spring-boot 事务异常： because it is a JDK dynamic proxy that implement

使用spring-boot做事务管理时，出现异常：The bean 'xxx' could not be injected as a 'xx.xxxx' because it is a JDK dynamic proxy that implements:

搞了半天发现是因为代理的原因；

异常信息：

Error starting ApplicationContext. To display the auto-configuration report re-run your application with 'debug' enabled.
2017-08-01 09:37:14.845 ERROR 12264 --- [           main] o.s.b.d.LoggingFailureAnalysisReporter   : 

***************************
APPLICATION FAILED TO START
***************************

Description:

The bean 'AdapterSchemeVersionService' could not be injected as a 'com.yihu.hos.rest.services.standard.adapter.AdapterSchemeVersionService' because it is a JDK dynamic proxy that implements:


Action:

Consider injecting the bean as one of its interfaces or forcing the use of CGLib-based proxies by setting proxyTargetClass=true on @EnableAsync and/or @EnableCaching.

使用 @Transactional
开启@Transactional 注解支持，两种方式，一种是通过xml的方式(如下)

 <tx:annotation-driven transaction-manager="txManager"/><!-- a PlatformTransactionManager is still required -->
    <bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <!-- (this dependency is defined somewhere else) -->
        <property name="dataSource" ref="dataSource"/>
    </bean>

另外一种是使用 @EnableTransactionManagement ，将该注解标注在 @Configuration 类上，等价于上面的 <tx:annotation-driven/>
Spring推荐奖该注解标记在类（方法）而不是接口，将注解标记在接口上时，只有使用动态代理的时候才会生效，需要标记 proxy-target-class="true" 或者 mode="aspectj"，如下：

@Configuration
@EnableTransactionManagement(proxyTargetClass = true)
@ComponentScan("com.yihu.hos.rest")
public class BeanConfiguration {}

因为加了 @Transaction 的类会自动开启动态代理，java的代理机制主要有 JDK动态代理 和 CGLIB ，报上面的错误是因为使用了JDK动态代理机制，我尝试开启@Transaction设置@EnableTransactionManagement(proxyTargetClass = true)，问题解决；特此记录一下；

参考文章：http://hrps.me/2016/11/03/spring-transaction/

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