网络上下文对象
在网络环境下,如下对象可以直接访问(注意:它们是对象,不是映射或者命名空间):
#request :直接访问与当前请求相关联的
javax.servlet.http.HttpServletRequest
对象。${#request.getAttribute('foo')} ${#request.getParameter('foo')} ${#request.getContextPath()} ${#request.getRequestName()} ...
#session :直接访问与当前请求相关联的
javax.servlet.http.HttpSession
对象。${#session.getAttribute('foo')} ${#session.id} ${#session.lastAccessedTime} ...
#servletContext:直接访问与当前请求相关联的
javax.servlet.ServletContext
对象。${#servletContext.getAttribute('foo')} ${#servletContext.contextPath} ...
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