spring-data：不是托管类型：类java.lang.Object

时间：2014-05-22 16:29:06

标签： java spring spring-data spring-data-jpa

我昨天开始使用spring-data项目，并试图将测试添加到我创建的存储库中。

项目结构类似于

persistence/pom.xml
           src/main/java/
                        ApplicationConfig
                        BaseRepository
                        Network
           src/main/test/BaseRepositoryTest

ApplicationConfig看起来像

@Configuration
@ComponentScan
@EnableJpaRepositories
public class ApplicationConfig {
    @Bean
    public DataSource dataSource() {
        final EmbeddedDatabaseBuilder embeddedDatabaseBuilder = new EmbeddedDatabaseBuilder();
        embeddedDatabaseBuilder.setType(EmbeddedDatabaseType.H2);
        return embeddedDatabaseBuilder.build();
    }

    @Bean
    public LocalContainerEntityManagerFactoryBean entityManagerFactory() {
        final HibernateJpaVendorAdapter jpaVendorAdapter = new HibernateJpaVendorAdapter();
        jpaVendorAdapter.setDatabase(Database.H2);
        jpaVendorAdapter.setGenerateDdl(true);

        final LocalContainerEntityManagerFactoryBean localContainerEntityManagerFactoryBean = new LocalContainerEntityManagerFactoryBean();
        localContainerEntityManagerFactoryBean.setJpaVendorAdapter(jpaVendorAdapter);
        localContainerEntityManagerFactoryBean.setPackagesToScan(getClass().getPackage().getName());
        localContainerEntityManagerFactoryBean.setDataSource(dataSource());

        return localContainerEntityManagerFactoryBean;
    }
}

BaseRepository看起来像

import org.springframework.data.repository.Repository;

public interface BaseRepository<T, ID extends Serializable> extends Repository<T, ID> {
    List<T> findAll();
}

Network是一个类似于

的实体类 
@Entity
public class Network extends com.org.comma.persistence.Entity {
    private final long networkId;

    private final String name;

    private final boolean active;

    private final DateTime createdAt;

    private String createdBy;

    private DateTime updatedAt;

    private String updatedBy;
...
}

和BaseRepositoryTest看起来像

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(classes = {ApplicationConfig.class, BaseRepository.class})
public class BaseRepositoryTest {

    @Autowired
    BaseRepository<Network, Long> baseRepository;

    @Test
    public void testAllNetworks() {
        final List<Network> networks = baseRepository.findAll();
        assertTrue(networks.isEmpty());
    }
}

我的pom.xml看起来像

<dependencies>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-core</artifactId>
    </dependency>
    <dependency>
        <groupId>org.hibernate.javax.persistence</groupId>
        <artifactId>hibernate-jpa-2.0-api</artifactId>
        <version>1.0.1.Final</version>
    </dependency>
    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-entitymanager</artifactId>
        <version>4.3.5.Final</version>
    </dependency>
    <dependency>
        <groupId>org.springframework.data</groupId>
        <artifactId>spring-data-jpa</artifactId>
        <version>1.6.0.RELEASE</version>
    </dependency>
    <dependency>
        <groupId>joda-time</groupId>
        <artifactId>joda-time</artifactId>
    </dependency>
    <dependency>
        <groupId>com.google.code.findbugs</groupId>
        <artifactId>jsr305</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-test</artifactId>
    </dependency>
    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>com.h2database</groupId>
        <artifactId>h2</artifactId>
    </dependency>
</dependencies>

当我运行mvn clean install时，我将错误视为

java.lang.IllegalStateException: Failed to load ApplicationContext
    at org.springframework.test.context.CacheAwareContextLoaderDelegate.loadContext(CacheAwareContextLoaderDelegate.java:99)
    at org.springframework.test.context.DefaultTestContext.getApplicationContext(DefaultTestContext.java:101)
    at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.injectDependencies(DependencyInjectionTestExecutionListener.java:109)
    at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.prepareTestInstance(DependencyInjectionTestExecutionListener.java:75)
    at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:319)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:212)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner$1.runReflectiveCall(SpringJUnit4ClassRunner.java:289)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock(SpringJUnit4ClassRunner.java:291)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:232)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:89)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
    at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
    at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:71)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:175)
    at org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:252)
    at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:141)
    at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:112)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.apache.maven.surefire.util.ReflectionUtils.invokeMethodWithArray(ReflectionUtils.java:189)
    at org.apache.maven.surefire.booter.ProviderFactory$ProviderProxy.invoke(ProviderFactory.java:165)
    at org.apache.maven.surefire.booter.ProviderFactory.invokeProvider(ProviderFactory.java:85)
    at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:115)
    at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:75)
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'baseRepository': Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: Not an managed type: class java.lang.Object

请帮助我确定我在这里做错了什么，我是这个项目的新手

9 个答案:

答案 0 :(得分：36)

存储库管理的类型必须在引导时知道，这意味着您需要实际创建一个这样的具体存储库：

interface NetworkRepository extends BaseRepository<Network, Long> { … }

您展示的代码中还有一些其他故障：

  • Network类没有使用@Id
    • 注释的任何属性
  • BaseRepository应该带有@NoRepositoryBean注释，表明它根本不应该被实例化。有关详细信息，请参阅reference documentation。

答案 1 :(得分：8)

如果您有一个扩展另一个的存储库接口并且您忘记了超级接口上的@NoRepositoryBean，也会发生这种情况。

答案 2 :(得分：7)

我遇到了同样的问题，并通过添加@NoRepositoryBean

解决了这个问题 
@NoRepositoryBean
public interface BaseRespository<T, ID extends Serializable> extends PagingAndSortingRepository<T, ID> {}

答案 3 :(得分：4)

由于 my.package 名称错误，我收到了同样的错误。一旦我提供了正确的包名，它就可以正常工作。

@EnableJpaRepositories（ '的 my.package '）

答案 4 :(得分：0)

尝试以下更改

@ContextConfiguration(classes = {ApplicationConfig.class, BaseRepository.class}, loader=AnnotationConfigContextLoader.class)

答案 5 :(得分：0)

我在做下面的错误：

在创建工厂时，我已经通过了repo包而不是实体包。

答案 6 :(得分：0)

我认为您想念模型类上的@Entity注释

    @Entity
    class <classname>
    {
       //model variables   & getters Setters   

    }

答案 7 :(得分：0)

另一个问题可能是由于忘记了用@Entity注释类，这就是为什么Spring Boot将其视为Not a managed type

注释完课程后，它应该可以工作了。但是，如果出现以下错误：

Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfiguration.class]

然后确保您的班级具有一个带有以下注释的ID：

 @Id
 @GeneratedValue(strategy = GenerationType.AUTO)

另一种情况可能是Spring Boot没有检测到您的JPA或CrusRepository软件包。确保使用以下注释对主类进行注释：

@EnableJpaRepositories("Your-Package-Name-That-Includes-Your-Repository")

答案 8 :(得分：0)

尝试将ID替换为您要映射的类或模型的数据类型，且该数据类型将为Integer，因此请在
中替换ID     JpaRepository<T,ID>带有整数的ID，即JpaRepository<T,Integer>

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