Spring-boot database Operations (SPRING-DATA-JPA)

1. Introduction of two dependencies

<Dependency>   <groupId>Org.springframework.boot</groupId>   <Artifactid>Spring-boot-starter-data-jpa</Artifactid></Dependency><Dependency>   <groupId>Mysql</groupId>   <Artifactid>Mysql-connector-java</Artifactid></Dependency>

2. Modify the data source configuration

Spring:  Profiles:    active:dev  JPA:    hibernate:      ddl-auto:update    show-sql:true  DataSource:    driver-class-name:com.mysql.jdbc.driver    url:jdbc:mysql://127.0.0.1:3306/dbgirl    Username:root    PASSWORD:AAAAAA

3, the entity class has used three annotations @Entity @Id @GeneratedValue

4, Repository integrated JPA interface Org.springframework.data.jpa.repository. Jparepository

5, according to the other field query outside the primary key, expand the Query method, name the way findBy + field name

6, transaction processing. Use annotations @Transactional the method to implement the transaction.

Spring-boot database Operations (SPRING-DATA-JPA)