Spring 事务搭建转账环境以及事务管理手动编写事务管理

红太狼 2022-03-17 08:58 202阅读 0赞

1.  创建业务层Dao接口和实现
    
        package tx;
        
        public interface AccountDao {
        
            public void outMoney(String from,Double money);
            public void inMoney(String to,Double money);
        
        }
    
        package tx;
        
        public interface AccountService {
            public void  transfer(
                    String from,String to,Double money
            );
        }
    
        package tx;
        
        import org.springframework.transaction.TransactionStatus;
        import org.springframework.transaction.support.TransactionCallbackWithoutResult;
        import org.springframework.transaction.support.TransactionTemplate;
        
        public class AccountServiceImplement implements AccountService{
            private AccountDao accountDao;
        
            public void setAccountDao(AccountDao accountDao) {
                this.accountDao = accountDao;
            }
        
            private TransactionTemplate transactionTemplate;
        
            public void setTransactionTemplate(TransactionTemplate transactionTemplate) {
                this.transactionTemplate = transactionTemplate;
            }
        
            @Override
            public void transfer( final String from,final String to,final Double money) {
        
                transactionTemplate.execute(new TransactionCallbackWithoutResult() {
                    @Override
                    protected void doInTransactionWithoutResult(TransactionStatus transactionStatus) {
        
                        accountDao.outMoney(from,money);
                        int d =1/0;
                        accountDao.inMoney(to,money);
                    }
                });
        
        
        
            }
        }
    
    配置业务层：
    
        <bean id="accountService" class="tx.AccountServiceImplement">
                <property name="accountDao" ref="accountDao"/>
                
        
                <property name="transactionTemplate" ref="transactionTemplate"/>
            </bean>
            
            <bean id="accountDao" class="tx.AccountDaoImplement">
                <property name="dataSource" ref="dataSource"/>
            </bean>
        
            <context:property-placeholder location="classpath:jdbc.properties"></context:property-placeholder>
            
            <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
                <property name="driverClass" value="${driverClass}"/>
                <property name="jdbcUrl" value="${jdbcUrl}"/>
                <property name="user" value="${user}"/>
                <property name="password" value="${password}"/>
            </bean>
        
            
            
            <bean id="transactionMsnger" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
                <property name="dataSource" ref="dataSource"/>
            </bean>
        
            <bean id="transactionTemplate" class="org.springframework.transaction.support.TransactionTemplate">
                <constructor-arg>
                    <ref bean="transactionMsnger"/>
                </constructor-arg>
            </bean>
    
    测试类：
    
        package tx;
        
        import org.junit.Test;
        import org.junit.runner.RunWith;
        import org.springframework.test.context.ContextConfiguration;
        import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
        
        import javax.annotation.Resource;
        
        @RunWith(SpringJUnit4ClassRunner.class)
        @ContextConfiguration("classpath:tx.xml")
        public class SpringTest1 {
            @Resource(name = "accountService")
            private AccountService accountService;
            @Test
            public void test1(){
                accountService.transfer("王4一","王3一",1000d);
            }
        }