function delAll(){

         var sid="";

         $("[name='ids']:checked").each(function(){

             sid+=$(this).val()+",";

         })

         sid = sid.substring(0, sid.length - 1);

         window.location.href="${path}/delAll.action?sid="+sid;

         alert(sid)

     } 

//delAll.action

    @RequestMapping("delAll.action")

    public String delAll(String sid) {

        String[] split = sid.split(",");

        boolean flag=studentService.delAll(split);

        System.out.println(flag);

        return "redirect:get.action";

    }

<delete id="delAll">

        delete from student where sid in

            <foreach collection="array" item="sids" close=")" open="(" separator=",">

                #{sids}

            </foreach>

    </delete>