spring/struts/hibernate+jquery实现三级联动

jsp页面部分：

<li id="floors">
<span class="title" id="floorShow">选择楼栋：</span>
<select name="build" id="build" style="width: 282px;height: 40px;" onchange="floor2()">
</select>
</li>
<li id="builds">
<span class="title" id="floorShow">选择住房：</span>
<select name="builds" id="floot2" style="width: 282px;height: 40px;">
</select>
</li>

js部分：

function floor(){

document.getElementById("build").options.length =0;
document.getElementById("floot2").options.length =0;
var parentId = document.getElementById("village").value;

if(parentId == 0){

}else{
$.ajax({
type : "post",
url : "floor.action",
data : {"parentId":parentId},
dataType : "json",
success :function(data){

console.log(data);
var len = data.length;

var htm = "<option value='0'>请选择</option>";
for(var i=0;i<len;i++){
htm += "<option value='"+data[i].id+"'>"+data[i].info+"</option>";
}

$("#build").append(htm);
}
})
}
}

function floor2(){
document.getElementById("floot2").options.length =0;
var build = document.getElementById("build").value;

if(build == 0){

}else{
$.ajax({
type : "post",
url : "floor2.action",
data : {"parentId":build},
dataType : "json",
success : function(data){
var len = data.length;
var htm = "<option value='0'>请选择</option>";
for(var i=0;i<len;i++){
htm += "<option value='"+data[i].id+"'>"+data[i].info+"</option>";
}
$("#floot2").append(htm);
}
})
}
}

struts2配置部分：

<package name="user" namespace="/" extends="json-default">
<action name="floor" class="address
9e54
InfoAction" method="floor">
<result type="json">
<param name="root">floor</param>
</result>
</action>

<action name="floor2" class="addressInfoAction" method="floor2">
<result type="json">
<param name="root">floor2</param>
</result>
</action>
</package>

action部分：

public String floor(){
System.out.println("这里是ajax调用");
//floor = addressInfoService.getFloor(addressInfo.getParentId());
System.out.println(addressInfo.getParentId());
floor = addressInfoService.getFloor(addressInfo.getParentId());
return SUCCESS;
}

public String floor2(){
System.out.println("这里是ajax的第二次调用");
System.out.println(addressInfo.getParentId());
floor2 = addressInfoService.getBuild(addressInfo.getParentId());
return SUCCESS;
}

最后，一定不要忘记导入struts2-json-plugin-2.3.15.1.jar 这个夹包的版本也要和struts2的其他的夹包的版本一致~~！