public  MsgInfo delete(@ApiParam(name="id",value="id",required = true)@PathParam("id") long id)

找了一圈，都不行呀

搞定了，通过nickname

    @At("/delete/?")
    @GET
    @ApiOperation(nickname ="/delete/{id}", value = "删除学生",httpMethod = "GET")
    @ApiImplicitParams({
            @ApiImplicitParam(name = "id",paramType = "path",dataTypeClass = Long.class,required = true)
    })
    public  MsgInfo delete(long id){
        try {
            dao.delete(Stud.class,id);
            return MsgInfo.success().setData(true);
        }catch (Exception ex){
            MsgInfo msg= MsgInfo.fail().setData(false);
            msg.msg=ex.getMessage();
            return msg;
        }
    }