Spring-自动布线存储库不起作用@自动布线其他类可以

Question

我试图自动连接存储库，但它拒绝工作。我已经为此挣扎了一个星期了，我似乎想不出来。有趣的是，当我注释掉个人存储库的自动连线时，程序正常工作并编译，但一旦我尝试自动连线个人存储库，我就会收到这个错误（我忽略了大部分错误，因为我无法发布所有错误）

HTTP Status 500 - Servlet.init() for servlet appServlet threw exception
type Exception report
message Servlet.init() for servlet appServlet threw exception
description The server encountered an internal error that prevented it from fulfilling this request.
exception
javax.servlet.ServletException: Servlet.init() for servlet appServlet threw exception
    org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
    org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
    org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
    org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
    org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023)
    org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
    org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:1852)
    java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
    java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
    java.lang.Thread.run(Thread.java:722)
root cause
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: com.mycompany.smsdatabase.service.PersonImport com.mycompany.smsdatabase.controller.HomeController.personImport; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'personImport': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.mycompany.smsdatabase.repositories.PersonRepository com.mycompany.smsdatabase.service.PersonImport.PersonRepository; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type [com.mycompany.smsdatabase.repositories.PersonRepository] 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)}
    org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:287)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1106)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:517)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
    org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294)
    org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225)
    org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291)
    org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
    org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:585)
    org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:913)
    org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:464)
    org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:631)
    org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:588)
    org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:645)
    org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:508)
    org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:449)
    org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:133)
    javax.servlet.GenericServlet.init(GenericServlet.java:160)
    org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
    org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
    org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
    org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
    org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023)
    org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
    org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:1852)
    java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
    java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
    java.lang.Thread.run(Thread.java:722)

以下是我正在学习的课程。

package com.mycompany.smsdatabase.controller;
import com.mycompany.smsdatabase.service.PersonImport;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
@Controller
public class HomeController {
   @Autowired
   PersonImport personImport;
   @RequestMapping(value = "/", method = RequestMethod.GET)
    public String Home()
    {
      personImport.doImportPerson("anthony");
      return "index";
    }
}
package com.mycompany.smsdatabase.service;
import com.mycompany.smsdatabase.domain.Person;
import com.mycompany.smsdatabase.repositories.PersonRepository;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
@Service
@Transactional
public class PersonImport  {
@Autowired
private PersonRepository PersonRepository;
 public Person doImportPerson( String id)
 {   
  Person person = PersonRepository.findById(id);
  if (person == null) {
    person = new Person(id,"anthony");
     }
   PersonRepository.save(person);
     System.out.println("inside doImportPerson");
     return person;
 }
}
package com.mycompany.smsdatabase.repositories;
import com.mycompany.smsdatabase.domain.Person;
import org.springframework.data.neo4j.repository.GraphRepository;
import org.springframework.stereotype.Repository;
import org.springframework.transaction.annotation.Transactional;
@Repository
public interface PersonRepository extends GraphRepository<Person>{
    Person findById(String id);
}

我省略了person类，因为它只是一个节点实体类。

这里还有我的应用程序上下文xml

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<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"
       xmlns:neo4j="http://www.springframework.org/schema/data/neo4j"
       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/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
    http://www.springframework.org/schema/data/neo4j
    http://www.springframework.org/schema/data/neo4j/spring-neo4j.xsd 
    http://www.springframework.org/schema/tx 
    http://www.springframework.org/schema/tx/spring-tx.xsd">
    <mvc:annotation-driven />
    <context:component-scan base-package="com.mycompany.smsdatabase">
    </context:component-scan>
    <context:spring-configured/>
    <neo4j:config storeDirectory="target/data/graph.db"/>
    <neo4j:repositories base-package="com.mycompany.smsdatabase"/>
    <bean id="graphDatabaseService" class="org.neo4j.test.ImpermanentGraphDatabase" destroy-method="shutdown"/>
    <tx:annotation-driven mode="proxy"/>
</beans>

Answer 1

您的spring配置错误：

您的配置中有<neo4j:repositories base-package="com.mycompany.smsdatabase"/>

但是java代码中的导入读取

import com.mycompany.smsdatabase.repositories.PersonRepository;

您应该将春季配置更正为

<neo4j:repositories base-package="com.mycompany.smsdatabase.repositories"/>

Answer 2

您应该为应用程序上下文文件中用@AutoWired注释的变量定义相应的bean，即

<bean id="personRepository" class="com.mycompany.smsdatabase.repositories.PersonRepository"/>
<bean id="personImport" class="com.mycompany.smsdatabase.service.PersonImport"/>