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main.go
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main.go
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// Copyright 2019 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// [START language_quickstart]
// 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")
}
}
// [END language_quickstart]