在使用spring mvc时出现自动注解失败

Question

Exception encountered during context initialization - cancelling refresh attempt
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'homeController': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private lab.service.LabService lab.controller.HomeController.labservice; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'lab.service.LabServiceImpl#0': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private lab.dao.ActivityDaoImpl lab.service.LabServiceImpl.activityDao; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [lab.dao.ActivityDaoImpl] 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:1210)
    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$1.getObject(AbstractBeanFactory.java:303)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:755)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:757)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480)
    at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:403)
    at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:306)
    at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:106)
    at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4728)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5162)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
    at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:725)
    at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:701)
    at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:717)
    at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:581)
    at org.apache.catalina.startup.HostConfig$DeployDescriptor.run(HostConfig.java:1683)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private lab.service.LabService lab.controller.HomeController.labservice; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'lab.service.LabServiceImpl#0': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private lab.dao.ActivityDaoImpl lab.service.LabServiceImpl.activityDao; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [lab.dao.ActivityDaoImpl] 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:561)
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331)
    ... 26 more`<?xml version="1.0" encoding="utf-8"?>
<beans
    xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:p="http://www.springframework.org/schema/p"
    xmlns:context="http://www.springframework.org/schema/context"  
    xmlns:mvc="http://www.springframework.org/schema/mvc"  
    xsi:schemaLocation="http://www.springframework.org/schema/beans 
    http://www.springframework.org/schema/beans/spring-beans-3.0.xsd 
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context-3.0.xsd
    http://www.springframework.org/schema/mvc
    http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">


    <!-- 开启controller注解支持 -->
    <context:component-scan base-package="lab.controller">
        <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>

    <!-- 默认的注解映射的支持 -->
    <mvc:annotation-driven />    

    <!-- 视图解释类 -->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsp/"/>
        <property name="suffix" value=".jsp"/><!--可为空,方便实现自已的依据扩展名来选择视图解释类的逻辑  -->      
    </bean>    

    <!-- 静态资源 -->     
    <mvc:resources mapping="/images/**" location="/images/" />
    <mvc:resources mapping="/css/**" location="/css/" />
    <mvc:resources mapping="/js/**" location="/js/" />
    <mvc:resources mapping="/mp3/**" location="/mp3/" />

    <!-- datasource --> 
    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource"> 
        <property name="driverClassName" value="org.h2.Driver"/>
        <property name="url" value="jdbc:h2:C:/Users/Administrator/workspace/chunmiao/activity;DB_CLOSE_DELAY=-1;MVCC=true"/>
        <property name="username" value="sa" />
        <property name="password" value="" />
    </bean> 


    <!-- dao -->
    <bean id="ActivityDao" class="lab.dao.ActivityDao">  
        <property name="dataSource" ref="dataSource" />  
    </bean>  

   <!-- hibernate session -->
    <bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
        <property name="dataSource" ref="dataSource" />
        <property name="configLocation" value="classpath:hibernate.cfg.xml" />
    </bean>   

    <!-- hibernate dao -->
    <bean id="userDao" class="lab.dao.UserDaoImpl">
        <constructor-arg>
            <ref bean="sessionFactory" />
        </constructor-arg>
    </bean>

    <bean id="activitiesDao" class="lab.dao.ActivitiesDaoImpl">
        <constructor-arg>
            <ref bean="sessionFactory" />
        </constructor-arg>
    </bean>

    <!-- service -->
    <bean class="lab.service.LabServiceImpl"/>

</beans> `package lab.service;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import lab.dao.ActivitiesDao;
import lab.dao.ActivityDaoImpl;
import lab.dao.UserDao;
import lab.model.Activities;
import lab.model.User;


public class LabServiceImpl implements LabService {

    @Autowired
    private UserDao userDao; 

    @Autowired
    private ActivitiesDao activitiesDao; 

    @Autowired
    private ActivityDaoImpl activityDao; 

    @Override
    public User login(String account, String password,int type) {
        //return TestData.login(account, password);
        return userDao.findUser(account, password, type);
    }

    public List<Activities> findNews() {
        //return TestData.login(account, password);
        return activitiesDao.findNews();
    }
    public boolean createAct(String name,String people,String cutOffTime,String activityTime,
            String intro){
        return activityDao.createA(name,people,cutOffTime,activityTime,intro);

    }
}

Answer 1

org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [lab.dao.ActivityDaoImpl] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency.

这句话告诉你你缺少了lab.dao.ActivityDaoImpl这个类型的bean

Answer 2

你的activityDao没有看到你配置bean啊