12 2021 档案
Java递归树形结构
摘要：private List<ZcprojectFieldDto> buildGeneralTree(List<ZcprojectFieldDto> list) { List<ZcprojectFieldDto> result = new ArrayList<>(); //1. 构建一级节点 for (
mybatis返回唯一主键
摘要：<selectKey keyProperty="id" order="AFTER" resultType="java.lang.Integer"> SELECT LAST_INSERT_ID() </selectKey>
mysql字符串拆分
摘要：SELECT SUBSTRING_INDEX(SUBSTRING_INDEX(a.path,',',b.help_topic_id + 1),',',-1) as path FROM (SELECT industrys as path FROM zc_project) a JOIN mysql.he
