2）transaction-manager： 例 2.2.2 注意配置文件头加了两条：spring-tx-3.0.xsd和xmlns:tx <?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:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd" > <context:component-scan base-package="com" /> <context:component-scan base-package="service" /> <bean id="viewResolver" class="org.springframework.web.servlet.view.UrlBasedViewResolver"> <property name="viewClass" value="org.springframework.web.servlet.view.JstlView" /> <property name="prefix" value="/" /> <property name="suffix" value=".jsp" /> </bean> <bean id="NiutDAO" class="com.NiutDAO"> </bean> <bean id="loginService" class="service.LoginServiceImpl" > <property name="niutDAO"> <ref bean="NiutDAO" /> </property> </bean> <tx:advice id="txAdvice" transaction-manager="transactionManager"> <tx:attributes> <tx:method name="login*" propagation="REQUIRED" /> </tx:attributes> </tx:advice> <!-- 配置切面 这种写法也正确"execution(* service.*.*(..))"--> <aop:config> <aop:pointcut id="myPointcut" expression="execution(* service.LoginServiceImpl.*(..))" /> <aop:advisor advice-ref="txAdvice" pointcut-ref="myPointcut"/> </aop:config> <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" > <property name="driverClassName" value="com.mysql.jdbc.Driver"></property> <property name="url" value="jdbc:mysql://localhost:3306/test"></property> <property name="username" value="root"></property> <property name="password" value="1234"></property> </bean> <bean id="jt" class="org.springframework.jdbc.core.JdbcTemplate"> <constructor-arg ref="dataSource" /> </bean> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource" /> </bean> </beans> package service; import java.sql.Types; import javax.annotation.Resource; import org.springframework.jdbc.core.JdbcTemplate; import com.NiutDAO; import service.interfac.ILoginService; public class LoginServiceImpl implements ILoginService { @Resource private JdbcTemplate jt; NiutDAO niutDAO; public void setNiutDAO(NiutDAO niutDAO) { this.niutDAO = niutDAO; } public void login() { updateRegister(15,1); System.out.println("successfully update 1"); updateRegisterWrong(19,2); System.out.println("successfully update 2"); } public void updateRegister(int age,int id) { String sql = "UPDATE register SET age=? WHERE id=?"; Object params[] = new Object[] { new Integer(age), new Integer(id) }; int type[] = new int[] { Types.INTEGER , Types.INTEGER }; jt.update(sql, params, type); } public void updateRegisterWrong(int age,int id) { String sql = "UPDATE register SET age=? WWWWWWW id=?"; Object params[] = new Object[] { new Integer(age), new Integer(id) }; int type[] = new int[] { Types.INTEGER , Types.INTEGER }; jt.update(sql, params, type); } } 即使updateRegister(15,1);成功执行，但数据库中结果并没有被更新，因为updateRegisterWrong(19,2);的错误致使updateRegister(15,1);的结果发生了回滚。 输出结果： successfully update 1 严重: Servlet.service() for servlet spring threw exception java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'WWWWWWW id=2' at line 1 at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2921) at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1570)
更多请见下节：http://www.mark-to-win.com/tutorial/frame_Spring_Springtransactionmanager.html
