问题描述 spring +springmvc+mybatis,service中调用dao接口报空 搭建ssm,启动项目没问题,但是在service实现类中调用dao接口时,对象loginDao对象是空的,错误信息如下 log4j:ERROR Error occured while converting date. java.lang.NullPointerException at java.lang.System.arraycopy(Native Method) at java.lang.Abs
问题描述 spring springmvc mybatis整合时,tomcat启动正常,查询数据库时报错 Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (Access denied for user 'root'@'localhost' (using password: YE
问题描述 spring+springmvc+mybatis 报错.求大神指教. 严重: StandardWrapper.Throwableorg.springframework.beans.factory.BeanCreationException: Error creating bean with name 'index': Injection of autowired dependencies failed; nested exception is org.springframework.b