我正在尝试基于Spring，JPA和Hibernate为我的项目添加新连接。我添加第二个连接
时，我不知道我的设置有什么问题database.properties
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<persistence xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="2.0" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd">
<persistence-unit name="persistenceUnitUno" transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<properties>
<property name="hibernate.dialect" value="org.hibernate.dialect.Oracle10gDialect"/>
<!-- value="create" to build a new database on each run; value="update" to modify an existing database; value="create-drop" means the same as "create" but also drops tables when Hibernate closes; value="validate" makes no changes to the database -->
<property name="hibernate.hbm2ddl.auto" value="validate"/>
<property name="hibernate.ejb.naming_strategy" value="org.hibernate.cfg.DefaultNamingStrategy"/>
<property name="hibernate.connection.charSet" value="UTF-8"/>
<property name="hibernate.default_schema" value="user"/>
<property name="hibernate.show_sql" value="false"/>
</properties>
</persistence-unit>
<persistence-unit name="persistenceUnitDos" transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<properties>
<property name="hibernate.dialect" value="org.hibernate.dialect.Oracle10gDialect"/>
<property name="hibernate.hbm2ddl.auto" value="validate"/>
<property name="hibernate.ejb.naming_strategy" value="org.hibernate.cfg.DefaultNamingStrategy"/>
<property name="hibernate.connection.charSet" value="UTF-8"/>
<property name="hibernate.default_schema" value="user2"/>
<property name="hibernate.show_sql" value="false"/>
</properties>
</persistence-unit>
</persistence>
的persistence.xml
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:jee="http://www.springframework.org/schema/jee"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:cache="http://www.springframework.org/schema/cache"
xmlns:p="http://www.springframework.org/schema/p"
xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache.xsd">
<context:property-placeholder location="classpath*:META-INF/spring/*.properties"/>
<context:spring-configured/>
<bean id="ehcache" class="org.springframework.cache.ehcache.EhCacheManagerFactoryBean">
<property name="configLocation" value="classpath:config/ehcache.xml"/>
<property name="shared" value="true"/>
</bean>
<bean id="cacheManager" class="com.project.cache.CacheManager">
<property name="cacheManager" ref="ehcache"/>
</bean>
<context:component-scan base-package="com.project">
<context:exclude-filter expression=".*_Roo_.*" type="regex"/>
<context:exclude-filter expression="org.springframework.stereotype.Controller" type="annotation"/>
<context:exclude-filter type="regex" expression="com.project.interceptor.component.*" />
</context:component-scan>
<cache:annotation-driven/>
<bean class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close" id="dataSourceUno">
<property name="driverClassName" value="${database.driverClassName}"/>
<property name="url" value="${database.url}"/>
<property name="username" value="${database.username}"/>
<property name="password" value="${database.password}"/>
<property name="testOnBorrow" value="true"/>
<property name="testOnReturn" value="true"/>
<property name="testWhileIdle" value="true"/>
<property name="timeBetweenEvictionRunsMillis" value="1800000"/>
<property name="numTestsPerEvictionRun" value="3"/>
<property name="minEvictableIdleTimeMillis" value="1800000"/>
<property name="validationQuery" value="SELECT 1 FROM DUAL"/>
</bean>
<bean class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close" id="dataSourceDos">
<property name="driverClassName" value="${database2.driverClassName}"/>
<property name="url" value="${database2.url}"/>
<property name="username" value="${database2.username}"/>
<property name="password" value="${database2.password}"/>
<property name="testOnBorrow" value="true"/>
<property name="testOnReturn" value="true"/>
<property name="testWhileIdle" value="true"/>
<property name="timeBetweenEvictionRunsMillis" value="1800000"/>
<property name="numTestsPerEvictionRun" value="3"/>
<property name="minEvictableIdleTimeMillis" value="1800000"/>
<property name="validationQuery" value="SELECT 1 FROM DUAL"/>
</bean>
<tx:annotation-driven mode="aspectj" transaction-manager="transactionManager"/>
<bean class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean" id="entityManagerFactoryUno">
<property name="persistenceUnitName" value="persistenceUnitUno"/>
<property name="dataSource" ref="dataSourceUno"/>
</bean>
<bean class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean" id="entityManagerFactoryDos">
<property name="persistenceUnitName" value="persistenceUnitDos"/>
<property name="dataSource" ref="dataSourceDos"/>
</bean>
<bean class="org.springframework.orm.jpa.JpaTransactionManager" id="transactionManagerUno">
<property name="entityManagerFactory" ref="entityManagerFactoryUno"/>
</bean>
<bean class="org.springframework.orm.jpa.JpaTransactionManager" id="transactionManagerDos">
<property name="entityManagerFactory" ref="entityManagerFactoryDos"/>
</bean>
<bean id="org.springframework.context.annotation.internalPersistenceAnnotationProcessor"
class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor" >
<property name="defaultPersistenceUnitName" value="entityManagerFactoryUno"/>
</bean>
<bean id="validator" class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean" />
的applicationContext.xml
INFO || || Class: org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean || Line: 285 || Building JPA container EntityManagerFactory for persistence unit 'persistenceUnitUno'
INFO || || Class: org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean || Line: 285 || Building JPA container EntityManagerFactory for persistence unit 'persistenceUnitDos'
INFO || Date: || Class: java.sql.DatabaseMetaData || Line: 147 || HHH000262: Table not found: TABLE
.....
Caused by: org.hibernate.HibernateException: Missing table: TABLE
at org.hibernate.cfg.Configuration.validateSchema(Configuration.java:1335)
at org.hibernate.tool.hbm2ddl.SchemaValidator.validate(SchemaValidator.java:155)
at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:525)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1859)
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl$4.perform(EntityManagerFactoryBuilderImpl.java:852)
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl$4.perform(EntityManagerFactoryBuilderImpl.java:845)
at org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl.withTccl(ClassLoaderServiceImpl.java:398)
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:844)
at org.hibernate.jpa.HibernatePersistenceProvider.createContainerEntityManagerFactory(HibernatePersistenceProvider.java:152)
at org.hibernate.ejb.HibernatePersistence.createContainerEntityManagerFactory(HibernatePersistence.java:67)
at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:288)
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:310)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1571)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1509)
... 22 more
错误：
{{1}}
关于错误的TABLE属于第一个用户方案，它不应该发生在user2中。
答案 0 :(得分：0)
假设实体位于不同的包中，您可以通过设置packagesToScan属性来控制与每个persitence单元关联的实体，如下所示：
<bean class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean" id="entityManagerFactoryUno">
<property name="persistenceUnitName" value="persistenceUnitUno"/>
<property name="dataSource" ref="dataSourceUno"/>
<property name="packagesToScan">
<list>
<value>com.test.domain.entitiesforpu1.package1</value
<value>com.test.domain.entitiesforpu1.package2</value
</list>
<property>
</bean>
<bean class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean" id="entityManagerFactoryDos">
<property name="persistenceUnitName" value="persistenceUnitDos"/>
<property name="dataSource" ref="dataSourceDos"/>
<property name="packagesToScan">
<list>
<value>com.test.domain.entitiesforpu2.package1</value
</list>
<property>
</bean
如果实体不在单独的包中，那么另一个选项是明确列出每个持久性单元中的类，并排除任何看起来像的lised：
<persistence-unit name="persistenceUnitDos" transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<properties>
<property name="hibernate.dialect" value="org.hibernate.dialect.Oracle10gDialect"/>
<property name="hibernate.hbm2ddl.auto" value="validate"/>
<property name="hibernate.ejb.naming_strategy" value="org.hibernate.cfg.DefaultNamingStrategy"/>
<property name="hibernate.connection.charSet" value="UTF-8"/>
<property name="hibernate.default_schema" value="user2"/>
<property name="hibernate.show_sql" value="false"/>
</properties>
<class>com.acme.Entity1ForPu2</class>
<class>com.acme.Entity2ForPu2</class>
<class>com.acme.Entity3ForPu2</class>
<exclude-unlisted-classes>true</exclude-unlisted-classes>
</persistence-unit>