2.EL入门:param,paramValues

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<%@page import="com.ankangqiao.test.User"%><%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%><%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%><%@ taglib uri="http://java.sun.com/jsp/jstl/sql" prefix="sql" %><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>测试EL表达式</title></head><body><%// http://localhost:8080/JSTLTest?interesting=football&interesting=basketballString[] interestings = request.getParameterValues("interesting");for(String interesting : interestings) {response.getWriter().println(interesting + "<br/>");}%><c:forEach items="${paramValues.interesting }" var="interesting">${interesting }<br/></c:forEach><%--EL表达式可操作常量 变量 和隐式对象. 最常用的 隐式对象有${param}和${paramValues}. ${param}表示返回请求参数中单个字符串的值. ${paramValues}表示返回请求参数的一组值 --%></body></html>