我使用Spring boot+JPA,在启动服务时遇到了一个问题。

Caused by: java.lang.IllegalArgumentException: Not an managed type: class com.nervytech.dialer.domain.PhoneSettings
    at org.hibernate.jpa.internal.metamodel.MetamodelImpl.managedType(MetamodelImpl.java:219)
    at org.springframework.data.jpa.repository.support.JpaMetamodelEntityInformation.<init>(JpaMetamodelEntityInformation.java:68)
    at org.springframework.data.jpa.repository.support.JpaEntityInformationSupport.getMetadata(JpaEntityInformationSupport.java:65)
    at org.springframework.data.jpa.repository.support.JpaRepositoryFactory.getEntityInformation(JpaRepositoryFactory.java:145)
    at org.springframework.data.jpa.repository.support.JpaRepositoryFactory.getTargetRepository(JpaRepositoryFactory.java:89)
    at org.springframework.data.jpa.repository.support.JpaRepositoryFactory.getTargetRepository(JpaRepositoryFactory.java:69)
    at org.springframework.data.repository.core.support.RepositoryFactorySupport.getRepository(RepositoryFactorySupport.java:177)
    at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.initAndReturn(RepositoryFactoryBeanSupport.java:239)
    at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.afterPropertiesSet(RepositoryFactoryBeanSupport.java:225)
    at org.springframework.data.jpa.repository.support.JpaRepositoryFactoryBean.afterPropertiesSet(JpaRepositoryFactoryBean.java:92)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1625)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1562)

这是Application.java文件,

@Configuration
@ComponentScan
@EnableAutoConfiguration(exclude = { DataSourceAutoConfiguration.class })
@SpringBootApplication
public class DialerApplication {

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

我使用UCp进行连接池,数据源配置如下:

@Configuration
@ComponentScan
@EnableTransactionManagement
@EnableAutoConfiguration
@EnableJpaRepositories(entityManagerFactoryRef = "dialerEntityManagerFactory", transactionManagerRef = "dialerTransactionManager", basePackages = { "com.nervy.dialer.spring.jpa.repository" })
public class ApplicationDataSource {

    /** The Constant LOGGER. */
    private static final Logger LOGGER = LoggerFactory
            .getLogger(ApplicationDataSource.class);

    /** The Constant TEST_SQL. */
    private static final String TEST_SQL = "select 1 from dual";

    /** The pooled data source. */
    private PoolDataSource pooledDataSource;

UserDetailsService实现,

@Service("userDetailsService")
@SessionAttributes("user")
public class UserDetailsServiceImpl implements UserDetailsService {

    @Autowired
    private UserService userService;

服务层实现,

@Service
public class PhoneSettingsServiceImpl implements PhoneSettingsService {

}

存储库类,

@Repository
public interface PhoneSettingsRepository extends JpaRepository<PhoneSettings, Long> {

}

实体类,

@Entity
@Table(name = "phone_settings", catalog = "dialer")
public class PhoneSettings implements java.io.Serializable {

WebSecurityConfig类,

@Configuration
@EnableWebMvcSecurity
@ComponentScan
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {

    @Autowired
    private UserDetailsServiceImpl userDetailsService;

    /**
     * Instantiates a new web security config.
     */
    public WebSecurityConfig() {

        super();
    }

    /**
     * {@inheritDoc}
     * @see org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter#configure(org.springframework.security.config.annotation.web.builders.HttpSecurity)
     */
    @Override
    protected void configure(HttpSecurity http) throws Exception {

        http.authorizeRequests()
            .antMatchers("/login", "/logoffUser", "/sessionExpired", "/error", "/unauth", "/redirect", "*support*").permitAll()
            .anyRequest().authenticated().and().rememberMe().and().httpBasic()
            .and()
            .csrf()
            .disable().logout().deleteCookies("JSESSIONID").logoutSuccessUrl("/logoff").invalidateHttpSession(true);
    }


    @Autowired
    public void configAuthentication(AuthenticationManagerBuilder auth) throws Exception {

      auth.userDetailsService(userDetailsService).passwordEncoder(new BCryptPasswordEncoder());
    }

}

包装如下:

应用程序类在- com. nerve .dialer中 数据源类在- com. nerver .dialer.common中 实体类在- com. nerver .dialer.domain 服务类在- com.nervy.dialer.domain.service.impl 控制器在- com.nervy.dialer.spring.controller 存储库类在- com.nervy.dialer.spring.jpa.repository中 WebSecurityConfig在- com.nervy.dialer.spring.security

谢谢


当前回答

我正在使用spring boot 2.0,我通过用@EntityScan替换@ComponentScan来修复这个问题

其他回答

多模块Maven项目

我知道@ entitscan之前被回答:

invzbl3 Manish Maheshwari

但我觉得有必要强调,在处理多模块Maven项目时,这个问题可能经常发生。

以我为例,我有一个多模块的Maven项目,其中一个模块是模型包,其他模块是微服务。在我的例子中,当我运行一个使用模型包中定义的类(在我的项目中调用的域)的微服务时,我必须将@EntityScan(basePackages = {"com.example.domain"})注释添加到@SpringBootApplication类:

@SpringBootApplication
@EnableEurekaClient
@EntityScan(basePackages = {"com.example.domain"}) // add this so the spring boot context knows where to look for entities
public class DoctorServiceApplication {

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

}

如果您正在使用SessionFactory作为EMF:

在我的例子中,问题是我忘记在Hibernate配置中包含一个带注释的类的新实体类型,为此我得到了错误。

所以,在你的SessionFactory bean中,不要忘记为你的新实体类型添加这一行:

configuration.addAnnotatedClass(MyEntity.class);

在我的例子中,我犯了一个错误,使用存储库类作为JpaRepository参数,而不是实体类。是这样的:

@Repository
public interface BuyerInspectionRepository extends JpaRepository<BuyerInspectionRepository,Long> {

}

所以我用实体类替换了存储库类。即买方检验。

@Repository
public interface BuyerInspectionRepository extends JpaRepository<BuyerInspection,Long> {

}

我在用Kotlin做Spring web应用程序教程时,遇到了这个问题。在与官方GitHub存储库进行了一些比较后,我意识到我的错误:我的实体。Kt文件缺少它的包指令。所以我有以下(注意缺少包指令):

import com.example.blog.toSlug
import java.time.LocalDateTime
import javax.persistence.*

@Entity
class Article(
    var title: String,
    var headline: String,
    var content: String,
    @ManyToOne var author: User,
    var slug: String = title.toSlug(),
    var addedAt: LocalDateTime = LocalDateTime.now(),
    @Id @GeneratedValue var id: Long? = null)

@Entity
class User(
    var login: String,
    var firstname: String,
    var lastname: String,
    var description: String? = null,
    @Id @GeneratedValue var id: Long? = null)

而不是正确的

package com.example.blog

import java.time.LocalDateTime
import javax.persistence.*

@Entity
class Article(
    var title: String,
    var headline: String,
    var content: String,
    @ManyToOne var author: User,
    var slug: String = title.toSlug(),
    var addedAt: LocalDateTime = LocalDateTime.now(),
    @Id @GeneratedValue var id: Long? = null)

@Entity
class User(
    var login: String,
    var firstname: String,
    var lastname: String,
    var description: String? = null,
    @Id @GeneratedValue var id: Long? = null)

奇怪的是,我没有从IntelliJ得到任何警告。

我已经复制了类似的问题w/不是管理类型。

更具体地说:

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'stockPriceRepository' defined in com.example.stockclient.repository.StockPriceRepository defined in @EnableJpaRepositories declared on StockUiApplication: Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: Not a managed type: class com.example.stockclient.StockPrice

由于我有多模块项目,我需要为Spring Data JPA启用自动配置支持,以了解JPA存储库的路径,因为默认情况下,它将只扫描主应用程序包及其子包来检测JPA存储库。

因此,在我的特定用例中,我已经使用@ enablejparepository来启用包含在必要包中的JPA存储库,但没有@EntityScan。

使用@EntityScan与使用@ enablejparepository情况相同,因为由于多模块项目,实体类没有放在主应用程序包中。

要了解更多细节,您可以参考这篇文章。