LambdaQueryWrapper<TeacherModel> wrapper = Wrappers.lambdaQuery(); wrapper.eq(collUtil.isNotEmpty(param.getList()), Entity::condition, param.getList().get(param.getList().size() -1);// 編譯通過(guò),執(zhí)行時(shí),如果param中的list為null,則報(bào)null pointer異常,這是因?yàn)閙p在拼接條件時(shí),會(huì)將三個(gè)參數(shù)帶入到eq...
www.dbjr.com.cn/article/2417...htm 2025-6-5