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1 一开始我的db.properties时如下： username=root password=root url=jdbc:mysql://127.0.0.1:3306/mybatis?useSSL=true&useUnicode=true&characterEncoding=UTF-8&useUnicode=true&characterEncoding=UTF-8&serverTimezone=UTC driverClassName=com.mysql.jdbc.D

1、首先新建springboot web项目 导入依赖 <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-jdbc</artifactId> </dependency> <dependency>