能不能给份代码啊 老师
<?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:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd "> <!-- 引入属性文件 --> <context:property-placeholder location="classpath:db.properties" /> <!-- 配置c3p0连接池 --> <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"> <property name="driverClass" value="${core.driverClassName}" /> <property name="jdbcUrl" value="${core.url}" /> <property name="user" value="${core.username}" /> <property name="password" value="${core.password}" /> </bean> <!-- 配置业务层 --> <bean id="accountService" class="com.spring.demo3.AccountServiceImpl"> <property name="accountDao" ref="accountDao" /> </bean> <!-- 配置dao层 --> <bean id="accountDao" class="com.spring.demo3.AccountDaoImpl"> <property name="dataSource" ref="dataSource" /> </bean> <!-- 配置事务管理器 --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource" /> </bean> <!-- 开启注解事务 --> <tx:annotation-driven transaction-manager="transactionManager"/> </beans>