mybatisPlus 条件构造器

 @PostMapping("plusDemo")
    @ApiOperation(value = "plusDemo")
    @ApiOperationSupport(order = 29)
    public Object plusDemo(){

        //User  表对应的实体
        QueryWrapper<User> queryWrapper=new QueryWrapper<>();

        queryWrapper.eq("表字段","参数值");
        queryWrapper.like ("表字段","参数值");
        queryWrapper.in ("表字段","参数值集合");
        //等....

        return  null;
    }

用了之后，和jpa对比一下，谁是最可爱的dao层小可爱呢......