SpringBoot 整合JPA

1.导入依赖

       <!--JPA-->
       <dependency>
           <groupId>org.springframework.boot</groupId>
           <artifactId>spring-boot-starter-data-jpa</artifactId>
       </dependency>
       <!--Mysql数据库驱动-->
       <dependency>
           <groupId>mysql</groupId>
           <artifactId>mysql-connector-java</artifactId>
       </dependency>

2.Application.properties 配置

  #JPA
spring.datasource.url=jdbc:mysql://localhost:3306/dbname?useSSL=false
spring.datasource.username=root
spring.datasource.password=root
spring.datasource.tomcat.max-active=100
spring.datasource.tomcat.max-idle=200
spring.datasource.tomcat.initialSize=20
spring.jpa.database-platform=org.hibernate.dialect.MySQL5Dialect

3.创建实体类

        方式一：手动创建  `繁琐`
        给项目添加JPA  使用IDEA的Database+persistence来创建实体类

4创建映射器接口，继承JPARepository 接口

JpaRepository.png