spring4、通用mapper的注入

Question

下面是堆栈信息，通用mapper无法注入。spring版本4.2.3，通用mapper版本3.3.2

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'baseServiceImpl': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: protected tk.mybatis.mapper.common.Mapper net.jielan.base.service.impl.BaseServiceImpl.mapper; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [tk.mybatis.mapper.common.Mapper] 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) ~[spring-beans-4.2.3.RELEASE.jar:?]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1214) ~[spring-beans-4.2.3.RELEASE.jar:?]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:543) ~[spring-beans-4.2.3.RELEASE.jar:?]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482) ~[spring-beans-4.2.3.RELEASE.jar:?]
	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) ~[spring-beans-4.2.3.RELEASE.jar:?]
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.2.3.RELEASE.jar:?]
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) ~[spring-beans-4.2.3.RELEASE.jar:?]
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) ~[spring-beans-4.2.3.RELEASE.jar:?]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:772) ~[spring-beans-4.2.3.RELEASE.jar:?]
	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:838) ~[spring-context-4.2.3.RELEASE.jar:?]
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:537) ~[spring-context-4.2.3.RELEASE.jar:?]
	at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:446) ~[spring-web-4.2.3.RELEASE.jar:4.2.3.RELEASE]
	at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:328) [spring-web-4.2.3.RELEASE.jar:4.2.3.RELEASE]
	at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:107) [spring-web-4.2.3.RELEASE.jar:4.2.3.RELEASE]
	at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4729) [catalina.jar:8.0.24]
	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5167) [catalina.jar:8.0.24]
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) [catalina.jar:8.0.24]
	at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:725) [catalina.jar:8.0.24]
	at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:701) [catalina.jar:8.0.24]
	at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:717) [catalina.jar:8.0.24]
	at org.apache.catalina.startup.HostConfig.manageApp(HostConfig.java:1648) [catalina.jar:8.0.24]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_51]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_51]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_51]
	at java.lang.reflect.Method.invoke(Method.java:497) ~[?:1.8.0_51]
	at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:300) [tomcat-coyote.jar:8.0.24]
	at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819) [?:1.8.0_51]
	at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801) [?:1.8.0_51]
	at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:463) [catalina.jar:8.0.24]
	at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:413) [catalina.jar:8.0.24]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_51]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_51]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_51]
	at java.lang.reflect.Method.invoke(Method.java:497) ~[?:1.8.0_51]
	at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:300) [tomcat-coyote.jar:8.0.24]
	at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819) [?:1.8.0_51]
	at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801) [?:1.8.0_51]
	at javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1470) [?:1.8.0_51]
	at javax.management.remote.rmi.RMIConnectionImpl.access$300(RMIConnectionImpl.java:76) [?:1.8.0_51]
	at javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run(RMIConnectionImpl.java:1311) [?:1.8.0_51]
	at javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(RMIConnectionImpl.java:1403) [?:1.8.0_51]
	at javax.management.remote.rmi.RMIConnectionImpl.invoke(RMIConnectionImpl.java:832) [?:1.8.0_51]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_51]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_51]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_51]
	at java.lang.reflect.Method.invoke(Method.java:497) ~[?:1.8.0_51]
	at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:323) [?:1.8.0_51]
	at sun.rmi.transport.Transport$1.run(Transport.java:200) [?:1.8.0_51]
12-Dec-2015 23:46:22.697 SEVERE [RMI TCP Connection(2)-127.0.0.1] org.apache.catalina.core.StandardContext.startInternal One or more listeners failed to start. Full details will be found in the appropriate container log file
	at sun.rmi.transport.Transport$1.run(Transport.java:197) [?:1.8.0_51]
12-Dec-2015 23:46:22.699 SEVERE [RMI TCP Connection(2)-127.0.0.1] org.apache.catalina.core.StandardContext.startInternal Context [/erp] startup failed due to previous errors
	at java.security.AccessController.doPrivileged(Native Method) ~[?:1.8.0_51]
	at sun.rmi.transport.Transport.serviceCall(Transport.java:196) [?:1.8.0_51]
	at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:568) [?:1.8.0_51]
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:826) [?:1.8.0_51]
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$255(TCPTransport.java:683) [?:1.8.0_51]
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler$$Lambda$1/2105996009.run(Unknown Source) [?:1.8.0_51]
	at java.security.AccessController.doPrivileged(Native Method) ~[?:1.8.0_51]
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:682) [?:1.8.0_51]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [?:1.8.0_51]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [?:1.8.0_51]
	at java.lang.Thread.run(Thread.java:745) [?:1.8.0_51]
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: protected tk.mybatis.mapper.common.Mapper net.jielan.base.service.impl.BaseServiceImpl.mapper; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [tk.mybatis.mapper.common.Mapper] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:573) ~[spring-beans-4.2.3.RELEASE.jar:?]
	at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88) ~[spring-beans-4.2.3.RELEASE.jar:?]
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331) ~[spring-beans-4.2.3.RELEASE.jar:?]
	... 59 more
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [tk.mybatis.mapper.common.Mapper] 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.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException(DefaultListableBeanFactory.java:1373) ~[spring-beans-4.2.3.RELEASE.jar:?]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1119) ~[spring-beans-4.2.3.RELEASE.jar:?]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1014) ~[spring-beans-4.2.3.RELEASE.jar:?]
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:545) ~[spring-beans-4.2.3.RELEASE.jar:?]
	at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88) ~[spring-beans-4.2.3.RELEASE.jar:?]
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331) ~[spring-beans-4.2.3.RELEASE.jar:?]
	... 59 more

这是项目结构：

自定义通用mapper

public interface CustomMapper<T> extends BaseMapper<T>,MySqlMapper<T>,ConditionMapper<T>{
}

通用service接口：

public interface BaseService<T> {

    int save(T entity);

    int update(T entity);

    T getById(Integer id);

    int deleteById(Integer id);

    List<T> selectPage(int pageNum, int pageSize);
}

通用service实现类：

@Service
public class BaseServiceImpl<T> implements BaseService<T> {

    @Autowired
    protected Mapper<T> mapper;

    @Override
    public int save(T entity) {
        return mapper.insertSelective(entity);
    }

    @Override
    public int update(T entity) {
        return mapper.updateByPrimaryKeySelective(entity);
    }

    @Override
    public T getById(Integer id) {
        return mapper.selectByPrimaryKey(id);
    }

    @Override
    public int deleteById(Integer id) {
        return mapper.deleteByPrimaryKey(id);
    }

    @Override
    public List<T> selectPage(int pageNum, int pageSize) {
        PageHelper.startPage(pageNum,pageSize);
        return mapper.selectAll();
    }
}

业务service接口

public interface TestService extends BaseService<Test>{
}

业务service实现类

@Service
public class TestServiceImpl extends BaseServiceImpl<Test> implements TestService {

    @Autowired
    TestDao testDao;

}

spring配置文件里面和mybatis相关部分

<!-- mybatis配置 -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"
          p:dataSource-ref="dataSource"
          p:mapperLocations="classpath:net/jielan/erp/dao/mapper/*.xml"
          p:typeAliasesPackage="net.jielan.erp.entity">
        <property name="plugins">
            <array>
                <bean class="com.github.pagehelper.PageHelper">
                    <property name="properties">
                        <value>
                            <!-- 该参数默认为false -->
                            <!-- 设置为true时，会将RowBounds第一个参数offset当成pageNum页码使用 -->
                            <!-- 和startPage中的pageNum效果一样-->
                            offsetAsPageNum=true
                            <!-- 该参数默认为false -->
                            <!-- 设置为true时，使用RowBounds分页会进行count查询 -->
                            rowBoundsWithCount=true
                            <!-- 设置为true时，如果pageSize=0或者RowBounds.limit = 0就会查询出全部的结果 -->
                            <!-- （相当于没有执行分页查询，但是返回结果仍然是Page类型）-->
                            pageSizeZero=true
                            <!-- 3.3.0版本可用 - 分页参数合理化，默认false禁用 -->
                            <!-- 启用合理化时，如果pageNum<1会查询第一页，如果pageNum>pages会查询最后一页 -->
                            <!-- 禁用合理化时，如果pageNum<1或pageNum>pages会返回空数据 -->
                            reasonable=false
                        </value>
                    </property>
                </bean>
            </array>
        </property>
    </bean>

    <!-- spring与mybatis整合配置，扫描所有dao -->
    <!--<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"-->
    <!--p:basePackage="net.jielan.erp.dao"-->
    <!--p:sqlSessionFactoryBeanName="sqlSessionFactory"/>-->

    <bean class="tk.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="net.jielan.erp.dao"></property>
        <property name="markerInterface" value="net.jielan.base.dao.CustomMapper"></property>
        <!--<property name="properties">
            <value>
                mappers=tk.mybatis.mapper.common.Mapper
            </value>
        </property>-->
    </bean>

    <bean id="sqlSession" class="org.mybatis.spring.SqlSessionTemplate" scope="prototype">
        <constructor-arg index="0" ref="sqlSessionFactory"/>
    </bean>

按照官方demo代码写的，为什么demo代码可以呢，我这里就不行了

Answer 1

成功注入了么？

Answer 2

最后的问题在通用service实现类上面，必须声明为抽象的。(/ □ )。。

@Service
public abstract class BaseServiceImpl<T> implements BaseService<T> {
}

Answer 3

NoSuchBeanDefinitionException: No qualifying bean of type [tk.mybatis.mapper.common.Mapper] 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)}

错误很明显。。你没有按照文档要求创建每个实体对应的Mapper...所以spring找不到注入的对象。

创建如UserMapper extends CustomMapper<User>