三、SpringBoot JPA 配置Hibernate

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步骤
- maven添加支持
- 编写applicationproperties
- 写entity
- 写JPARepository

步骤

1.maven添加支持

       <!-- Spring Boot JPA -->        <dependency>            <groupId>org.springframework.boot</groupId>            <artifactId>spring-boot-starter-data-jpa</artifactId>        </dependency>        <dependency>

2.编写application.properties

spring.datasource.url: jdbc:mysql://localhost/beautyspring.datasource.username=rootspring.datasource.password=rootspring.datasource.driverClassName=com.mysql.jdbc.Driverspring.jpa.hibernate.ddl-auto=update

3.写entity

@Entity@Table(name = "user")public class UserEntity {    @Id    @GeneratedValue(strategy = GenerationType.AUTO)    private Long id = 0L;    private String name;    @Id    @GeneratedValue(strategy = GenerationType.AUTO)    public Long getId() {        return id;    }    public void setId(Long id) {        this.id = id;    }    public String getName() {        return name;    }    @Override    public String toString() {        return "UserEntity{" +                "id=" + id +                ", name='" + name + '\'' +                '}';    }    public void setName(String name) {        this.name = name;    }}

4.写JPARepository

public interface UserRepository extends JpaRepository<UserEntity,Integer>{}

注意事项:测试之前一定要先确认配置文件的中数据库文件是存在的.user和password是正确的

github:https://github.com/wuyihua/SpringBoot chapter2

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