05 2022 档案

摘要:https://blog.csdn.net/johnny0316/article/details/124819932 阅读全文
posted @ 2022-05-30 14:14 wyuioahxvm 阅读(201) 评论(0) 推荐(0) 编辑
摘要:点击idea左上角File -> Settings -> Editor -> Inspections -> 搜索 Serialization issues ,找到 Serializable class without ‘serialVersionUID’ ->打上勾,再点击Apply->OK 阅读全文
posted @ 2022-05-29 21:21 wyuioahxvm 阅读(27) 评论(0) 推荐(0) 编辑
摘要:select c.*,(select count(hcus.id) from hcus where c.id=hcus.id and study_status='finished') as learnStuNum,(select count(hcus.id) from hcus where c.id 阅读全文
posted @ 2022-05-29 21:17 wyuioahxvm 阅读(766) 评论(0) 推荐(0) 编辑
摘要:BigDecimal percent =BigDecimal.valueOf(wosCourseVo.getLearnStuNum()*100).divide(BigDecimal.valueOf(wosCourseVo.getStudentsNum()), 0, BigDecimal.ROUND_ 阅读全文
posted @ 2022-05-29 21:12 wyuioahxvm 阅读(787) 评论(0) 推荐(0) 编辑

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