SpringBoot2 - jpa实体不是托管类型。

Question

我有一个用javax.persistence.Entity标记的类，SpringBoot说它不是托管类型。

这门课如下

@Entity
@Table(name="users")
public class User {

@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private long id;

private String name;

@Column(unique = true)
private String username;

...

UserRepository.java

public interface UserRepository extends CrudRepository<User, Long> {

    User findByUsername(String username);

    List<User> findByName(String name);

    @Query("UPDATE AppUser u SET u.lastLogin=:lastLogin WHERE u.username = ?#{ principal?.username }")
    @Modifying
    @Transactional
    public void updateLastLogin(@Param("lastLogin") Date lastLogin);

}

AuthenticationSuccessHandler.java

@Component
public class AuthenticationSuccessHandlerImpl implements AuthenticationSuccessHandler {

    @Autowired
    private UserRepository userRepository;

    @Override
    public void onAuthenticationSuccess(HttpServletRequest request, HttpServletResponse response,
        Authentication authentication) throws IOException, ServletException {
        userRepository.updateLastLogin(new Date());
    }

}

和SpringSecurityConfig.java

@Configuration
@EnableWebSecurity
@ComponentScan("com.bae.dbauth.security")
public class SpringSecurityConfig extends WebSecurityConfigurerAdapter {

    @Autowired
    private WebApplicationContext applicationContext;
    private CustomUserDetailsService userDetailsService;
    @Autowired
    private AuthenticationSuccessHandlerImpl successHandler;
    @Autowired
    private DataSource dataSource;

    @PostConstruct
    public void completeSetup() {
        userDetailsService = applicationContext.getBean(CustomUserDetailsService.class);
    }

    @Override
    protected void configure(final AuthenticationManagerBuilder auth) throws Exception {
        auth.userDetailsService(userDetailsService)
            .passwordEncoder(encoder())
            .and()
            .authenticationProvider(authenticationProvider())
            .jdbcAuthentication()
            .dataSource(dataSource);
    }

    @Override
    public void configure(WebSecurity web) throws Exception {
        web.ignoring()
        .antMatchers("/resources/**");
    }

    @Override
    protected void configure(final HttpSecurity http) throws Exception {
        http.authorizeRequests()
            .antMatchers("/login")
            .permitAll()
            .and()
            .formLogin()
            .permitAll()
            .successHandler(successHandler)
            .and()
            .csrf()
            .disable();
    }

    ....

}

申请课..。

@SpringBootApplication
@PropertySource("classpath:persistence-h2.properties")
@EnableJpaRepositories(basePackages = { "com.bae.dbauth.repositories" })
@EnableWebMvc
@Import(SpringSecurityConfig.class)
public class BaeDbauthApplication implements WebMvcConfigurer {

    @Autowired
    private Environment env;

    @Bean
    public DataSource dataSource() {
        final DriverManagerDataSource dataSource = new DriverManagerDataSource();
        dataSource.setDriverClassName(env.getProperty("driverClassName"));
        dataSource.setUrl(env.getProperty("url"));
        dataSource.setUsername(env.getProperty("user"));
        dataSource.setPassword(env.getProperty("password"));
        return dataSource;
    }

    @Bean
    public LocalContainerEntityManagerFactoryBean entityManagerFactory() {
        final LocalContainerEntityManagerFactoryBean em = new LocalContainerEntityManagerFactoryBean();
        em.setDataSource(dataSource());
        em.setPackagesToScan(new String[] { "com.bae.dbauth.models" });
        em.setJpaVendorAdapter(new HibernateJpaVendorAdapter());
        em.setJpaProperties(additionalProperties());
        return em;
    }

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

}

当我运行应用程序时，我得到了一个很长的错误消息，其中包括Caused by: java.lang.IllegalArgumentException: Not a managed type: class com.bae.dbauth.model.User

整个堆栈跟踪非常广泛，它的开头是：

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'springSecurityConfig': Unsatisfied dependency expressed through field 'successHandler'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'authenticationSuccessHandlerImpl': Unsatisfied dependency expressed through field 'userRepository'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userRepository': Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: Not a managed type: class com.bae.dbauth.model.User

我不明白用户类的问题是什么。

更新：--我在SpringSecurityCongig.java中添加/修改了注释，并尝试了

@Configuration
@EnableWebSecurity
@ComponentScan({"com.bae.dbauth.security", "com.bae.dbauth.model"})

和

@Configuration
@EnableWebSecurity
@ComponentScan("com.bae.dbauth.security")
@EntityScan(basePackages = {"com.bae.dbauth.model"})

其中，com.bae.dbauth.model是User实体所在的包，而com.bae.dbauth是SpringSecurityConfig.java和主application类所在的包。

结果在每种情况下都是相同的--相同的错误消息。

Answer 1

该实体未被发现。如果您的实体管理器工厂自动配置，您有两个选项：

• 添加@EntityScan
• 将实体放置在应用程序下的包中(这些包由约定扫描)

我可以看到，您自己配置了实体经理工厂。

em.setPackagesToScan(new String[] { "com.bae.dbauth.models" });

当用户实体在：com.bae.dbauth.model中时

这让我觉得这只是一个错误。

Answer 2

除了应用程序类上的注释之外，如果您已经配置了多个DB (或单独定义的DB配置；@LocalContainerEntityManagerFactoryBean的Bean)，那么请确保您已经用构建器(EntityManagerFactoryBuilder)定义了正确的包。

e.g

           builder
                .dataSource(dataSource)
                .packages("com.xyz.abc.entity")
                .persistenceUnit("application-db")
                .build();

Answer 3

首先尝试将User中的id类型更改为Long，而不是long。

然后确保@ComponentScan还包括包含实体的java包。可以指定多个要扫描的包，请参阅春季医生。E充分：

@ComponentScan({"pkg1","pkg2"})