学习:
关于 mybatis-plus LambdaQueryWrapper 查询list
public List<PtBanner> findList(PtBannerParam param){
LambdaQueryWrapper<PtBanner> ptBannerLambdaQueryWrapper = Wrappers.lambdaQuery();
ptBannerLambdaQueryWrapper.likeRight(PtBanner::getOrderNo, param.getOrderNo());
.and(pb->pb.lt(PtBanner::getGoodsId,1).or().isNotNull(PtBanner::getCreateTime));
List<PtBanner> ptBanners = this.baseMapper.selectList(ptBannerLambdaQueryWrapper);
return ptBanners;
}
关于 mybatis-plus LambdaQueryWrapper 获取一个值,false 如果同时获取两个值的情况下也就得到一个值(默认是第一个),true 就会抛出异常
PtBanner one = ptBannerService.getOne(Wrappers.<PtBanner>lambdaQuery().lt(PtBanner::getOrderNo, 1), false);
wrapper基本常用函数
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