在Spring中配置jdbc时,引用的是dbcp.jar包,在db.properties配置文件中,使用了之前的properties配置文件的用户名username(MySql用户名)
然后在启动服务器报了如下几个异常:
1、org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘sessionFactory‘ defined in class path resource [applicationContext.xml]: Invocation of init method failed; nested exception is org.hibernate.service.spi.ServiceException: Unable to create requested service [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment]
2、Caused by: org.hibernate.service.spi.ServiceException: Unable to create requested service [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment]
3、Caused by: org.hibernate.HibernateException: Access to DialectResolutionInfo cannot be null when ‘hibernate.dialect‘ not set
applicationContext.xml配置文件
db.properties.xml配置文件
后来检查发现,在加载读取配置文件的标签中
<context:property-placeholder location="classpath:dataSource.properties" /> 少了一条属性system-properties-mode="FALLBACK",
系统默认为system-properties-mode="ENVIRONMENT" 意思就是从系统环境中去读取,把电脑名当做MySlq的用户名,修改之后运行成功。