目录结构: 1.工程启动类(ApplicationServer.java)置于com.springboot.build包下 2.实体类(domain)置于com.springboot.domain 3.数据访问层(Dao)置于com.springboot.repository 4.数据服务层(Service)置于com,springboot.service,数据服务的实现接口(serviceImpl)至于com.springboot.service.impl 5.前端控制器(Controller)置于com.springboot.controller 配置数据库: spring.application.name=springboot-demo server.port=8080 server.tomcat.uri-encoding=utf-8 spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver spring.datasource.url=jdbc:mysql://localhost:3306/test spring.datasource.username=root spring.datasource.password=root spring.datasource.max-idle=10 spring.datasource.max-wait=10000 spring.datasource.min-idle=5 spring.datasource.initial-size=5 server.servlet.session.timeout=30m