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Visual Captcha WS

This component is based on Visual Captcha(http://visualcaptcha.net/) and aims to isolate backend and frontend behaviors using JQuery and HTML5 resources to client side and JAX-RS to server side.

Some changes must be done, like:

  1. Convert project to a Maven project
  2. Give a better treatment to client routes
  3. Add visual feedback to valid/invalid choices

It was developed using Java version 7 and JQuery 2.2.4.

Above are Java libraries necessary to use this component. (all of then are at WEB-INF/libs folder)

  • asm-3.1.jar
  • gson-2.1-javadoc.jar
  • gson-2.1-sources.jar
  • gson-2.1.jar
  • jersey-core-1.11.jar
  • jersey-json-1.11.jar
  • jersey-server-1.11.jar
  • jersey-servlet-1.11.jar
  • jsr311-api-1.1.1.jar

#Workflow

  • Client requests a new captcha
  • Server creates a list containing five image options and one audio option.
  • One of them is marked as the corret option.
  • The response is sent back as JSON.
  • JQuery component invokes Visual Captcha client and storage data into a temporary localStorage.
  • User selects an option.
  • JQuery component validates it.