SpringBoot2 - jpa 實體不是托管類型

Question

我有一個標有javax.persistence.Entity的類， SpringBoot說它不是托管類型。

類如下

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

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

private String name;

@Column(unique = true)
private String username;

...

用戶存儲庫.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();
    }

    ....

}

和應用程序類...

@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);
    }

}

當我運行應用程序時，我收到一條很長的錯誤消息，其中包括Caused by: java.lang.IllegalArgumentException: Not a managed type: class com.bae.dbauth.model.User

整個堆棧跟蹤非常廣泛，從以下開始：

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

而且我不明白 User 類有什么問題。

更新：我在SpringSecurityCongig.java添加/修改了注釋並嘗試

@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實體所在的包，而com.bae.dbauth是SpringSecurityConfig.java和主application類所在的包。

每種情況下的結果都是相同的 - 相同的錯誤消息。

Answer 1

首先嘗試在User中將id的類型更改為Long而不是long 。

然后確保@ComponentScan還包括包含實體的java包。 您可以指定多個軟件包進行掃描，請參見Spring docs 。 足夠：

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

Answer 2

添加注釋@Repository在UserRepository：

@Repository
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);
}

Answer 3

找不到實體。 如果您的實體管理員在出廠時已自動配置，則有兩個選項：

• 添加@EntityScan
• 將實體放置在應用程序下的程序包中（這些程序包按約定掃描）

我可以看到您自己配置了實體管理器工廠。

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

當您的用戶實體位於： com.bae.dbauth.model

這使我認為這只是一個錯字。

Answer 4

除了應用程序類上的注釋，如果您配置了多個 DB（或單獨定義的 DB 配置；LocalContainerEntityManagerFactoryBean 的 @Bean），請確保您已經使用構建器（EntityManagerFactoryBuilder）定義了正確的包。

例如

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