El expressions are not parsed and output as is

today in learning JSP met under the premise that jars have EL expression as the output, not be parsed

found in the page directive lack isELIgnored = “false” add ok

<%@ page language="java" contentType="text/html; charset=utf-8" 
pageEncoding="utf-8" isELIgnored="false" %>

presumably servlet3.0 turns off parsing of EL expressions

by default

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