Realiza análisis de opiniones mediante bibliotecas cliente.

En esta página, se muestra cómo comenzar a usar la API de Cloud Natural Language en el lenguaje de programación de tu preferencia con las bibliotecas cliente de Google Cloud.

Antes de comenzar

  1. Sign in to your Google Account.

    If you don't already have one, sign up for a new account.

  2. Install the Google Cloud CLI.

  3. Si usas un proveedor de identidad externo (IdP), primero debes acceder a gcloud CLI con tu identidad federada.

  4. Para inicializar gcloud CLI, ejecuta el siguiente comando: 

    gcloud init

  5. Create or select a Google Cloud project.

    • Create a Google Cloud project:

      gcloud projects create PROJECT_ID

      Replace PROJECT_ID with a name for the Google Cloud project you are creating.

    • Select the Google Cloud project that you created:

      gcloud config set project PROJECT_ID

      Replace PROJECT_ID with your Google Cloud project name.

  6. Verify that billing is enabled for your Google Cloud project.

  7. Enable the Cloud Natural Language API: 

    gcloud services enable language.googleapis.com

  8. Create local authentication credentials for your user account: 

    gcloud auth application-default login

    If an authentication error is returned, and you are using an external identity provider (IdP), confirm that you have signed in to the gcloud CLI with your federated identity.

  9. Install the Google Cloud CLI.

  10. Si usas un proveedor de identidad externo (IdP), primero debes acceder a gcloud CLI con tu identidad federada.

  11. Para inicializar gcloud CLI, ejecuta el siguiente comando: 

    gcloud init

  12. Create or select a Google Cloud project.

    • Create a Google Cloud project:

      gcloud projects create PROJECT_ID

      Replace PROJECT_ID with a name for the Google Cloud project you are creating.

    • Select the Google Cloud project that you created:

      gcloud config set project PROJECT_ID

      Replace PROJECT_ID with your Google Cloud project name.

  13. Verify that billing is enabled for your Google Cloud project.

  14. Enable the Cloud Natural Language API: 

    gcloud services enable language.googleapis.com

  15. Create local authentication credentials for your user account: 

    gcloud auth application-default login

    If an authentication error is returned, and you are using an external identity provider (IdP), confirm that you have signed in to the gcloud CLI with your federated identity.

    16. Instala la biblioteca cliente

    Go

    go get cloud.google.com/go/language/apiv1

    Java

    If you are using Maven, add the following to your pom.xml file. For more information about BOMs, see The Google Cloud Platform Libraries BOM.

    <dependencyManagement>
  <dependencies>
    <dependency>
      <groupId>com.google.cloud</groupId>
      <artifactId>libraries-bom</artifactId>
      <version>26.66.0</version>
      <type>pom</type>
      <scope>import</scope>
    </dependency>
  </dependencies>
</dependencyManagement>

<dependencies>
  <dependency>
    <groupId>com.google.cloud</groupId>
    <artifactId>google-cloud-language</artifactId>
  </dependency>
</dependencies>

    If you are using Gradle, add the following to your dependencies:

    implementation 'com.google.cloud:google-cloud-language:2.73.0'

    If you are using sbt, add the following to your dependencies:

    libraryDependencies += "com.google.cloud" % "google-cloud-language" % "2.73.0"

    If you're using Visual Studio Code, IntelliJ, or Eclipse, you can add client libraries to your project using the following IDE plugins:

    The plugins provide additional functionality, such as key management for service accounts. Refer to each plugin's documentation for details.

    Node.js

    Antes de instalar la biblioteca, asegúrate de haber preparado tu entorno para el desarrollo en Node.js.

    npm install @google-cloud/language

    Python

    Antes de instalar la biblioteca, asegúrate de haber preparado tu entorno para el desarrollo en Python.

    pip install --upgrade google-cloud-language

    Analizar un texto

    Ahora puedes usar la API de Natural Language para analizar un texto. Ejecuta el siguiente código para realizar tu primer análisis de opiniones de texto:

    Go

    
// Sample language-quickstart uses the Google Cloud Natural API to analyze the
// sentiment of "Hello, world!".
package main

import (
	"context"
	"fmt"
	"log"

	language "cloud.google.com/go/language/apiv1"
	"cloud.google.com/go/language/apiv1/languagepb"
)

func main() {
	ctx := context.Background()

	// Creates a client.
	client, err := language.NewClient(ctx)
	if err != nil {
		log.Fatalf("Failed to create client: %v", err)
	}
	defer client.Close()

	// Sets the text to analyze.
	text := "Hello, world!"

	// Detects the sentiment of the text.
	sentiment, err := client.AnalyzeSentiment(ctx, &languagepb.AnalyzeSentimentRequest{
		Document: &languagepb.Document{
			Source: &languagepb.Document_Content{
				Content: text,
			},
			Type: languagepb.Document_PLAIN_TEXT,
		},
		EncodingType: languagepb.EncodingType_UTF8,
	})
	if err != nil {
		log.Fatalf("Failed to analyze text: %v", err)
	}

	fmt.Printf("Text: %v\n", text)
	if sentiment.DocumentSentiment.Score >= 0 {
		fmt.Println("Sentiment: positive")
	} else {
		fmt.Println("Sentiment: negative")
	}
}

    Java

    // Imports the Google Cloud client library
import com.google.cloud.language.v1.Document;
import com.google.cloud.language.v1.Document.Type;
import com.google.cloud.language.v1.LanguageServiceClient;
import com.google.cloud.language.v1.Sentiment;

public class QuickstartSample {
  public static void main(String... args) throws Exception {
    // Instantiates a client
    try (LanguageServiceClient language = LanguageServiceClient.create()) {

      // The text to analyze
      String text = "Hello, world!";
      Document doc = Document.newBuilder().setContent(text).setType(Type.PLAIN_TEXT).build();

      // Detects the sentiment of the text
      Sentiment sentiment = language.analyzeSentiment(doc).getDocumentSentiment();

      System.out.printf("Text: %s%n", text);
      System.out.printf("Sentiment: %s, %s%n", sentiment.getScore(), sentiment.getMagnitude());
    }
  }
}

    Node.js

    Antes de ejecutar el ejemplo, asegúrate de haber preparado tu entorno para el desarrollo en Node.js.

    async function quickstart() {
  // Imports the Google Cloud client library
  const language = require('@google-cloud/language');

  // Instantiates a client
  const client = new language.LanguageServiceClient();

  // The text to analyze
  const text = 'Hello, world!';

  const document = {
    content: text,
    type: 'PLAIN_TEXT',
  };

  // Detects the sentiment of the text
  const [result] = await client.analyzeSentiment({document: document});
  const sentiment = result.documentSentiment;

  console.log(`Text: ${text}`);
  console.log(`Sentiment score: ${sentiment.score}`);
  console.log(`Sentiment magnitude: ${sentiment.magnitude}`);
}

    Python

    Antes de ejecutar el ejemplo, asegúrate de haber preparado tu entorno para el desarrollo en Python.

    # Imports the Google Cloud client library.
from google.cloud import language_v1

# Instantiates a client.
client = language_v1.LanguageServiceClient()

# The text to analyze.
text = "Hello, world!"
document = language_v1.types.Document(
    content=text, type_=language_v1.types.Document.Type.PLAIN_TEXT
)

# Detects the sentiment of the text.
sentiment = client.analyze_sentiment(
    request={"document": document}
).document_sentiment

print(f"Text: {text}")
print(f"Sentiment: {sentiment.score}, {sentiment.magnitude}")

    ¡Felicitaciones! Enviaste tu primera solicitud a la API de Natural Language.

    ¿Cómo fue?

    Limpia

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    ¿Qué sigue?