springmvc和js前端的数据传递和接收方式(两种)-创新互联

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) 
  { 
    try 
    { 
      response.setCharacterEncoding("UTF-8"); 
      response.getWriter().write(str); 
    } 
    catch (Exception e) 
    { 
    } 
  } 
public static  String toJSONString(List list) 
  { 
    JSONArray jsonArray = JSONArray.fromObject(list); 
     
    return jsonArray.toString(); 
  }