org.springframework.beans.factory.BeanCreationException：創建名爲'homeController'的bean時出錯：注入自動裝配依賴失敗;

-1

我是春季MVC的新手。我正在寫CRUD Spring MVC應用程序來理解Spring MVC的流程。我收到錯誤org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'homeController': Injection of autowired dependencies failed。org.springframework.beans.factory.BeanCreationException：創建名爲'homeController'的bean時出錯：注入自動裝配依賴失敗;

我搜索了這個錯誤的解決方案，但找不到確切的解決方案。 stackoverflow有多個問題。但我真的不知道這個錯誤的原因是什麼，我該如何解決這個錯誤。

堆棧跟蹤

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 com.varun.contact.dao.ContactDao com.varun.contact.controller.HomeController.contactDao; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type [com.varun.contact.dao.ContactDao] 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) 
 
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:517) 
 
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456) 
 
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294) 
 
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225) 
 
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291) 
 
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193) 
 
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:585) 
 
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:913) 
 
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:464) 
 
at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:385) 
 
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:284) 
 
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:111) 
 
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3910) 
 
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4393) 
 
at org.jboss.web.tomcat.service.deployers.TomcatDeployment.performDeployInternal(TomcatDeployment.java:310) 
 
at org.jboss.web.tomcat.service.deployers.TomcatDeployment.performDeploy(TomcatDeployment.java:142) 
 
at org.jboss.web.deployers.AbstractWarDeployment.start(AbstractWarDeployment.java:461) 
 
at org.jboss.web.deployers.WebModule.startModule(WebModule.java:118) 
 
at org.jboss.web.deployers.WebModule.start(WebModule.java:97) 
 
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
 
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) 
 
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) 
 
at java.lang.reflect.Method.invoke(Unknown Source) 
 
at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:157) 
 
at org.jboss.mx.server.Invocation.dispatch(Invocation.java:96) 
 
at org.jboss.mx.server.Invocation.invoke(Invocation.java:88) 
 
at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264) 
 
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:668) 
 
at org.jboss.system.microcontainer.ServiceProxy.invoke(ServiceProxy.java:206) 
 
at com.sun.proxy.$Proxy39.start(Unknown Source) 
 
at org.jboss.system.microcontainer.StartStopLifecycleAction.installAction(StartStopLifecycleAction.java:42) 
 
at org.jboss.system.microcontainer.StartStopLifecycleAction.installAction(StartStopLifecycleAction.java:37) 
 
at org.jboss.dependency.plugins.action.SimpleControllerContextAction.simpleInstallAction(SimpleControllerContextAction.java:62) 
 
at org.jboss.dependency.plugins.action.AccessControllerContextAction.install(AccessControllerContextAction.java:71) 
 
at org.jboss.dependency.plugins.AbstractControllerContextActions.install(AbstractControllerContextActions.java:51) 
 
at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:348) 
 
at org.jboss.system.microcontainer.ServiceControllerContext.install(ServiceControllerContext.java:286) 
 
at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:1631) 
 
at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:934) 
 
at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1082) 
 
at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:984) 
 
at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:822) 
 
at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:553) 
 
at org.jboss.system.ServiceController.doChange(ServiceController.java:688) 
 
at org.jboss.system.ServiceController.start(ServiceController.java:460) 
 
at org.jboss.system.deployers.ServiceDeployer.start(ServiceDeployer.java:163) 
 
at org.jboss.system.deployers.ServiceDeployer.deploy(ServiceDeployer.java:99) 
 
at org.jboss.system.deployers.ServiceDeployer.deploy(ServiceDeployer.java:46) 
 
at org.jboss.deployers.spi.deployer.helpers.AbstractSimpleRealDeployer.internalDeploy(AbstractSimpleRealDeployer.java:62) 
 
at org.jboss.deployers.spi.deployer.helpers.AbstractRealDeployer.deploy(AbstractRealDeployer.java:50) 
 
at org.jboss.deployers.plugins.deployers.DeployerWrapper.deploy(DeployerWrapper.java:171) 
 
at org.jboss.deployers.plugins.deployers.DeployersImpl.doDeploy(DeployersImpl.java:1439) 
 
at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1157) 
 
at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1178) 
 
at org.jboss.deployers.plugins.deployers.DeployersImpl.install(DeployersImpl.java:1098) 
 
at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:348) 
 
at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:1631) 
 
at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:934) 
 
at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1082) 
 
at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:984) 
 
at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:822) 
 
at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:553) 
 
at org.jboss.deployers.plugins.deployers.DeployersImpl.process(DeployersImpl.java:781) 
 
at org.jboss.deployers.plugins.main.MainDeployerImpl.process(MainDeployerImpl.java:702) 
 
at org.jboss.system.server.profileservice.repository.MainDeployerAdapter.process(MainDeployerAdapter.java:117) 
 
at org.jboss.system.server.profileservice.hotdeploy.HDScanner.scan(HDScanner.java:362) 
 
at org.jboss.system.server.profileservice.hotdeploy.HDScanner.run(HDScanner.java:255) 
 
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) 
 
at java.util.concurrent.FutureTask.runAndReset(Unknown Source) 
 
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(Unknown Source) 
 
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknown Source) 
 
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) 
 
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) 
 
at java.lang.Thread.run(Unknown Source) 
 
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.varun.contact.dao.ContactDao com.varun.contact.controller.HomeController.contactDao; nested exc 
 
14:25:39,988 INFO [STDOUT] eption is org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type [com.varun.contact.dao.ContactDao] 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:506) 
 
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87) 
 
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:284) 
 
... 75 more 
 
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type [com.varun.contact.dao.ContactDao] 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:924) 
 
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:793) 
 
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:707) 
 
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:478) 
 
... 77 more

Contact.java

public class Contact { 
 
\t private int id; 
 
\t private String name; 
 
\t private String email; 
 
\t private String address; 
 
\t private String telephone; 
 

 
// Default Constructor 
 
// Parameterized Constructor 
 

 
//Getters and setters 
 
    \t }

的ContactDAO

public interface ContactDao { 
 
\t 
 
\t public void saveOrUpdate(Contact contact); 
 
\t public void delete(int contactId); 
 
\t public Contact get(int contactId); 
 
\t public List<Contact> list(); 
 
}

ContactDaoImpl

public class ContactDAOImpl implements ContactDao { 
 
\t 
 
\t private JdbcTemplate jdbcTemplate; 
 
\t 
 
\t 
 
\t public ContactDAOImpl(javax.activation.DataSource dataSource) { 
 
\t  jdbcTemplate = new JdbcTemplate((DataSource) dataSource); 
 
\t \t 
 
\t  } 
 
    \t //Insert or update a new contact: 
 
\t @Override 
 
\t public void saveOrUpdate(Contact contact) { 
 
\t \t if(contact.getId()>0){ 
 
\t \t \t //Update 
 
\t \t \t String sql="UPDATE CONTACT SET name=?,email=?,address=?," 
 
\t \t \t +"telephone=? where contact_id=?"; 
 
\t \t \t System.out.println("I am inside ContactDAOImpl : save or saveOrUpdate------------------------------------------------"); 
 
\t \t \t jdbcTemplate.update(sql,contact.getName(),contact.getEmail(),contact.getAddress(), 
 
\t \t \t \t \t contact.getTelephone(),contact.getId()); 
 
\t \t } 
 
\t \t else{ 
 
\t \t \t // Insert 
 
\t \t \t String sql="INSERT INTO CONTACT(name,email,address,telephone)" 
 
\t \t \t \t \t +"VALUES(?,?,?,?)"; 
 
\t \t \t jdbcTemplate.update(sql,contact.getName(),contact.getEmail(),contact.getAddress(), 
 
\t \t \t \t \t contact.getTelephone()); 
 
\t \t } 
 
\t \t 
 
\t } 
 

 
\t 
 
\t //Delete a contact: 
 
\t @Override 
 
\t public void delete(int contactId) { 
 
\t String sql="DELETE FROM CONTACT where contact_id=?"; 
 
\t System.out.println("I am inside ContactDAOImpl : save or delete -----------------------------------------------------------"); 
 
\t jdbcTemplate.update(sql,contactId); 
 
\t \t 
 
\t } 
 

 
\t //Get a particular contact: 
 
\t @Override 
 
\t public Contact get(int contactId) { 
 
\t 
 
\t \t String sql="SELECT * FROM CONTACT WHERE contact_id="+contactId; 
 
\t \t return jdbcTemplate.query(sql, new ResultSetExtractor<Contact>() { 
 
\t \t \t 
 
\t \t   @Override 
 
\t \t   public Contact extractData(ResultSet rs) throws SQLException, 
 
\t \t     DataAccessException { 
 
\t \t    if (rs.next()) { 
 
\t \t     Contact contact = new Contact(); 
 
\t \t     contact.setId(rs.getInt("contact_id")); 
 
\t \t     contact.setName(rs.getString("name")); 
 
\t \t     contact.setEmail(rs.getString("email")); 
 
\t \t     contact.setAddress(rs.getString("address")); 
 
\t \t     contact.setTelephone(rs.getString("telephone")); 
 
\t \t     return contact; 
 
\t \t    } 
 
\t \t 
 
\t \t    return null; 
 
\t \t   } 
 
\t \t 
 
\t \t  }); 
 
\t } 
 
\t 
 
\t //List all contact: 
 
\t @Override 
 
\t public List<Contact> list() { 
 
\t \t String sql = "SELECT * FROM contact"; 
 
\t \t System.out.println("I am inside List contact-------------------------- "); 
 
\t  List<Contact> listContact = jdbcTemplate.query(sql, new RowMapper<Contact>() { 
 
\t  
 
\t 
 
\t   @Override 
 
\t   public Contact mapRow(ResultSet rs, int rowNum) throws SQLException { 
 
\t    Contact aContact = new Contact(); 
 
\t 
 
\t    aContact.setId(rs.getInt("contact_id")); 
 
\t    aContact.setName(rs.getString("name")); 
 
\t    aContact.setEmail(rs.getString("email")); 
 
\t    aContact.setAddress(rs.getString("address")); 
 
\t    aContact.setTelephone(rs.getString("telephone")); 
 
\t    return aContact; 
 
\t   } 
 
    \t  }); 
 
\t  return listContact; 
 
\t } 
 
}

控制器類

@Controller 
 
public class HomeController { 
 
\t \t 
 
\t private static final Logger logger = LoggerFactory.getLogger(HomeController.class); 
 
\t @Autowired 
 
\t private ContactDao contactDao; 
 

 
\t //Handler method for listing all contacts (also served as home page): 
 
\t @RequestMapping(value = "/", method = RequestMethod.GET) 
 
\t public ModelAndView listContact(ModelAndView model) throws IOException{ 
 
\t  List<Contact> listContact = contactDao.list(); 
 
\t  model.addObject("listContact", listContact); 
 
\t  model.setViewName("home"); 
 
\t  return model; 
 
} 
 
    \t //Handler method for displaying new contact form: 
 
\t @RequestMapping(value = "/newContact", method = RequestMethod.GET) 
 
\t public ModelAndView newContact(ModelAndView model) { 
 
\t  Contact newContact = new Contact(); 
 
\t  model.addObject("contact", newContact); 
 
\t  model.setViewName("ContactForm"); 
 
\t  return model; 
 
\t } 
 
\t 
 
\t //Handler method for inserting/updating a contact: 
 
\t @RequestMapping(value = "/saveContact", method = RequestMethod.POST) 
 
\t public ModelAndView saveContact(@ModelAttribute Contact contact) 
 
\t { 
 
\t contactDao.saveOrUpdate(contact); 
 
\t return new ModelAndView("redirect:/"); 
 
\t } 
 
\t \t 
 
\t //Handler method for retrieving details of a particular contact for editing: 
 
\t @RequestMapping(value = "/editContact", method = RequestMethod.GET) 
 
\t public ModelAndView editContact(HttpServletRequest request) { 
 
\t  int contactId = Integer.parseInt(request.getParameter("id")); 
 
\t  Contact contact = contactDao.get(contactId); 
 
\t  ModelAndView model = new ModelAndView("ContactForm"); 
 
\t  model.addObject("contact", contact); 
 
\t  return model; 
 
\t } 
 
}

MVCConfiguration

package com.varun.contact.config; 
 

 
@Configuration 
 
@ComponentScan(basePackages="com.varun.contact") 
 
@EnableWebMvc 
 
@Repository 
 
public class MvcConfiguration extends WebMvcConfigurerAdapter { 
 
\t 
 
\t @Bean 
 
\t public ViewResolver getViewResolver(){ 
 
\t \t InternalResourceViewResolver resolver = new InternalResourceViewResolver(); 
 
\t \t resolver.setPrefix("/WEB-INF/views/"); 
 
\t \t resolver.setSuffix(".jsp"); 
 
\t  return resolver; 
 
\t } 
 
\t 
 
\t @Override 
 
    public void addResourceHandlers(ResourceHandlerRegistry registry) { 
 
     registry.addResourceHandler("/resources/**").addResourceLocations("/resources/"); 
 
    } 
 
\t 
 
\t @Bean 
 
\t  public DataSource getDataSource() { 
 
\t   DriverManagerDataSource dataSource = new DriverManagerDataSource(); 
 
\t   dataSource.setDriverClassName("oracle.jdbc.driver.OracleDriver"); 
 
\t   dataSource.setUrl("jdbc:oracle:thin:@localhost:1521:orcl"); 
 
\t   dataSource.setUsername("system"); 
 
\t   dataSource.setPassword("admin"); 
 
\t   return (DataSource) dataSource; 
 
\t  } 
 

 
\t @Bean 
 
\t  public ContactDao getContactDao() { 
 
\t   return new ContactDAOImpl(getDataSource()); 
 
\t  } 
 
}

ContactForm.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8" 
 
    pageEncoding="UTF-8"%> 
 
<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form"%> 
 
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" 
 
    "http://www.w3.org/TR/html4/loose.dtd"> 
 
<html> 
 
<head> 
 
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 
 
<title>New/Edit Contact</title> 
 
</head> 
 
<body> 
 
    <div align="center"> 
 
     <h1>New/Edit Contact</h1> 
 
     <form:form action="saveContact" method="post" modelAttribute="contact"> 
 
     <table> 
 
      <tr> 
 
       <td>Id:</td> 
 
       <td><form:input path="id" /></td> 
 
      </tr> 
 
      <tr> 
 
       <td>Name:</td> 
 
       <td><form:input path="name" /></td> 
 
      </tr> 
 
      <tr> 
 
       <td>Email:</td> 
 
       <td><form:input path="email" /></td> 
 
      </tr> 
 
      <tr> 
 
       <td>Address:</td> 
 
       <td><form:input path="address" /></td> 
 
      </tr> 
 
      <tr> 
 
       <td>Telephone:</td> 
 
       <td><form:input path="telephone" /></td> 
 
      </tr> 
 
      <tr> 
 
       <td colspan="2" align="center"><input type="submit" value="Save"></td> 
 
      </tr> 
 
     </table> 
 
     </form:form> 
 
    </div> 
 
</body> 
 
</html>

回到Home.jsp

<%@page contentType="text/html" pageEncoding="UTF-8"%> 
 
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %> 
 
<%@ page session="false" %> 
 
<html> 
 
<head> 
 
\t <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 
 
     <title>Contact Manager Home</title> 
 
</head> 
 
<body> 
 

 
<h1> 
 
\t Welcome.............................. 
 
</h1> 
 
<P> The time on the server is ${serverTime}. </P> 
 

 

 
<div align="center"> 
 
<h1>Contact List</h1> 
 
<h3><a href="/newContact">New Contact</a></h3> 
 
      <table border="1"> 
 
       <th>No</th> 
 
       <th>Name</th> 
 
       <th>Email</th> 
 
       <th>Address</th> 
 
       <th>Telephone</th> 
 
       <th>Action</th> 
 
        
 
       <c:forEach var="contact" items="${listContact}" varStatus="status"> 
 
       <tr> 
 
        <td>${status.index + 1}</td> 
 
        <td>${contact.name}</td> 
 
        <td>${contact.email}</td> 
 
        <td>${contact.address}</td> 
 
        <td>${contact.telephone}</td> 
 
        <td> 
 
         <a href="/editContact?id=${contact.id}">Edit</a> 
 
         &nbsp;&nbsp;&nbsp;&nbsp; 
 
         <a href="/deleteContact?id=${contact.id}">Delete</a> 
 
        </td> 
 
           
 
       </tr> 
 
     </c:forEach>    
 
    </table> 
 
</div> 
 
</body> 
 
</html>

網絡。XML

<?xml version="1.0" encoding="UTF-8"?> 
 
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" 
 
\t xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
 
\t xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"> 
 

 
\t <!-- The definition of the Root Spring Container shared by all Servlets and Filters --> 
 
\t <welcome-file-list> 
 
\t <welcome-file>ContactForm.jsp</welcome-file> 
 
\t </welcome-file-list> 
 
\t 
 
\t 
 
\t <context-param> 
 
\t \t <param-name>contextConfigLocation</param-name> 
 
\t \t <param-value>/WEB-INF/spring/servlet-context.xml</param-value> 
 
\t </context-param> 
 
\t 
 
\t <!-- Creates the Spring Container shared by all Servlets and Filters --> 
 
\t <listener> 
 
\t \t <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> 
 
\t </listener> 
 

 
\t <!-- Processes application requests --> 
 
\t <servlet> 
 
\t \t <servlet-name>DispatcherServlet</servlet-name> 
 
\t \t <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> 
 
\t \t <init-param> 
 
\t \t \t <param-name>contextConfigLocation</param-name> 
 
\t \t \t <param-value>/WEB-INF/spring/servlet-context.xml</param-value> 
 
\t \t </init-param> 
 
\t \t <load-on-startup>1</load-on-startup> 
 
\t </servlet> 
 
\t \t 
 
\t <servlet-mapping> 
 
\t \t <servlet-name>DispatcherServlet</servlet-name> 
 
\t \t <url-pattern>/</url-pattern> 
 
\t </servlet-mapping> 
 
\t 
 
\t <listener> 
 
    \t \t <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> 
 
\t </listener> 
 

 
</web-app>

請幫我我真的無法理解什麼是錯的這個

來源

2015-05-26 Varun

如果沒有添加 –

貌似控制器注入的ContactDAO的問題。

標記您有@Repository註解ContactDAOImpl，並檢查其中ContactDAOImpl位於包括在你的配置

來源

2015-05-26 09:09:44 StanislavL

做了同樣的事情，但我仍然遇到同樣的問題 – Varun

你需要告訴春天從哪個位置拿起豆的scan包。要做到這一點：

標註ContactDAOImpl與@Repository

在你的XML配置添加一行：

<context:component-scan base-package="dao packagename" />

通過這樣做，你指的位置，豆需求哪裏從中撿起來。

來源

2015-08-05 16:41:28 Lokesh

org.springframework.beans.factory.BeanCreationException：創建名爲'homeController'的bean時出錯：注入自動裝配依賴失敗;

回答

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