Spring JPA（Hibernate）與tomcat

Question

這些天我正在使用JPA（Hibernate）和spring項目，我配置了spring，jpa並嘗試在tomcat7上部署該應用程序，據我所知jpa / hibernate使用實體類的第一次加載創建表，但是在這里我看不到應用程序啟動時數據庫與應用程序之間的任何連接，下面您可以看到我的配置，我已經看到很多與此相關的問題，我找不到適合我問題的正確解決方案。

任何人都可以告訴我這里是什么問題。我已經創建了一個應用程序，有時在碼頭服務器中沒有任何問題，在此先感謝您

的applicationContext-dao.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:p="http://www.springframework.org/schema/p"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
                           http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
                           http://www.springframework.org/schema/context
                           http://www.springframework.org/schema/context/spring-context-3.0.xsd
                           http://www.springframework.org/schema/tx
                           http://www.springframework.org/schema/tx/spring-tx-3.0.xsd"
       default-lazy-init="true">

    <!-- Use @Transaction annotations for managing transactions  -->
    <!--<tx:annotation-driven/>-->

    <!-- holding properties for database connectivity / -->
    <context:property-placeholder location="classpath:jdbc.properties"/>

    <tx:annotation-driven proxy-target-class="true" />
    <!-- Activates scanning of @Autowired -->
    <context:annotation-config/>

    <!-- Activates scanning of @Repository -->
    <context:component-scan base-package="lk.gov.elg"/>

    <bean class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor" />

    <tx:annotation-driven transaction-manager="transactionManager" />

    <bean id="dataSource"
          class="org.springframework.jdbc.datasource.DriverManagerDataSource"
          p:driverClassName="${jdbc.driverClassName}"
          p:url="${jdbc.url}"
          p:username="${jdbc.username}"
          p:password="${jdbc.password}"/>

    <bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager"
          p:entityManagerFactory-ref="entityManagerFactory"
          p:dataSource-ref="dataSource"/>

    <bean class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>

    <bean id="entityManagerFactory"
          class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean"
          p:dataSource-ref="dataSource"
          p:jpaVendorAdapter-ref="jpaAdapter">
        <property name="persistenceUnitName" value="eLGPersistenceUnit"></property>
        <property name="loadTimeWeaver">
            <bean class="org.springframework.instrument.classloading.SimpleLoadTimeWeaver"/>
        </property>
    </bean>

    <!-- Jpa adapter for the Hibernate -->
    <bean id="jpaAdapter"
          class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter"
          p:databasePlatform="org.hibernate.dialect.MySQLDialect"
          p:generateDdl="true"
          p:showSql="true"  >
    </bean>

    <bean
            class="org.springframework.context.annotation.CommonAnnotationBeanPostProcessor"/>

    <bean
            class="org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor"/>
</beans>

persistance.xml

<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.0"
             xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd">
    <persistence-unit name="eLGPersistenceUnit"
                      transaction-type="RESOURCE_LOCAL">
    <!--transaction-type="JTA">-->
        <provider>org.hibernate.ejb.HibernatePersistence</provider>
        <properties>
            <property name="hibernate.hbm2ddl.auto" value="validate"/>
        </properties>
        <!--<provider>org.hibernate.ejb.HibernatePersistence</provider>-->
    </persistence-unit>
</persistence>

Answer 1

我認為您的配置沒有問題，請在刪除“ default-lazy-init = true”屬性后嘗試

干杯

Answer 2

嘗試更改：

<property name="hibernate.hbm2ddl.auto" value="validate"/>

至：

<property name="hibernate.hbm2ddl.auto" value="update"/>

要么：

<property name="hibernate.hbm2ddl.auto" value="create"/>