spring 事務(wù)使用

• 1. 業(yè)務(wù)代碼
• 2. xml配置
• 3. 注解配置

1. 業(yè)務(wù)代碼

• 數(shù)據(jù)表結(jié)構(gòu)
  
• dao

package com.lovely.dao.impl;import com.lovely.dao.AccountDao; import org.springframework.jdbc.core.JdbcTemplate;/*** @author echo lovely* @date 2020/8/9 11:01*/ public class AccountDaoImpl implements AccountDao {private JdbcTemplate jdbcTemplate;// 提供set方法 用于依賴注入public void setJdbcTemplate(JdbcTemplate jdbcTemplate) {this.jdbcTemplate = jdbcTemplate;}// 出賬public void out(String outMan, Double money) {String sql = "update account set money = money - ? where name = ?";jdbcTemplate.update(sql, new Object[]{money, outMan});}// 進(jìn)賬public void in(String inMan, Double money) {String sql = "update account set money = money + ? where name = ?";jdbcTemplate.update(sql, new Object[]{money, inMan});} }

• service

package com.lovely.service.impl;import com.lovely.dao.AccountDao; import com.lovely.service.AccountService;/*** @author echo lovely* @date 2020/8/9 11:08*/ public class AccountServiceImpl implements AccountService {private AccountDao accountDao;public void setAccountDao(AccountDao accountDao) {this.accountDao = accountDao;}/*** 轉(zhuǎn)賬業(yè)務(wù)具體實(shí)現(xiàn) 需要使用事務(wù)* @param outMan 轉(zhuǎn)出人* @param inMan 收賬人* @param money money*/public void transfer(String outMan, String inMan, Double money) {accountDao.in(inMan, money);System.out.println(1/0);accountDao.out(outMan, money);} }

• controller

package com.lovely.controller;import com.lovely.service.AccountService; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext;/*** @author echo lovely* @date 2020/8/9 11:12*/ public class AccountController {public static void main(String[] args) {ApplicationContext app = new ClassPathXmlApplicationContext("applicationContext.xml");AccountService accountService = app.getBean(AccountService.class);// 轉(zhuǎn)賬測試accountService.transfer("jack", "rose", 1000.0);} }

• 上面的bean的創(chuàng)建方式set注入，沒搞注解

2. xml配置

• 核心 事務(wù)管理器 對(duì)轉(zhuǎn)賬方法動(dòng)態(tài)進(jìn)行事務(wù)控制

<!-- 數(shù)據(jù)源事務(wù)管理器 --><bean id="tranManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"><property name="dataSource" ref="dataSource" /></bean><!-- 事務(wù)通知 增強(qiáng)方法 --><tx:advice id="txAdvice" transaction-manager="tranManager"><!--事務(wù)屬性信息的配置--><tx:attributes><tx:method name="*"/><!--<tx:method name="transfer*" isolation="DEFAULT" read-only="false"/>--></tx:attributes></tx:advice><!-- 配置事務(wù)的織入 --><aop:config><!--<aop:pointcut id="myPointcut" expression="execution(* com.lovely.service.impl.*.*(..))"/><aop:advisor advice-ref="txAdvice" pointcut-ref="myPointcut"/>--><aop:advisor advice-ref="txAdvice" pointcut="execution(* com.lovely.service.impl.*.*(..))"/></aop:config>

3. 注解配置

注解配置

<!-- 數(shù)據(jù)源事務(wù)管理器 --><bean id="tranManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"><property name="dataSource" ref="dataSource" /></bean><!-- 開啟事務(wù)的注解驅(qū)動(dòng) --><tx:annotation-driven transaction-manager="tranManager"></tx:annotation-driven>

事務(wù)注解

package com.lovely.service.impl;import com.lovely.dao.AccountDao; import com.lovely.service.AccountService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import org.springframework.transaction.annotation.Transactional;/*** @author echo lovely* @date 2020/8/9 11:08*/@Service("accountServiceImpl") public class AccountServiceImpl implements AccountService {@Autowiredprivate AccountDao accountDao;/*** 轉(zhuǎn)賬業(yè)務(wù)具體實(shí)現(xiàn) 需要使用事務(wù)* @param outMan 轉(zhuǎn)出人* @param inMan 收賬人* @param money money*/@Transactional(timeout = 1)public void transfer(String outMan, String inMan, Double money) {accountDao.in(inMan, money);System.out.println(1/0);accountDao.out(outMan, money);} }

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