一、引入依賴
pom.xml代碼:
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.william</groupId>
<artifactId>spring_day04_01_tx_aop_xml</artifactId>
<version>1.0-SNAPSHOT</version>
<properties>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
</properties>
<dependencies>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.47</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>5.0.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>5.0.2.RELEASE</version>
</dependency>
<dependency>
<groupId>com.mchange</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.5.2</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
</dependency>
<dependency>
<groupId>commons-dbutils</groupId>
<artifactId>commons-dbutils</artifactId>
<version>1.4</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.8.9</version>
</dependency>
</dependencies>
</project>
二、目錄結構
三、applicationContext.xml配置檔案
<?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: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.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">
<!--開啟注解掃描-->
<context:component-scan base-package="com.william"></context:component-scan>
<!--建立QueryRunner-->
<bean id="QueryRunner" class="org.apache.commons.dbutils.QueryRunner">
</bean>
<!--建立dataSource-->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="${jdbc.driverClass}"></property>
<property name="jdbcUrl" value="${jdbc.jdbcUrl}"></property>
<property name="user" value="${jdbc.user}"></property>
<property name="password" value="${jdbc.password}"></property>
</bean>
<!--引入屬性檔案-->
<context:property-placeholder location="classpath:db.properties"></context:property-placeholder>
<!--使用aop解決事務問題-->
<!--配置切面:切入點,增強-->
<!--增強:事務管理-->
<bean id="transactionManager" class="com.william.utils.TransactionManager"></bean>
<!--aop配置-->
<aop:config>
<!--配置切面: ref 關聯增強對象-->
<aop:aspect ref="transactionManager">
<!--配置切入點-->
<aop:pointcut id="pc" expression="execution(* com.william.service.Impl.*.*(..))"></aop:pointcut>
<!--織入-->
<aop:before method="beganTransaction" pointcut-ref="pc"></aop:before>
<aop:after-returning method="Commit" pointcut-ref="pc"></aop:after-returning>
<aop:after-throwing method="rollBack" pointcut-ref="pc"></aop:after-throwing>
<aop:after method="release" pointcut-ref="pc"></aop:after>
</aop:aspect>
</aop:config>
</beans>
四、Class檔案
1.AccountDaoImpl
代碼:
package com.william.Dao.Impl;
import com.william.Dao.AccountDao;
import com.william.domain.Account;
import com.william.utils.ConnectionUtils;
import org.apache.commons.dbutils.QueryRunner;
import org.apache.commons.dbutils.handlers.BeanHandler;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;
import java.sql.SQLException;
import java.util.List;
/**
* @author :lijunxuan
* @date :Created in 2019/5/27 16:00
* @description :
* @version: 1.0
*/
@Repository
public class AccountDaoImpl implements AccountDao {
@Autowired
ConnectionUtils connectionUtils;
@Autowired
QueryRunner queryRunner;
@Override
public Account findByUserName(String username ) {
String sql="select * from account where name = ?";
try {
return queryRunner.query(connectionUtils.getThreadConnection(),sql,new BeanHandler<>(Account.class),username);
} catch (SQLException e) {
e.printStackTrace();
}
return null;
}
@Override
public void Update(Account account) {
String sql =" update account set money = ? where id =?";
Object [] params= {account.getMoney(),account.getId()};
try {
queryRunner.update(connectionUtils.getThreadConnection(),sql,params);
} catch (SQLException e) {
e.printStackTrace();
}
}
}
2.AccountServiceImpl
package com.william.service.Impl;
import com.william.Dao.AccountDao;
import com.william.domain.Account;
import com.william.service.AccountService;
import com.william.utils.TransactionManager;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
/**
* @author :lijunxuan
* @date :Created in 2019/5/27 16:14
* @description :
* @version: 1.0
*/
@Service
public class AccountServiceImpl implements AccountService {
@Autowired
AccountDao accountDao;
@Override
public void transfer(String FromMoney, String ToMoney, Float money) {
//開啟事務:transactionManager
//查詢賬戶名稱 兩個賬戶名稱
Account FromuserName = accountDao.findByUserName(FromMoney);
Account ToUserName = accountDao.findByUserName(ToMoney);
//修改金額
FromuserName.setMoney(FromuserName.getMoney()-money);
ToUserName.setMoney(ToUserName.getMoney()+money);
//int i=1/0;
//修改賬戶表
accountDao.Update(FromuserName);
accountDao.Update(ToUserName);
}
}
3.Utils工具類
(1)ConnectionUtils
package com.william.utils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import javax.sql.DataSource;
import java.sql.Connection;
import java.sql.SQLException;
/**
* @author :lijunxuan
* @date :Created in 2019/5/27 16:50
* @description :
* @version: 1.0
*/
@Component
public class ConnectionUtils {
private ThreadLocal<Connection> t1=new ThreadLocal();
@Autowired
DataSource dataSource;
/**
* 用來擷取線程中連接配接對象
* 1, 在第一次通路該方法時, 線程中沒有對象,先擷取一個,放入線程
*/
public Connection getThreadConnection(){
//擷取線程池中的對象
Connection conn = t1.get();
if (conn==null){
try {
conn = dataSource.getConnection();
t1.set(conn);
} catch (SQLException e) {
e.printStackTrace();
}
}
return conn;
}
/**
* 移除線程
*/
public void remove()
{
t1.remove();
}
}
(2)TransactionManager
package com.william.utils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import java.sql.SQLException;
/**
* @author :lijunxuan
* @date :Created in 2019/5/27 16:50
* @description :
* @version: 1.0
*/
@Component
public class TransactionManager {
@Autowired
ConnectionUtils connectionUtils;
//開啟事務
public void beganTransaction(){
try {
connectionUtils.getThreadConnection().setAutoCommit(false);
} catch (SQLException e) {
e.printStackTrace();
}
}
//送出事務
public void Commit(){
try {
connectionUtils.getThreadConnection().commit();
} catch (SQLException e) {
e.printStackTrace();
}
}
//復原
public void rollBack(){
try {
connectionUtils.getThreadConnection().rollback();
} catch (SQLException e) {
e.printStackTrace();
}
}
//釋放資源
public void release(){
try {
connectionUtils.getThreadConnection().setAutoCommit(true);
connectionUtils.getThreadConnection().close();
connectionUtils.remove();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
4.TestTrasfer測試類
package com.william;
import com.william.service.AccountService;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Repository;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
/**
* @author :lijunxuan
* @date :Created in 2019/5/27 16:22
* @description :
* @version: 1.0
*/
@Component
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("classpath:applicationContext.xml")
public class TestTrasfer {
@Autowired
AccountService accountService;
@Test
public void testTrasferMoney(){
accountService.transfer("william","william-Li",500f);
}
}