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Twitter Bot Template

This is a template for a very basic Twitter bot that uses OAuth 2.0 to be able to send tweets on another account's behalf.

Requirements

  • Java 17 or higher
  • Twitter Developer Account
    • You can get one here

Setup

SSL Certificate

This template temporarily spins up a webserver that listens for a callback from Twitter and reads the URL parameters for a code parameter. This code is then used to request an access token from Twitter.

For security purposes, this webserver uses SSL and requires a certificate. You can generate a self-signed one or obtain a certificate from another source.

If you have both .pem and .key files present, you will need to convert those to a .p12 file using the following command:

openssl pkcs12 -export -out [name of export].p12 -inkey [key] -in [crt]

You will need to specify a passphrase for the .p12 file. This will be used for the CERT_PASSPHRASE environment variable.

Environment Variables

  • API_KEY
    • Listed under "Keys and tokens" -> "Consumer Keys" on the Twitter Developer Portal
  • API_SECRET_KEY
    • Listed under "Keys and tokens" -> "Consumer Keys" on the Twitter Developer Portal
  • CERT_PASSPHRASE
    • The passphrase you used to encrypt the .p12 file containing your SSL certificate
  • CERT_PATH
    • The path to the .p12 file containing your SSL certificate
  • CLIENT_ID
    • Listed under "Keys and tokens" -> "OAuth 2.0 Client ID and Client Secret" on the Twitter Developer Portal
  • CLIENT_SECRET
    • Listed under "Keys and tokens" -> "OAuth 2.0 Client ID and Client Secret" on the Twitter Developer Portal
  • REDIRECT_URI
    • The redirect URI you specified under "Settings" -> "User Authentication Settings" on the Twitter Developer Portal. Ensure the port is added to the redirect URI in both the environment variable and on the Developer Portal.