SpringBoot配置事务管理

注解方式配置事务管理

在@configuration的类中配置以下

	@Bean("txManager")
    public DataSourceTransactionManager txManager(DataSource dataSource) {
        return new DataSourceTransactionManager(dataSource);
    }

    /*事务拦截器*/
    @Bean("txAdvice")
    public 	TransactionInterceptor txAdvice(DataSourceTransactionManager txManager){

        NameMatchTransactionAttributeSource source = new NameMatchTransactionAttributeSource();
        /*只读事务，不做更新操作*/
        RuleBasedTransactionAttribute readOnlyTx = new RuleBasedTransactionAttribute();
        readOnlyTx.setReadOnly(true);
        readOnlyTx.setPropagationBehavior(TransactionDefinition.PROPAGATION_NOT_SUPPORTED );
        //当前存在事务就使用当前事务，当前不存在事务就创建一个新的事务
        //RuleBasedTransactionAttribute requiredTx = new RuleBasedTransactionAttribute();
        //requiredTx.setRollbackRules(
        //    Collections.singletonList(new RollbackRuleAttribute(Exception.class)));
        //requiredTx.setPropagationBehavior(TransactionDefinition.PROPAGATION_REQUIRED);
        RuleBasedTransactionAttribute requiredTx = new RuleBasedTransactionAttribute(TransactionDefinition.PROPAGATION_REQUIRED,
                Collections.singletonList(new RollbackRuleAttribute(Exception.class)));
        requiredTx.setTimeout(5);
        Map<String, TransactionAttribute> txMap = new HashMap<>();
        txMap.put("*", requiredTx);
        txMap.put("get*", readOnlyTx);
        txMap.put("find*", readOnlyTx);
        txMap.put("search*", readOnlyTx);
        source.setNameMap( txMap );
        return new TransactionInterceptor(txManager ,source) ;
    }

    /**切面拦截规则 参数会自动从容器中注入*/
    @Bean
    public DefaultPointcutAdvisor defaultPointcutAdvisor(TransactionInterceptor txAdvice){
        DefaultPointcutAdvisor pointcutAdvisor = new DefaultPointcutAdvisor();
        pointcutAdvisor.setAdvice(txAdvice);
        AspectJExpressionPointcut pointcut = new AspectJExpressionPointcut();
        pointcut.setExpression("execution (* com.yzh.oa.service.*.*(..))");
        pointcutAdvisor.setPointcut(pointcut);
        return pointcutAdvisor;
    }

注意: 切边表达式必须像上面那样，不能精确到具体包下，不然没有效果

在启动类中声明启用AOP

1. 在启动类上加入@EnableAspectJAutoProxy

在pom文件中添加AOP依赖

        
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-aspectsartifactId>
        dependency>

它会根据你所依赖的spring来下载具体包

结束了==。==！！