声明式事务管理

步骤:

         1) 引入spring-aop相关的4个jar文件

         2) 引入aop名称空间  【XML配置方式需要引入】

         3) 引入tx名称空间    【事务方式必须引入】


package loaderman.a_tx;


/**
 * Service
 */
public class DeptService {

    // 容器注入dao对象
    private DeptDao deptDao;

    public void setDeptDao(DeptDao deptDao) {
        this.deptDao = deptDao;
    }

    /*
     * 事务控制?
     */
    public void save(Dept dept) {
        // 第一次调用
//        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);
    }
}
package loaderman.a_tx;

import org.springframework.jdbc.core.JdbcTemplate;

/**
 * dao实现,使用Spring对jdbc支持功能
 *
 */
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());
    }
}
package loaderman.a_tx;

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;
    }
    
}
package loaderman.a_tx;

import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class App {

    @Test
    public void testApp() throws Exception {
        //容器对象
        ApplicationContext ac = new ClassPathXmlApplicationContext("loaderman/a_tx/bean.xml");

        // 模拟数据
        Dept dept = new Dept();
        dept.setDeptName("测试2: 开发部2");

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

    }
}
<?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="loaderman.a_tx.DeptDao">
        <property name="jdbcTemplate" ref="jdbcTemplate"></property>
    </bean>
 
    <!-- 4. service实例 -->
    <bean id="deptService" class="loaderman.a_tx.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(* loaderman.a_tx.DeptService.save(..))" id="pt"/>
        <aop:advisor advice-ref="txAdvice" pointcut-ref="pt"/>
    </aop:config>
    
</beans>      
原文地址:https://www.cnblogs.com/loaderman/p/10042953.html