java - JSP Expression Language get parameter -

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I'm trying to get the string parameter "username" I have done some research with Expression Language , but there was no way to do this, let me get to $ {pageContext.request.parameter.username} Need something like that.

How to obtain a specific request parameter using only the expression language?

If you receive a feature from 'session', try it $ {username}.

If you get a parameter from 'request', then try $$ {param.username}.


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