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一、JdbcTemplate 二、Spring data jpa 1. 实体类 2. 继承JpaRepository 的接口,来访问数据库 3. [30.3 JPA and Spring Data JPA ](https://docs.spring.io/spring boot/docs/curre 阅读全文
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一般会答: s.length() 看源码是如何实现的: /** * Returns the length of this string. * The length is equal to the number of <a href="Character.html#unicode">Unicode * 阅读全文
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问题 for (var iii = 0; iii < 3; iii++) { setTimeout(function(){ console.debug(iii) }, 1000) let leta = "leta"; var vara = "vara"; } try { console.log( l 阅读全文
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使用set password命令 修改本地密码: SET PASSWORD FOR 'root'@'localhost'=PASSWORD('newpasswd'); 远程密码修改: SET PASSWORD FOR 'root'@'%'=PASSWORD('newpasswd'); 注意: 两个密 阅读全文