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调用google翻译

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

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()));
    }
}