MyBatis与Spring 整合后，创建Bean报奇葩错的解决

代理了MaBatis Generator自动生成的Mapper的类

package com.aliapp.wxxd.material.service;

import interfaces.EntityWrapperInterface;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Repository;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import com.aliapp.wxxd.material.entity.db.Material;
import com.aliapp.wxxd.material.entity.db.MaterialCount;
import com.aliapp.wxxd.material.entity.db.MaterialCountExample;
import com.aliapp.wxxd.material.mapper.MaterialCountMapper;

import util.FileUtil;
import util.ienum.MessageTypeEnum;

/**
*
*
* @author VanXD
*
*/
@Service
public class MaterialCountMapperProxy implements MaterialCountMapper{ //注意这个接口是自动生成的，为了让Proxy与目标接口一致，所以我也实现了它<pre name="code" class="java">
@Autowired
MaterialCountMapper materialCountMapper;
//...

//..

}

启动TOMCAT 报错：

WARN [localhost-startStop-1] - Exception encountered during context initialization - cancelling refresh attemptorg.springframework.beans.factory.BeanCreationException: Error creating bean with name 'materialFacade': Injection of autowired dependencies failed;
nested exception isorg.springframework.beans.factory.BeanCreationException: Could not autowire field: com.aliapp.wxxd.material.service.MaterialCountMapperProxy facade.MaterialFacade.materialCountMapperProxy; nested exception is
org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.aliapp.wxxd.material.service.MaterialCountMapperProxy] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency.
Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:334)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1202) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:537)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:762)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:757) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480) at
org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:403) at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:306) at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:106)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4772) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5196) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1409)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1399) at java.util.concurrent.FutureTask.run(FutureTask.java:262) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:744)

。。。

。。

。。

Spring表示没找到 MaterialCountMapperProxy 这个类的Bean，注意我是加了@Service，并且配置文件进行了扫描的。

mapper由Spring 进行扫描配置

<!-- mapper 扫描配置 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
<property name="basePackage" value="com.aliapp.wxxd.material.mapper"></property>
</bean>

扫描出来后，肯定是在IOC容器中进行了Bean的装配，就怀疑是这里有关联，所以会出错。

将

implements MaterialCountMapper

去掉，TOMCAT 正常启动。

但是这样，又不能保证我的代理类的接口和Mapper的一致。。。

而如果我事务不关联这个类，又可以实现这个接口，正常启动。。。真是郁闷

/***************************** 2015-07-30 17:19:15 *****************************/

将@Service的扫描，从Spring 容器移动到Spring MVC容器

也就是这样：

<!-- 扫描 Service start -->
<context:component-scan base-package="com.aliapp.wxxd.material.service">
<context:include-filter type="annotation"
expression="org.springframework.stereotype.Service" />
</context:component-scan>
<context:component-scan base-package="facade">
<context:include-filter type="annotation"
expression="org.springframework.stereotype.Service" />
</context:component-scan>
<!-- end 扫描 Service -->

这样就可以加上 implements MaterialCountMapper
保证接口一致了，猜测可能是Spring的事务导致容器没加载这个Bean?现在放在Spring MVC的容器中加载，再由Spring容器管理事务，就解决了。

/***************************** 2015年8月8日
12:58:13 *****************************/

猜测,应该是配置了AOP功能后，相应的Bean只能在子容器中获取，所以配置在父容器中获取不到Bean。

/***************************** 2015年8月20日
08:55:31 *****************************/

确认是因为父，子容器获取不到Bean而出错，我将扫描Service放在SpringIoC容器中，将事务管理放在了SpringMVC IoC中，问题解决

SpringMVC+Mybatis+Spring+Shiro+ehcache整合配置文件

http://download.csdn.net/detail/tragedyxd/9026633