Spring JPA 抛出 java.lang.IllegalArgumentException：不是从依赖 jar 加载的类的托管类型异常

问题描述

我正在使用 springmvc+jpa（无 spring-boot）代码库，我们将一些实体类打包在一个带有相应 hbm 映射文件的 jar 中，并作为依赖添加到当前项目中，我们有两个事务管理器，一个是基于 Hibernate 的（可以正常工作），另一个是基于 jpa entityManager 的，我配置如下

@Configuration
@EnableJpaRepositories( basePackages = "<repopackage>",bootstrapMode = BootstrapMode.LAZY)
public class DataSourceConfig {
    
    @Bean(name = "entityManagerFactory")
    @Primary
    public LocalContainerEntityManagerfactorybean entityManagerfactorybean(DataSource dataSource,MultiTenantConnectionProvider multiTenantConnectionProvider,CurrentTenantIdentifierResolver currentTenantIdentifierResolver) {
        
        Map<String,Object> props = new HashMap<String,Object>();
        props.put(Environment.MULTI_TENANT,"DATABASE");
        props.put(Environment.MULTI_TENANT_IDENTIFIER_RESOLVER,currentTenantIdentifierResolver);
        props.put(Environment.MULTI_TENANT_CONNECTION_PROVIDER,multiTenantConnectionProvider);
        props.put(Environment.DIALECT,"com.custom.PostgresqlDialect");
        props.put(Environment.SCANNER_disCOVERY,"class,hbm");
        props.put(Environment.ENABLE_LAZY_LOAD_NO_TRANS,"true");
        props.put(Environment.SHOW_sql,"true");
        LocalContainerEntityManagerfactorybean entityManagerFactory = new LocalContainerEntityManagerfactorybean();
        entityManagerFactory.setPackagesToScan(new String[] { "<domain package in current project>","domain package in dependency jar" });
        HibernateJpavendorAdapter apt = new HibernateJpavendorAdapter();
        entityManagerFactory.setDataSource(dataSource);
        entityManagerFactory.setJpavendorAdapter(apt);
        entityManagerFactory.setJpaPropertyMap(props);
        return entityManagerFactory; 
    }

    @Bean(name="transactionManager") 
    JpaTransactionManager transactionManager(EntityManagerFactory entityManagerFactory) {
        JpaTransactionManager transactionManager = new JpaTransactionManager();
        transactionManager.setEntityManagerFactory(entityManagerFactory);
        return transactionManager;
    }
}

该配置适用于当前项目中带有注释的实体类，我可以创建实现 JpaRepository 接口的存储库并能够访问它。现在，当我为依赖 jar 中存在的域对象创建存储库时，我收到此异常

Request processing Failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name &#39;resourceDetailRepository&#39;: 
factorybean threw exception on object creation; nested exception is java.lang.IllegalArgumentException: Not a managed type: class com.example.ResourceDetail
    org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006)
    org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:890)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:634)
    org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:875)

解决方法

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jpa spring-data-jpa spring-mvc