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Google Recaptcha

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Google launched new reCaptcha for effective detection of robots. Every day hackers decrypting captchas. It became difficult for organizations to get protection from bots. Google has given solution to this problem with new reCaptcha. In this article, I am going to explain the implementation of reCaptcha with Java

How reCaptcha Works

  1. Developer has to register their website for Google recaptcha. Then developer will get application key.
  2. Developer has to integrate reCaptcha with registered website.
  3. Whenever user clicks on "I am not a robot, Google reCaptcha script will generate input value with name g-recaptcha-response. 
  4. Whenever user submits the form, The website server receives code with parameter recaptcha-response.
  5. Now developer has to verify the code at server side by sending one get request to google recaptcha server with application secret key.

Libraries

Get Google GSON Java Library to handle JSON responses.

Get reCaptcha Key

Click here to register your website and get key for your web application


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