Springboot aop 实现全局配置事务

1.springboot实现事务只需要 在头上加上@Transactional注解
@Transactional 默认只捕获RuntimeException.class
对Exception异常得需要 @Transactional(rollbackFor = {Exception.class}) 捕获回滚。
2.当项目特别大的时候，对所有的service 都加上事务 ，显得非常麻烦。可以通过aop 方式实现全局异常。代码如下。
这样就能专注写业务逻辑然后注意一下方法名就行了，当然也可以用
source.addTransactionalMethod("*", txAttr_REQUIRED); 匹配所有方法，但是并不是所有的方法都需要事务的。所有推荐匹配方法名的方法

package com.example.demo.aop;

import org.aspectj.lang.annotation.Aspect;
import org.springframework.aop.Advisor;
import org.springframework.aop.aspectj.AspectJExpressionPointcut;
import org.springframework.aop.support.DefaultPointcutAdvisor;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.transaction.PlatformTransactionManager;
import org.springframework.transaction.TransactionDefinition;
import org.springframework.transaction.interceptor.DefaultTransactionAttribute;
import org.springframework.transaction.interceptor.NameMatchTransactionAttributeSource;
import org.springframework.transaction.interceptor.TransactionInterceptor;

/**
 * @program: Druid
 * @description:
 * @author: ChenYu
 * @create: 2018-09-20 16:47
 **/
@Aspect
@Configuration
public class TransactionAdviceConfig {

    private static final String AOP_POINTCUT_EXPRESSION = "execution(* com.example.demo.service.*.*(..))";

    @Autowired
    private PlatformTransactionManager transactionManager;

    @Bean
    public TransactionInterceptor txAdvice() {

        DefaultTransactionAttribute txAttr_REQUIRED = new DefaultTransactionAttribute();
        txAttr_REQUIRED.setPropagationBehavior(TransactionDefinition.PROPAGATION_REQUIRED);

        DefaultTransactionAttribute txAttr_REQUIRED_READONLY = new DefaultTransactionAttribute();
        txAttr_REQUIRED_READONLY.setPropagationBehavior(TransactionDefinition.PROPAGATION_REQUIRED);
        txAttr_REQUIRED_READONLY.setReadOnly(true);

        NameMatchTransactionAttributeSource source = new NameMatchTransactionAttributeSource();

        source.addTransactionalMethod("save*", txAttr_REQUIRED);
        source.addTransactionalMethod("delete*", txAttr_REQUIRED);
        source.addTransactionalMethod("update*", txAttr_REQUIRED);
        source.addTransactionalMethod("exec*", txAttr_REQUIRED);
        source.addTransactionalMethod("set*", txAttr_REQUIRED);
        source.addTransactionalMethod("get*", txAttr_REQUIRED_READONLY);
        source.addTransactionalMethod("query*", txAttr_REQUIRED_READONLY);
        source.addTransactionalMethod("find*", txAttr_REQUIRED_READONLY);
        source.addTransactionalMethod("list*", txAttr_REQUIRED_READONLY);
        source.addTransactionalMethod("count*", txAttr_REQUIRED_READONLY);
        source.addTransactionalMethod("is*", txAttr_REQUIRED_READONLY);

        return new TransactionInterceptor(transactionManager, source);
    }

    @Bean
    public Advisor txAdviceAdvisor() {
        AspectJExpressionPointcut pointcut = new AspectJExpressionPointcut();
        pointcut.setExpression(AOP_POINTCUT_EXPRESSION);
        return new DefaultPointcutAdvisor(pointcut, txAdvice());
    }

}