利用迭代器输出数据时，怎么输出键值呢

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8" import="java.util.*,student.info.Student" %>
<!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=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
<%
	Map<String, Student> map=new HashMap();
	map.put("1", new Student("11071010","赵明",78));
	map.put("2", new Student("11071011","李雷",100));
	map.put("3", new Student("11071012","韩梅梅",90));
	map.put("4", new Student("11071013","大熊",80));
	map.put("5", new Student("11071014","李静香",92));
	map.put("6", new Student("11071015","胖虎",42));	
	//Map<String,Student> map=DBUtil.map;
	Iterator<Student> it=map.values().iterator();
	int id=1;
	while(it.hasNext()){%>
	第<%=id %>条：<%out.print(it.next());%>
	</br>
	<% id++;
	}
	%>
</body>
</html>

package student.info;
public class Student {
	private String stuId, stuName;
	private double stuScore;
	
	public Student(String stuId, String stuName, double stuScore) {
		super();
		this.stuId = stuId;
		this.stuName = stuName;
		this.stuScore = stuScore;
	}
	public String getStuId() {
		return stuId;
	}
	public void setStuId(String stuId) {
		this.stuId = stuId;
	}
	public String getStuName() {
		return stuName;
	}
	public void setStuName(String stuName) {
		this.stuName = stuName;
	}
	public double getStuScore() {
		return stuScore;
	}
	public void setStuScore(double stuScore) {
		this.stuScore = stuScore;
	}
	@Override
	public String toString() {
		return "Student [id=" + stuId + ", name=" + stuName + ", score=" + stuScore + "]";
	}		
}

2-6编程要求在jsp文件中实例化对象，并存入map集合中，利用迭代器将数据输出。请问老师，利用迭代器只能输出学生信息，怎么把对应的键值输出呢

foroying 2018-05-17

源自：JSP内置对象 2-6 自由编程