[TOC] # 概念 事務傳播行為   # 準備 **sql** ~~~ CREATE TABLE `account` ( `id` int(11) NOT NULL AUTO_INCREMENT, `NAME` varchar(20) COLLATE utf8_unicode_ci DEFAULT NULL, `money` double DEFAULT NULL, PRIMARY KEY (`id`) ) ENGINE=InnoDB AUTO_INCREMENT=3 DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci; ~~~ **創建Dao** **AccountDao類** ~~~ package dao; public interface AccountDao { // 加錢 void increaseMoney(Integer id, Double money); // 減錢 void decreaseMoney(Integer id, Double money); } ~~~ **AccountDaoImpl類** ~~~ package dao; import org.springframework.jdbc.core.support.JdbcDaoSupport; public class AccountDaoImpl extends JdbcDaoSupport implements AccountDao { @Override public void increaseMoney(Integer id, Double money) { getJdbcTemplate().update("update account set money = money+? where id=?", money, id); } @Override public void decreaseMoney(Integer id, Double money) { getJdbcTemplate().update("update account set money = money-? where id=?", money, id); } } ~~~ **創建service** **AccountService類** ~~~ package service; public interface AccountService { // 轉賬方法 void transfer(Integer from, Integer to, Double money); } ~~~ **AccountServiceImpl類** ~~~ package service; import org.springframework.transaction.TransactionStatus; import org.springframework.transaction.support.TransactionCallbackWithoutResult; import org.springframework.transaction.support.TransactionTemplate; import dao.AccountDao; public class AccountServiceImpl implements AccountService { private AccountDao ad; @Override public void transfer(Integer from, Integer to, Double money) { // 減錢 ad.decreaseMoney(from, money); // 加錢 ad.increaseMoney(to, money); } public AccountDao getAd() { return ad; } public void setAd(AccountDao ad) { this.ad = ad; } } ~~~ **applicationContext.xml** ~~~ <?xml version="1.0" encoding="UTF-8"?> <beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.springframework.org/schema/beans" xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.2.xsd "> <!-- 指定spring讀取db.properties配置 --> <context:property-placeholder location="classpath:db.properties" /> <!-- 1.將連接池放入spring容器 --> <bean name="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" > <property name="jdbcUrl" value="${jdbc.jdbcUrl}" ></property> <property name="driverClass" value="${jdbc.driverClass}" ></property> <property name="user" value="${jdbc.user}" ></property> <property name="password" value="${jdbc.password}" ></property> </bean> <!-- 2.Dao --> <bean name="accountDao" class="dao.AccountDaoImpl" > <property name="dataSource" ref="dataSource" ></property> </bean> <!-- 3.Service --> <bean name="accountService" class="service.AccountServiceImpl" > <property name="ad" ref="accountDao" ></property> </bean> </beans> ~~~ **測試** ~~~ package service; import javax.annotation.Resource; import org.junit.Test; import org.junit.runner.RunWith; import org.springframework.test.context.ContextConfiguration; import org.springframework.test.context.junit4.SpringJUnit4ClassRunner; @RunWith(SpringJUnit4ClassRunner.class) @ContextConfiguration("classpath:applicationContext.xml") public class Demo { @Resource(name = "accountService") private AccountService as; @Test public void fun1() { as.transfer(1, 2, 100d); } } ~~~ # Transaction模板 配置文件 ~~~ <?xml version="1.0" encoding="UTF-8"?> <beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.springframework.org/schema/beans" xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.2.xsd "> <!-- 指定spring讀取db.properties配置 --> <context:property-placeholder location="classpath:db.properties" /> <!-- 事務核心管理器,封裝了所有事務操作. 依賴于連接池 --> <bean name="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager" > <property name="dataSource" ref="dataSource" ></property> </bean> <!-- 事務模板對象 --> <bean name="transactionTemplate" class="org.springframework.transaction.support.TransactionTemplate" > <property name="transactionManager" ref="transactionManager" ></property> </bean> <!-- 1.將連接池放入spring容器 --> <bean name="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" > <property name="jdbcUrl" value="${jdbc.jdbcUrl}" ></property> <property name="driverClass" value="${jdbc.driverClass}" ></property> <property name="user" value="${jdbc.user}" ></property> <property name="password" value="${jdbc.password}" ></property> </bean> <!-- 2.Dao --> <bean name="accountDao" class="dao.AccountDaoImpl" > <property name="dataSource" ref="dataSource" ></property> </bean> <!-- 3.Service --> <bean name="accountService" class="service.AccountServiceImpl" > <property name="ad" ref="accountDao" ></property> <property name="tt" ref="transactionTemplate"></property> </bean> </beans> ~~~ **AccountServiceImpl類** ~~~ package service; import org.springframework.transaction.TransactionStatus; import org.springframework.transaction.support.TransactionCallbackWithoutResult; import org.springframework.transaction.support.TransactionTemplate; import dao.AccountDao; public class AccountServiceImpl implements AccountService { private AccountDao ad; private TransactionTemplate tt; public TransactionTemplate getTt() { return tt; } public void setTt(TransactionTemplate tt) { this.tt = tt; } @Override public void transfer(final Integer from, final Integer to, final Double money) { tt.execute(new TransactionCallbackWithoutResult() { @Override protected void doInTransactionWithoutResult(TransactionStatus arg0) { // 減錢 ad.decreaseMoney(from, money); int i = 1 / 0; // 加錢 ad.increaseMoney(to, money); } }); } public AccountDao getAd() { return ad; } public void setAd(AccountDao ad) { this.ad = ad; } } ~~~ # xml配置aop事務 **導入新的約束(tx)**    **配置文件** ~~~ <?xml version="1.0" encoding="UTF-8"?> <beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.springframework.org/schema/beans" xmlns:p="http://www.springframework.org/schema/p" 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-4.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.2.xsd "> <!-- 指定spring讀取db.properties配置 --> <context:property-placeholder location="classpath:db.properties" /> <!-- 事務核心管理器,封裝了所有事務操作. 依賴于連接池 --> <bean name="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager" > <property name="dataSource" ref="dataSource" ></property> </bean> <!-- 事務模板對象 --> <bean name="transactionTemplate" class="org.springframework.transaction.support.TransactionTemplate" > <property name="transactionManager" ref="transactionManager" ></property> </bean> <!-- 配置事務通知 --> <tx:advice id="txAdvice" transaction-manager="transactionManager" > <tx:attributes> <!-- 以方法為單位,指定方法應用什么事務屬性 isolation:隔離級別 propagation:傳播行為 read-only:是否只讀 --> <tx:method name="save*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false" /> <tx:method name="persist*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false" /> <tx:method name="update*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false" /> <tx:method name="modify*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false" /> <tx:method name="delete*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false" /> <tx:method name="remove*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false" /> <tx:method name="get*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="true" /> <tx:method name="find*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="true" /> <tx:method name="transfer" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false" /> </tx:attributes> </tx:advice> <!-- 配置織入 --> <aop:config > <!-- 配置切點表達式 --> <aop:pointcut expression="execution(* service.*ServiceImpl.*(..))" id="txPc"/> <!-- 配置切面 : 通知+切點 advice-ref:通知的名稱 pointcut-ref:切點的名稱 --> <aop:advisor advice-ref="txAdvice" pointcut-ref="txPc" /> </aop:config> <!-- 1.將連接池放入spring容器 --> <bean name="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" > <property name="jdbcUrl" value="${jdbc.jdbcUrl}" ></property> <property name="driverClass" value="${jdbc.driverClass}" ></property> <property name="user" value="${jdbc.user}" ></property> <property name="password" value="${jdbc.password}" ></property> </bean> <!-- 2.Dao --> <bean name="accountDao" class="dao.AccountDaoImpl" > <property name="dataSource" ref="dataSource" ></property> </bean> <!-- 3.Service --> <bean name="accountService" class="service.AccountServiceImpl" > <property name="ad" ref="accountDao" ></property> <property name="tt" ref="transactionTemplate"></property> </bean> </beans> ~~~ # 注解配置aop事務 **配置文件** ~~~ <?xml version="1.0" encoding="UTF-8"?> <beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.springframework.org/schema/beans" xmlns:p="http://www.springframework.org/schema/p" 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-4.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.2.xsd "> <!-- 指定spring讀取db.properties配置 --> <context:property-placeholder location="classpath:db.properties" /> <!-- 事務核心管理器,封裝了所有事務操作. 依賴于連接池 --> <bean name="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager" > <property name="dataSource" ref="dataSource" ></property> </bean> <!-- 事務模板對象 --> <bean name="transactionTemplate" class="org.springframework.transaction.support.TransactionTemplate" > <property name="transactionManager" ref="transactionManager" ></property> </bean> <!-- 開啟使用注解管理aop事務 --> <tx:annotation-driven/> <!-- 1.將連接池放入spring容器 --> <bean name="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" > <property name="jdbcUrl" value="${jdbc.jdbcUrl}" ></property> <property name="driverClass" value="${jdbc.driverClass}" ></property> <property name="user" value="${jdbc.user}" ></property> <property name="password" value="${jdbc.password}" ></property> </bean> <!-- 2.Dao --> <bean name="accountDao" class="dao.AccountDaoImpl" > <property name="dataSource" ref="dataSource" ></property> </bean> <!-- 3.Service --> <bean name="accountService" class="service.AccountServiceImpl" > <property name="ad" ref="accountDao" ></property> <property name="tt" ref="transactionTemplate"></property> </bean> </beans> ~~~ 然后類中寫 ~~~ @Override @Transactional(isolation = Isolation.REPEATABLE_READ, propagation = Propagation.REQUIRED, readOnly = false) public void transfer(final Integer from, final Integer to, final Double money) { // 減錢 ad.decreaseMoney(from, money); int i = 1 / 0; // 加錢 ad.increaseMoney(to, money); } ~~~ 也可以這樣 ~~~ @Transactional(isolation=Isolation.REPEATABLE_READ,propagation=Propagation.REQUIRED,readOnly=true) public class AccountServiceImpl implements AccountService { ~~~ 如果在類上加,里面方法有不同的,可以在方法上再加上注解