Caused by: java.lang.NoClassDefFoundError: org/apache/ibatis/transaction/TransactionFactory_caused by: java.lang.classnotfoundexception: org.a-优快云博客

本文详细解析了在Spring框架下，由于未正确配置MyBatis的TransactionFactory导致的ClassNotFoundException异常。通过深入堆栈跟踪，揭示了问题根源，并提供了解决方案：在pom.xml中添加mybatis依赖。

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Caused by: java.lang.ClassNotFoundException: org.apache.ibatis.transaction.TransactionFactory
    at org.apache.catalina.loader.WebappClassLoader.loadClass (WebappClassLoader.java:1702)
    at org.apache.catalina.loader.WebappClassLoader.loadClass (WebappClassLoader.java:1547)
    at java.lang.Class.getDeclaredConstructors0 (Native Method)
    at java.lang.Class.privateGetDeclaredConstructors (Class.java:2671)
    at java.lang.Class.getConstructor0 (Class.java:3075)
    at java.lang.Class.getDeclaredConstructor (Class.java:2178)
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate (SimpleInstantiationStrategy.java:78)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean (AbstractAutowireCapableBeanFactory.java:1262)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance (AbstractAutowireCapableBeanFactory.java:1164)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean (AbstractAutowireCapableBeanFactory.java:538)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean (AbstractAutowireCapableBeanFactory.java:498)
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0 (AbstractBeanFactory.java:320)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton (DefaultSingletonBeanRegistry.java:222)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean (AbstractBeanFactory.java:318)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean (AbstractBeanFactory.java:199)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons (DefaultListableBeanFactory.java:827)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization (AbstractApplicationContext.java:863)
    at org.springframework.context.support.AbstractApplicationContext.__refresh (AbstractApplicationContext.java:546)
    at org.springframework.context.support.AbstractApplicationContext.refresh (AbstractApplicationContext.java)
    at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext (ContextLoader.java:400)
    at org.springframework.web.context.ContextLoader.initWebApplicationContext (ContextLoader.java:291)
    at org.springframework.web.context.ContextLoaderListener.contextInitialized (ContextLoaderListener.java:103)
    at org.apache.catalina.core.StandardContext.listenerStart (StandardContext.java:4939)
    at org.apache.catalina.core.StandardContext.startInternal (StandardContext.java:5434)
    at org.apache.catalina.util.LifecycleBase.start (LifecycleBase.java:150)
    at org.apache.catalina.core.ContainerBase$StartChild.call (ContainerBase.java:1559)
    at org.apache.catalina.core.ContainerBase$StartChild.call (ContainerBase.java:1549)
    at java.util.concurrent.FutureTask.run (FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker (ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor.java:617)
    at java.lang.Thread.run (Thread.java:745)

解决办法:pom.xml新增jar

	<dependency>
			<groupId>org.mybatis</groupId>
			<artifactId>mybatis</artifactId>
			<version>3.4.6</version>
		</dependency>