Error creating bean with name ‘sqlSessionFactory‘ defined in class path resource [spring-dao.xml]

于 2021-07-17 22:55:08 发布
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分类专栏： 报错处理 零基础 java 零基础 文章标签： java spring tomcat maven ssm
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本文链接：https://blog.youkuaiyun.com/S2020chenxin/article/details/118863804
本文解析了SSM框架整合过程中出现的错误，包括Bean创建异常、资源解析失败及Mapper文件未找到等问题，并提供了逐步排查与解决的方法。

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控制台报错 可以稍微看一下注释


17-Jul-2021 22:02:35.869 信息 [http-nio-8080-exec-2] org.apache.catalina.core.ApplicationContext.log Initializing Spring FrameworkServlet 'springmvc'
17-Jul-2021 22:02:38.157 严重 [http-nio-8080-exec-2] org.apache.catalina.core.ApplicationContext.log Servlet[springmvc]的Servlet.init（）引发异常
    //sqlSessionFactory在错误创建bean名字，注入出错，或者创建出错
	org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in class path resource [spring-dao.xml]:   
	//NestedIOException 内部嵌入异常
	Invocation of init method failed; nested exception is org.springframework.core.NestedIOException: 			// 错误解析资源spring-config.xml
	Failed to parse（解析） config resource: class path resource [mybatis-config.xml];
	// 错误执行Sql 参数配置异常
	nested exception is org.apache.ibatis.builder.BuilderException:
	Error parsing SQL Mapper Configuration.
    // io异常 不找到Mapper
    Cause: java.io.IOException: Could not find resource com/demowhite/dao/TestMapper.xml

第一步 BeanCreationException中在spring-dao中bean名字定义错误 ，进入spring-dao.xml中

   //sqlSessionFactory在错误创建bean名字，注入出错，或者创建出错
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in class path resource [spring-dao.xml]:

第二步 spring-dao.xml

 <!--3,sqlSessionFactory 配置-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <property name="configLocation" value="classpath:mybatis-config.xml"/>
    </bean>

第三步 检查bean配置，发现classpath:中有mybatis-config.xml

    <!--mapper注册-->
   <mappers>-->
    	<mapper resource="com/demowhite/dao/TestMapper.xml"/>-->
 	</mappers>

因为内部没有书写dao层，所以执行controller报错,将mapper注释，使用数据库是才开启
在这里插入图片描述

总结

： 因为ssm是一个整体的整合框架，所以配置时候，可能每步骤都需要扫描，确定是否 是有这个东西，没有，就会停止执行，报错；

1.- 所以在我们做每一步的时候，想清楚这个东西到底是干嘛的，
2.- 他们之间有什么联系;
3.- 我为什么要这样做，慢慢的就会清晰每一步过程的工作

									*如果觉得有用，点个👍再走呗*

完整错误代码

17-Jul-2021 22:52:18.145 信息 [RMI TCP Connection(3)-127.0.0.1] org.apache.catalina.core.ApplicationContext.log No Spring WebApplicationInitializer types detected on classpath
17-Jul-2021 22:52:18.584 信息 [RMI TCP Connection(3)-127.0.0.1] org.apache.catalina.core.ApplicationContext.log Initializing Spring FrameworkServlet 'springmvc'
17-Jul-2021 22:52:24.089 严重 [RMI TCP Connection(3)-127.0.0.1] org.apache.catalina.core.ApplicationContext.log Servlet[springmvc]的Servlet.init（）引发异常
	org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in class path resource [spring-dao.xml]: Invocation of init method failed; nested exception is org.springframework.core.NestedIOException: Failed to parse config resource: class path resource [mybatis-config.xml]; nested exception is org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: java.io.IOException: Could not find resource com/demowhite/dao/TestMapper.xml
		at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1572)
		at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539)
		at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
		at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303)
		at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
		at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299)
		at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
		at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:736)
		at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:762)
		at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480)
		at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:664)
		at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:630)
		at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:678)
		at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:549)
		at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:490)
		at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136)
		at javax.servlet.GenericServlet.init(GenericServlet.java:158)
		at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1143)
		at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1096)
		at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:989)
		at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4957)
		at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5264)
		at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
		at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:728)
		at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:700)
		at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:696)
		at org.apache.catalina.startup.HostConfig.manageApp(HostConfig.java:1783)
		at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
		at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
		at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
		at java.lang.reflect.Method.invoke(Method.java:498)
		at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:293)
		at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819)
		at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)
		at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:460)
		at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:408)
		at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
		at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
		at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
		at java.lang.reflect.Method.invoke(Method.java:498)
		at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:293)
		at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819)
		at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)
		at com.sun.jmx.remote.security.MBeanServerAccessController.invoke(MBeanServerAccessController.java:468)
		at javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1468)
		at javax.management.remote.rmi.RMIConnectionImpl.access$300(RMIConnectionImpl.java:76)
		at javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run(RMIConnectionImpl.java:1309)
		at java.security.AccessController.doPrivileged(Native Method)
		at javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(RMIConnectionImpl.java:1408)
		at javax.management.remote.rmi.RMIConnectionImpl.invoke(RMIConnectionImpl.java:829)
		at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
		at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
		at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
		at java.lang.reflect.Method.invoke(Method.java:498)
		at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:357)
		at sun.rmi.transport.Transport$1.run(Transport.java:200)
		at sun.rmi.transport.Transport$1.run(Transport.java:197)
		at java.security.AccessController.doPrivileged(Native Method)
		at sun.rmi.transport.Transport.serviceCall(Transport.java:196)
		at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:573)
		at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:834)
		at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(TCPTransport.java:688)
		at java.security.AccessController.doPrivileged(Native Method)
		at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:687)
		at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
		at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
		at java.lang.Thread.run(Thread.java:748)
	Caused by: org.springframework.core.NestedIOException: Failed to parse config resource: class path resource [mybatis-config.xml]; nested exception is org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: java.io.IOException: Could not find resource com/demowhite/dao/TestMapper.xml
		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:1631)
		at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1568)
		... 66 more
	Caused by: org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: java.io.IOException: Could not find resource com/demowhite/dao/TestMapper.xml
		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)
		... 69 more
	Caused by: java.io.IOException: Could not find resource com/demowhite/dao/TestMapper.xml
		at org.apache.ibatis.io.Resources.getResourceAsStream(Resources.java:110)
		at org.apache.ibatis.io.Resources.getResourceAsStream(Resources.java:97)
		at org.apache.ibatis.builder.xml.XMLConfigBuilder.mapperElement(XMLConfigBuilder.java:320)
		at org.apache.ibatis.builder.xml.XMLConfigBuilder.parseConfiguration(XMLConfigBuilder.java:107)
		... 71 more
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