我在尝试将值从属性文件传递给
Spring时遇到以下错误,因此我不必直接在hibernate.cfg.xml中提供它们.有更好的(和正确的)方法吗？我知道正在引用属性文件,因为如果我输入了无效的密码,它就会失败.我会感激任何帮助.
WARNING: No connection properties specified - the user must supply JDBC connections
Exception in thread "main" 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:426)
这是applicationContext.xml：
<context:component-scan base-package="cmsutil"/>
<context:property-placeholder location="jdbc.properties"/>
<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="sessionFactory"
class="org.springframework.orm.hibernate3.annotation.AnnotationSessionfactorybean"
p:dataSource-ref="dataSource"
p:configurationClass="org.hibernate.cfg.AnnotationConfiguration"
p:packagesToScan="cmsutil.*">
<property name="exposeTransactionAwareSessionFactory" value="false" />
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">${hibernate.dialect}</prop>
<prop key="hibernate.show_sql">${hibernate.show_sql}</prop>
<prop key="hibernate.format_sql">${hibernate.format_sql}</prop>
<prop key="hibernate.generate_statistics">${hibernate.generate_statistics}</prop>
</props>
</property>
</bean>
<bean id="txnManager"
class="org.springframework.orm.hibernate3.HibernateTransactionManager"
p:sessionFactory-ref="sessionFactory"/>
<bean class="org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor"/>
这是我的hibernate.cfg.xml文件：
<hibernate-configuration>
<session-factory>
<property name="hibernate.dialect">org.hibernate.dialect.MysqLDialect</property>
<mapping resource="cmsutil.entity/contentcomponent.hbm.xml"/>
</session-factory>
</hibernate-configuration>
Per Ramesh的请求 – web.xml
<web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/applicationContext.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<servlet>
<servlet-name>dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>2</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dispatcher</servlet-name>
<url-pattern>*.htm</url-pattern>
</servlet-mapping>
<session-config>
<session-timeout>
30
</session-timeout>
</session-config>
<welcome-file-list>
<welcome-file>redirect.jsp</welcome-file>
</welcome-file-list>
</web-app>
对于Ramesh,这是我的jdbc.properties,位于根目录(/src/java/jdbc.properties)中
jdbc.driverClassName=com.MysqL.jdbc.Driver jdbc.url=jdbc:MysqL://xx:3306/x jdbc.username=y jdbc.password=z hibernate.dialect=org.hibernate.dialect.MysqLDialect hibernate.show_sql=true hibernate.format_sql=false hibernate.generate_statistics=false
解决方法
在applicationContext.xml中添加此bean
<bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="location"><value>classpath:jdbc.properties</value></property>
</bean>
在web.xml而不是监听器中更新它
<servlet>
<servlet-name>context</servlet-name>
<servlet-class>
org.springframework.web.context.ContextLoaderServlet
</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
