第一步:在dao层接口定义批量删除方

    1. //批量删除
    2.     public int delMany(List<Integer> list);

    第二步:在mapper映射文件中写sql语句

    1. <delete id="delMany" >
    2.     delete from t_device where d_id in
    3.     <foreach collection="list" item="id" open="(" close=")" separator=",">
    4.         #{id}
    5.     </foreach>
    6. </delete>

    第三步:在service层接口定义批量删除方法

    1. //批量删除
    2.      R delMany(List<Device> list);

    第四步:实现service接口方法

    1.   public R delMany(List<Device> list) {
    2.         ArrayList<Integer> integers = new ArrayList<>();
    3.         for (Device device : list) {
    4.             integers.add(device.getD_id());
    5.         }
    6.         if (dao.delMany(integers)>0){
    7.             return R.ok();
    8.         }
    9.         return R.fail();
    10.     }

    第五步:在controller层定义方法,与前段进行交互

    1.  @RequestMapping("delmany.do")
    2.     @ResponseBody
    3.     public R delMany(@RequestBody List<Device> list)
    4.     {
    6.         return service.delMany(list);
    7.     }

    第五步:前段ajax

    1.  $.ajax({
    2.                     type:'post',
    3.                     url:"/api/device/delmany.do",
    4.                     contentType:"application/json;charset=UTF-8",
    5.                     data:JSON.stringify(data),
    6.                     dataType:"json",
    7.                     success:function (ret) {
    11.                     }
    12.                 })