org.springframework.beans.factory.BeanCreationException: Fehler beim Erstellen einer Bean mit dem Namen 'personController'

Question

Ich habe mein Projekt gestartet, indem ich Entitäten, Services und JUnit-Tests für Services mit Spring-Daten erstellt habe. All das funktioniert großartig. Dann habe ich spring-mvc hinzugefügt, um diese Webanwendung mit vielen verschiedenen Schritt-für-Schritt-Anleitungen zu erstellen, aber wenn ich versuche, Controller mit @Autowired-Annotation zu machen. Und ich habe eine Ausnahme von der Eclipse und ich habe versucht, es zu lösen, aber ich kann immer noch nicht mit diesem Problem umgehen.

PersonRepsoitory

package com.wei.springdata; 
import org.springframework.data.jpa.repository.JpaRepository; 
import org.springframework.data.repository.CrudRepository; 
import org.springframework.data.repository.PagingAndSortingRepository; 

//@RepositoryDefinition(domainClass=Person.class,idClass=Integer.class) 
public interface PersonRepsoitory extends JpaRepository<Person,Integer> { 
} 

PersonService_interface

package com.wei.springdata; 

import java.util.List; 

public interface PersonService_interface { 
    public void savePersons(List<Person> persons); 
    public List<Person> getAllPerson(); 
} 

PersonService

package com.wei.springdata; 

import java.util.ArrayList; 
import java.util.Iterator; 
import java.util.List; 


import org.springframework.beans.factory.annotation.Autowired; 
import org.springframework.stereotype.Service; 
import org.springframework.transaction.annotation.Transactional; 

@Service 
public class PersonService implements PersonService_interface{ 

@Autowired 
private PersonRepsoitory personRepsoitory; 

@Override 
public void savePersons(List<Person> persons){ 
    personRepsoitory.save(persons); 
} 
@Override 
public List<Person> getAllPerson() { 
    List<Person> person=new ArrayList<Person>(); 
    Iterable<Person> personIterable=personRepsoitory.findAll(); 
    Iterator<Person> perosnIterator=personIterable.iterator(); 
    while(perosnIterator.hasNext()) 
    { 
     person.add(perosnIterator.next()); 
    } 
    return person; 
    } 


} 

applicationContext.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:tx="http://www.springframework.org/schema/tx" 
xmlns:jpa="http://www.springframework.org/schema/data/jpa" 
xsi:schemaLocation="http://www.springframework.org/schema/beans 
http://www.springframework.org/schema/beans/spring-beans.xsd 
    http://www.springframework.org/schema/data/jpa 
http://www.springframework.org/schema/data/jpa/spring-jpa-1.3.xsd 
    http://www.springframework.org/schema/tx 
http://www.springframework.org/schema/tx/spring-tx-4.0.xsd 
    http://www.springframework.org/schema/context 
http://www.springframework.org/schema/context/spring-context-4.0.xsd"> 

<!-- 配置自動掃描的包 --> 
<context:component-scan base-package="com.wei.springdata"> 
</context:component-scan> 

<!-- 1. 配置數據源 --> 
<context:property-placeholder location="classpath:db.properties"/> 

<bean id="dataSource" 
    class="com.mchange.v2.c3p0.ComboPooledDataSource"> 
    <property name="user" value="${jdbc.user}"></property> 
    <property name="password" value="${jdbc.password}"></property> 
    <property name="driverClass" value="${jdbc.driverClass}"></property> 
    <property name="jdbcUrl" value="${jdbc.jdbcUrl}"></property> 

    <!-- 配置其他属性 --> 
</bean> 

<!-- 2. 配置 JPA 的 EntityManagerFactory --> 
<bean id="entityManagerFactory" 

class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean"> 
    <property name="dataSource" ref="dataSource"></property> 
    <property name="jpaVendorAdapter"> 
     <bean 
class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter"></bean> 
    </property> 
    <property name="packagesToScan" value="com.wei.springdata"></property> 
    <property name="jpaProperties"> 
     <props> 
      <!-- 二级緩存相關 --> 
      <!-- 
      <prop key="hibernate.cache.region.factory_class">org.hibernate.cache.ehcache.EhCacheRegionFactory</prop> 
      <prop key="net.sf.ehcache.configurationResourceName">ehcache-hibernate.xml</prop> 
      --> 
      <!-- 生成的數據表的列的映射策略 --> 
      <prop key="hibernate.ejb.naming_strategy">org.hibernate.cfg.ImprovedNamingStrategy</prop> 
      <!-- hibernate 基本属性 --> 
      <prop key="hibernate.dialect">org.hibernate.dialect.MySQL5InnoDBDialect</prop> 
      <prop key="hibernate.show_sql">true</prop> 
      <prop key="hibernate.format_sql">true</prop> 
      <prop key="hibernate.hbm2ddl.auto">update</prop> 
     </props> 
    </property> 
</bean> 

<!-- 3. 配置事務管理器 --> 
<bean id="transactionManager" 
    class="org.springframework.orm.jpa.JpaTransactionManager"> 
    <property name="entityManagerFactory" ref="entityManagerFactory"></property>  
</bean> 

<!-- 4. 配置支持注解的事务 --> 
<tx:annotation-driven transaction-manager="transactionManager"/> 

<!-- 5. 配置 SpringData --> 
<!-- 加入 jpa 的命名空间 --> 
<!-- base-package: 掃描 Repository Bean 所在的 package --> 
<jpa:repositories base-package="com.wei.springdata" 
    entity-manager-factory-ref="entityManagerFactory"></jpa:repositories> 

feder servlet.xml

<beans xmlns="http://www.springframework.org/schema/beans" 
xmlns:context="http://www.springframework.org/schema/context" 
xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xsi:schemaLocation="http://www.springframework.org/schema/beans 
http://www.springframework.org/schema/beans/spring-beans-4.0.xsd 
http://www.springframework.org/schema/mvc 
http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd 
http://www.springframework.org/schema/context 
http://www.springframework.org/schema/context/spring-context-4.0.xsd"> 

<!-- 通知 spring-webmvc 掃描「某自訂套件」內，是否有被相關Annotation設定為元件的類別 --> 
<context:component-scan base-package="com.wei.springdata.controller." /> 
<!-- 必須使用以下標籤啟用「自訂控制器」內 @Controller 的Annotation支援 --> 
<mvc:annotation-driven /> 

<!-- Internal Resource View (內部資源視圖): --> 
<!-- 在Spring MVC中，對於好的做法，它總是建議把整個Views或JSP文件放在"WEB-INF"目錄底下， 以保護其免受透過手動輸入網址而直接存取(direct access)。 --> 
<!-- 放在"WEB-INF"目錄底下的這些Views或JSP文件，被命名為Internal Resource View (內部資源視圖)， 因為它只能由透過servlet或Spring控制器類別來存取。 --> 
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> 
    <property name="prefix" value="/WEB-INF/views/" /> 
    <property name="suffix" value=".jsp" /> 
</bean> 

<!-- 靜態資源目錄resources，存放如 CSS/JavaScript...等 --> 
<mvc:resources mapping="/resources/**" location="/resources/" /> 

<!-- Spring3.1開始支援-方法級別驗證 (JSR-349 Bean Validation 1.1) --> 
<bean class="org.springframework.validation.beanvalidation.MethodValidationPostProcessor"/> 

Exception

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'personController': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: com.wei.springdata.PersonService com.wei.springdata.controller.PersonController.personService; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.wei.springdata.PersonService] 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:292) 
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1185) 
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:537) 
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475) 
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:304) 
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228) 
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:300) 
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:195) 
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:700) 
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:760) 
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:482) 
at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:643) 
at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:606) 
at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:657) 
at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:525) 
at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:466) 
at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136) 
at javax.servlet.GenericServlet.init(GenericServlet.java:158) 
at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1269) 
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1182) 
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1072) 
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5368) 
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5660) 
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145) 
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1571) 
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1561) 
at java.util.concurrent.FutureTask.run(FutureTask.java:266) 
at org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'personController': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: com.wei.springdata.PersonService com.wei.springdata.controller.PersonController.personService; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.wei.springdata.PersonService] 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:292) 
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1185) 
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:537) 
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475) 
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:304) 
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228) 
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:300) 
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:195) 
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:700) 
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:760) 
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:482) 
at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:643) 
at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:606) 
at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:657) 
at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:525) 
at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:466) 
at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136) 
at javax.servlet.GenericServlet.init(GenericServlet.java:158) 
at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1269) 
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1182) 
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1072) 
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5368) 
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5660) 
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145) 
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1571) 
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1561) 
at java.util.concurrent.FutureTask.run(FutureTask.java:266) 
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) 
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) 
at java.lang.Thread.run(Thread.java:745) 
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: com.wei.springdata.PersonService com.wei.springdata.controller.PersonController.personService; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.wei.springdata.PersonService] 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$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:508) 
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87) 
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:289) 
... 29 more 
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.wei.springdata.PersonService] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} 
at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException(DefaultListableBeanFactory.java:1100) 
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:960) 
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:855) 
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:480) 
... 31 more 

Answer 1

In You spring-servlet.xml sieht das Tag falsch aus: Der Paketname endet mit einem Punkt. Versuchen Sie <context:component-scan base-package="com.wei.springdata,com.wei.springdata.controller" />

stattdessen!