ajax带checkbox选择值到后台

function togglefun(checkbox){//全选
        $('input[name=cids]').prop('checked', $(checkbox).prop('checked'));
    }

//执行操作将值传到后台
    function sysnycdata(){
        if($("input[name=cids]:checked").length<1){
            alert("请至少选择一条数据");
            return false
        }
            $.ajax({
                    cache: true,
                    type: "POST",
                    url:"后台地址",
                    data:$("#cidssformsubmit").serialize(),
                    async: false,
                    error: function(request) {
                        alert("Connection error");
                    },
                    success: function(data) {
                        data=eval("("+data+")");

                    }
             });

    }

   <form action="?" method="post" id="cidssformsubmit" >
              <table class="adv_query_list">
                  <tbody>
                      <tr class="search_title_show">
                          <td align="center"><input type="checkbox" name="idschk"  onclick="togglefun(this)"   /></td>
                      </tr>
                       <tr align="center" class="tdbg">
                          <td><input type="checkbox" name="cids"  value="${it[0]}" /></td>
                    </tr>
                  </tbody>
              </table>
          </form>

　　

    @RequestMapping(value = "execute")
    @ResponseBody
    public String execute(Long[] cids,HttpServletRequest request, Model model) throws Exception {
        int errorCount=0;
        try {
            if(null!=cids&&cids.length>0){
                for (int  i = 0; i < cids.length; i++) {
                    System.out.println(cids[i]);
                }
            }
        } catch (Exception e) {
        }
        return "{'errorCount':'"+errorCount+"'}";
    }