When learning to write XML transactions in spring, you can refer to ‘transactionmanager’ while setting bean property ‘transactionmanager’

Warning: Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userService' defined in file [D:\Codeworkstation\IDEAGuigu\Spring5\spring5_tedemo1\out\production\spring5_tedemo1\com\atgui\spring\service\UserService.class]: Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'txadvice': Cannot resolve reference to bean 'transactionManager' while setting bean property 'transactionManager'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'transactionManager' available

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userService' defined in file [D:\Codeworkstation\IDEAGuigu\Spring5\spring5_tedemo1\out\production\spring5_tedemo1\com\atgui\spring\service\UserService.class]: Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'txadvice': Cannot resolve reference to bean 'transactionManager' while setting bean property 'transactionManager'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'transactionManager' available

XML configuration transaction code

 <!-- Create the transaction manager - >
    <bean id="dataSourceTransactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<! -- Inject data source -- >
        <property name="dataSource" ref="dataSource"></property>
    </bean>

    <! -2 Configuration Notifications-->
    <tx:advice id="txadvice">
        <! -- Configure transaction parameters -->
        <tx:attributes>
            <! -- Specify which rule's method to add a transaction on top of -->
            <tx:method name="account" propagation="REQUIRED"/>
            <! --<tx:method name="account*"/>-->
        </tx:attributes>
    </tx:advice>

    <! -3 Configuring entry points and cut-planes -->
    <aop:config>
        <! -- Configure entry points -->
        <aop:pointcut id="pt" expression="execution(* com.atgui.spring.service.UserService.*(...))" />
        <! --configuration cutscene ->
        <aop:advisor advice-ref="txadvice" pointcut-ref="pt"/>
    </aop:config>

Service layer code

@Service
//@Transactional
public class UserService {

    @Autowired
    private UserDao userDao;

    public void account(){

        //Reduce money
        userDao.reducemo();
        int i=13/0;
        //Increase money
        userDao.addmo();
    }
}

The above error appears when running

You can modify the error code section in XML

 <!-- Creating a Transaction Manager-->
    <bean id="dataSourceTransactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<!--        Injecting data sources-->
        <property name="dataSource" ref="dataSource"></property>
    </bean>

Change the above id = “datasourcetransactionmanager” to id = “transactionmanager”\

That’s it

    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<!--        Injecting data sources-->
        <property name="dataSource" ref="dataSource"></property>
    </bean>
``

This will solve the above problem