js怎么获取从springmvc后台传过来的数据
在springmvc中controller的结果集可通过json格式传到js前端接受，也可以通过Map传给前端，具体实现如下
1，通过json格式传递
controller层实现如下
@RequestMapping("queryCityInfo")
@ResponseBody
public String queryCityInfo()throws Exception{
String provinceId = getString("id");
@SuppressWarnings("rawtypes")
List cityList = personalService.queryCity(provinceId);
if(null != cityList && cityList.size() >0 ){
String json = JSONUtils.toJSONString(cityList);
super.outStr(json);
}
return null;
}
protected void outStr(String str)</span>
{
try
{
response.setCharacterEncoding("UTF-8");
response.getWriter().write(str);
}
catch (Exception e)
{
}
}
public static <T> String toJSONString(List<T> list)
{
JSONArray jsonArray = JSONArray.fromObject(list);
return jsonArray.toString();
}
js端接受如下
function selectBankCity(id){
$.ajax({
url:baseAddress+"queryCityInfo.do?provinceId="+id,
type:'get',
dataType:'json',
success:function(data){
$('#custBankArea').empty();
$('#custBankArea').append("<option >--请选择城市信息--</option>");
for(var i=0;i<data.length;i++){
$('#custBankArea').append("<option value='"+scjgcj.comdata[i].id+"'>"+data[i].cityName+"</option>");
}
}
});
}
2，通过Map传递
controller层实现如下
@RequestMapping("queryProvince")
@ResponseBody
public Map<String, Object> queryProvince(HttpServletRequest request,HttpServletResponse response){
Map<String, Object> map = new HashMap<String, Object>();
try {
@SuppressWarnings("rawtypes")
List provinceList = personalService.queryProvince();
if(null != provinceList && provinceList.size() >0 ){
map.put("province", provinceList);
}
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return map;
}
js端接受如下
$.ajax({
url:baseAddress+"queryProvince.do",
type:"get",
success:function(resData){
var data = resData.province;
for(var i=0;i<data.length;i++){
//js实现
//var objs = document.getElementById("cusBankCity")
//objs.options.add(new Option(data[i].provinceName) ,data[i].id);
//jq实现
$("#cusBankCity").append("<option value='"+data[i].id+"'>"+data[i].provinceName+"</option>");
}
}
});
