利用有道翻译实现英汉互译

以下程序需要google jason jar的辅助，你可以从 http://pan.baidu.com/s/17qSuq 这里下载。

程序如下：

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.StringWriter;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;

import com.google.gson.JsonObject;
import com.google.gson.JsonParser;


public class Main{
    public static void main(String[] args) throws Exception{
        System.out.println(translate("预防登革热。最近格林纳达登革热病例显示多个和病毒变异的趋势和增加的风险"));
        System.out.println(translate("Prevention of dengue fever. Grenada dengue cases show multiple recently and the trend of virus variation and increase the risk"));
    }
    
    public static String translate(String text) throws Exception{
        final String Youdao_Url = "http://fanyi.youdao.com/openapi.do?keyfrom=sxt102400&key=1695079984&type=data&doctype=json&version=1.1&q=";
        
        StringBuilder YoudaoAPIURL = new StringBuilder();
        YoudaoAPIURL.append(Youdao_Url).append(URLEncoder.encode(text, "UTF-8"));
        
        HttpURLConnection httpURLConnection = (HttpURLConnection) new URL(YoudaoAPIURL.toString()).openConnection();
        
        String rawData=stream2string(httpURLConnection.getInputStream());
        JsonObject jsonObj = new JsonParser().parse(rawData).getAsJsonObject();

        if ("0".equals(jsonObj.get("errorCode").toString()))
        {
            String finalData = jsonObj.get("translation").getAsString();
            return finalData;
        }else{
            return "Error!";
        }
    }
    
    /**
     * Transform stream to String
     * @param is
     * @return
     */
    private static String stream2string(InputStream is) {
        try {
            BufferedReader reader = new BufferedReader(new InputStreamReader(is, "UTF-8"));
            StringWriter writer = new StringWriter();
            
            char[] buffer = new char[10240];
            int n;
            while ((n = reader.read(buffer)) != -1) {
                writer.write(buffer, 0, n);
            }
            reader.close();
            return writer.toString();
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }
}

控制台输出如下：

Prevention of dengue fever. Grenada dengue cases show multiple recently and the trend of virus variation and increase the risk
预防登革热。最近格林纳达登革热病例显示多个和病毒变异的趋势,增加风险

 有道的翻译质量还是不错的。