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How to retrieve the parameters from a url in vaadin?  RSS feed

Sandy Marar
Posts: 16
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Im asking a question in vaadin in this forum is because of the reason that its a servlet based engine.Im developing a facebook app in vaadin .I am using OAuth2.0 authentication as its authetication protocol.I am stuck in a particular place.After providing in the credentials of the facebook account it gets redirected to a page which is of another website followed by a parameter called "code".The url is somewhat like this


What I want is to get the value of the parameter called code.Any would be greatly appreciated!...Forgive me if this is the wrong forum to ask this question.
Consider Paul's rocket mass heater.
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