Spring整合Mybatis错误

最新推荐文章于 2022-02-27 16:25:45 发布

xianyongonly

最新推荐文章于 2022-02-27 16:25:45 发布

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分类专栏： sping 文章标签： spring Mybatis

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本文分享了一位开发者在进行Spring和Mybatis注解整合时遇到的问题和解决方法，包括错误分析、解决步骤以及相关配置建议。

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[size=small][b]最近几天闲来无事，做了Spring和Mybatis注解整合（Maven项目），虽然很难，一路走来很开心[/b][/size]

项目整合地址：[url]http://yudey.iteye.com/admin/blogs/1986446[/url]

[size=medium]直接看错误，然后再讲解决方法，欢迎大家补充[/size]

SEVERE: StandardWrapper.Throwable
org.springframework.beans.factory.BeanCreationException: Error creating bean with name'org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping#0': Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'loginController': Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type [com.mxy.service.AccountService] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@javax.annotation.Resource(mappedName=, shareable=true, description=, name=, type=class java.lang.Object, authenticationType=CONTAINER, lookup=)}
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:527)
....
	at java.lang.Thread.run(Unknown Source)
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'loginController': Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type [com.mxy.service.AccountService] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@javax.annotation.Resource(mappedName=, shareable=true, description=, name=, type=class java.lang.Object, authenticationType=CONTAINER, lookup=)}
	at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessPropertyValues(CommonAnnotationBeanPostProcessor.java:301)
...
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519)
	... 31 more
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type [com.mxy.service.AccountService] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@javax.annotation.Resource(mappedName=, shareable=true, description=, name=, type=class java.lang.Object, authenticationType=CONTAINER, lookup=)}
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException(DefaultListableBeanFactory.java:924)
...
	at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessPropertyValues(CommonAnnotationBeanPostProcessor.java:298)
	... 51 more

十二月 06, 2013 4:55:17 下午 org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Allocate exception for servlet exam
org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type [com.mxy.service.AccountService] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@javax.annotation.Resource(mappedName=, shareable=true, description=, name=, type=class java.lang.Object, authenticationType=CONTAINER, lookup=)}
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException(DefaultListableBeanFactory.java:924)
...
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:585)
	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:1770)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)

[size=medium][b]我承认错误比较多，看的眼花缭乱的[/b][/size]
[size=medium][b]其实总结起来就2中错误[/b][/size]
[size=small]1.[color=red][b]Error creating bean with name 'org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping#0'[/b][/color]
2. [color=red][b]No matching bean of type [com.mxy.service.AccountService] found for dependency[/b][/color][/size]

[size=x-large][color=green][b]解决方法：(欢迎大家补充)[/b][/color][/size]
[size=large][color=blue][b]第一种情况：（网上找的解决方法）我当时就是这种情况[/b][/color][/size]
i think it comes from this line in your XML file:

<context:component-scan base-package="com.mxy.controller" />

Replace it by:

<context:component-scan base-package="com.mxy" />

[size=large][color=blue][b]第二种情况：注入映射器[/b][/color][/size]
[size=medium][b]添加如下配置到Mybatis配置文件中，这种配置比较繁琐，每个接口都要配置下[/b][/size]

<bean id="accountMapper" class="org.mybatis.spring.mapper.MapperFactoryBean">
	  <property name="mapperInterface" value="com.mxy.mapper.AccountMapper" />
	  <property name="sqlSessionFactory" ref="sqlSessionFactory" />
	</bean>

[size=medium][b]或者添加下面的内容。这个方法比较爽，一劳永逸[/b][/size]

<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
		<property name="basePackage" value="com.mxy.mapper" />
	</bean>

[size=large][color=blue][b]第三种情况：在serviceImpl中要类上要添加@Service[/b][/color][/size]

@Service
public class BaseServiceImpl implements AccountService {

第四种情况：