从网上转的省市联动选择

<s:set name="area"
      value="#{'省':{'市'},
                    '北京':{'北京'},
                     '天津':{'天津'},
                     '河北':{'石家庄','唐山','秦皇岛','邯郸','邢台','保定','张家口','承德','沧州','廊坊','衡水'},
                     '山西':{'太原','大同','阳泉','长治','晋城','朔州','晋中','运城','忻州','临汾','吕梁'},
                     '内蒙古自制区':{'呼和浩特','包头','乌海','赤峰','通辽','鄂尔多斯','呼伦贝尔','巴彦淖尔','乌兰察布','兴安盟','锡林郭勒盟','阿拉善盟'},
                     '辽宁':{'沈阳','大连','鞍山','抚顺','本溪','丹东','锦州','营口','阜新','辽阳','盘锦','铁岭','朝阳','葫芦岛'},
                     '吉林':{'长春','吉林','四平','辽源','通化','白山','松原','白城','延边朝鲜族自治州'},
                     '黑龙江':{'哈尔滨','齐齐哈尔','鸡西','鹤岗','双鸭山','大庆','伊春','佳木斯','七台河','牡丹江','黑河','绥化','大兴安岭地区'},
                     '上海':{'上海'},
                     '江苏':{'南京','无锡','徐州','常州','苏州','南通','连云港','淮安','盐城','扬州','镇江','泰州','宿迁'},
                     '浙江':{'杭州','宁波','温州','嘉兴','湖州','绍兴','金华','衢州','舟山','台州','丽水'},
                     '安徽':{'合肥','芜湖','蚌埠','淮南','马鞍山','淮北','铜陵','安庆','黄山','滁州','阜阳','宿州','巢湖','六安','亳州','池州','宣城'},
                     '福建':{'福州','厦门','莆田','三明','泉州','漳州','南平','龙岩','宁德'},
                     '江西':{'南昌','景德镇','萍乡','九江','新余','鹰潭','赣州','吉安','宜春','抚州','上饶'},
                     '山东':{'济南','青岛','淄博','枣庄','东营','烟台','潍坊','济宁','泰安','威海','日照','莱芜','临沂','德州','聊城','滨州','菏泽'},
                     '河南':{'郑州','开封','洛阳','平顶山','安阳','鹤壁','新乡','焦作','濮阳','许昌','漯河','三门峡','南阳','商丘','信阳','周口','驻马店','济源'},
                     '湖北':{'武汉','黄石','十堰','宜昌','襄樊','鄂州','荆门','孝感','荆州','黄冈','咸宁','随州','恩施土家族苗族自治州','省直辖县级行政单位'},
                     '湖南':{'长沙','株洲','湘潭','衡阳','邵阳','岳阳','常德','张家界','益阳','郴州','永州','怀化','娄底','湘西土家族苗族自治州'},
                     '广东':{'广州','韶关','深圳','珠海','汕头','佛山','江门','湛江','茂名','肇庆','惠州','梅州','汕尾','河源','阳江','清远','东莞','中山','潮州','揭阳','云浮'},
                     '广西壮族自治区':{'南宁','柳州','桂林','梧州','北海','防城港','钦州','贵港','玉林','百色','贺州','河池','来宾','崇左'},
                     '海南':{'海口','三亚','省直辖县级行政单位'},
                     '重庆':{'重庆'},
                     '四川':{'成都','自贡','攀枝花','德阳','绵阳','广元','遂宁','内江','乐山','南充','眉山','宜宾','广安','达州','雅安','巴中','资阳','阿坝藏族羌族自治州','甘孜藏族自治州','凉山彝族自治州'},
                     '贵州':{'贵阳','六盘水','遵义','安顺','铜仁地区','黔西南布依族苗族自治州','毕节地区','黔东南苗族侗族自治州','黔南布依族苗族自治州','辽阳','盘锦','铁岭','朝阳','葫芦岛'},
                     '云南':{'昆明','曲靖','玉溪','保山','昭通','丽江','普洱','临沧','楚雄彝族自治州','红河哈尼族彝族自治州','文山壮族苗族自治州','西双版纳傣族自治州','大理白族自治州','德宏傣族景颇族自治州','怒江傈僳族自治州','迪庆藏族自治州'},
                    '西藏自治区':{'拉萨市','昌都地区','山南地区','日喀则地区','那曲地区','阿里地区','林芝地区'},
                     '陕西':{'西安','铜川','宝鸡','咸阳','渭南','延安','汉中','榆林','安康','商洛'},
                     '甘肃':{'兰州','嘉峪关','金昌','白银','天水','武威','张掖','平凉','酒泉','庆阳','定西','陇南','临夏回族自治州','甘南藏族自治州'},
                     '青海':{'西宁市','海东地区','海北藏族自治州','黄南藏族自治州','海南藏族自治州','果洛藏族自治州','玉树藏族自治州','海西蒙古族藏族自治州'},
                     '宁夏回族自治区':{'银川','石嘴山','吴忠','固原','中卫'},
                     '新疆维吾尔自治区':{'乌鲁木齐','克拉玛依','吐鲁番地区','哈密地区','昌吉回族自治州','博尔塔拉蒙古自治州','巴音郭楞蒙古自治州','阿克苏地区','克孜勒苏柯尔克孜自治州','喀什地区','和田地区','伊犁哈萨克自治州','塔城地区','阿勒泰地区','自治区直辖县级行政区划'},
                     '台湾':{'台北','高雄','基隆','台中','台南','新竹','嘉义'},
                     '香港特别行政区':{'香港'},
                     '澳门特别行政区':{'澳门'}
                 }" />
     <s:doubleselect label="地域" list="#area.keySet()" name="tmmmDept.province" doubleName="tmmmDept.city" doubleList="#area[top]" />