一把再SpringBoot中拿aop做全局事务时候代码大致都是如下：

@SpringBootConfiguration
@EnableTransactionManagement
@EnableAspectJAutoProxy
@MapperScan("xxx.server.dao.mapper")
public class JdbcConfig {private static final String AOP_POINTCUT_EXPRESSION = "execution (* xxx.server.service.impl.*.*(..))";@Beanpublic DataSourceTransactionManager dataSourceTransactionManager(DataSource dataSource) {return new DataSourceTransactionManager(dataSource);}@Bean("datasourceTxAdvice")public TransactionInterceptor txAdvice(DataSourceTransactionManager transactionManager) {DefaultTransactionAttribute txAttrRequired = new DefaultTransactionAttribute();txAttrRequired.setPropagationBehavior(TransactionDefinition.PROPAGATION_REQUIRED);DefaultTransactionAttribute txAttrRequiredReadonly = new DefaultTransactionAttribute();txAttrRequiredReadonly.setPropagationBehavior(TransactionDefinition.PROPAGATION_REQUIRED);txAttrRequiredReadonly.setReadOnly(true);NameMatchTransactionAttributeSource source = new NameMatchTransactionAttributeSource();source.addTransactionalMethod("save*", txAttrRequired);source.addTransactionalMethod("delete*", txAttrRequired);source.addTransactionalMethod("update*", txAttrRequired);// ...source.addTransactionalMethod("*", txAttrRequiredReadonly);final TransactionInterceptor transactionInterceptor = new TransactionInterceptor();transactionInterceptor.setTransactionManager(transactionManager);transactionInterceptor.setTransactionAttributeSource(source);return transactionInterceptor;}@Beanpublic Advisor adviceAdvisor(@Qualifier("datasourceTxAdvice") TransactionInterceptor transactionInterceptor) {AspectJExpressionPointcut pointcut = new AspectJExpressionPointcut();pointcut.setExpression(AOP_POINTCUT_EXPRESSION);return new DefaultPointcutAdvisor(pointcut, transactionInterceptor);}
}

这个配置的意思是只有service层的实现类中的方法会开启事务，且开启事务时候允许嵌套事务，save/delete/update开头的方法不是只读事务，剩下的方法都是只读事务。这里用的是默认的DefaultTransactionAttribute，这里边判断是不是要回滚的标志就是异常是不是RuntimeException或者Error。

具体代码如下：

public class DefaultTransactionAttribute extends DefaultTransactionDefinition implements TransactionAttribute {// 省略部分代码@Overridepublic boolean rollbackOn(Throwable ex) {return (ex instanceof RuntimeException || ex instanceof Error);}// 省略部分代码}

Spring中事务实现的核心代码再org.springframework.transaction.interceptor.TransactionAspectSupport#invokeWithinTransaction方法中。

这个TransactionAspectSupport类中方法最终会调用TransactionAttribute#rollbackOn方法来确定要不要回滚。

所以要想实现部分异常下的不回滚，实现关键也在这里。如下是我实现以后的代码：

// 自定义不回滚事务的异常类
public class NoRollbackException extends RuntimeException {public NoRollbackException() {super();}public NoRollbackException(String message) {super(message);}public NoRollbackException(String message, Throwable cause) {super(message, cause);}public NoRollbackException(Throwable cause) {super(cause);}
}@SpringBootConfiguration
@EnableTransactionManagement
@EnableAspectJAutoProxy
@MapperScan("xxx.server.dao.mapper")
public class JdbcConfig {private static final String AOP_POINTCUT_EXPRESSION = "execution (* xxx.server.service.impl.*.*(..))";@Beanpublic DataSourceTransactionManager dataSourceTransactionManager(DataSource dataSource) {return new DataSourceTransactionManager(dataSource);}@Bean("datasourceTxAdvice")public TransactionInterceptor txAdvice(DataSourceTransactionManager transactionManager) {DefaultTransactionAttribute txAttrRequired = new CustomRuleBasedTransactionAttribute();txAttrRequired.setPropagationBehavior(TransactionDefinition.PROPAGATION_REQUIRED);DefaultTransactionAttribute txAttrRequiredReadonly = new CustomRuleBasedTransactionAttribute();txAttrRequiredReadonly.setPropagationBehavior(TransactionDefinition.PROPAGATION_REQUIRED);txAttrRequiredReadonly.setReadOnly(true);NameMatchTransactionAttributeSource source = new NameMatchTransactionAttributeSource();source.addTransactionalMethod("save*", txAttrRequired);source.addTransactionalMethod("delete*", txAttrRequired);source.addTransactionalMethod("update*", txAttrRequired);// ...source.addTransactionalMethod("*", txAttrRequiredReadonly);final TransactionInterceptor transactionInterceptor = new TransactionInterceptor();transactionInterceptor.setTransactionManager(transactionManager);transactionInterceptor.setTransactionAttributeSource(source);return transactionInterceptor;}@Beanpublic Advisor adviceAdvisor(@Qualifier("datasourceTxAdvice") TransactionInterceptor transactionInterceptor) {AspectJExpressionPointcut pointcut = new AspectJExpressionPointcut();pointcut.setExpression(AOP_POINTCUT_EXPRESSION);return new DefaultPointcutAdvisor(pointcut, transactionInterceptor);}private static class CustomRuleBasedTransactionAttribute extends DefaultTransactionAttribute {@Overridepublic boolean rollbackOn(Throwable ex) {return !(ex instanceof NoRollbackException) && super.rollbackOn(ex);}}
}

如上述代码自定义CustomRuleBasedTransactionAttribute类继承DefaultTransactionAttribute类，然后重写rollbackOn方法，其中异常是自定义的NoRollbackException的话就不需要回滚了，否则还是走以前的逻辑。然后在创建DefaultTransactionAttribute对象的地方创建CustomRuleBasedTransactionAttribute对象即可实现。