1、JSP
<input id="sj" class="easyui-combobox" id="nextAgency" data-options="width:103,prompt:'請選擇省份',editable:false,url:'${ctx}/xxx/xxxAction/listDistrict',
valueField:'aaa020',idField:'aaa020',parentField:'parent',textField:'aaa021',toggleOnClick:'true', onSelect:function(district){
$('#cs').combobox('clear');$('#cs').combobox('reload','${ctx}/xxx/xxxAction/listDistrict?parent='+district.aaa020)},onLoadSuccess:function()
{ $('#sj').combobox('setValue',${sjCode!=null? sjCode : "''"}); $('#cs').combobox('setValue',${csCode!=null? csCode : "''"}); }"/>
<input id="cs" class="easyui-combobox" data-options="width:100,prompt:'請選擇城市' ,
valueField:'aaa020',editable:false,idField:'aaa020',parentField:'parent',
textField:'aaa021',onSelect:function(district){$('#qx').combobox('clear');
$('#qx').combobox('reload','${ctx}/xxx/xxxAction/listDistrict?parent='+district.aaa020)},
onLoadSuccess:function(){ $('#qx').combobox('setValue',${qxCode!=null? qxCode : "''"});}"/>
<input id="qx" class="easyui-combobox" data-options="width:100,prompt:'請選擇區縣' ,
valueField:'aaa020',editable:false,idField:'aaa020',parentField:'parent',textField:'aaa021',
onSelect:function(district){$('#jd').combobox('clear');
$('#jd').combobox('reload','${ctx}/xxx/xxxAction/listDistrict?parent='+district.aaa020)},
onLoadSuccess:function(){ $('#jd').combobox('setValue',${jdCode!=null? jdCode : "''"});}"/>
<input id="jd" class="easyui-combobox" data-options="width:121,prompt:'請選擇鄉鎮(街道)' ,
valueField:'aaa020',editable:false,idField:'aaa020',parentField:'parent',textField:'aaa021',
onSelect:function(district){$('#sq').combobox('clear');
$('#sq').combobox('reload','${ctx}/xxx/xxxAction/listDistrict?parent='+district.aaa020)},
onLoadSuccess:function(){ $('#sq').combobox('setValue',${sqCode!=null?sqCode : "''"});}"/>
<input id="sq" class="easyui-combobox" data-options="width:100,prompt:'請選擇社區' ,
valueField:'aaa020',editable:false,idField:'aaa020',parentField:'parent',textField:'aaa021'"/>
2、Action
/**
* 獲得行政區劃
* @param parent 父節點編碼
* @return
*/
@RequestMapping(value = "/listDistrict")
@ResponseBody
public void listDistrict(String parent,HttpServletRequest request,HttpServletResponse response){
try {
request.setCharacterEncoding("UTF-8");
response.setCharacterEncoding("UTF-8");
response.setContentType("text/html");
List<District> list = districtService.listDistrict(parent);
String json = JSONArray.toJSONString(list);
response.getWriter().write(json);
} catch (Exception e) {
e.printStackTrace();
//TODO 作異常處理
}
}
爲了便於理解,關鍵的點解釋一下吧:
1、表結構,需要有存放父級節點ID的字段,如上面的parent
2、第一次加載省級的地區列表,如第一個Input中的:url:'${ctx}/xxx/xxxAction/listDistrict';
3、當選擇了省份,就觸發onSelect中的函數,先清空市級中的數據,再重新加載當前選擇的省份下的市級地區列表;
4、onLoadSuccess中的函數是爲了對錶單修改時地區的回顯。
其實會了2級級聯,不管多少級都很簡單了,依葫蘆畫瓢,去試試吧。