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wynnteowynnteo
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Bael 9166 (#18337)
* BAEL-9166 added google translator * Split the test method to two * fix syntax error
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‎google-cloud/pom.xml

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<packaging>jar</packaging>
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<name>google-cloud</name>
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<description>Google Cloud Tutorials</description>
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<build>
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<plugins>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-compiler-plugin</artifactId>
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<configuration>
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<source>9</source>
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<target>9</target>
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</configuration>
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</plugin>
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</plugins>
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</build>
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<parent>
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<groupId>com.baeldung</groupId>
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<artifactId>google-cloud-storage</artifactId>
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<version>${google-cloud-storage.version}</version>
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</dependency>
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<dependency>
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<groupId>com.google.cloud</groupId>
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<artifactId>google-cloud-translate</artifactId>
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<version>${google-cloud-translate.version}</version>
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</dependency>
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<dependency>
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<groupId>org.projectlombok</groupId>
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<artifactId>lombok</artifactId>
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<properties>
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<google-cloud-storage.version>1.16.0</google-cloud-storage.version>
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<google-cloud-translate.version>2.58.0</google-cloud-translate.version>
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</properties>
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</project>

‎google-cloud/src/main/java/com/baeldung/google/cloud/translator/Translator.java

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package com.baeldung.google.cloud.translator;
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import java.io.FileInputStream;
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import java.io.IOException;
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import java.util.List;
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import java.util.stream.Collectors;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import com.google.auth.oauth2.GoogleCredentials;
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import com.google.cloud.translate.Language;
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import com.google.cloud.translate.Translate;
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import com.google.cloud.translate.TranslateOptions;
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import com.google.cloud.translate.Translation;
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import com.google.cloud.translate.v3.GlossaryName;
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import com.google.cloud.translate.v3.LocationName;
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import com.google.cloud.translate.v3.TranslateTextGlossaryConfig;
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import com.google.cloud.translate.v3.TranslateTextRequest;
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import com.google.cloud.translate.v3.TranslateTextResponse;
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import com.google.cloud.translate.v3.TranslationServiceClient;
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public class Translator {
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private static final Logger logger = LoggerFactory.getLogger(Translator.class);
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private static Translate translate;
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static {
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initializeTranslateClient();
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}
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public static void initializeTranslateClient() {
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if (translate == null) {
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try {
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GoogleCredentials credentials = GoogleCredentials.fromStream(
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new FileInputStream("src/main/resources/translator_permission.json")
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);
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translate = TranslateOptions.newBuilder()
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.setCredentials(credentials)
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.build()
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.getService();
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logger.info("Google Translate client initialized.");
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} catch (Exception e) {
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logger.error("Failed to initialize Google Translate client.", e);
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}
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}
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}
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public static void listSupportedLanguages() {
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try {
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List<Language> languages = translate.listSupportedLanguages();
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for (Language language : languages) {
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logger.info(String.format("Name: %s, Code: %s", language.getName(), language.getCode()));
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}
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} catch (Exception e) {
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// handle exception
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}
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}
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public static void listSupportedLanguagesWithSpecificLanguage() {
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try {
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List<Language> languages = translate.listSupportedLanguages(Translate.LanguageListOption.targetLanguage("es"));
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for (Language language : languages) {
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logger.info(String.format("Name: %s, Code: %s", language.getName(), language.getCode()));
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}
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} catch (Exception e) {
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// handle exception
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}
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}
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public static String translateText(String text, String targetLanguage) {
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String s = "";
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try {
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Translation translation = translate.translate(text, Translate.TranslateOption.targetLanguage(targetLanguage));
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s = translation.getTranslatedText();
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} catch (Exception e) {
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e.printStackTrace();
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// handle exception
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}
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return s;
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}
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public static String detectLanguage(String text) {
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return translate.detect(text)
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.getLanguage();
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}
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public static List<String> translateBatch(List<String> texts, String targetLanguage) {
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List<String> translationList = null;
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try {
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List<Translation> translations = translate.translate(texts, Translate.TranslateOption.targetLanguage(targetLanguage));
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translationList = translations.stream()
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.map(Translation::getTranslatedText)
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.collect(Collectors.toList());
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} catch (Exception e) {
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// handle exception
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}
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return translationList;
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}
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public static String translateWithGlossary(String projectId, String location, String text, String targetLanguage, String glossaryId) {
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String translatedText = "";
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try (TranslationServiceClient client = TranslationServiceClient.create()) {
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LocationName parent = LocationName.of(projectId, location);
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GlossaryName glossaryName = GlossaryName.of(projectId, location, glossaryId);
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TranslateTextRequest request = TranslateTextRequest.newBuilder()
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.setParent(parent.toString())
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.setTargetLanguageCode(targetLanguage)
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.addContents(text)
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.setGlossaryConfig(TranslateTextGlossaryConfig.newBuilder()
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.setGlossary(glossaryName.toString()).build()) // Attach glossary
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.build();
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TranslateTextResponse response = client.translateText(request);
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translatedText = response.getTranslations(0).getTranslatedText();
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} catch (IOException e) {
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// handle exception
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}
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return translatedText;
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}
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}

‎google-cloud/src/main/resources/translator_permission.json

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{
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"type": "service_account",
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"project_id": "baeldungtutorial",
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"private_key_id": "xxxxxx",
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"private_key": "-----BEGIN PRIVATE KEY-----\n XXXXXXX \n-----END PRIVATE KEY-----\n",
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"client_email": "[email protected]",
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"client_id": "xxxxxx",
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"auth_uri": "https://accounts.google.com/o/oauth2/auth",
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"token_uri": "https://oauth2.googleapis.com/token",
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"auth_provider_x509_cert_url": "https://www.googleapis.com/oauth2/v1/certs",
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"client_x509_cert_url": "https://www.googleapis.com/robot/v1/metadata/x509/translator%40baeldungtutorial.iam.gserviceaccount.com",
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"universe_domain": "googleapis.com"
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}

‎google-cloud/src/test/java/com/baeldung/google/cloud/translator/TranslatorLiveTest.java

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package com.baeldung.google.cloud.translator;
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import static org.junit.jupiter.api.Assertions.assertEquals;
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import java.util.List;
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import org.junit.jupiter.api.Test;
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public class TranslatorLiveTest {
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@Test
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void whenTranslateTextIsCalledWithEnglishTextAndFrenchTargetLanguage_thenReturnTranslatedText() {
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String originalText = "Hello, world!";
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String targetLanguage = "es";
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String expectedTranslatedText = "¡Hola Mundo!";
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String translatedText = Translator.translateText(originalText, targetLanguage);
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assertEquals(expectedTranslatedText, translatedText);
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}
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@Test
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void whenTranslateTextIsCalledWithEnglishHTMLAndFrenchTargetLanguage_thenReturnTranslatedHTML() {
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String originalHtml = "<p>Hello, world!</p>";
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String targetLanguage = "es";
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String expectedTranslatedHtml = "<p>¡Hola Mundo!</p>";
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String translatedHtml = Translator.translateText(originalHtml, targetLanguage);
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assertEquals(expectedTranslatedHtml, translatedHtml);
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}
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@Test
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void whenDetectLanguageIsCalledWithSpanishText_thenReturnSpanishLanguageCode() {
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String text = "Hola, mundo!";
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String expectedLanguageCode = "es";
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String detectedLanguage = Translator.detectLanguage(text);
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assertEquals(expectedLanguageCode, detectedLanguage);
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}
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@Test
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void whenTranslateBatchIsCalledWithMultipleTexts_thenReturnTranslatedTexts() {
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List<String> originalTexts = List.of("Apple", "Banana", "Orange");
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List<String> expectedTranslatedTexts = List.of("Pomme", "Banane", "Orange");
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List<String> translatedTexts = Translator.translateBatch(originalTexts, "fr");
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assertEquals(expectedTranslatedTexts, translatedTexts);
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}
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}

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