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Google Cloud Natural Language API Go example

Authentication

  • Follow the instructions to set up your project and enable the Cloud Natural Language API.

  • From the Cloud Console, create a service account, download its json credentials file, then set the GOOGLE_APPLICATION_CREDENTIALS environment variable:

    export GOOGLE_APPLICATION_CREDENTIALS=/path/to/your-project-credentials.json

Run the sample

go run analyze.go <command> <text>

Where command is entities, sentiment, or syntax.

For example:

go run analyze.go entities "Renee French designed the Go gopher."

Prints something like this:

entities: <
  name: "Renee French"
  type: PERSON
  salience: 0.4693242
  mentions: <
    text: <
      content: "Renee French"
    >
  >
>
entities: <
  name: "Go"
  type: ORGANIZATION
  metadata: <
    key: "wikipedia_url"
    value: "http://en.wikipedia.org/wiki/Go_(programming_language)"
  >
  salience: 0.34126133
  mentions: <
    text: <
      content: "Go"
      begin_offset: 26
    >
  >
>
language: "en"