XML方式实现Spring声明式事务管理

本文内容纲要:XML方式实现Spring声明式事务管理

1、首先编写一个实体类

public class Dept {

private int deptId;

private String deptName;

public int getDeptId() {

return deptId;

}

public void setDeptId(int deptId) {

this.deptId = deptId;

}

public String getDeptName() {

return deptName;

}

public void setDeptName(String deptName) {

this.deptName = deptName;

}

}

2、编写Dao层

public class DeptDao {

// 容器注入JdbcTemplate对象

private JdbcTemplate jdbcTemplate;

public void setJdbcTemplate(JdbcTemplate jdbcTemplate) {

this.jdbcTemplate = jdbcTemplate;

}

public void save(Dept dept){

String sql = "insert into t_dept (deptName) values(?)";

jdbcTemplate.update(sql,dept.getDeptName());

}

}

3、编写Server层

public class DeptService {

// 容器注入dao对象

private DeptDao deptDao;

public void setDeptDao(DeptDao deptDao) {

this.deptDao = deptDao;

}

public void save(Dept dept){

deptDao.save(dept);

int i = 1/0; // 异常: 整个Service.save()执行成功的要回滚

// 第二次调用

deptDao.save(dept);

}

}

4、配置bean.xml文件

  4.1加入tx声明

xmlns:tx="http://www.springframework.org/schema/tx"

  4.2加入tx约束

http://www.springframework.org/schema/tx

http://www.springframework.org/schema/tx/spring-tx.xsd

  4.3编写C3P0连接池

<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">

<property name="driverClass" value="com.mysql.jdbc.Driver"></property>

<property name="jdbcUrl" value="jdbc:mysql:///hib_demo"></property>

<property name="user" value="root"></property>

<property name="password" value="root"></property>

<property name="initialPoolSize" value="3"></property>

<property name="maxPoolSize" value="10"></property>

<property name="maxStatements" value="100"></property>

<property name="acquireIncrement" value="2"></property>

</bean>

  4.4编写JdbcTemplate工具类实例

<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">

<property name="dataSource" ref="dataSource"></property>

</bean>

  4.5编写dao实例和service实例

<bean id="deptDao" class="包名.DeptDao">

<property name="jdbcTemplate" ref="jdbcTemplate"></property>

</bean>

<bean id="deptService" class="包名.DeptService">

<property name="deptDao" ref="deptDao"></property>

</bean>

  4.6Spring声明式事务管理配置

<!-- 配置事务管理器类 -->

<bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">

<property name="dataSource" ref="dataSource"></property>

</bean>

<!-- 配置事务增强(如果管理事务?) -->

<tx:advice id="txAdvice" transaction-manager="txManager">

<tx:attributes>

<tx:method name="*" read-only="false"/>

</tx:attributes>

</tx:advice>

<!-- Aop配置: 拦截哪些方法(切入点表表达式) + 应用上面的事务增强配置 -->

<aop:config>

<aop:pointcut expression="execution(* cn.itcast.a_tx.DeptService.save(..))" id="pt"/>

<aop:advisor advice-ref="txAdvice" pointcut-ref="pt"/>

</aop:config>

  4.7完整的bean.xml配置

<?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: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.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">

<!-- 1. 数据源对象: C3P0连接池 -->

<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">

<property name="driverClass" value="com.mysql.jdbc.Driver"></property>

<property name="jdbcUrl" value="jdbc:mysql:///hib_demo"></property>

<property name="user" value="root"></property>

<property name="password" value="root"></property>

<property name="initialPoolSize" value="3"></property>

<property name="maxPoolSize" value="10"></property>

<property name="maxStatements" value="100"></property>

<property name="acquireIncrement" value="2"></property>

</bean>

<!-- 2. JdbcTemplate工具类实例 -->

<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">

<property name="dataSource" ref="dataSource"></property>

</bean>

<!-- 3. dao实例 -->

<bean id="deptDao" class="包名.DeptDao">

<property name="jdbcTemplate" ref="jdbcTemplate"></property>

</bean>

<!-- 4. service实例 -->

<bean id="deptService" class="包名.DeptService">

<property name="deptDao" ref="deptDao"></property>

</bean>

<!-- #############5. Spring声明式事务管理配置############### -->

<!-- 5.1 配置事务管理器类 -->

<bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">

<property name="dataSource" ref="dataSource"></property>

</bean>

<!-- 5.2 配置事务增强(如果管理事务?) -->

<tx:advice id="txAdvice" transaction-manager="txManager">

<tx:attributes>

<tx:method name="*" read-only="false"/>

</tx:attributes>

</tx:advice>

<!-- 5.3 Aop配置: 拦截哪些方法(切入点表表达式) + 应用上面的事务增强配置 -->

<aop:config>

<aop:pointcut expression="execution(* cn.itcast.a_tx.DeptService.save(..))" id="pt"/>

<aop:advisor advice-ref="txAdvice" pointcut-ref="pt"/>

</aop:config>

</beans>

5.测试类

public class App {

public void testApp() throws Exception {

//容器对象

ApplicationContext ac = new ClassPathXmlApplicationContext("包名/bean.xml");

// 模拟数据

Dept dept = new Dept();

dept.setDeptName("测试: 开发部");

DeptService deptService = (DeptService) ac.getBean("deptService");

deptService.save(dept);

}

}

本文内容总结:XML方式实现Spring声明式事务管理

原文链接:https://www.cnblogs.com/imzhuo/p/5888798.html

以上是 XML方式实现Spring声明式事务管理 的全部内容, 来源链接: utcz.com/z/362751.html

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