JAVA (Jsp)利用Google的Translate开发API的代码

为了利用Google Translate API进行翻译，我们需要遵循以下步骤：

1. 注册Google Cloud账户并启用Translate API
   首先，我们需要在Google Cloud上注册一个账户并启用Translate API。在注册完成后，我们需要创建一个新的项目并在该项目下启用Translate API。创建项目的过程中需要生成一个API密钥，该密钥是后续代码使用Translate API时的重要凭证。

2. 导入Google API客户端库
   接下来，我们需要将Google的API客户端库（google-api-java-client）导入到我们的Java项目中。在Maven仓库中获取该库的最新版本即可。

3. 准备翻译请求
   我们需要创建一个Translate对象并调用其translate()方法进行翻译。该方法需要包含待翻译的文本和所需的目标语言做为参数。例如，我们需要将英文文本翻译为中文，调用translate()方法时需要传递源文本和“zh-CN”作为参数。

示例一：翻译单条文本

import java.util.Arrays;
import com.google.api.client.googleapis.javanet.GoogleNetHttpTransport;
import com.google.api.client.json.jackson2.JacksonFactory;
import com.google.api.services.translate.Translate;
import com.google.api.services.translate.TranslateRequestInitializer;
import com.google.api.services.translate.TranslateScopes;
import com.google.auth.http.HttpCredentialsAdapter;
import com.google.auth.oauth2.GoogleCredentials;
import com.google.common.collect.ImmutableList;

public class TranslateTextDemo {
  public static void main(String[] args) throws Exception {
    String text = "How are you?";
    String targetLanguage = "zh-CN";
    GoogleCredentials credentials = GoogleCredentials.getApplicationDefault();
    credentials = credentials.createScoped(ImmutableList.of(TranslateScopes.TRANSLATE));
    Translate translateService = new Translate.Builder(
        GoogleNetHttpTransport.newTrustedTransport(),
        JacksonFactory.getDefaultInstance(),
        new HttpCredentialsAdapter(credentials))
        .setApplicationName("Translate-Service")
        .setTranslateRequestInitializer(
            new TranslateRequestInitializer("API Key"))
        .build();
    Translate.Translations.List list = translateService.new Translations().list(
        Arrays.asList(text), targetLanguage);
    list.setKey("API Key");
    String translation = list.execute().getTranslations().get(0).getTranslatedText();
    System.out.printf("Text: %s%nTranslation: %s%n", text, translation);
  }
}

示例二：翻译多条文本

import java.util.Arrays;
import com.google.api.client.googleapis.javanet.GoogleNetHttpTransport;
import com.google.api.client.json.jackson2.JacksonFactory;
import com.google.api.services.translate.Translate;
import com.google.api.services.translate.TranslateRequestInitializer;
import com.google.api.services.translate.TranslateScopes;
import com.google.auth.http.HttpCredentialsAdapter;
import com.google.auth.oauth2.GoogleCredentials;
import com.google.common.collect.ImmutableList;

public class TranslateTextDemo {
  public static void main(String[] args) throws Exception {
    String[] texts = {"How are you?", "What is your name?", "Where are you from?"};
    String targetLanguage = "zh-CN";
    GoogleCredentials credentials = GoogleCredentials.getApplicationDefault();
    credentials = credentials.createScoped(ImmutableList.of(TranslateScopes.TRANSLATE));
    Translate translateService = new Translate.Builder(
        GoogleNetHttpTransport.newTrustedTransport(),
        JacksonFactory.getDefaultInstance(),
        new HttpCredentialsAdapter(credentials))
        .setApplicationName("Translate-Service")
        .setTranslateRequestInitializer(
            new TranslateRequestInitializer("API Key"))
        .build();
    Translate.Translations.List list = translateService.new Translations().list(
        Arrays.asList(texts), targetLanguage);
    list.setKey("API Key");
    String[] translations = list.execute().getTranslations()
        .stream()
        .map(Translate.TranslationsResource::getTranslatedText)
        .toArray(String[]::new);
    System.out.printf("Text: %s%nTranslations: %s%n", Arrays.toString(texts), Arrays.toString(translations));
  }
}