<?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: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/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd"> <!--配置业务层--> <bean id="accountService" class="com.hope.service.impl.AccountServiceImpl"> <property name="accountDao" ref="accountDao"></property> </bean> <!--配置持久层bean--> <bean id="accountDao" class="com.hope.dao.impl.AccountDaoImpl"> <property name="dataSource" ref="dataSource"></property> </bean> <!--数据源--> <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource"> <property name="driverClassName" value="com.mysql.jdbc.Driver"/> <property name="url" value="jdbc:mysql://localhost:3306/easy"/> <property name="username" value="root"/> <property name="password" value="123"/> </bean> <!--配置事务--> <!--配置事务管理器--> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource"></property> </bean> <!--配置通知--> <tx:advice id="txAdvice" transaction-manager="transactionManager"> <tx:attributes> <tx:method name="*" read-only="false" propagation="REQUIRED"/> <tx:method name="find*" read-only="true" propagation="SUPPORTS"/> </tx:attributes> </tx:advice> <!--配置aop--> <aop:config> <!--配置切入点表达式--> <aop:pointcut id="pt" expression="execution(* com.hope.service.impl.*.*(..))"></aop:pointcut> <!--建立切入点表达式和通知之间的关联--> <aop:advisor advice-ref="txAdvice" pointcut-ref="pt"></aop:advisor> </aop:config></beans>
package com.hope.service.impl;import com.hope.dao.IAccountDao;import com.hope.domain.Account;import com.hope.service.IAccountService;import org.springframework.beans.factory.annotation.Autowired;/** * @author newcityman * @date 2019/11/20 - 16:45 */public class AccountServiceImpl implements IAccountService { private IAccountDao accountDao; public void setAccountDao(IAccountDao accountDao) { this.accountDao = accountDao; } public Account findAccountById(Integer accountId) { return accountDao.findAccountById(accountId); } public void transfer(String sourceName, String targetName, Float money) { Account source = accountDao.findAccountByName(sourceName); Account targe = accountDao.findAccountByName(targetName); source.setMoney(source.getMoney() - money); targe.setMoney(targe.getMoney() + money); accountDao.updateAccount(source); int i = 1 / 0; accountDao.updateAccount(targe); }}
package com.hope.dao.impl;import com.hope.dao.IAccountDao;import com.hope.domain.Account;import org.springframework.jdbc.core.BeanPropertyRowMapper;import org.springframework.jdbc.core.support.JdbcDaoSupport;import java.util.List;/** * @author newcityman * @date 2019/11/23 - 23:38 */public class AccountDaoImpl extends JdbcDaoSupport implements IAccountDao{ public Account findAccountById(int id) { List<Account> accounts =getJdbcTemplate().query("select * from account where id=?", new BeanPropertyRowMapper<Account>(Account.class),id); return (accounts==null)?null:accounts.get(0); } public Account findAccountByName(String username) { List<Account> accounts = getJdbcTemplate().query("select * from account where name=?", new BeanPropertyRowMapper<Account>(Account.class),username); if(accounts==null){ return null; } if(accounts.size()>1){ throw new RuntimeException("结果不唯一，无法定位唯一的结果"); } return accounts.get(0); } public void updateAccount(Account account) { getJdbcTemplate().update("update account set name=?,money=? where id=?",account.getName(),account.getMoney(),account.getId()); }}
