使用 Cloud Translation 高级版翻译文本

本文档将展示如何使用 Cloud Translation 高级版翻译示例文本。

准备工作

在开始使用 Cloud Translation API 之前，您必须具有启用了 Cloud Translation API 的项目，并且必须具有适当的凭据。您还可以安装常用编程语言的客户端库，以便调用 API。如需了解详情，请参阅设置页面。

翻译文本示例

以下示例演示了如何使用 Cloud Translation 高级版将文本翻译成给定的目标语言。

REST

使用 curl 或 PowerShell 发出请求。

源语言和目标语言使用 ISO-639 代码标识。源语言为英语 (en)，目标语言为俄语 (ru)。查询格式以“text”（表示纯文本）标示。

在使用任何请求数据之前，请先进行以下替换：

  • PROJECT_NUMBER_OR_ID：您的 Google Cloud 项目的数字或字母数字 ID

HTTP 方法和网址：

POST https://translation.googleapis.com/v3/projects/PROJECT_NUMBER_OR_ID:translateText

请求 JSON 正文：

{
  "sourceLanguageCode": "en",
  "targetLanguageCode": "ru",
  "contents": ["Dr. Watson, come here!"],
  "mimeType": "text/plain"
}

如需发送您的请求，请展开以下选项之一：

您应该收到类似以下内容的 JSON 响应：

{
  "translations": [{
    "translatedText": "Доктор Ватсон, иди сюда!"
  }]
}

Go

试用此示例之前，请按照 Cloud Translation 快速入门：使用客户端库中的 Go 设置说明进行操作。 如需了解详情，请参阅 Cloud Translation Go API 参考文档。

如需向 Cloud Translation 进行身份验证，请设置应用默认凭据。如需了解详情，请参阅为本地开发环境设置身份验证。 

// Imports the Google Cloud Translation library
import (
	"context"
	"fmt"
	"io"

	translate "cloud.google.com/go/translate/apiv3"
	"cloud.google.com/go/translate/apiv3/translatepb"
)


func translateText(w io.Writer, projectID string, sourceLang string, targetLang string, text string) error {
	// projectID := "my-project-id"
	// sourceLang := "en-US"
	// targetLang := "fr"
	// text := "Text you wish to translate"

	// Instantiates a client
	ctx := context.Background()
	client, err := translate.NewTranslationClient(ctx)
	if err != nil {
		return fmt.Errorf("NewTranslationClient: %w", err)
	}
	defer client.Close()

	// Construct request
	req := &translatepb.TranslateTextRequest{
		Parent:             fmt.Sprintf("projects/%s/locations/global", projectID),
		SourceLanguageCode: sourceLang,
		TargetLanguageCode: targetLang,
		MimeType:           "text/plain", // Mime types: "text/plain", "text/html"
		Contents:           []string{text},
	}

	resp, err := client.TranslateText(ctx, req)
	if err != nil {
		return fmt.Errorf("TranslateText: %w", err)
	}

	// Display the translation for each input text provided
	for _, translation := range resp.GetTranslations() {
		fmt.Fprintf(w, "Translated text: %v\n", translation.GetTranslatedText())
	}

	return nil
}

Java

试用此示例之前，请按照 Cloud Translation 快速入门：使用客户端库中的 Java 设置说明进行操作。 如需了解详情，请参阅 Cloud Translation Java API 参考文档。

如需向 Cloud Translation 进行身份验证，请设置应用默认凭据。如需了解详情，请参阅为本地开发环境设置身份验证。 

// Imports the Google Cloud Translation library.
import com.google.cloud.translate.v3.LocationName;
import com.google.cloud.translate.v3.TranslateTextRequest;
import com.google.cloud.translate.v3.TranslateTextResponse;
import com.google.cloud.translate.v3.Translation;
import com.google.cloud.translate.v3.TranslationServiceClient;
import java.io.IOException;


public class TranslateText {

  // Set and pass variables to overloaded translateText() method for translation.
  public static void translateText() throws IOException {
    // TODO(developer): Replace these variables before running the sample.
    String projectId = "YOUR-PROJECT-ID";
    // Supported Languages: https://cloud.google.com/translate/docs/languages
    String targetLanguage = "your-target-language";
    String text = "your-text";
    translateText(projectId, targetLanguage, text);
  }

  // Translate text to target language.
  public static void translateText(String projectId, String targetLanguage, String text)
      throws IOException {

    // Initialize client that will be used to send requests. This client only needs to be created
    // once, and can be reused for multiple requests. After completing all of your requests, call
    // the "close" method on the client to safely clean up any remaining background resources.
    try (TranslationServiceClient client = TranslationServiceClient.create()) {
      // Supported Locations: `global`, [glossary location], or [model location]
      // Glossaries must be hosted in `us-central1`
      // Custom Models must use the same location as your model. (us-central1)
      LocationName parent = LocationName.of(projectId, "global");

      // Supported Mime Types: https://cloud.google.com/translate/docs/supported-formats
      TranslateTextRequest request =
          TranslateTextRequest.newBuilder()
              .setParent(parent.toString())
              .setMimeType("text/plain")
              .setTargetLanguageCode(targetLanguage)
              .addContents(text)
              .build();

      TranslateTextResponse response = client.translateText(request);

      // Display the translation for each input text provided
      for (Translation translation : response.getTranslationsList()) {
        System.out.printf("Translated text: %s\n", translation.getTranslatedText());
      }
    }
  }
}

Node.js

试用此示例之前，请按照 Cloud Translation 快速入门：使用客户端库中的 Node.js 设置说明进行操作。 如需了解详情，请参阅 Cloud Translation Node.js API 参考文档。

如需向 Cloud Translation 进行身份验证，请设置应用默认凭据。如需了解详情，请参阅为本地开发环境设置身份验证。 

/**
 * TODO(developer): Uncomment these variables before running the sample.
 */
// const projectId = 'YOUR_PROJECT_ID';
// const location = 'global';
// const text = 'text to translate';

// Imports the Google Cloud Translation library
const {TranslationServiceClient} = require('@google-cloud/translate');

// Instantiates a client
const translationClient = new TranslationServiceClient();

async function translateText() {
  // Construct request
  const request = {
    parent: `projects/${projectId}/locations/${location}`,
    contents: [text],
    mimeType: 'text/plain', // mime types: text/plain, text/html
    sourceLanguageCode: 'en',
    targetLanguageCode: 'sr-Latn',
  };

  // Run request
  const [response] = await translationClient.translateText(request);

  for (const translation of response.translations) {
    console.log(`Translation: ${translation.translatedText}`);
  }
}

translateText();

Python

试用此示例之前，请按照 Cloud Translation 快速入门：使用客户端库中的 Python 设置说明进行操作。 如需了解详情，请参阅 Cloud Translation Python API 参考文档。

如需向 Cloud Translation 进行身份验证，请设置应用默认凭据。如需了解详情，请参阅为本地开发环境设置身份验证。 

# Imports the Google Cloud Translation library
import os

from google.cloud import translate_v3

PROJECT_ID = os.environ.get("GOOGLE_CLOUD_PROJECT")


# Initialize Translation client
def translate_text(
    text: str = "YOUR_TEXT_TO_TRANSLATE",
    language_code: str = "fr",
) -> translate_v3.TranslationServiceClient:
    """Translating Text from English.
    Args:
        text: The content to translate.
        language_code: The language code for the translation.
            E.g. "fr" for French, "es" for Spanish, etc.
            Available languages: https://cloud.google.com/translate/docs/languages#neural_machine_translation_model
    """

    client = translate_v3.TranslationServiceClient()
    parent = f"projects/{PROJECT_ID}/locations/global"
    # Translate text from English to chosen language
    # Supported mime types: # https://cloud.google.com/translate/docs/supported-formats
    response = client.translate_text(
        contents=[text],
        target_language_code=language_code,
        parent=parent,
        mime_type="text/plain",
        source_language_code="en-US",
    )

    # Display the translation for each input text provided
    for translation in response.translations:
        print(f"Translated text: {translation.translated_text}")
    # Example response:
    # Translated text: Bonjour comment vas-tu aujourd'hui?

    return response

其他语言

C#：请按照客户端库页面上的 C# 设置说明操作，然后访问 .NET 版 Cloud Translation 参考文档。

PHP：请按照客户端库页面上的 PHP 设置说明操作，然后访问 PHP 版 Cloud Translation 参考文档。

Ruby：请按照客户端库页面上的 Ruby 设置说明操作，然后访问 Ruby 版 Cloud Translation 参考文档。

其他资源