CityMapjava 文件里：
package com.tanzhou.util;
import java.util.LinkedHashMap;
import java.util.Map;
import javax.tools.JavaCompiler;
/**
* 城市数据的组织类
* @author Ming
* @version 1.0
* 2015-2-7
*
*/
public class CityMap implements java.io.Serializable{
/**
* 全国（省，直辖市，自治区，特别行政区）映射集合
*/
public static Map<String, String[]> model = new LinkedHashMap<String, String[]>();
static{
model.put("上海", new String[]{"上海"});
model.put("北京", new String[]{"北京"});
model.put("天津", new String[]{"天津"});
model.put("重庆", new String[]{"重庆"});
model.put("黑龙江", new String[]{"哈尔滨","齐齐哈尔","牡丹江","大庆","伊春","双鸭山","鹤岗","鸡西","佳木斯","七台河","黑河","绥化","大兴安岭"});
model.put("吉林", new String[]{"长春","延边","吉林","白山","白城","四平","松原","辽源","大安","通化"});
model.put("辽宁", new String[]{"沈阳","大连","葫芦岛","旅顺","本溪","抚顺","铁岭","辽阳","营口","阜新","朝阳","锦州","丹东","鞍山"});
model.put("内蒙古", new String[]{"呼和浩特","呼伦贝尔","锡林浩特","包头","赤峰","海拉尔","乌海","鄂尔多斯","通辽"});
model.put("河北", new String[]{"石家庄","唐山","张家口","廊坊","邢台","邯郸","沧州","衡水","承德","保定","秦皇岛"});
model.put("河南", new String[]{"郑州","开封","洛阳","平顶山","焦作","鹤壁","新乡","安阳","濮阳","许昌","漯河","三门峡","南阳","商丘","信阳","周口","驻马店"});
model.put("山东", new String[]{"济南","青岛","淄博","威海","曲阜","临沂","烟台","枣庄","聊城","济宁","菏泽","泰安","日照","东营","德州","滨州","莱芜","潍坊"});
model.put("山西", new String[]{"太原","阳泉","晋城","晋中","临汾","运城","长治","朔州","忻州","大同","吕梁"});
model.put("江苏", new String[]{"南京","苏州","昆山","南通","太仓","吴县","徐州","宜兴","镇江","淮安","常熟","盐城","泰州","无锡","连云港","扬州","常州","宿迁"});
model.put("安徽", new String[]{"合肥","巢湖","蚌埠","安庆","六安","滁州","马鞍山","阜阳","宣城","铜陵","淮北","芜湖","毫州","宿州","淮南","池州"});
model.put("陕西", new String[]{"西安","韩城","安康","汉中","宝鸡","咸阳","榆林","渭南","商洛","铜川","延安"});
model.put("宁夏", new String[]{"银川","固原","中卫","石嘴山","吴忠"});
model.put("甘肃", new String[]{"兰州","白银","庆阳","酒泉","天水","武威","张掖","甘南","临夏","平凉","定西","金昌"});
model.put("青海", new String[]{"西宁","海北","海西","黄南","果洛","玉树","海东","海南"});
model.put("湖北", new String[]{"武汉","宜昌","黄冈","恩施","荆州","神农架","十堰","咸宁","襄樊","孝感","随州","黄石","荆门","鄂州"});
model.put("湖南", new String[]{"长沙","邵阳","常德","郴州","吉首","株洲","娄底","湘潭","益阳","永州","岳阳","衡阳","怀化","韶山","张家界"});
model.put("浙江", new String[]{"杭州","湖州","金华","宁波","丽水","绍兴","雁荡山","衢州","嘉兴","台州","舟山","温州"});
model.put("江西", new String[]{"南昌","萍乡","九江","上饶","抚州","吉安","鹰潭","宜春","新余","景德镇","赣州"});
model.put("福建", new String[]{"福州","厦门","龙岩","南平","宁德","莆田","泉州","三明","漳州"});
model.put("贵州", new String[]{"贵阳","安顺","赤水","遵义","铜仁","六盘水","毕节","凯里","都匀"});
model.put("四川", new String[]{"成都","泸州","内江","凉山","阿坝","巴中","广元","乐山","绵阳","德阳","攀枝花","雅安","宜宾","自贡","甘孜州","达州","资阳","广安","遂宁","眉山","南充"});
model.put("广东", new String[]{"广州","深圳","潮州","韶关","湛江","惠州","清远","东莞","江门","茂名","肇庆","汕尾","河源","揭阳","梅州","中山","德庆","阳江","云浮","珠海","汕头","佛山"});
model.put("广西", new String[]{"南宁","桂林","阳朔","柳州","梧州","玉林","桂平","贺州","钦州","贵港","防城港","百色","北海","河池","来宾","崇左"});
model.put("云南", new String[]{"昆明","保山","楚雄","德宏","红河","临沧","怒江","曲靖","思茅","文山","玉溪","昭通","丽江","大理"});
model.put("海南", new String[]{"海口","三亚","儋州","琼山","通什","文昌"});
model.put("新疆", new String[]{"乌鲁木齐","阿勒泰","阿克苏","昌吉","哈密","和田","喀什","克拉玛依","石河子","塔城","库尔勒","吐鲁番","伊宁"});
}
}
///////////////////////////////////////////////////////////////////////////
typeService.jsp文件里：
<%@page import="com.tanzhou.util.CityMap"%>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<%
// 通过省份名称 获取 市级 名称
request.setCharacterEncoding("UTF-8");
String type = request.getParameter("type"); // type index.jsp页面传过来的 省份名称
System.out.println("===:"+type);
String[] citys = CityMap.model.get(type); // 通过key 获取value ;citys 装载的就是一个省份下的所有市
%>
<select name="typeID" id="typeID">
<%
for(String city : citys){
%>
<option value='<%= city%>'><%= city%></option>
<% } %>
</select>
////////////////////////////////////////////////////////////////////
index.jsp文件里：
<%@page import="com.tanzhou.util.CityMap,java.util.*"%>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>使用AJAX级联选择框实现省市关联</title>
</head>
<script language="javascript">
var xmlHttp;
//创建XMLHttpRequest
function createXMLHttpRequest(){
// 初始化对象并发出XMLHttpRequest请求
xmlHttp = false;
if(window.XMLHttpRequest){ // 获取其他除IE以外的浏览器
xmlHttp = new XMLHttpRequest();
}else if(window.ActiveXObject){ // IE浏览器
xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
}
}
function getCity(type){
//alert(type);
// 1、创建XMLHttpRequest
createXMLHttpRequest();
// 2、回调函数
xmlHttp.onreadystatechange =insertContents;
// 3、呼叫服务器
xmlHttp.open("POST", "typeService.jsp", true);
xmlHttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
// 4、发送请求道服务器
xmlHttp.send("type="+type);
}
// 回调函数
function insertContents(){
if(xmlHttp.readyState==4){
if(xmlHttp.status==200){
alert(xmlHttp.responseText);
subType.innerHTML = xmlHttp.responseText; // text ,xml ,json html
}else{
alert('您请求的页面发现错误！');
}
}
}
</script>
<body>
<table width="600" border="0" align="center" cellpadding="-2" cellspacing="-2" bordercolordark="#FFFFFF">
<form action="" method="post" name="form1">
<tr>
<td width="20%" height="27">联系地址：</td>
<td height="27" colspan="3">
<input type="text" id="address" size="58">
</td>
</tr>
<tr>
<td height="27">选择省：</td>
<td width="35%" height="27">
<select id="type" onchange="getCity(this.value)">
<%
Set<String> keys = CityMap.model.keySet(); // 获取LinkedHashMap容器的所有key值
for(String key:keys){
out.println("<option value='"+key+"'>"+key+"</option>");
}
%>
</select></td>
<td width="18%" height="27">选择城市：</td>
<td width="42%" height="27" id="subType"> </td>
</tr>
<tr>
<td height="41">联系电话：</td>
<td height="41">
<input type="text" id="phone">
</td>
<td height="41">联系人：</td>
<td height="41">
<input size="8" type="text" id="linkMan">
</td>
</tr>
<tr>
<td height="103">附言：</td>
<td colspan="3">
<textarea cols="45" rows="5" id="introduce"></textarea>
</td>
</tr>
<tr>
<td height="28" colspan="4" align="center">
<input type="button" value="提交" onClick="mycheck();">
<input type="reset" value="重置">
</td>
</tr>
</form>
</table>
<script language="javascript">
getCity(form1.type.value);
</script>
</body>
</html>
