这个项目为什么启动报错,什么原因呢?

Question

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in URL [jar:file:/D:/Develop/repository/com/taotao/taotao-manager-dao/0.0.1-SNAPSHOT/taotao-manager-dao-0.0.1-SNAPSHOT.jar!/spring/applicationContext_dao.xml]: Invocation of init method failed; nested exception is org.springframework.core.NestedIOException: Failed to parse config resource: class path resource [mybatis/SqlMapConfig.xml]; nested exception is org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: java.lang.ClassCastException: com.github.pagehelper.PageHelper cannot be cast to org.apache.ibatis.plugin.Interceptor
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1583)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:553)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:735)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:866)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:542)
at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:444)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:326)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:107)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4939)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5434)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.springframework.core.NestedIOException: Failed to parse config resource: class path resource [mybatis/SqlMapConfig.xml]; nested exception is org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: java.lang.ClassCastException: com.github.pagehelper.PageHelper cannot be cast to org.apache.ibatis.plugin.Interceptor
at org.mybatis.spring.SqlSessionFactoryBean.buildSqlSessionFactory(SqlSessionFactoryBean.java:434)
at org.mybatis.spring.SqlSessionFactoryBean.afterPropertiesSet(SqlSessionFactoryBean.java:340)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1642)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1579)
... 21 more
Caused by: org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: java.lang.ClassCastException: com.github.pagehelper.PageHelper cannot be cast to org.apache.ibatis.plugin.Interceptor
at org.apache.ibatis.builder.xml.XMLConfigBuilder.parseConfiguration(XMLConfigBuilder.java:109)
at org.apache.ibatis.builder.xml.XMLConfigBuilder.parse(XMLConfigBuilder.java:92)
at org.mybatis.spring.SqlSessionFactoryBean.buildSqlSessionFactory(SqlSessionFactoryBean.java:428)
... 24 more
Caused by: java.lang.ClassCastException: com.github.pagehelper.PageHelper cannot be cast to org.apache.ibatis.plugin.Interceptor
at org.apache.ibatis.builder.xml.XMLConfigBuilder.pluginElement(XMLConfigBuilder.java:142)
at org.apache.ibatis.builder.xml.XMLConfigBuilder.parseConfiguration(XMLConfigBuilder.java:100)
... 26 more

Answer 1

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in URL [jar:file:/D:/Develop/repository/com/taotao/taotao-manager-dao/0.0.1-SNAPSHOT/taotao-manager-dao-0.0.1-SNAPSHOT.jar!/spring/applicationContext_dao.xml
首先遇到这种问题，前面几行是对你来说最有用的，我们来分析一下，org.springframework.beans.factory.BeanCreationException:这句说明了springbean工厂无法创建相应的bean的实例，其次后面的 Error creating bean with name 'sqlSessionFactory' defined in URL 说明了一个相对具体的错误，也就是说在spring与数据库有关框架整合时出现了相应的错误无法生成sqlSessionFactory工厂对象，[jar:file:/D:/Develop/repository/com/taotao/taotao-manager-dao/0.0.1-SNAPSHOT/taotao-manager-dao-0.0.1-SNAPSHOT.jar!/spring/applicationContext_dao.xml而这个路径就是你创建的配置文件的对象的位置，我给你的建议是首先你要查看，个文件applicationContext.xml这，个文件就好像一个导演，它来分配每个角色具体干什么，你要确认applicationContext.xml文件中你的关于mybatis的配置是否有正确完成，包括里面配置好的数据库的内容，加入的包等等，进一步查看你的mybatis-config的文件内容。但是你这个问题我觉得是没有正确将spring容器与你的SqlMapConfig.xml整合好的问题，仔细查看一下。英文的报错的提示已经把问题出现的点说的比较具体了，以后出问题试着多看看报错的提示。