How to access request in JspTags?

问题

I want to call request.getContextPath() inside a JSP tag which extends SimpleTagSupport, is there any way to do it?

回答1:

First get the PageContext by the inherited SimpleTagSupport#getJspContext() and then get the HttpServletRequest by PageContext#getRequest().

PageContext pageContext = (PageContext) getJspContext();  
HttpServletRequest request = (HttpServletRequest) pageContext.getRequest();  

来源：https://stackoverflow.com/questions/2098796/how-to-access-request-in-jsptags