EL表达式之遍历Map集合中的数据

在集合中创建一个Map对象

DataServlet中把请求转发给index.jsp然后在该jsp页面中使用EL表达式遍历Map

	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		Map map = new HashMap<>();
		map.put("tom", 9);
		map.put("rose", 18);
		map.put("lili", 27);
		request.setAttribute("map", map);
		request.getRequestDispatcher("/index.jsp").forward(request, response);
	}

<%@page import="com.zzu.vo.*"%>
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>


	
		
		
	
	
		
			${m.key } ---> ${m.value } 
		
		
	

页面内输出结果为：