springMVC新手@Repository bean注入失败

使用@Repository注册interface形式的DAO,结果在sevice中使用@Resource形式注入失败,提示
No qualifying bean of type [net.yanmie.playground.dao.IMainDao] found for dependency

2个回答

首先,那么是不是DAO类没有在SpringMVC的扫描路径下呢?也就是说这个DAO类不受spring托管。
其次,检查下你这个DAO类是不是有多个实现类呢,这样的话,你要给不同的实现类设置个id(可以在XML配,有可以注解配@Service("具体的ID"))

你先查看下你的dao是否已经交给spring管理,然后试下使用@Service来直接业务逻辑层

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我用的是SpringMVC和Mybatis来做的 就是在customerService那注入失败 ![图片说明](https://img-ask.csdn.net/upload/201708/24/1503560242_572597.png) ![图片说明](https://img-ask.csdn.net/upload/201708/24/1503560265_566745.png) ![图片说明](https://img-ask.csdn.net/upload/201708/24/1503560274_428788.png) WARN [localhost-startStop-1] - Exception encountered during context initialization - cancelling refresh attempt org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'customerController': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.java.service.CustomerService com.java.controller.CustomerController.customerService; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.java.service.CustomerService] 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:302) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:298) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193) 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.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:663) at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:629) at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:677) at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:548) at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:489) at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136) at javax.servlet.GenericServlet.init(GenericServlet.java:158) at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1183) at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1099) at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:989) at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4913) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5223) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:752) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:728) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:734) at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1107) at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1841) 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 com.java.service.CustomerService com.java.controller.CustomerController.customerService; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.java.service.CustomerService] 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$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:558) at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87) at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331) ... 33 more Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.java.service.CustomerService] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException(DefaultListableBeanFactory.java:1308) at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1054) at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:949) at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:530) ... 35 more
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springmvc4.0使用@autowired注解自动注入失败
在控制器中自动注入service失败,求大神帮忙。我在serviceImpl中加了@service注解。在controller中是private IUserBiz userBiz这应该没错的 ![图片说明](https://img-ask.csdn.net/upload/201510/28/1445999931_234358.png)![图片说明](https://img-ask.csdn.net/upload/201510/28/1445999966_272487.png)
请教 SpringMVC 中 @Autowired 注入报错?
信息: Initializing Spring FrameworkServlet 'spring-mvc' 17:00:57,884 ERROR DispatcherServlet:457 - Context initialization failed org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userController': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.sp.service.impl.UserServiceImpl com.sp.web.UserController.userService; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type [com.sp.service.impl.UserServiceImpl] 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:287) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1106)
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springmvc依赖注入问题,不能注入
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Springmvc在线程池中无法使用Service
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使用tomcat如何只能访问https
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Spring框架使用setter方式依赖注入bean当bean和被注入的bean放在同一个包下面会警告Cannot access 该类?
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service: ``` package com.yhq.service.biz; import com.yhq.service.po.User; public interface UserBiz { void insert(User u); } ``` impl: ``` package com.yhq.service.impl; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import com.yhq.service.api.UserMapper; import com.yhq.service.biz.UserBiz; import com.yhq.service.po.User; @Service public class UserBizImpl implements UserBiz { @Autowired private UserMapper userMapper; public void insert(User u) { // TODO Auto-generated method stub userMapper.insert(u); } } ``` database.xml ``` <?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:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd"> <aop:aspectj-autoproxy/> <!-- 数据源配置,使用应用内的DBCP数据库连接池 --> <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close"> <property name="driverClassName"><value>${jdbc.driverClassName}</value></property> <property name="url"><value>${jdbc.url}</value></property> <property name="username"><value>${jdbc.username}</value></property> <property name="password"><value>${jdbc.password}</value></property> <property name="maxActive"><value>${jdbc.maxActive}</value></property> <property name="maxWait"><value>${jdbc.maxWait}</value></property> <property name="maxIdle"><value>${jdbc.maxIdle}</value></property> <property name="initialSize"><value>${jdbc.initSize}</value></property> <property name="removeAbandoned"><value>true</value></property> <property name="testWhileIdle"><value>true</value></property> <property name="testOnBorrow"><value>false</value></property> <property name="validationQuery"><value>SELECT 1</value></property> </bean> <!-- Transaction manager for a single JDBC DataSource --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource" /> </bean> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource" /> <property name="configLocation" value="classpath:sqlmap-config.xml" /> <property name="mapperLocations"> <value>classpath*:com/yhq/service/map/*Mapper.xml</value> </property> </bean> <bean id="sqlSession" class="org.mybatis.spring.SqlSessionTemplate" scope="prototype"> <constructor-arg index="0" ref="sqlSessionFactory" /> </bean> <!-- 连接事务的注解配置 --> <tx:annotation-driven transaction-manager="transactionManager" /> <bean id="txInterceptor" class="org.springframework.transaction.interceptor.TransactionInterceptor"> <property name="transactionManager"> <ref bean="transactionManager"/> </property> <property name="transactionAttributes"> <props> <prop key="insert*">PROPAGATION_REQUIRED,-Exception</prop> <prop key="save*">PROPAGATION_REQUIRED,-Exception</prop> <prop key="delete*">PROPAGATION_REQUIRED,-Exception</prop> <prop key="update*">PROPAGATION_REQUIRED,-Exception</prop> <prop key="create*">PROPAGATION_REQUIRED,-Exception</prop> <prop key="*">PROPAGATION_REQUIRED,readOnly</prop> </props> </property> </bean> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="sqlSessionTemplateBeanName" value="sqlSession"/> <property name="basePackage"> <value> com.yhq.service.api </value> </property> </bean> <bean id="aspectJExpressionPointcutAdvisor" class="org.springframework.aop.aspectj.AspectJExpressionPointcutAdvisor"> <property name="advice"> <ref bean="txInterceptor" /> </property> <property name="expression"> <value><![CDATA[execution(* com.yhq..*.*BizImpl.*(..)) && @within(org.springframework.stereotype.Service) && (execution(* create*(..)) || execution(* delete*(..)) || execution(* update*(..)) || execution(* save*(..)))]]></value> </property> </bean> </beans> ``` spring.xml ``` <?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: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.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd"> <mvc:annotation-driven/> <context:component-scan base-package="com.yhq"> 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key="locale">zh_CN</prop> <prop key="default_encoding">UTF-8</prop> <prop key="number_format">0.##########</prop> <prop key="datetime_format">yyyy-MM-dd HH:mm:ss</prop> <prop key="classic_compatible">true</prop> <prop key="template_exception_handler">ignore</prop> </props> </property> </bean> </beans> ```
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