【发布时间】：2019-02-05 16:31:21
【问题描述】：
您好，我在 Spring Boot 中使用 Java 配置进行 JPA 和 Hibernate 配置，我在这个错误中停留了几个小时。 即使我已将 UserRepository 声明为 bean，它仍然无法获取存储库。
package com.repository;
@Repository
public interface UserRepository extends JpaRepository<User, Long> {}
我正在使用此存储库的服务类：
package com.service;
@Service
public class AppointmentPaymentServiceImpl implements AppointmentPaymentService {
@Autowired
private UserRepository userRepository;
......
......
}
我的数据库配置：
package com.config;
@Configuration
@PropertySource(value = { "classpath:application.properties" })
@EnableTransactionManagement
@EnableJpaRepositories("com.repository.*")
@EnableAutoConfiguration(exclude = {DataSourceAutoConfiguration.class,HibernateJpaAutoConfiguration.class})
public class DBConfig {
@Value("${spring.datasource.driver-class-name}")
public String driver;
@Value("${spring.datasource.url}")
public String url;
@Value("${spring.datasource.username}")
public String username;
@Value("${spring.datasource.password}")
public String password;
@Value("${spring.jpa.properties.hibernate.dialect}")
public String dialect;
@Value("${spring.jpa.hibernate.ddl-auto}")
public String ddl;
@Bean(name = "dataSource")
public DriverManagerDataSource dataSource() {
DriverManagerDataSource dataSource = new DriverManagerDataSource();
dataSource.setDriverClassName(driver);
dataSource.setUrl(url);
dataSource.setUsername(username);
dataSource.setPassword(password);
return dataSource;
}
@Bean(name = "sessionFactory")
public LocalSessionFactoryBean hibernateSessionFactory(DataSource dataSource) {
LocalSessionFactoryBean sessionFactory = new LocalSessionFactoryBean();
sessionFactory.setDataSource(dataSource());
sessionFactory.setPackagesToScan(new String[] { "com.model.*" });
sessionFactory.setHibernateProperties(hibernateProperties());
return sessionFactory;
}
@Bean
HibernateTransactionManager transactionManagerHib(SessionFactory sessionFactory) {
HibernateTransactionManager transactionManager = new HibernateTransactionManager();
transactionManager.setSessionFactory(sessionFactory);
return transactionManager;
}
/*@Bean
@Qualifier(value = "entityManager")
public EntityManager entityManager(EntityManagerFactory entityManagerFactory) {
return entityManagerFactory.createEntityManager();
}*/
@Bean
public PersistenceExceptionTranslationPostProcessor exceptionTranslation() {
return new PersistenceExceptionTranslationPostProcessor();
}
@Bean
public LocalContainerEntityManagerFactoryBean entityManagerFactory() {
HibernateJpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
vendorAdapter.setDatabase(Database.MYSQL);
vendorAdapter.setGenerateDdl(true);
LocalContainerEntityManagerFactoryBean em = new LocalContainerEntityManagerFactoryBean();
em.setDataSource(dataSource());
em.setPackagesToScan("com.model.*");
em.setJpaVendorAdapter(vendorAdapter);
em.setJpaProperties(hibernateProperties());
return em;
}
@Bean
public PlatformTransactionManager transactionManager(EntityManagerFactory emf){
JpaTransactionManager transactionManager = new JpaTransactionManager();
transactionManager.setEntityManagerFactory(emf);
return transactionManager;
}
Properties hibernateProperties() {
return new Properties() {
{
setProperty("hibernate.hbm2ddl.auto", ddl);
setProperty("hibernate.connection.useUnicode", "true");
setProperty("spring.jpa.hibernate.ddl-auto", ddl);
setProperty("hibernate.dialect", dialect);
setProperty("spring.jpa.properties.hibernate.dialect", dialect);
setProperty("hibernate.globally_quoted_identifiers", "true");
setProperty("hibernate.connection.CharSet", "utf8mb4");
setProperty("hibernate.connection.characterEncoding", "utf8");
}
};
}
}
这是我的主要课程：
package com;
@SpringBootApplication
@ComponentScan(basePackages = { "com.*"})
@EnableCaching
@Configuration
@PropertySource({"classpath:logging.properties"})
public class MainApplication {
public static void main(String[] args) {
SpringApplication.run(MainApplication.class, args);
}
}
如果我只使用 spring data jpa，那么我的 pom.xml 包含 hibernate 和 jpa 的这些依赖项，那么默认情况下会导入我不想要的 hibernate-core 5.0.12.Final：
<dependencies>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-jpa</artifactId>
</dependency>
.
.
.
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>5.2.10.Final</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>5.2.3.Final</version>
</dependency>
</dependencies>
错误：
***************************
APPLICATION FAILED TO START
***************************
Description:
Field userRepository in com.service.AppointmentPaymentServiceImpl required a bean of type 'com.repository.UserRepository' that could not be found.
Action:
Consider defining a bean of type 'com.repository.UserRepository' in your configuration.
我的用户实体：
package com.model;
@Entity
@Table(name = "USER")
@Data
@NoArgsConstructor
@AllArgsConstructor
public class User implements Serializable {
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue
@Column(name = "id")
private Long id;
@NotNull
@Column(name = "city_id")
private Long cityId;
@Column(name = "name")
private String name;
@Column(name = "age")
private int age;
@Column(name = "locality")
private String locality;
@Column(name = "gender")
private String gender;
}
【问题讨论】：
-
简答：不要在你的包规范中使用
.*。 -
是的，我尝试过这种方式，但随后出现此错误---> 原因：java.lang.IllegalArgumentException：不是托管类型：com..model.User @chrylis 类
-
'@Entity` 注释是来自
javax....的注释，而不是来自 Hibernatate 的注释，对吧？ （不确定它是否仍然存在，但最好检查一下）。 -
Spring Data Repositories 上不需要
@Repository。 -
将@Service注解添加到你的UserRepository接口。
标签： java hibernate spring-boot spring-data-jpa