SSH结合jquery实现三级联动效果

 <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>

  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);        }      })    }  }

<package name="user" namespace="/" extends="json-default">    <action name="floor" class="addressInfoAction" 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>

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;  }