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Hibernate 不是托管类型：类实体&；弹簧数据

hibernate jpa

Hibernate 不是托管类型：类实体&；弹簧数据,hibernate,jpa,spring-data,Hibernate,Jpa,Spring Data,我正在使用spring数据，我使用@Bean、@Entity和Main.java创建配置类，但运行项目时，我遇到异常： 线程“main”org.springframework.beans.factory.BeanCreationException中的异常：创建名为“todoRepository”的bean时出错：调用init方法失败；嵌套异常是java.lang.IllegalArgumentException:不是托管类型：类实体。Todo MyMain.java public cla

我正在使用
spring数据
，我使用
@Bean
、
@Entity
和
Main.java
创建配置类，但运行项目时，我遇到异常：

线程“main”org.springframework.beans.factory.BeanCreationException中的异常：创建名为“todoRepository”的bean时出错：调用init方法失败；嵌套异常是java.lang.IllegalArgumentException:不是托管类型：类实体。Todo

MyMain.java

    public class Main {

    @Autowired
    private static TodoRepository todoRepository;

    public static void main(String[] args) {
        Todo todo = new Todo();
        todo.setId(1l);
        todo.setTitle("title");
        System.out.println(todoRepository); //null
        todoRepository.save(todo);          //Exception in thread "main" java.lang.NullPointerException
    }
}

@Configuration
@EnableJpaRepositories(basePackages = {"repository"},
        entityManagerFactoryRef = "entityManagerFactory",
        transactionManagerRef = "transactionManager")
@EnableTransactionManagement
@PropertySource("classpath:app.properties")
public class PersistenceContext {

    public PersistenceContext() {
    }

    /**
     * The method that configures the datasource bean
     * */

    @Resource
    private Environment env;

    @Bean(destroyMethod = "close")
    DataSource dataSource() {
        HikariConfig dataSourceConfig = new HikariConfig();
        dataSourceConfig.setJdbcUrl(env.getRequiredProperty("db.url"));
        dataSourceConfig.setDriverClassName(env.getRequiredProperty("db.driver"));
        dataSourceConfig.setUsername(env.getRequiredProperty("db.username"));
        dataSourceConfig.setPassword(env.getRequiredProperty("db.password"));
        return new HikariDataSource(dataSourceConfig);
    }

    /**
     * The method that configures the entity manager factory
     * */
    @Bean
    LocalContainerEntityManagerFactoryBean entityManagerFactory(DataSource dataSource, Environment env) {
        LocalContainerEntityManagerFactoryBean entityManagerFactoryBean = new LocalContainerEntityManagerFactoryBean();
        entityManagerFactoryBean.setDataSource(dataSource);
        entityManagerFactoryBean.setJpaVendorAdapter(new HibernateJpaVendorAdapter());
        entityManagerFactoryBean.setPackagesToScan("net.petrikainulainen.springdata.jpa.todo");

        Properties jpaProperties = new Properties();

        jpaProperties.put("hibernate.dialect", env.getRequiredProperty("hibernate.dialect"));
        jpaProperties.put("hibernate.hbm2ddl.auto", env.getRequiredProperty("hibernate.hbm2ddl.auto"));
        jpaProperties.put("hibernate.show_sql", env.getRequiredProperty("hibernate.show_sql"));
        jpaProperties.put("hibernate.format_sql", env.getRequiredProperty("hibernate.format_sql"));

        entityManagerFactoryBean.setJpaProperties(jpaProperties);

        return entityManagerFactoryBean;
    }

    /**
     * The method that configures the transaction manager
     * */
    @Bean
    JpaTransactionManager transactionManager(EntityManagerFactory entityManagerFactory) {
        JpaTransactionManager transactionManager = new JpaTransactionManager();
        transactionManager.setEntityManagerFactory(entityManagerFactory);
        return transactionManager;
    }
}

@Entity
@Table(name = "todos")
public class Todo {

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private Long id;

    @Column(name = "title", nullable = false, length = 100)
    private String title;

    public Todo() {
    }
    //getter setter tostring
}
PersistenceContext.java

    public class Main {

    @Autowired
    private static TodoRepository todoRepository;

    public static void main(String[] args) {
        Todo todo = new Todo();
        todo.setId(1l);
        todo.setTitle("title");
        System.out.println(todoRepository); //null
        todoRepository.save(todo);          //Exception in thread "main" java.lang.NullPointerException
    }
}

@Configuration
@EnableJpaRepositories(basePackages = {"repository"},
        entityManagerFactoryRef = "entityManagerFactory",
        transactionManagerRef = "transactionManager")
@EnableTransactionManagement
@PropertySource("classpath:app.properties")
public class PersistenceContext {

    public PersistenceContext() {
    }

    /**
     * The method that configures the datasource bean
     * */

    @Resource
    private Environment env;

    @Bean(destroyMethod = "close")
    DataSource dataSource() {
        HikariConfig dataSourceConfig = new HikariConfig();
        dataSourceConfig.setJdbcUrl(env.getRequiredProperty("db.url"));
        dataSourceConfig.setDriverClassName(env.getRequiredProperty("db.driver"));
        dataSourceConfig.setUsername(env.getRequiredProperty("db.username"));
        dataSourceConfig.setPassword(env.getRequiredProperty("db.password"));
        return new HikariDataSource(dataSourceConfig);
    }

    /**
     * The method that configures the entity manager factory
     * */
    @Bean
    LocalContainerEntityManagerFactoryBean entityManagerFactory(DataSource dataSource, Environment env) {
        LocalContainerEntityManagerFactoryBean entityManagerFactoryBean = new LocalContainerEntityManagerFactoryBean();
        entityManagerFactoryBean.setDataSource(dataSource);
        entityManagerFactoryBean.setJpaVendorAdapter(new HibernateJpaVendorAdapter());
        entityManagerFactoryBean.setPackagesToScan("net.petrikainulainen.springdata.jpa.todo");

        Properties jpaProperties = new Properties();

        jpaProperties.put("hibernate.dialect", env.getRequiredProperty("hibernate.dialect"));
        jpaProperties.put("hibernate.hbm2ddl.auto", env.getRequiredProperty("hibernate.hbm2ddl.auto"));
        jpaProperties.put("hibernate.show_sql", env.getRequiredProperty("hibernate.show_sql"));
        jpaProperties.put("hibernate.format_sql", env.getRequiredProperty("hibernate.format_sql"));

        entityManagerFactoryBean.setJpaProperties(jpaProperties);

        return entityManagerFactoryBean;
    }

    /**
     * The method that configures the transaction manager
     * */
    @Bean
    JpaTransactionManager transactionManager(EntityManagerFactory entityManagerFactory) {
        JpaTransactionManager transactionManager = new JpaTransactionManager();
        transactionManager.setEntityManagerFactory(entityManagerFactory);
        return transactionManager;
    }
}

@Entity
@Table(name = "todos")
public class Todo {

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private Long id;

    @Column(name = "title", nullable = false, length = 100)
    private String title;

    public Todo() {
    }
    //getter setter tostring
}
Todo.java

    public class Main {

    @Autowired
    private static TodoRepository todoRepository;

    public static void main(String[] args) {
        Todo todo = new Todo();
        todo.setId(1l);
        todo.setTitle("title");
        System.out.println(todoRepository); //null
        todoRepository.save(todo);          //Exception in thread "main" java.lang.NullPointerException
    }
}

@Configuration
@EnableJpaRepositories(basePackages = {"repository"},
        entityManagerFactoryRef = "entityManagerFactory",
        transactionManagerRef = "transactionManager")
@EnableTransactionManagement
@PropertySource("classpath:app.properties")
public class PersistenceContext {

    public PersistenceContext() {
    }

    /**
     * The method that configures the datasource bean
     * */

    @Resource
    private Environment env;

    @Bean(destroyMethod = "close")
    DataSource dataSource() {
        HikariConfig dataSourceConfig = new HikariConfig();
        dataSourceConfig.setJdbcUrl(env.getRequiredProperty("db.url"));
        dataSourceConfig.setDriverClassName(env.getRequiredProperty("db.driver"));
        dataSourceConfig.setUsername(env.getRequiredProperty("db.username"));
        dataSourceConfig.setPassword(env.getRequiredProperty("db.password"));
        return new HikariDataSource(dataSourceConfig);
    }

    /**
     * The method that configures the entity manager factory
     * */
    @Bean
    LocalContainerEntityManagerFactoryBean entityManagerFactory(DataSource dataSource, Environment env) {
        LocalContainerEntityManagerFactoryBean entityManagerFactoryBean = new LocalContainerEntityManagerFactoryBean();
        entityManagerFactoryBean.setDataSource(dataSource);
        entityManagerFactoryBean.setJpaVendorAdapter(new HibernateJpaVendorAdapter());
        entityManagerFactoryBean.setPackagesToScan("net.petrikainulainen.springdata.jpa.todo");

        Properties jpaProperties = new Properties();

        jpaProperties.put("hibernate.dialect", env.getRequiredProperty("hibernate.dialect"));
        jpaProperties.put("hibernate.hbm2ddl.auto", env.getRequiredProperty("hibernate.hbm2ddl.auto"));
        jpaProperties.put("hibernate.show_sql", env.getRequiredProperty("hibernate.show_sql"));
        jpaProperties.put("hibernate.format_sql", env.getRequiredProperty("hibernate.format_sql"));

        entityManagerFactoryBean.setJpaProperties(jpaProperties);

        return entityManagerFactoryBean;
    }

    /**
     * The method that configures the transaction manager
     * */
    @Bean
    JpaTransactionManager transactionManager(EntityManagerFactory entityManagerFactory) {
        JpaTransactionManager transactionManager = new JpaTransactionManager();
        transactionManager.setEntityManagerFactory(entityManagerFactory);
        return transactionManager;
    }
}

@Entity
@Table(name = "todos")
public class Todo {

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private Long id;

    @Column(name = "title", nullable = false, length = 100)
    private String title;

    public Todo() {
    }
    //getter setter tostring
}
所有stacktrace：

SLF4J:未能加载类“org.SLF4J.impl.StaticLoggerBinder”。
SLF4J:默认为无操作（NOP）记录器实现
SLF4J：参见http://www.slf4j.org/codes.html#StaticLoggerBinder 详情请参阅。
2015年2月2日下午2:54:49 org.hibernate.jpa.internal.util.LogHelper logPersistenceUnitInformation
信息：HH000204:正在处理PersistenceUnitInfo[
名称：默认值
...]
2015年9月2日下午2:54:49 org.hibernate.Version日志版本
信息：hh000412:Hibernate核心{5.0.0.Final}
2015年9月2日下午2:54:49 org.hibernate.cfg.Environment
信息：HH000206:找不到hibernate.properties
2015年9月2日下午2:54:49 org.hibernate.cfg.Environment buildBytecodeProvider
信息：HH000021:字节码提供程序名称：javassist
2015年9月2日下午2:54:49 org.hibernate.annotations.common.reflection.java.JavaReflectionManager
信息：HCANN000001:Hibernate Commons注释{5.0.0.Final}
2015年9月2日下午2:54:49 org.hibernate.dialogue.dialogue
信息：HH000400:使用方言：org.hibernate.dialogue.mysqldialogue
2015年9月2日下午2:54:50 org.hibernate.tool.hbm2ddl.SchemaExport执行
信息：HH000227:正在运行hbm2ddl架构导出
2015年9月2日下午2:54:50 org.hibernate.tool.hbm2ddl.SchemaExport执行
信息：HH000230:架构导出已完成
线程“main”org.springframework.beans.factory.BeanCreationException中出现异常：创建名为“todoRepository”的bean时出错：调用init方法失败；嵌套异常是java.lang.IllegalArgumentException:不是托管类型：类实体.Todo
位于org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean（AbstractAutowireCapableBeanFactory.java:1554）
位于org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean（AbstractAutowireCapableBeanFactory.java:539）
位于org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean（AbstractAutowireCapableBeanFactory.java:475）
位于org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject（AbstractBeanFactory.java:302）
位于org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton（DefaultSingletonBeanRegistry.java:229）
位于org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean（AbstractBeanFactory.java:298）
位于org.springframework.beans.factory.support.AbstractBeanFactory.getBean（AbstractBeanFactory.java:193）
位于org.springframework.beans.factory.support.DefaultListableBeanFactory.PreInstanceSingleton（DefaultListableBeanFactory.java:687）
位于org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization（AbstractApplicationContext.java:762）
位于org.springframework.context.support.AbstractApplicationContext.refresh（AbstractApplicationContext.java:482）
位于org.springframework.context.annotation.AnnotationConfigApplicationContext。（AnnotationConfigApplicationContext.java:84）
在Main.Main（Main.java:21）
在sun.reflect.NativeMethodAccessorImpl.invoke0（本机方法）处
位于sun.reflect.NativeMethodAccessorImpl.invoke（NativeMethodAccessorImpl.java:62）
在sun.reflect.DelegatingMethodAccessorImpl.invoke（DelegatingMethodAccessorImpl.java:43）中
位于java.lang.reflect.Method.invoke（Method.java:497）
位于com.intellij.rt.execution.application.AppMain.main（AppMain.java:140）
原因：java.lang.IllegalArgumentException:不是托管类型：类实体.Todo
位于org.hibernate.jpa.internal.metamodel.MetamodelImpl.managedType（MetamodelImpl.java:210）
位于org.springframework.data.jpa.repository.support.JpaMetamodelEntityInformation。（JpaMetamodelEntityInformation.java:68）
位于org.springframework.data.jpa.repository.support.JpaEntityInformationSupport.getEntityInformation（JpaEntityInformationSupport.java:67）
位于org.springframework.data.jpa.repository.support.JpaRepositoryFactory.getEntityInformation（JpaRepositoryFactory.java:146）
位于org.springframework.data.jpa.repository.support.JpaRepositoryFactory.getTargetPository（JpaRepositoryFactory.java:90）
位于org.springframework.data.jpa.repository.support.JpaRepositoryFactory.getTargetPository（JpaRepositoryFactory.java:70）
位于org.springframework.data.repository.core.support.RepositoryFactorySupport.getRepository（RepositoryFactorySupport.java:171）
位于org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.initAndReturn（RepositoryFactoryBeanSupport.java:239）
位于org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.afterPropertieSet（RepositoryFactoryBeanSupport.java:225）
位于org.springframework.data.jpa.repository.support.JpaRepositoryFactoryBean.AfterPropertieSet（JpaRepositoryFactoryBean.java:92）
位于org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods（AbstractAutowireCapableBeanFactory.java:1613）
位于org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean（AbstractAutowireCapableBeanFactory.java:1550）
... 还有16个
进程已完成，退出代码为1
如错误消息所示，您的Todo类名是
entity.Todo
。所以它在包
实体
中

但实体管理器工厂的配置方式如下：


entityManagerFactoryBean.setPackagesToScan("net.petrikainulainen.springdata.jpa.todo");


因此，您的
实体
包未被扫描，因此JPA不知道
Todo
实体。
<