spring-boot 事務異常： because it is a JDK dynamic proxy that implement
阿新 • • 發佈：2018-11-10
使用spring-boot做事務管理時，出現異常：The bean 'xxx' could not be injected as a 'xx.xxxx' because it is a JDK dynamic proxy that implements:
搞了半天發現是因為代理的原因；
異常資訊：
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
開啟@Transactional 註解支援，兩種方式，一種是通過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>
@EnableTransactionManagement
，將該註解標註在
@Configuration
類上，等價於上面的
<tx:annotation-driven/>
Spring推薦獎該註解標記在類（方法）而不是介面，將註解標記在介面上時，只有使用動態代理的時候才會生效，需要標記
proxy-target-class="true"
或者
mode="aspectj"，如下：
@Configuration @EnableTransactionManagement(proxyTargetClass = true) @ComponentScan("com.yihu.hos.rest") public class BeanConfiguration {}
@Transaction
的類會自動開啟動態代理，java的代理機制主要有
JDK動態代理
和
CGLIB
，報上面的錯誤是因為使用了JDK動態代理機制，我嘗試開啟@Transaction設定@EnableTransactionManagement(proxyTargetClass = true)，問題解決；特此記錄一下；
參考文章：http://hrps.me/2016/11/03/spring-transaction/