ssh 实现三级联动

[Xiao181412]

//change事件
$(function(){
$("#hatprovince").change(function (){
$("#cityid option:not(:frist)").remove();//删除节点内容，以免累加
$.ajax({
type: "POST",
url: "HatProvincefindbyid",
data: {"provinceId":provinceId},
success: function(msg){
var obj=jQuery.parseJSON(msg);
for ( var int = 0; int < obj.length; int++) {
var op="<option value="cityId">"+ '<s:property value="cityName"/>'
+"</option>"
$("#cityid").append($op)
}
}
});
})
})
//struts2配置文件内容
<action name="HatProvince*" class="hatProvinceAction" method="{1}">
<result name="success" >test.jsp</result>
<result type="json">
<param name="findbyid">test.jsp</param>
</result>
</action>
//action内容
public String findbyID(){
hatCityService.findById(hatCity.getCityId());
return "findcityid";
}

[Xiao181412]

运行就是这样的数据 {"hatProvinceslist":[{"hatCities":[{"cityId":110100,"cityName":"市辖区","hatAreas":[{"areaId":110116,"areaName":"怀柔区","hatCity":null,"id":15},{"areaId":110115,"areaName":"大兴区","hatCity":null,"id":14},{"areaId":110107,"areaName":"石景山区","hatCity":null,"id":7},{"areaId":110114,"areaName":"昌平区","hatCity":null,"id":13},{"areaId":110108,"areaName":"海淀区","hatCity":null,"id":8},{"areaId":110105,"areaName":"朝阳区","hatCity":null,"id":5},{"areaId":110103,"areaName":"崇文区","hatCity":null,"id":3},{"areaId":110112,"areaName":"通州区","hatCity":null,"id":11},{"areaId":110102,"areaName":"西城区","hatCity":null,"id":2},{"areaId":110106,"areaName":"丰台区","hatCity":null,"id":6},{"areaId":110113,"areaName":"顺义区","hatCity":null,"id":12},{"areaId":110117,"areaName":"平谷区","hatCity":null,"id":16},{"areaId":110101,"areaName":"东城区","hatCity":null,"id":1},{"areaId":110111,"areaName":"房山区","hatCity":null,"id":10},{"areaId":110109,"areaName":"门头沟区","hatCity":null,"id":9},{"areaId":110104,"areaName":"宣武区","hatCity":null,"id":4}],"hatProvince":null},{"cityId":110200,"cityName":"县","hatAreas":[{"areaId":110229,"areaName":"延庆县","hatCity":null,"id":18},{"areaId":110228,"areaName":"密云县","hatCity":null,"id":17}],"hatProvince":null}],"province":"北京市","provinceId":110000},{"hatCities":[{"cityId":120200,"cityName":"县","hatAreas":[{"areaId":120221,"areaName":"宁河县","hatCity":null,"id":34},{"areaId":120223,"areaName":"静海县","hatCity":null,"id":35},{"areaId":120225,"areaName":"蓟　县","hatCity":null,"id":36}],"hatProvince":null},{"cityId":120100,"cityName":"市辖区","hatAreas":[{"areaId":120114,"areaName":"武清区","hatCity":null,"id":32},{"areaId":120105,"areaName":"河北区","hatCity":null,"id":23},{"areaId":120104,"areaName":"南开区","hatCity":null,"id":22},{"areaId":120112,"areaName":"津南区","hatCity":null,"id":30},{"areaId":120106,"areaName":"红桥区","hatCity":null,"id":24},{"areaId":120103,"areaName":"河西区","hatCity":null,"id":21},{"areaId":120113,"areaName":"北辰区","hatCity":null,"id":31},{"areaId":120101,"areaName":"和平区","hatCity":null,"id":19},{"areaId":120109,"areaName":"大港区","hatCity":null,"id":27},{"areaId":120110,"areaName":"东丽区","hatCity":null,"id":28},{"areaId":120108,"areaName":"汉沽区","hatCity":null,"id":26},{"areaId":120111,"areaName":"西青区","hatCity":null,"id":29},{"areaId":120102,"areaName":"河东区","hatCity":null,"id":20},{"areaId":120107,"areaName":"塘沽区","hatCity":null,"id":25},{"areaId":120115,"areaName":"宝坻区","hatCity":null,"id":33}],"hatProvince":null}],"province":"天津市","provinceId":120000},{"hatCities":[{"cityId":131100,"cityName":"衡水市","hatAreas":[{"areaId":131123,"areaName":"武强县","hatCity":null,"id":212},{"areaId":131181,"areaName":"冀州市","hatCity":null,"id":218},{"areaId":131124,"areaName":"饶阳县","hatCity":null,"id":213},{"areaId":131125,"areaName":"安平县","hatCity":null,"id":214},{"areaId":131127,"areaName":"景　县","hatCity":null,"id":216},{"areaId":131121,"areaName":"枣强县","hatCity":null,"id":210},{"areaId":131101,"areaName":"市辖区","hatCity":null,"id":208},{"areaId":131122,"areaName":"武邑县","hatCity":null,"id":211},{"areaId":131182,"areaName":"深州市","hatCity":null,"id":219},{"areaId":131102,"areaName":"桃城区","hatCity":null,"id":209},{"areaId":131126,"areaName":"故城县","hatCity":null,"id":215},{"areaId":131128,"areaName":"阜城