我正在关注youtube教程,https://www.youtube.com/watch?v=rdYQOqxq9F0使用Spring和Hibernate添加,编辑,删除,搜索
收到此错误,
ERROR: org.springframework.web.servlet.DispatcherServlet - Context initialization failed
org.springframework.beans.factory.BeanDefinitionStoreException: Invalid bean definition with name 'dataSource' defined in ServletContext resource [/WEB-INF/spring-servlet.xml]: Could not resolve placeholder 'jdbc.driverClassName'
file:jdbc.properties
jdbc.dialect=org.hibernate.dialect.MySQLDialect
jdbc.databaseurl=jdbc:mysql://localhost:3306/StudentDB
jdbc.username=root
jdbc.password=admin
文件:弹簧servlet.xml中
<bean id="propertyConfigurer"
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"
p:location="/WEB-INF/jdbc.properties" />
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
destroy-method="close" p:driverClassName="${jdbc.driverClassName}"
p:url="${jdbc.databaseurl}" p:username="${jdbc.username}" p:password="${jdbc.password}" />
<bean id="sessionFactory"
class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="configLocation">
<value>classpath:hibernate.cfg.xml</value>
</property>
<property name="configurationClass">
<value>org.hibernate.cfg.AnnotationConfiguration</value>
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">${jdbc.dialect}</prop>
<prop key="hibernate.show_sql">true</prop>
</props>
</property>
</bean>
答案 0 :(得分:3)
您的属性文件中似乎没有名为jdbc.driverClassName
的属性。
应该是
jdbc.driverClassName=com.mysql.jdbc.Driver
答案 1 :(得分:3)
你在这些行中犯了错误
p:driverClassName="${jdbc.driverClassName}"
p:url="${jdbc.databaseurl}" p:username="${jdbc.username}" p:password="${jdbc.password}"
比较目录中的jdbc.properties文件。
示例jdbc.properties内容:
Dialect=org.hibernate.dialect.MySQLDialect// for jdbc use this. Driver=com.mysql.jdbc.Driver
Url=jdbc:mysql://localhost:3306/StudentDB
Username=root
Password=root
在ApplicationContext.xml中,它应该是这样的
<bean id="dataSource"
class="org.springframework.jdbc.datasource.DriverManagerDataSource"
p:driverClassName="${Dialect}"
p:url="${Url}"
p:username="${Username}"
p:password="${Password}" />