel=0&tsel=0&q="

+ URLEncoder.encode(text, ENCODING);

HttpGet get = new HttpGet(url);

HttpResponse response = client.execute(get);

String allInfo = EntityUtils.toString(response.getEntity());

String resultArray[] = allInfo.split( "]]" )[ 0 ].split( "]" );

for ( int i = 0 ; i < resultArray.length - 1 ; i++) {

resultBuffer.append(resultArray[i].split( "\"" )[ 1 ]);

}

result = resultBuffer.toString();

result = result.replace( "\\n" , "\r\n" );

} catch (Exception e) {

logger.error(e);

}

return result;

}

3. [代码]httpclient管理类

public class ConnectionManager {

/** 连接超时时间 */

static final int TIMEOUT = 30000 ;

/** 数据传输超时 */

static final int SO_TIMEOUT = 30000 ;

static String UA = "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.1"

+ " (KHTML, like Gecko) Chrome/21.0.1180.89 Safari/537.1" ;

private ConnectionManager() {

}

public static DefaultHttpClient getHttpClient() {

SchemeRegistry schemeRegistry = new SchemeRegistry();

schemeRegistry.register( new Scheme( "http" , 80 , PlainSocketFactory

.getSocketFactory()));

schemeRegistry.register( new Scheme( "https" , 443 , SSLSocketFactory

.getSocketFactory()));

PoolingClientConnectionManager cm = new PoolingClientConnectionManager(

schemeRegistry);

cm.setMaxTotal( 500 );

cm.setDefaultMaxPerRoute( 200 );

HttpParams params = new BasicHttpParams();

params.setParameter(CoreConnectionPNames.CONNECTION_TIMEOUT, TIMEOUT);

params.setParameter(CoreConnectionPNames.SO_TIMEOUT, SO_TIMEOUT);

params.setParameter(CoreProtocolPNames.USER_AGENT, UA);

DefaultHttpClient client = new DefaultHttpClient(cm, params);

return client;

}

4. [代码]语言枚举

public enum Language {

AUTO( "自动" , "auto" ), //

TAIWAN( "台湾" , "zh-TW" ), //

CHINA( "中文" , "zh-CN" ), //

ENGLISH( "英语" , "en" ), //

JAPAN( "日文" , "ja" ); //

private String name;

private String value;

private Language(String name, String value) {

this .name = name;

this .value = value;

}

public String getName() {

return name;

}

public void setName(String name) {

this .name = name;

}

public String getValue() {

return value;

}

public void setValue(String value) {

this .value = value;

}

5. [代码]测试类跳至 [1] [2] [3] [4] [5] [全屏预览]

public class Test {

public static void main(String[] args) throws Exception {

System.out.println(TranslateUtil.getInstance().translate( "你的名字叫什么" ,

Language.CHINA.getValue(), Language.ENGLISH.getValue()));

}