Practical case of mutual translation between Chinese and Indonesian using Java Baidu Translation API

A practical case of Java Baidu Translation API realizing mutual translation between Chinese and Indonesian

Overview
With the development of globalization and the increase of transnational exchanges, the demand for language translation is also increasing. Baidu Translation API is a powerful tool that can help us translate between different languages ​​quickly and easily. This article will introduce how to use Java programming language to achieve mutual translation between Chinese and Indonesian through Baidu Translation API.

Implementation steps

1. Register Baidu developer account
   First, we need to register a Baidu developer account and apply to obtain the relevant key of the translation API so that it can be called in Java code API. On the Baidu Developer Platform, select Translation API and register an account to obtain the APP ID and key.
2. Import dependent libraries
   In Java code, we need to use related classes such as HttpURLConnection and BufferedReader to interact with the API. Therefore, relevant dependent libraries need to be imported into the project. Add the following dependencies in the pom.xml file:

<dependencies>
    <dependency>
        <groupId>org.apache.httpcomponents</groupId>
        <artifactId>httpclient</artifactId>
        <version>4.5.13</version>
    </dependency>
</dependencies>

3. Writing API requests
   In the Java code, we need to construct a URL to send the HTTP request and add the parameters and password The key is passed to the API. We can use the URLConnection class to achieve:

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

public class TranslationAPI {
    public static void main(String[] args) {
        String sourceText = "中文文本"; // 需要翻译的中文文本
        String appId = "your_app_id"; // 替换为你的APP ID
        String appKey = "your_app_key"; // 替换为你的APP Key

        try {
            String encodedText = URLEncoder.encode(sourceText, "UTF-8");
            String urlStr = "http://api.fanyi.baidu.com/api/trans/vip/translate?q=" + encodedText
                    + "&from=zh&to=id&appid=" + appId + "&salt=1435660288&sign=" + generateSign(sourceText, appId, appKey);

            URL url = new URL(urlStr);
            HttpURLConnection connection = (HttpURLConnection) url.openConnection();
            connection.setRequestMethod("GET");

            BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));

            StringBuilder response = new StringBuilder();
            String line;
            while ((line = reader.readLine()) != null) {
                response.append(line);
            }
            reader.close();

            System.out.println(response.toString());

        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    private static String generateSign(String sourceText, String appId, String appKey) {
        String sign = appId + sourceText + "1435660288" + appKey;
        MD5 md5 = new MD5();
        return md5.getMD5(sign);
    }
}

4. Parse API response
   API response is a JSON string that contains translation results and other related information. We can use the JSON library to parse this string and extract the translation results we need:

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;

public class TranslationAPI {
    // ...

    private static String parseTranslationResult(String response) {
        JSONObject jsonResult = JSON.parseObject(response);
        JSONArray translationArray = jsonResult.getJSONArray("trans_result");
        StringBuilder translationResult = new StringBuilder();

        for (int i = 0; i < translationArray.size(); i++) {
            JSONObject translationItem = translationArray.getJSONObject(i);
            String translatedText = translationItem.getString("dst");
            translationResult.append(translatedText).append(" ");
        }

        return translationResult.toString();
    }
}

5. Run the code
   Using the Java code written in the above steps, we will Can realize mutual translation between Chinese and Indonesian. Call the translation API in the main method and output the result:

public class TranslationAPI {
    // ...

    public static void main(String[] args) {
        String sourceText = "中文文本"; // 替换为你的中文文本

        // ...

        String translationResult = parseTranslationResult(response.toString());
        System.out.println("翻译结果：" + translationResult);
    }
}

The above is a practical case of using Java to realize mutual translation between Chinese and Indonesian through Baidu Translation API. Through this case, we can learn how to call the API to send requests, parse API responses and obtain translation results. I hope this article will help you learn Java and implement multi-language translation!

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