JAVA代码

  1. package com.tj.qywx.service.impl;
  3. import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
  4. import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
  5. import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
  6. import com.tj.qywx.domain.WxBillList;
  7. import com.tj.qywx.service.WxBillListService;
  8. import com.tj.qywx.mapper.WxBillListMapper;
  9. import com.tj.utils.R;
  10. import lombok.extern.slf4j.Slf4j;
  11. import org.apache.commons.lang3.StringUtils;
  12. import org.springframework.stereotype.Service;
  14. import java.util.List;
  16. /**
  17.  *
  18.  */
  19. @Slf4j
  20. @Service
  21. public class WxBillListServiceImpl extends ServiceImpl<WxBillListMapper, WxBillList>
  22.     implements WxBillListService{
  24.     @Override
  25.     public R show(Integer pagenum, Integer pagesize, WxBillList wxBillList) {
  26.         //构造条件构造器
  27.         LambdaQueryWrapper<WxBillList> lqw = new LambdaQueryWrapper();
  29.         //添加过滤条件
  30.         lqw.like(StringUtils.isNotEmpty(wxBillList.getPayeeName()), WxBillList::getPayeeName, wxBillList.getPayeeName());
  33.         //判断是否有分页
  34.         if (pagenum != null || pagesize != null) {
  35.             //构造分页构造器,
  36.             Page page = new Page(pagenum, pagesize);
  38.             //执行查询
  39.             page(page, lqw);
  40.             //如果查询后的pagenum（当前页码）>(实际的总页码)，
  41.             if (pagenum > page.getPages()) {
  42.                 log.info("当前页码>总的页码");
  43.                 //那么当前页码就等于总页码，然后重新查询
  44.                 page = new Page(page.getPages(), pagesize);
  45.                 //执行查询
  46.                 page(page, lqw);
  47.             }
  48.             log.info("查询到的page数据：{}", page.toString());
  49.             if (page.getTotal() > 0) {
  51.                 return R.success(page);
  52.             } else {
  53.                 return R.error("未查询到数据");
  54.             }
  55.         }
  56.         //2,不分页的查询，返回list
  57.         List<WxBillList> list = list(lqw);
  58.         log.info("查询到的list数据：{}", list.toString());
  59.         if (list != null) {
  60.             return R.success(list);
  61.         }
  62.         return R.error("未查询到数据");
  63.     }
  64. }