I. 개요
두 가지 범주로 Spring의 트랜잭션 관리 :
- 프로그래밍 트랜잭션 관리 (수동 트랜잭션 관리를 완료하기 위해 코드를 작성)
- 선언적인 트랜잭션 관리 (수동으로 코드를 작성할 필요가 없습니다, 당신이 구성해야합니다)
둘째, 작업 준비
1. 테이블을 만듭니다
CREATE TABLE `account` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`name` varchar(10) DEFAULT NULL,
`money` int(11) DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB
2. 프로젝트를 만들고 메이븐의 도입에 따라
프로젝트를 만들고에서 다음 메이븐 의존 소개 :
<!-- https://mvnrepository.com/artifact/org.springframework/spring-context -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>5.1.5.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>5.1.5.RELEASE</version>
</dependency>
<!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.13</version>
</dependency>
<!-- https://mvnrepository.com/artifact/c3p0/c3p0 -->
<dependency>
<groupId>c3p0</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.1.2</version>
</dependency>
<!-- Spring 整合测试的包 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>5.1.5.RELEASE</version>
</dependency>
디렉토리 구조는 다음과 같이 :
![](https://img2018.cnblogs.com/blog/1710915/201908/1710915-20190815014143406-2018767930.jpg)
3. 엔티티 클래스를 작성한다
public class Account {
private Integer id;
private String name;
private Integer money;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Integer getMoney() {
return money;
}
public void setMoney(Integer money) {
this.money = money;
}
@Override
public String toString() {
return "Account [id=" + id + ", name=" + name + ", money=" + money + "]";
}
}
다오의 층 (4)의 제조
쓰기 인터페이스
/**
* 银行账户的相关操作 此处用了@see注释,在实现类可以继承接口中方法的注释内容
*
* @author hao
* @see AccountDaoImpl
*
*/
public interface IAccountDao {
/**
* 添加账户
*
* @param account 要添加的账户
*/
public void add(Account account);
/**
* 转出的方法
*
* @param from :转出的账户,打出钱
* @param money :要转账金额
*/
public void out(Account from, Integer money);
/**
* 转出的方法
*
* @param to 转入的账户,收到钱
* @param money 要转账金额
*/
public void in(Account to, Integer money);
/**
* 通过名字查询账户
* @param name 账户名
* @return
*/
public Account selectOneByName(String name);
}
구현 클래스
public class AccountDaoImpl implements IAccountDao{
@Autowired
@Qualifier("jdbcTemplate")
private JdbcTemplate jdbcTemplate;
@Override
public void add(Account account) {
String sql = "insert into account values(null,?,?)";
jdbcTemplate.update(sql,account.getName(),account.getMoney());
}
@Override
public Account selectOneByName(String name) {
String sql = "select * from account where name = ?";
Account account = null;
try {//这里需要捕获结果集为空时的异常
account = jdbcTemplate.queryForObject(sql, new RowMapper<Account>() {
@Override
public Account mapRow(ResultSet rs, int rowNum) throws SQLException {
Account account = new Account();
account.setId(rs.getInt("id"));
account.setName(rs.getString("name"));
account.setMoney(rs.getInt("money"));
return account;
}
}, name);
} catch (EmptyResultDataAccessException e) {
e.printStackTrace();
return null;
}
return account;
}
public void out(Account from, Integer money) {
String sql = "update account set money = money-? where name =? ";
jdbcTemplate.update(sql, money,from.getName());
}
public void in(Account to, Integer money) {
String sql ="update account set money = money+? where name =?";
jdbcTemplate.update(sql,money,to.getName());
}
}
비즈니스 계층
인터페이스
/**
*
* @author hao
* @see AccountServiceImpl
*/
public interface IAccountService {
/**
* 向数据库中添加用户
*
* @param account 要添加的用户对象
*/
public void addAccount(Account account);
/**
* 转账的方法
*
* @param from 转出的账户
* @param to 转入的账户
* @param money 转账金额
*/
public void transfer(Account from, Account to, Integer money);
/**
*
* @param name 需要查询的账户名
* @return
*/
public Account findAccountByName(String name);
}
구현 클래스
/**
* 没有添加事务
* @author hao
*
*/
public class AccountServiceImpl implements IAccountService {
// 注入 accountDao 利用setter方法注入属性
private IAccountDao accountDao;
public void setAccountDao(IAccountDao accountDao) {
this.accountDao = accountDao;
}
@Override
public void addAccount(Account account) {
accountDao.add(account);
}
@Override
public Account findAccountByName(String name) {
Account account = accountDao.selectOneByName(name);
return account;
}
@Override
public void transfer(Account from, Account to, Integer money) {
accountDao.out(from, money);// 转出钱
int i= 1/0 //出现异常时
accountDao.in(to, money);// 收入钱
}
}
6. XML 구성
<?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"
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">
<context:property-placeholder location="classpath:jdbc.properties"/>
<!-- 配置c3p0连接池 -->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="${jdbc.driver}"/>
<property name="jdbcUrl" value="${jdbc.url}"/>
<property name="user" value="${jdbc.user}"/>
<property name="password" value="${jdbc.password}"/>
</bean>
<!-- 这里需要注入数据源 -->
<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
<property name="dataSource" ref="dataSource"></property>
</bean>
<!-- 此处声明Dao层类,用注解的方式将jdbcTemplate注入到了accountDao中,也可用其他方式 -->
<bean id="accountDao" class="com.hao.tx.dao.impl.AccountDaoImpl"></bean>
<!-- 此处声明业务层类,用setter的方式注入了accountDao -->
<bean id="accountService" class="com.hao.tx.service.impl.AccountServiceImpl">
<property name="accountDao" ref="accountDao"></property>
</bean>
</beans>
7. 테스트
@Test
public void test02() {
System.out.println("转账之前....");
Account a = accountService.findAccountByName("a");
if(a != null) {
System.out.println(a);
}
Account b = accountService.findAccountByName("b");
if(b!=null) {
System.out.println(b);
}
try {//这里捕获转账时出现的异常
System.out.println("开始转账.....");
accountService.transfer(a, b, 100);
}catch(ArithmeticException e) {
e.printStackTrace();
}finally {
System.out.println("转账之后....");
Account a_trans = accountService.findAccountByName("a");
if(a != null) {
System.out.println(a_trans);
}
Account b_trans = accountService.findAccountByName("b");
if(b!=null) {
System.out.println(b_trans);
}
}
}
결과 분석 :
예외가 발생하더라도, 어떤 트랜잭션이 존재하지 않을 경우, 데이터베이스의 데이터가 변경됩니다, 발견 할 것이다 test02 후 테스트 클래스를 실행
다음과 같습니다 :
![](https://img2018.cnblogs.com/blog/1710915/201908/1710915-20190815014141490-318731815.jpg)
![](https://img2018.cnblogs.com/blog/1710915/201908/1710915-20190815014143344-393254097.jpg)
셋째, 프로그램 거래
위의 프로그램은 트랜잭션을 추가하지 않습니다 후속, 부호화 방법은 전체 트랜잭션 관리 매뉴얼 실제로 거래 된 개체를 관리하는 데 트랜잭션 관리자를 필요로 봄 템플릿 (도구) 트랜잭션 관리를 제공하는
플랫폼 트랜잭션 관리자에, 당신은에 액세스 할 수 있습니다 [봄] 사무
1. 비즈니스 계층 트랜잭션 코드에 대한 템플릿을 사용하여
비즈니스 클래스를 생성하고 트랜잭션 관리 프로그램 트랜잭션을 사용, 봄이 제공 관리를위한 템플릿
/**
* 编程式事务
*
* @author hao
*
*/
public class AccountServiceImpl_Program implements IAccountService {
// 注入 accountDao 利用setter方法注入属性
private IAccountDao accountDao;
public void setAccountDao(IAccountDao accountDao) {
this.accountDao = accountDao;
}
// 注入 transactionTemplate 利用setter方法注入属性
private TransactionTemplate transactionTemplate;
public void setTransactionTemplate(TransactionTemplate transactionTemplate) {
this.transactionTemplate = transactionTemplate;
}
@Override
public void addAccount(Account account) {
accountDao.add(account);
}
@Override
public Account findAccountByName(String name) {
Account account = accountDao.selectOneByName(name);
return account;
}
@Override
public void transfer(Account from, Account to, Integer money) {
transactionTemplate.execute(new TransactionCallbackWithoutResult() {
@Override
protected void doInTransactionWithoutResult(TransactionStatus status) {
accountDao.out(from, money);
int d = 1 / 0;
accountDao.in(to, money);
}
});
}
}
2. XML의 구성을 확인
<?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"
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">
<context:property-placeholder location="classpath:jdbc.properties" />
<!-- 配置c3p0连接池 -->
<bean id="dataSource"
class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="${jdbc.driver}" />
<property name="jdbcUrl" value="${jdbc.url}" />
<property name="user" value="${jdbc.user}" />
<property name="password" value="${jdbc.password}" />
</bean>
<!-- 在容器中声明jdbc模版,这里需要注入数据源 -->
<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
<property name="dataSource" ref="dataSource"></property>
</bean>
<!-- 此处声明Dao层类,用注解的方式将jdbcTemplate注入到了accountDao中,也可用其他方式 -->
<bean id="accountDao" class="com.hao.tx.dao.impl.AccountDaoImpl"></bean>
<!-- (三)、在业务层注入模板类管理事务 -->
<!-- 此处声明业务层类,用setter的方式注入了accountDao 和 管理事务的模版 -->
<bean id="accountService" class="com.hao.tx.service.impl.AccountServiceImpl_Program">
<property name="accountDao" ref="accountDao"></property>
<property name="transactionTemplate" ref="transactionTemplate"></property>
</bean>
<!-- (一)、注册事务管理器: -->
<!-- 配置事务管理器 这里DataSourceXXX...可以用做Spring自己的或者MyBatis的事务管理器 -->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<!-- 需要注入连接池,通过连接池获得连接 -->
<property name="dataSource" ref="dataSource" />
</bean>
<!-- (二)、注册事务模板类: -->
<!-- 事务管理的模板 -->
<bean id="transactionTemplate" class="org.springframework.transaction.support.TransactionTemplate">
<property name="transactionManager" ref="transactionManager" />
</bean>
</beans>
3. 테스트
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("classpath:applicationContext1.xml")
public class TxAcTest001 {
@Autowired
@Qualifier("accountService")
private IAccountService accountService;
@Test
public void test01() {
System.out.println("转账之前....");
Account a = accountService.findAccountByName("txa");
if (a != null) {
System.out.println(a);
}
Account b = accountService.findAccountByName("txb");
if (b != null) {
System.out.println(b);
}
try {// 这里捕获转账时出现的异常
System.out.println("开始转账.....");
accountService.transfer(a, b, 100); //会出现异常
} catch (ArithmeticException e) {
e.printStackTrace();
} finally {
System.out.println("转账之后....");
Account a_trans = accountService.findAccountByName("txa");
if (a != null) {
System.out.println(a_trans);
}
Account b_trans = accountService.findAccountByName("txb");
if (b != null) {
System.out.println(b_trans);
}
}
}
}
결과는 다음과 같다 :
![](https://img2018.cnblogs.com/blog/1710915/201908/1710915-20190815014141399-218133253.jpg)
![](https://img2018.cnblogs.com/blog/1710915/201908/1710915-20190815014141403-1430064913.jpg)
4. 수동으로 코딩 단점 :
코드의 양, 침입 코드를 증가.
넷째, 선언적인 트랜잭션
선언적인 트랜잭션 관리 :( 원래 방법)
기반으로 TransactionProxyFactoryBean.
1. 비즈니스 클래스
논리 비즈니스 클래스를 변경하지 않고, 사실, 학습의 사용을 테스트하려면 여기를, AccountServiceImpl_DeclaProxyF 클래스를 작성, 당신은 비즈니스 클래스의 직접적인 준비를 복사 할 수 있습니다.
2. XML 구성하기
<?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"
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">
<context:property-placeholder
location="classpath:jdbc.properties" />
<!-- 配置c3p0连接池 -->
<bean id="dataSource"
class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="${jdbc.driver}" />
<property name="jdbcUrl" value="${jdbc.url}" />
<property name="user" value="${jdbc.user}" />
<property name="password" value="${jdbc.password}" />
</bean>
<!-- 在容器中声明jdbc模版,这里需要注入数据源 -->
<bean id="jdbcTemplate"
class="org.springframework.jdbc.core.JdbcTemplate">
<property name="dataSource" ref="dataSource"></property>
</bean>
<!-- 此处声明Dao层类,用注解的方式将jdbcTemplate注入到了accountDao中,也可用其他方式 -->
<bean id="accountDao" class="com.hao.tx.dao.impl.AccountDaoImpl"></bean>
<!-- 此处声明业务层类,用setter的方式注入了accountDao 和 管理事务的模版 -->
<bean id="accountService"
class="com.hao.tx.service.impl.AccountServiceImpl_DeclaProxyF">
<property name="accountDao" ref="accountDao"></property>
</bean>
<!-- (一)、注册事务管理器: -->
<!-- 配置事务管理器 这里DataSourceXXX...可以用做Spring自己的或者MyBatis的事务管理器 -->
<bean id="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<!-- 需要注入连接池,通过连接池获得连接 -->
<property name="dataSource" ref="dataSource" />
</bean>
<!-- (二)、创建业务层代理对象: 配置生成代理对象 -->
<bean id="accountServiceProxy"
class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">
<!-- 目标对象 -->
<property name="target" ref="accountService" />
<!-- 注入事务管理器 -->
<property name="transactionManager" ref="transactionManager" />
<!-- 事务的属性设置 -->
<property name="transactionAttributes">
<props> <!-- key值表示要进行事务管理的方法 -->
<prop key="transfer">PROPAGATION_REQUIRED</prop>
</props>
</property>
</bean>
</beans>
3. 테스트
테스트에 그 참고하면에 주입하는 프록시 객체
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("classpath:applicationContext2.xml")
public class TxAcTest002 {
@Autowired
@Qualifier("accountServiceProxy") // 这里注入的代理对象
private IAccountService accountService;
@Test
public void test01() {
System.out.println("转账之前....");
Account a = accountService.findAccountByName("txa");
if (a != null) {
System.out.println(a);
}
Account b = accountService.findAccountByName("txb");
if (b != null) {
System.out.println(b);
}
try {// 这里捕获转账时出现的异常
System.out.println("开始转账.....");
accountService.transfer(a, b, 100); //会出现异常
} catch (ArithmeticException e) {
e.printStackTrace();
} finally {
System.out.println("转账之后....");
Account a_trans = accountService.findAccountByName("txa");
if (a != null) {
System.out.println(a_trans);
}
Account b_trans = accountService.findAccountByName("txb");
if (b != null) {
System.out.println(b_trans);
}
}
}
}
4.주의 사항과 단점
注意事项:配置代理对象时:prop格式:PROPAGATION , ISOLATION , readOnly, -Exception, +Exception 依次是:传播行为、隔离级别、事务是否只读、发生哪些异常可以回滚事务(所有的异常都回滚)、发生了哪些异常不回滚。
缺点:就是需要为每一个管理事务的类生成代理.需要为每个类都需要进行配置。
声明值事务-基于AspectJ XML方式
1. 业务类
创建AccountServiceImpl_DeclaAspecJ类,这里是为了学习时测试使用,其实无需改变业务类的任何逻辑,可以直接copy准备中的业务类。
2. XML 中的配置
<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">
<context:property-placeholder location="classpath:jdbc.properties" />
<!-- 配置c3p0连接池 -->
<bean id="dataSource"
class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="${jdbc.driver}" />
<property name="jdbcUrl" value="${jdbc.url}" />
<property name="user" value="${jdbc.user}" />
<property name="password" value="${jdbc.password}" />
</bean>
<!-- 在容器中声明jdbc模版,这里需要注入数据源 -->
<bean id="jdbcTemplate"
class="org.springframework.jdbc.core.JdbcTemplate">
<property name="dataSource" ref="dataSource"></property>
</bean>
<!-- 此处声明Dao层类,用注解的方式将jdbcTemplate注入到了accountDao中,也可用其他方式 -->
<bean id="accountDao" class="com.hao.tx.dao.impl.AccountDaoImpl"></bean>
<!-- 此处声明业务层类,用setter的方式注入了accountDao 和 管理事务的模版 -->
<bean id="accountService"
class="com.hao.tx.service.impl.AccountServiceImpl_DeclaAspecJ">
<property name="accountDao" ref="accountDao"></property>
</bean>
<!-- (一)、注册事务管理器: -->
<!-- 配置事务管理器 这里DataSourceXXX...可以用做Spring自己的或者MyBatis的事务管理器 -->
<bean id="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<!-- 需要注入连接池,通过连接池获得连接 -->
<property name="dataSource" ref="dataSource" />
</bean>
<!-- (二)、定义增强(事务管理) -->
<!-- 定义一个增强 -->
<tx:advice id="txAdvice"
transaction-manager="transactionManager">
<!-- 增强(事务)的属性的配置 -->
<tx:attributes>
<!-- isolation:DEFAULT ,事务的隔离级别。
propagation:事务的传播行为.
read-only:false,不是只读
timeout:-1
no-rollback-for:发生哪些异常不回滚
rollback-for:发生哪些异常回滚事务
-->
<tx:method name="transfer" isolation="DEFAULT" propagation="REQUIRED"/>
</tx:attributes>
</tx:advice>
<!-- (三)、定义aop的配置(切点和通知的组合) -->
<!-- aop配置定义切面和切点的信息 -->
<aop:config>
<!-- 定义切点:哪些类的哪些方法应用增强 -->
<aop:pointcut
expression="execution(* com.hao.tx.service.impl.AccountServiceImpl_DeclaAspecJ+.*(..))"
id="mypointcut" />
<!-- 定义切面: -->
<aop:advisor advice-ref="txAdvice" pointcut-ref="mypointcut" />
</aop:config>
</beans>
3. 测试
这里无需注入代理对象
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("classpath:applicationContext3.xml")
public class TxAcTest003 {
@Autowired
@Qualifier("accountService") // 注入Service对象,不需要注入代理对象(生成这个类的时候,已经是代理对象.)
private IAccountService accountService;
@Test
public void test01() {
System.out.println("转账之前....");
Account a = accountService.findAccountByName("txa");
if (a != null) {
System.out.println(a);
}
Account b = accountService.findAccountByName("txb");
if (b != null) {
System.out.println(b);
}
try {// 这里捕获转账时出现的异常
System.out.println("开始转账.....");
accountService.transfer(a, b, 100); //会出现异常
} catch (ArithmeticException e) {
e.printStackTrace();
} finally {
System.out.println("转账之后....");
Account a_trans = accountService.findAccountByName("txa");
if (a != null) {
System.out.println(a_trans);
}
Account b_trans = accountService.findAccountByName("txb");
if (b != null) {
System.out.println(b_trans);
}
}
}
}
声明值事务-基于AspectJ 注解方式
1. 业务类
- 在Service上使用注解@Transactional,此注解可以标注在方法上,还可以标注在类上:
- 注解中有属性值:
- isolation
- propagation
- readOnly
...
/**
* 声明式事务-基于AspectJ 注解方式
*
* @author hao
*
*/
public class AccountServiceImpl_DeclaAspecJAnno implements IAccountService {
// 注入 accountDao 利用setter方法注入属性
private IAccountDao accountDao;
public void setAccountDao(IAccountDao accountDao) {
this.accountDao = accountDao;
}
@Override
public void addAccount(Account account) {
accountDao.add(account);
}
@Override
public Account findAccountByName(String name) {
Account account = accountDao.selectOneByName(name);
return account;
}
@Override
@Transactional(isolation=Isolation.DEFAULT,propagation=Propagation.REQUIRED,readOnly=false)
public void transfer(Account from, Account to, Integer money) {
accountDao.out(from, money);// 转出钱
int i =1/0; // 中间出现异常
accountDao.in(to, money);// 收入钱
}
}
2. XML中开启注解
<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">
<context:property-placeholder location="classpath:jdbc.properties" />
<!-- 配置c3p0连接池 -->
<bean id="dataSource"
class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="${jdbc.driver}" />
<property name="jdbcUrl" value="${jdbc.url}" />
<property name="user" value="${jdbc.user}" />
<property name="password" value="${jdbc.password}" />
</bean>
<!-- 在容器中声明jdbc模版,这里需要注入数据源 -->
<bean id="jdbcTemplate"
class="org.springframework.jdbc.core.JdbcTemplate">
<property name="dataSource" ref="dataSource"></property>
</bean>
<!-- 此处声明Dao层类,用注解的方式将jdbcTemplate注入到了accountDao中,也可用其他方式 -->
<bean id="accountDao" class="com.hao.tx.dao.impl.AccountDaoImpl"></bean>
<!-- 此处声明业务层类,用setter的方式注入了accountDao 和 管理事务的模版 -->
<bean id="accountService"
class="com.hao.tx.service.impl.AccountServiceImpl_DeclaAspecJAnno">
<property name="accountDao" ref="accountDao"></property>
</bean>
<!-- (一)、注册事务管理器: -->
<!-- 配置事务管理器 这里DataSourceXXX...可以用做Spring自己的或者MyBatis的事务管理器 -->
<bean id="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<!-- 需要注入连接池,通过连接池获得连接 -->
<property name="dataSource" ref="dataSource" />
</bean>
<!-- (二)、开启注解的事务管理 -->
<tx:annotation-driven transaction-manager="transactionManager"/>
</beans>
3. 测试
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("classpath:applicationContext4.xml")
public class TxAcTest004 {
@Autowired
@Qualifier("accountService") // 注入Service对象,不需要注入代理对象(生成这个类的时候,已经是代理对象.)
private IAccountService accountService;
@Test
public void test01() {
System.out.println("转账之前....");
Account a = accountService.findAccountByName("txa");
if (a != null) {
System.out.println(a);
}
Account b = accountService.findAccountByName("txb");
if (b != null) {
System.out.println(b);
}
try {// 这里捕获转账时出现的异常
System.out.println("开始转账.....");
accountService.transfer(a, b, 100); //会出现异常
} catch (ArithmeticException e) {
e.printStackTrace();
} finally {
System.out.println("转账之后....");
Account a_trans = accountService.findAccountByName("txa");
if (a != null) {
System.out.println(a_trans);
}
Account b_trans = accountService.findAccountByName("txb");
if (b != null) {
System.out.println(b_trans);
}
}
}
}