Java程序设置脏读

1. 纯的JDBC写法，通过Connection设置为脏读
   

     conn.setTransactionIsolation(Connection.TRANSACTION_READ_UNCOMMITTED);
     conn.setReadOnly(true);//如果不操作数据库，可设置只读

2.支持Transactional注解的框架，直接在方法上加注解即可

@Transactional(isolation = Isolation.READ_UNCOMMITTED,readOnly=true) 

3.Spring中配置

 <bean id="basicTxProxy" abstract="true" 
    	class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">
        <property name="transactionManager" ref="transactionManager"/>
        <!-- force to use cglib -->
        <property name="proxyTargetClass" value="true"/>
        <property name="transactionAttributes">
            <props>
                <prop key="add*">PROPAGATION_REQUIRED</prop>
                <prop key="modify*">PROPAGATION_REQUIRED</prop>
                <prop key="remove*">PROPAGATION_REQUIRED</prop>
                <prop key="get*">PROPAGATION_REQUIRED,ISOLATION_READ_UNCOMMITTED,readOnly</prop>
                <prop key="query*">PROPAGATION_REQUIRED,ISOLATION_READ_UNCOMMITTED,readOnly</prop>
                <prop key="load*">PROPAGATION_REQUIRED,ISOLATION_READ_UNCOMMITTED,readOnly</prop>
                <prop key="find*">PROPAGATION_REQUIRED,ISOLATION_READ_UNCOMMITTED,readOnly</prop>

                <!-- 将需要设置脏读的方法名，配置到key (此处假设方法名称为queryTestReadKey)-->

                 <prop key="queryTestReadKey">

                        PROPAGATION_REQUIRED,ISOLATION_READ_UNCOMMITTED,readOnly

                </prop>

                <prop key="*">PROPAGATION_REQUIRED</prop>
            </props>
        </property>
    </bean>

4.hibernate中session方法

Sesssion session = this.getSessionFactory().getCurrentSession();
//sesion.connection().setTransactionIsolation(Connection.TRANSACTION_READ_UNCOMMITTED);//已过期 
SessionFactoryUtils.getDataSource(getSessionFactory()).getConnection().setTransactionIsolation(Connection.TRANSACTION_READ_UNCOMMITTED);