如何在JSP中循环HashMap？

<%@ page import="java.util.HashMap" %>
<%@ page import="java.util.Iterator" %>
<%@ page import="java.util.Map" %>

<%
HashMap<String, String> hashMap = new HashMap<String, String>();
hashMap.put("key1", "value1");
hashMap.put("key2", "value2");
hashMap.put("key3", "value3");
%>

<%
Iterator<Map.Entry<String, String>> iterator = hashMap.entrySet().iterator();
while (iterator.hasNext()) {
    Map.Entry<String, String> entry = iterator.next();
    String key = entry.getKey();
    String value = entry.getValue();
%>
    <p><%= key %> : <%= value %></p>
<%
}
%>