gitignore auto generator .gitignore https://gitignore.io/ https://www.toptal.com/developers/gitignore macos, visualstudiocode, node, git https://www.toptal.com/developers/gitignore/api/macos,visualstudiocode,node,git # Created by https://www.toptal.c…
NGINX configure auto generator The easiest way to configure a performant, secure, and stable NGINX server. https://www.digitalocean.com/community/tools/nginx demo https://www.digitalocean.com/community/tools/nginx?domains.0.server.domain=xgqfrms.xyz&…
how to auto open demo and create it in a new codesandbox markdown & iframe https://ant.design/docs/react/getting-started-cn https://github.com/ant-design/ant-design/blob/master/docs/react/getting-started.zh-CN.md iframe markdwon <iframe <iframe…
在JPA中,实体继承关系的映射策略共有三种:单表继承策略(table per class).Joined策略(table per subclass)和Table_PER_Class策略. 1.单表继承策略 单表继承策略,父类实体和子类实体共用一张数据库表,在表中通过一列辨别字段来区别不同类别的实体.具体做法如下: a.在父类实体的@Entity注解下添加如下的注解: @Inheritance(Strategy=InheritanceType.SINGLE_TABLE)@Discriminator…