Question

我创建了一个maven web项目。堆栈是Spring + hibernate + jersey。

我在src / main / resources / path下有这个hibernate.cfg.xml。当我尝试将它部署为tomcat时，我得到了这个堆栈跟踪，

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'WorkspacesDBSessionFactory' defined in class path resource [ApplicationContext.xml]: Invocation of init method failed; nested exception is org.hibernate.HibernateException: Hibernate Dialect must be explicitly set
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1512)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:521)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:458)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:296)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:293)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:917)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:860)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:775)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:489)
    ... 24 more
Caused by: org.hibernate.HibernateException: Hibernate Dialect must be explicitly set
    at org.hibernate.dialect.DialectFactory.determineDialect(DialectFactory.java:57)
    at org.hibernate.dialect.DialectFactory.buildDialect(DialectFactory.java:39)
    at org.hibernate.cfg.SettingsFactory.determineDialect(SettingsFactory.java:422)
    at org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:128)
    at org.hibernate.cfg.Configuration.buildSettings(Configuration.java:2009)
    at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1292)
    at org.springframework.orm.hibernate3.LocalSessionFactoryBean.newSessionFactory(LocalSessionFactoryBean.java:863)
    at org.springframework.orm.hibernate3.LocalSessionFactoryBean.buildSessionFactory(LocalSessionFactoryBean.java:782)
    at org.springframework.orm.hibernate3.AbstractSessionFactoryBean.afterPropertiesSet(AbstractSessionFactoryBean.java:188)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1571)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1509)
    ... 34 more

当我检查DialectFactory.java:57时，我找到了代码，

public static Dialect determineDialect(String databaseName, int databaseMajorVersion) {
    if ( databaseName == null ) {
        throw new HibernateException( "Hibernate Dialect must be explicitly set" );
    }

所以实际问题是没有加载hibernate.cfg.xml。所以我删除了文件并尝试了部署。我再次得到了相同的堆栈跟踪。

我的ApplicationContext.xml是，

<?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:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
    xmlns:util="http://www.springframework.org/schema/util" xmlns:jee="http://www.springframework.org/schema/jee"
    xsi:schemaLocation="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/aop http://www.springframework.org/schema/aop/spring-aop-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/util http://www.springframework.org/schema/util/spring-util-3.2.xsd
                        http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.2.xsd">

    <context:annotation-config />
    <context:component-scan base-package="org.work.autogen, org.work.db.api, org.work.services, org.work.routes">
    </context:component-scan>

    <bean id="log4jInitializer"
        class="org.springframework.beans.factory.config.MethodInvokingFactoryBean">
        <property name="targetClass" value="org.springframework.util.Log4jConfigurer" />
        <property name="targetMethod" value="initLogging" />
        <property name="arguments">
            <list>
                <value>classpath:log4j.properties</value>
            </list>
        </property>
    </bean>

    <bean id="WorkspacesDBSessionFactory"
        class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
        <!-- <property name="mappingResources">
            <list>
                <value>Appraisal.hbm.xml</value>
                <value>Managers.hbm.xml</value>
                <value>EmployeeSecretUuid.hbm.xml</value>
                <value>Work.hbm.xml</value>
                <value>Company.hbm.xml</value>
                <value>Employee.hbm.xml</value>
            </list>
        </property> -->
        <property name="hibernateProperties">
            <props>
                <prop key="dialect">org.hibernate.dialect.MySQL5Dialect</prop>
                <prop key="hibernate.default_schema">Workspacedb</prop>
            </props>
        </property>
    </bean>
</beans>

我的Hibernate.cfg.xml是，

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
    <session-factory><!-- name="sessionFactory"> --> 
        <property name="hibernate.bytecode.use_reflection_optimizer">false</property>
        <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
        <property name="hibernate.connection.password">password</property>
        <property name="hibernate.connection.url">jdbc:mysql://localhost:3306/Workspacedb</property>
        <property name="hibernate.connection.username">workadmin</property>
        <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
        <property name="hibernate.search.autoregister_listeners">false</property>
        <property name="hibernate.show_sql">true</property>
        <mapping resource="Appraisal.hbm.xml" />
        <mapping resource="Managers.hbm.xml" />
        <mapping resource="EmployeeSecretUuid.hbm.xml" />
        <mapping resource="Work.hbm.xml" />
        <mapping resource="Company.hbm.xml" />
        <mapping resource="Employee.hbm.xml" />
    </session-factory>
</hibernate-configuration>

我是如何做到这一点的？

感谢。

Answer 1

根据日志，LocalSessionFactoryBean正在尝试配置Hibernate。

同样在你的Spring配置文件中，你没有提到你有一个单独的Hibernate配置文件。

所以在这段代码中：

<bean id="WorkspacesDBSessionFactory"
        class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
        <property name="hibernateProperties">
            <props>
                <prop key="dialect">org.hibernate.dialect.MySQL5Dialect</prop>
                <prop key="hibernate.default_schema">Workspacedb</prop>
            </props>
        </property>
</bean>

您只是为dialect和hibernate.default_schema设置了休眠属性。

要解决此问题，请将属性dialect更改为hibernate.dialect。

现在，如果您仍想使用Hibernate配置文件，则需要在spring配置文件中设置configLocation属性。

以下是有关如何使用configLocation属性的示例：

<bean id="WorkspacesDBSessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
        <property name="configLocation" value="classpath:hibernate.cfg.xml" />
    </bean>

您可以在此帖中看到详细说明： applicationContext.xml with datasource or hibernate.cfg.xml. Difference?

Answer 2

您的hibernate.cfg.xml必须在CLASSPATH中才能自动获取。尝试输入/ src / main / java。因为Hibernate首先在CLASSPATH中找到默认值（/ src / main / java）

hibernate.cfg.xml没有被选中

2 个答案: