org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'transactionManager' is defined: No matching PlatformTransactionManager bean found for qualifier 'transactionManager' - neither qualifier match nor bean name match!

at org.springframework.beans.factory.annotation.BeanFactoryAnnotationUtils.qualifiedBeanOfType(BeanFactoryAnnotationUtils.java:107)

這是xml中的配置信息

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
? ? ? xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
? ? ? xmlns:context="http://www.springframework.org/schema/context"
? ? ? xmlns:aop="http://www.springframework.org/schema/aop"
? ? ? xmlns:tx="http://www.springframework.org/schema/tx"
? ? ? xsi:schemaLocation="http://www.springframework.org/schema/beans
? ? ? http://www.springframework.org/schema/beans/spring-beans.xsd
? ? ? ? ? ? ?http://www.springframework.org/schema/context
? ? ? ? ? ?http://www.springframework.org/schema/context/spring-context.xsd
? ? ? ?http://www.springframework.org/schema/aop
? ? ? ?http://www.springframework.org/schema/aop/spring-aop.xsd
? ? ? ?http://www.springframework.org/schema/tx
? ? ? ?http://www.springframework.org/schema/tx/spring-tx.xsd">
? ?<!-- 掃描service下的包 -->
? ?<context:component-scan base-package="service"/>
? ?<!-- 數據庫連接池 -->
? ?<bean id="transactionManger" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
? ? ? ?<property name="dataSource" ref="dataSource"/>
? ?</bean>
? ?<!-- 事物管理-->
? ?<tx:annotation-driven transaction-manager="transactionManager"/>

</beans>