MybatisPlus实现分页查询和动态SQL查询的示例代码

   /**
     * @param userId        专员的id
     * @param planState     计划状态
     * @param planStartTime 计划开始时间
     * @param emtCode       公司名称-分身id
     * @return java.util.List<com.hc360.crm.entity.po.PlanCustomer>
     * @Author zhaoxiaodong
     * @Description 高级查询-根据计划状态、计划的时间、公司名称查询
     * @Date 9:04 2021/9/29
     */
    @PostMapping("/selectPlanByStateTimeCompany")
    public Page<CrmCustomerPlan> selectPlanByStateTimeCompany(@RequestParam(required = false,defaultValue = "1")int limit, @RequestParam(required = false,defaultValue = "1")int page, @RequestParam(required = true) Long userId,@RequestParam(required = false,defaultValue = "0") int planState,@RequestParam(required = false) String planStartTime,@RequestParam(required = false) Long emtCode) {
        //获取该专员下所有状态为未开始的计划
        List<CrmCustomerPlan> myPlanList = crmCustomerPlanService.selectNoStartPlan(userId);
        if (StringUtil.isNotEmpty(planStartTime)){
            //判断计划的开始时间和当前时间
            DateTimeFormatter dtf = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
            LocalDateTime planTime = LocalDateTime.parse(planStartTime, dtf);
            //存放已逾期的计划
            List<CrmCustomerPlan> overDuePlan = new ArrayList<>();
            for (CrmCustomerPlan customerPlan : myPlanList) {
                if (LocalDateTime.now().isAfter(planTime)) {
                    //当前时间在计划时间之后，说明过了计划时间，这时候我们要将它的状态改为已逾期
                    customerPlan.setPlanState(PlanStateEnum.OVERDUE.getCode());
                    overDuePlan.add(customerPlan);
                }
            }
            if (overDuePlan.size() > 0) {
                //遍历完之后，我们就可以对数据进行更改了
                crmCustomerPlanService.updateBatchById(overDuePlan);
            }
        }
        //接下来，就是对数据进行查询
        return crmCustomerPlanService.selectPlanByStateTimeCompany(limit,page,userId, planState, planStartTime, emtCode);
    }

    /**
    * @param userId
    * @return java.util.List<com.hc360.crm.entity.po.PlanCustomer>
    * @Author zhaoxiaodong
    * @Description 高级查询-根据计划状态、时间、公司名称查询
    * @Date 9:06 2021/9/29
    */
   @Override
   public Page<CrmCustomerPlan> selectPlanByStateTimeCompany(int limit,int page,Long userId, int planState, String planStartTime, Long emtCode) {
       Page<CrmCustomerPlan> pagelimit= new Page(page,limit);
       QueryWrapper<CrmCustomerPlan> crmCustomerPlanQueryWrapper = new QueryWrapper<>();
       crmCustomerPlanQueryWrapper.eq("create_user_id", userId);
       if (planState!=0){
           crmCustomerPlanQueryWrapper.eq("plan_state", planState);
       }
       if (StringUtil.isNotEmpty(planStartTime)){
           crmCustomerPlanQueryWrapper.eq("plan_start_time", planStartTime);
       }
       if (StringUtil.isNotEmpty(String.valueOf(emtCode))){
           crmCustomerPlanQueryWrapper.eq("emt_code", emtCode);
       }
       return crmCustomerPlanMapper.selectPage(pagelimit,crmCustomerPlanQueryWrapper);
   }

  /**
   * 新的分页插件
   */
  @Bean
  public MybatisPlusInterceptor mybatisPlusInterceptor() {
      MybatisPlusInterceptor mybatisPlusInterceptor = new MybatisPlusInterceptor();
      mybatisPlusInterceptor.addInnerInterceptor(new PaginationInnerInterceptor(DbType.MYSQL));
      return mybatisPlusInterceptor;
  }