省市区三级联动地址保存

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http://blog.csdn.net/xuanzhangran/article/details/55051237

将页面上的省市区保存到表中：
前台代码快：

<script src="<%=basePath%>js/business/suRegionAddress.js" type="text/javascript">script>//引入js
<script type="text/javascript">
    window.onload=function(){
        //所在区域联动列表
        setup();//加载的时候就执行里面的代码：如下的js代码有显示
     }  

script>

<div class="row">
<span>收货地址:span> 
<select style="WIDTH: 80px" id="province" name="provinceName" >
    <option>选择省份option>
    <c:forEach items="${provinceList}" var="province">
<c:if test="${province.name == businessFpAddress.provinceName }">
  <option value="${province.id}" selected="selected">${province.name}option>    
c:if>  
<c:if test="${province.name != businessFpAddress.provinceName}">
    <option value="${province.id}">${province.name}option>    
c:if>                    
    c:forEach>
select> 


  <select style="WIDTH: 80px" id="city" name="cityName" >
<c:if test="${not empty businessFpAddress.cityName}">
     <option value="${businessFpAddress.cityName}">${businessFpAddress.cityName}option>
c:if>
<c:if test="${empty businessFpAddress.cityName}">
   <option value="">选择城市option>
c:if>
select> 


  <select style="WIDTH: 90px" id="area" name="districtName" >
<c:if test="${not empty businessFpAddress.districtName}">
   <option value="${businessFpAddress.districtName}">${businessFpAddress.districtName}option>
c:if>
<c:if test="${empty businessFpAddress.districtName}">
    <option value="">选择区域option>
c:if>
select>
div>

is代码块：

/***
 * 省市区三级联动：
 * 三个下拉列表id分别是：province、city、area
 * @returns
 */
function setup() {
    //获取城市
    $("#province").click(function () {//当点击省份的下拉选的时候，选中之后，城市进行联动
        $.ajax({
            　　url: "/BusinessManagament/getCityByProvinceId.html?id="+$("#province").val(),
            　　type: "POST",
            　　dataType:'json',
            　　success:function(data){
                $("#city").empty(); //清空下拉列表
                 $.each(data,function(i,item){
                     $("#city").append(" " + item.name + "");
                 });
            　　}
            });
    });

    //获取区县
    $("#city").click(function () {//当选择城市的下拉选的时候，区域进行联动
        $.ajax({
            　　url: "/BusinessManagament/getAreaByCityId.html?id="+$("#city").val(),
            　　type: "POST",
            　　dataType:'json',
            　　success:function(data){
                $("#area").empty(); //清空下拉列表
                 $.each(data,function(i,item){
                     $("#area").append(" " + item.name + "");
                 });
            　　}
            });
    });         
}

后台代码块：

@Controller
@RequestMapping("/BusinessInfo")
public class BusinessFpAddressAction {
@Resource
SuRegionServer regionServer;//省市区列表的server
@Resource
BusinessFpAddressService businessFpAddressService;//本页面的server
@RequestMapping("/saveBusinessFpAddress.html")
    public String saveBusinessFpAddress(Model model, HttpServletRequest request,
            @RequestParam(value = "pageNo", defaultValue = "1") Integer pageNo,
            @ModelAttribute("businessFpAddress") SuBusinessFpAddress businessFpAddress){
        SuBusiness business = WebUtil.getLoginUser(request);//登录人信息
        Long businessId = business.getId();     

        //省市区一般以数字的形式传入进来的，判断是否为数字
        if(isNumeric(businessFpAddress.getProvinceName())){
        //通过对应的省份的数字代号查出对应点的省份的名称
SuRegion region1 = regionServer.selectByPrimaryKey(Long.parseLong(businessFpAddress.getProvinceName()));
if(region1 != null){
  businessFpAddress.setProvinceName(region1.getName());
  }
}
//通过对应的城市的数字代号查出对应点的城市的名称
if(isNumeric(businessFpAddress.getCityName())){
SuRegion region2 =   regionServer.selectByPrimaryKey(Long.parseLong(businessFpAddress.getCityName()));
if(region2 != null){
   businessFpAddress.setCityName(region2.getName());
 }
}
//通过对应的区的数字代号查出对应点的区的名称
if(isNumeric(businessFpAddress.getDistrictName())){
SuRegion region3 = regionServer.selectByPrimaryKey(Long.parseLong(businessFpAddress.getDistrictName()));
if(region3 != null){
    businessFpAddress.setDistrictName(region3.getName());
    }
}
        //保存省市区地址
            businessFpAddress.setBusinessId(businessId);
            businessFpAddress.setCreateDateTime(new Date());
            businessFpAddress.setStatus(Byte.parseByte("1"));
            Integer count = businessFpAddressService.insertSelective(businessFpAddress);            
            if(count > 0){//如果保存成功，重定向页面
                flag = "1";
                return "redirect:/BusinessManagament/businessFpAddress.html?flag="+flag;
            }
            //此处很重要，就是将省市区的联动列表带到前台区，用到了引入的js里的代码   
          model.addAttribute("provinceList", regionServer.getAllProvices());
        return "redirect:/BusinessManagament/businessFpAddress.html?flag="+flag;

    }
    //判断是否为数字
    public boolean isNumeric(String str){ 
       Pattern pattern = Pattern.compile("[0-9]*"); 
       Matcher isNum = pattern.matcher(str);
       if( !isNum.matches() ){
           return false; 
       } 
       return true; 
    }
}

/**
     * 根据省份id获取城市数据后直接使用@ResponseBody装成json数据
     * 
     * @param id
     *            省份ID
     * @param response
     * @return
     * @return
     */
    @RequestMapping("/getCityByProvinceId.html")
    @ResponseBody
    public String getCityByProvinceId(
            @RequestParam(value = "id", required = false) Long id) {
        List cityList = suRegionServer.getAllCitys(id);//根据省份的id查城市
        return JSON.toJSONString(cityList);
    }

    /**
     * 根据城市id获取区域数据后直接使用@ResponseBody装成json数据
     * 
     * @param id
     * @return
     */
    @RequestMapping("/getAreaByCityId.html")
    @ResponseBody
    public String getAreaByCityId(
            @RequestParam(value = "id", required = false) Long id) {
        List areaList = suRegionServer.getAllAreas(id);//根据城市的id查区域
        return JSON.toJSONString(areaList);

    }

mapping 的sql语句：其中grade=2代表城市，grade=3代表区域。

 <select id="getAllCitys" resultMap="BaseResultMap" parameterType="com.idorabox.entity.SuRegion">
        select
        <include refid="Base_Column_List" />
        from tbl_su_region
        where grade = 2
        <if test="id != null">
            and parent = #{id,jdbcType=BIGINT}
        if>
    select>
    
   <select id="getAllAreas" resultMap="BaseResultMap" parameterType="com.idorabox.entity.SuRegion">
        select
        <include refid="Base_Column_List" />
        from tbl_su_region
        where grade = 3
        <if test="id != null">
            and parent = #{id,jdbcType=BIGINT}
        if>
    select>

注意事项：
（1）：加载的时候执行三级联动的setup（）方法；
（2）：一般省市区都是数字的形式，所以需要将获取传过来的数字 在表中查出名称保存到数据库中；
（3）：点击省份的时候，联动城市，点击城市的时候联动区域。