转自：http://blog.csdn.net/SLN2432713617/article/details/79412896

一、全国省市区信息，MySQL数据库记录：

从 http://blog.csdn.net/SLN2432713617/article/details/79412896 复制数据到MySQL中导入，导入成功如下：

表名：T_Area |字段：areaId int(20) primary key,areaCode varchar(50),areaName varchar(20),level tinyint(4),cityCode varchar(50),center varchar(50),parentId int(20)

二、area.html页面

1、导入jquery

2、body主体

3、jquery 部分：获取市、获取区县

1) 获取市部分

$("#province_id").change(function(){

var province_id = $(this).val();

$.ajax({

type:"POST",

dataType:"json",

url:"getCity",

data:"{province_id:province_id}",

success:function(data){

var city = data.city;

var option = $("");

$(option).val("0");

$(option).html("请选择");

var option1 = $("");

$(option1).val("0");

$(option1).html("请选择");

$("#city_id").html(option);

$("#district_id").html(option1);

for(var i in city){

var option = $("");

$(option).val(city[i]['areaId']);

$(option).html(city[i]['areaName']);

$("city_id").append(option);

}

}

});

});

2)获取区县部分

$("#city_id").change(function(){

var city_id = $(this).val();

$.ajax({

type:'POST',

dataType:'json',

url:'getDistrict',

data:{city_id:city_id},

success:function(){

var district = data.district;

var option = $("");

$(option).val("0");

$(option).html("请选择");

$("district_id").html(option);

for(var i in district){

var option = $("");

$(option).val(district[i]['areaId'];

$(option).val(district[i]['areaName'];

$("#district_id").append(option);

}

}

});

});

三、控制器部分:area、getCity、getDistrict

1、area方法:

public function area(){

$provice = DB::name('area')->where('parentId','-1')->select();

$this->assign('province_list',$province);

return $this->fetch('area');

}

2、getCity方法:

public function getCity(){

$where['parentId'] = input('province_id');

$where['level'] = 2;

$list = DB::name('area')->where($where)->select();

$data = array('status'=>0,'city'=>$list);//print_r($data);

header("Content-type:application/json");

exit(json_encode($data));

}

3、getDistrict方法:

public function getDistrict(){

$where['parentId'] = input('city_id');

$where['level'] = 3;

$list = DB::name('area')->where($where)->select();

$data = array('status' => 0,'district'=>$list);

header("Content-type:application/json");

exit(json_encode($data));

}

四、运行结果