JSTL: Check if Submit was clicked

How can I check if the S开发者_高级运维ubmit button was clicked in JSTL?

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Make sure the button has a name attribute so that when it's pressed, an associated request parameter will be submitted. For JSTL, it then becomes as simple as checking any other request param: ${param.nameOfTheButton}.

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I dont think you can check if the submit button was clicked or not using JSTL. But you can know which submit button was clicked inside a servlet etc... for example if the button is

<input type="submit" name="Go"/>

for jsps use ${param.Go} for servlets use request.getParameter("Go");