js前端和后台数据交互-----前端传字符串，后台控制器将其转化为集合

 

   jquery代码：

                  function test(){

                        var selectOption=$('#下拉框的id').val(); 

                         if(selectOption){

                                 selectOption=selectOption.substring(0,selectOption.length-1)
                   }                   

         }   

 

   

    控制器方法代码：

       

@ResponseBody
@RequestMapping(value = "/getBacktrackUU", method = {RequestMethod.POST, RequestMethod.GET})
public Object getBacktrackUU(HttpServletRequest request) {
     //从request中获取含属性前缀名的参数,构造去除前缀名后的参数Map.
Map<String, Object> query = WebUtils.getParametersStartingWith(request, "");
QueryCriteria param = new QueryCriteria();
initParameters(param, query);
String[] a=query.get('前端页面定义的字段').toString().split(",");
param.put('字段名称',Arrays.aList(a));
param.put("intmmeueid",query.get("intmmeueid"));
List<Map> result = lteGtManager.getBacktrackUU(param);
return result;
}

 

mybatis中xml文件的用法：
             select * from 表名 where 字段名称 in
             <foreach collection="condition.控制器字段名称" index="index" item="item" open="(" 
             separator="," close=")">
                    '${item}'
        </foreach>