<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:aop="http://www.springframework.org/schema/aop"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/aop
        http://www.springframework.org/schema/aop/spring-aop.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd">
 
    <!-- 配置數(shù)據(jù)庫(kù)操作對(duì)象 -->
    <bean id="dbAssit" class="com.itheima.dbassit.DBAssit">
        <property name="dataSource" ref="dataSource"></property>
        
        <!-- 指定 connection 和線程綁定 -->
        <property name="useCurrentConnection" value="true"></property>
    </bean>
 
    <!-- 配置數(shù)據(jù)源 -->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="com.mysql.jdbc.Driver"></property>
        <property name="jdbcUrl" value="jdbc:mysql:///spring_day02"></property>
        <property name="user" value="root"></property>
        <property name="password" value="1234"></property>
    </bean>
</beans>

@Service("accountService")
public class AccountServiceImpl implements IAccountService {
 
    @Autowired
    private IAccountDao accountDao;
}

@Repository("accountDao")
public class AccountDaoImpl implements IAccountDao {
    @Autowired
    private DBAssit dbAssit ;
}

<!-- 告知 spring，在創(chuàng)建容器時(shí)要掃描的包 -->
<context:component-scan base-package="com.itheima"></context:component-scan>

@Component("txManager")
public class TransactionManager {
 
    //定義一個(gè) DBAssit
    @Autowired
    private DBAssit dbAssit ;
}

@Component("txManager")
@Aspect//表明當(dāng)前類是一個(gè)切面類
public class TransactionManager {
 
    //定義一個(gè) DBAssit
    @Autowired
    private DBAssit dbAssit ;
}

//開(kāi)啟事務(wù)
@Before("execution(* com.itheima.service.impl.*.*(..))")
public void beginTransaction() {
 
    try {
        dbAssit.getCurrentConnection().setAutoCommit(false);
    } catch (SQLException e) {
        e.printStackTrace();
    }
}

//提交事務(wù)
@AfterReturning("execution(* com.itheima.service.impl.*.*(..))")
public void commit() {
 
    try {
        dbAssit.getCurrentConnection().commit();
    } catch (SQLException e) {
        e.printStackTrace();
    }
}

//回滾事務(wù)
@AfterThrowing("execution(* com.itheima.service.impl.*.*(..))")
public void rollback() {
 
    try {
        dbAssit.getCurrentConnection().rollback();
    } catch (SQLException e) {
        e.printStackTrace();
    }
}

//釋放資源
@After("execution(* com.itheima.service.impl.*.*(..))")
public void release() {
 
    try {
        dbAssit.releaseConnection();
    } catch (Exception e) {
        e.printStackTrace();
    }
}

<!-- 開(kāi)啟 spring 對(duì)注解 AOP 的支持 -->
<aop:aspectj-autoproxy/>

/**
* 環(huán)繞通知
* @param pjp
* @return
*/
@Around("execution(* com.itheima.service.impl.*.*(..))")
public Object transactionAround(ProceedingJoinPoint pjp) {
 
    //定義返回值
    Object rtValue = null;
 
    try {
    
        //獲取方法執(zhí)行所需的參數(shù)
        Object[] args = pjp.getArgs();
    
        //前置通知：開(kāi)啟事務(wù)
        beginTransaction();
 
        //執(zhí)行方法
        rtValue = pjp.proceed(args);
 
        //后置通知：提交事務(wù)
        commit();
        }catch(Throwable e) {
 
        //異常通知：回滾事務(wù)
        rollback();
        e.printStackTrace();
    }finally {
 
    //最終通知：釋放資源
    release();
    }
 
    return rtValue;
}

@Pointcut("execution(* com.itheima.service.impl.*.*(..))")
private void pt1() {}
 
    /**
    * 引用方式：
    * 環(huán)繞通知
    * @param pjp
    * @return
    */
    @Around("pt1()")//注意：千萬(wàn)別忘了寫括號(hào)
    public Object transactionAround(ProceedingJoinPoint pjp) {
 
    //定義返回值
    Object rtValue = null;
 
    try {
        //獲取方法執(zhí)行所需的參數(shù)
        Object[] args = pjp.getArgs();
 
        //前置通知：開(kāi)啟事務(wù)
        beginTransaction();
        
        //執(zhí)行方法
        rtValue = pjp.proceed(args);
 
        //后置通知：提交事務(wù)
        commit();
    }catch(Throwable e) {
 
        //異常通知：回滾事務(wù)
        rollback();
        e.printStackTrace();
    }finally {
 
        //最終通知：釋放資源
        release();
    }
    
    return rtValue;
}

@Configuration
@ComponentScan(basePackages="com.itheima")
@EnableAspectJAutoProxy
public class SpringConfiguration {
 
}