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spring-data：不是托管类型：类 java.lang.Object

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时间：2020-08-14 01:20:05 　来源:igfitidea点击:

spring-data: Not an managed type: class java.lang.Object

javaspringspring-dataspring-data-jpa

提问by daydreamer

I started using spring-dataproject yesterday and was trying to add a test to repository I have created.

我spring-data昨天开始使用项目，并试图向我创建的存储库添加测试。

The project structure looks like

项目结构看起来像

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

The ApplicationConfiglooks like

的ApplicationConfig模样

@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;
    }
}

The BaseRepositorylooks like

的BaseRepository模样

import org.springframework.data.repository.Repository;

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

The Networkis an Entity class looks like

这Network是一个实体类看起来像

@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;
...
}

and BaseRepositoryTestlooks like

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());
    }
}

My pom.xmllooks like

我的pom.xml样子 

<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>

When I run mvn clean install, I see error as

当我运行时mvn clean install，我看到错误为 

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.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.run(ParentRunner.java:193)
    at org.junit.runners.ParentRunner.schedule(ParentRunner.java:52)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
    at org.junit.runners.ParentRunner.access
@ContextConfiguration(classes = {ApplicationConfig.class, BaseRepository.class}, loader=AnnotationConfigContextLoader.class)

0(ParentRunner.java:42)
    at org.junit.runners.ParentRunner.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

Please help me identify what am I doing wrong here, I am new to this project

请帮我确定我在这里做错了什么，我是这个项目的新手

回答by caburse

Try the following change

尝试以下更改

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

回答by Oliver Drotbohm

The type the repository manages has to be known at bootstrap time, which means that you need to actually create a concrete repository like this:

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具体的存储库，如下所示：

@NoRepositoryBean
public interface BaseRespository<T, ID extends Serializable> extends PagingAndSortingRepository<T, ID> {}

There are a few other glitches in the code you showed:

您展示的代码中还有其他一些小故障：

  • The Networkclass doesn't have any property annotated with @Id
  • BaseRepositoryshould carry an @NoRepositoryBeanannotation to indicate it's not supposed to be instantiated at all. See the reference documentationfor details.
  • 本Network类没有带注释的任何财产@Id
  • BaseRepository应该带有@NoRepositoryBean注释以表明它根本不应该被实例化。有关详细信息，请参阅参考文档。

回答by Frank Fu

I got the same error due to my.packagename is wrong. once I provide the correct package name, it works fine.

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

@EnableJpaRepositories('my.package')

@EnableJpaRepositories(' my.package')

回答by AixNPanes

This also happens if you have one repository interface that extends another and you forgot the @NoRepositoryBean on the super-interface.

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

回答by buddha

I have faced the same issue, and resolved by adding @NoRepositoryBean

我遇到了同样的问题，并通过添加 @NoRepositoryBean 解决了

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

    }

回答by NameNotFoundException

I was doing below mistake:

我在做以下错误：

At the time of creating a factory, I have passed repo package instead of entity package.

在创建工厂时，我通过了 repo 包而不是实体包。

回答by Bharat Bhamare

I think u miss @Entity Annotation on Model Class

我想你想念模型类上的@Entity Annotation 

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

回答by Zeusox

Another issue might be due to forgetting to annotate your class with @Entityas that is why Spring Boot sees it as Not a managed type

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

After you annotate your class it should work. However, if you get the error below:

在您注释您的课程后，它应该可以工作。但是，如果您收到以下错误：

 @Id
 @GeneratedValue(strategy = GenerationType.AUTO)

Then make sure your class has an id with the following annotations:

然后确保您的类具有带有以下注释的 id：

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

Another scenario could be that Spring Boot is not detecting your JPA or CrusRepository Package. Make sure you annotate your main class with the following annotation:

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

##代码##

回答by Prasad Giri

try replacing the ID with the datatype of class or model that you are mapping with and that would be Integer ,so replace ID in
JpaRepository<T,ID>the ID with Integer and i.e will be JpaRepository<T,Integer>

尝试用您要映射的类或模型的数据类型替换 ID，这将是 Integer ，因此将 ID 中
JpaRepository<T,ID>的 ID替换为 Integer ，即JpaRepository<T,Integer>

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