Question

我正在尝试创建一个简单的Spring启动应用程序，它将连接到HSQLDB并使用User表，但是我在尝试启动它时会得到这个。

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaAutoConfiguration.class]: Invocation of init method failed; nested exception is javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory

这里有整个控制台输出： http://pastebin.com/7HminjFL

我的档案是：

Application.java

@Configuration
@SpringBootApplication
@EnableTransactionManagement
@EnableJpaRepositories(basePackages = "hello")
@ComponentScan(basePackages = "hello")
@PropertySource({"classpath:application.properties"})

public class Application {

    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }
}

Account.java

@Entity
@Table(name = "User", schema = "PUBLIC")
public class Account implements Serializable {

    @Id
    private Long id;

    @Column(name = "Login", nullable = false)
    private String login;

    @Column(name = "Password", nullable = false)
    private String password;


    protected Account() {
        // no-args constructor required by JPA spec
        // this one is protected since it shouldn't be used directly
    }

    public Account(String login, String password) {
        this.login = login;
        this.password = password;
    }

    public String getLogin() {
        return login;
    }

    public String getPassword() {
        return password;
    }

    public void setLogin(String login) {
        this.login = login;
        return;
    }

    public void setPassword(String password) {
        this.password = password;
        return;
    }
}

AccountRepository.java

public interface AccountRepository extends JpaRepository<Account, Long> {

    Long countByLogin(String login);
}

application.properties

spring.datasource.url=jdbc:hsqldb:file:C:\DB\TestDB
spring.datasource.username=SA
spring.datasource.password=
spring.datasource.driver-class-name=org.hsqldb.jdbcDriver

Answer 1

您的堆栈跟踪可以解决问题。

引起：org.hibernate.AnnotationException：没有为实体指定标识符：hello.Account

在@Id课程中切换Account注释导入。

可能您正在使用：import org.springframework.data.annotation.Id。交换import javax.persistence.Id并尝试重新开始申请;

顺便说一下，@SpringBootApplication是启动SpringBoot应用程序的便捷方式。如果您使用它，则无需添加@Configuration，@ EnableAutoConfiguration和@ComponentScan。

@SpringBootApplication

表示声明一个或多个的{@link Configuration configuration}类   {@link Bean @Bean}方法并触发{@link EnableAutoConfiguration    自动配置}和{@link ComponentScan组件扫描}。

这是一种方便    注释相当于声明{@code @Configuration}，    {@code @EnableAutoConfiguration}和{@code @ComponentScan}。

Spring启动无法启动HSQLDB

1 个答案: