BeanCreationException NoSuchBeanDefinitionException同时启动谷歌应用程序服务器下面春代码

Question

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'testController': Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type [clinic.ict.service.TestService] 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), @javax.annotation.Resource(shareable=true, mappedName=, description=, name=, type=class java.lang.Object, authenticationType=CONTAINER)} 
    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessPropertyValues(CommonAnnotationBeanPostProcessor.java:300) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1055) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:511) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:450) 
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:290) 
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) 
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:287) 
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:189) 
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:562) 
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:871) 
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:423) 
    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:443) 
    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:459) 
    at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:340) 
    at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:307) 
    at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:127) 
    at javax.servlet.GenericServlet.init(GenericServlet.java:215) 
    at org.mortbay.jetty.servlet.ServletHolder.initServlet(ServletHolder.java:440) 
    at org.mortbay.jetty.servlet.ServletHolder.doStart(ServletHolder.java:263) 
    at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50) 
    at org.mortbay.jetty.servlet.ServletHandler.initialize(ServletHandler.java:685) 
    at org.mortbay.jetty.servlet.Context.startContext(Context.java:140) 
    at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1250) 
    at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:517) 
    at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:467) 
    at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50) 
    at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130) 
    at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50) 
    at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130) 
    at org.mortbay.jetty.Server.doStart(Server.java:224) 
    at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50) 
    at com.google.appengine.tools.development.JettyContainerService.startContainer(JettyContainerService.java:185) 
    at com.google.appengine.tools.development.AbstractContainerService.startup(AbstractContainerService.java:146) 
    at com.google.appengine.tools.development.DevAppServerImpl.start(DevAppServerImpl.java:222) 
    at com.google.appengine.tools.development.DevAppServerMain$StartAction.apply(DevAppServerMain.java:171) 
    at com.google.appengine.tools.util.Parser$ParseResult.applyArgs(Parser.java:48) 
    at com.google.appengine.tools.development.DevAppServerMain.<init>(DevAppServerMain.java:120) 
    at com.google.appengine.tools.development.DevAppServerMain.main(DevAppServerMain.java:96) 
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type [clinic.ict.service.TestService] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true), @javax.annotation.Resource(shareable=true, mappedName=, description=, name=, type=class java.lang.Object, authenticationType=CONTAINER)} 
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException(DefaultListableBeanFactory.java:901) 
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:770) 
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:685) 
    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.autowireResource(CommonAnnotationBeanPostProcessor.java:431) 
    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.getResource(CommonAnnotationBeanPostProcessor.java:409) 
    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor$ResourceElement.getResourceToInject(CommonAnnotationBeanPostProcessor.java:541) 
    at org.springframework.beans.factory.annotation.InjectionMetadata$InjectedElement.inject(InjectionMetadata.java:147) 
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:84) 
    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessPropertyValues(CommonAnnotationBeanPostProcessor.java:297) 
    ... 37 more 

下面的代码：

TestController.java

package clinic.ict.controller; 

import javax.annotation.Resource; 
import javax.servlet.http.HttpServletRequest; 
import javax.servlet.http.HttpServletResponse; 
import org.springframework.beans.factory.annotation.Autowired; 
import org.springframework.stereotype.Controller; 
import org.springframework.web.bind.annotation.PathVariable; 
import org.springframework.web.bind.annotation.RequestMapping; 
import org.springframework.web.bind.annotation.RequestMethod; 
import org.springframework.web.servlet.ModelAndView; 
import clinic.ict.service.TestService; 

@Controller 
public class TestController { 

    @Autowired 
    @Resource 
    private TestService testService; 

    public TestService getTestService() { 
     return testService; 
    } 

    public void setTestService(TestService testService) { 
     this.testService = testService; 
    } 

    @RequestMapping(method=RequestMethod.GET,value="/clinic/{code}") 
    public ModelAndView displayData(HttpServletRequest request, HttpServletResponse response,@PathVariable("code") String clinicCode){ 
     String returnedService = testService.getSomeServiceHere(clinicCode); 
     return new ModelAndView("Test", "argx", returnedService); 
    } 
} 

TestService.java

package clinic.ict.service; 

import org.springframework.stereotype.Service; 

@Service 
public interface TestService { 
    public String getSomeServiceHere(String clinicCode); 
} 

TestServiceImpl.java

package clinic.ict.serviceimpl; 

import org.springframework.stereotype.Service; 

import clinic.ict.service.TestService; 

@Service 
public class TestServiceImpl implements TestService{ 

    @Override 
    public String getSomeServiceHere(String clinicCode){ 
     return ("Returned Service to clinic "+clinicCode); 
    } 
} 

dispatcher-servlet.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:jdbc="http://www.springframework.org/schema/jdbc" xmlns:jee="http://www.springframework.org/schema/jee" 
    xmlns:p="http://www.springframework.org/schema/p" xmlns:tx="http://www.springframework.org/schema/tx" 
    xmlns:util="http://www.springframework.org/schema/util" xmlns:aop="http://www.springframework.org/schema/aop" 
    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/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.0.xsd 
     http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-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 
     http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.0.xsd"> 


    <context:annotation-config /> 

    <context:component-scan base-package="clinic.ict.controller"> 
     <context:include-filter type="annotation" 
      expression="org.springframework.stereotype.Controller" /> 
    </context:component-scan> 

    <context:component-scan base-package="clinic.ict.service"> 
     <context:include-filter type="annotation" 
      expression="org.springframework.stereotype.Service" /> 
    </context:component-scan> 

    <bean id="viewResolver" 
     class="org.springframework.web.servlet.view.InternalResourceViewResolver"> 
     <property name="viewClass" 
      value="org.springframework.web.servlet.view.JstlView" /> 
     <property name="prefix" value="/WEB-INF/views/" /> 
     <property name="suffix" value=".jsp" /> 
    </bean> 

    <bean id="messageSource" 
     class="org.springframework.context.support.ResourceBundleMessageSource"> 
     <property name="basename" value="messages" /> 
    </bean> 
</beans> 

Answer 1

您在类路径扫描的service包，但你TestService接口的实现实际上是在serviceimpl包。

clinic.ict.serviceimpl不是儿童包clinic.ict.service;他们只是碰巧分享了一个前缀。因此serviceimpl包不会被扫描，所以Spring不会自动为你实例化TestServiceImpl bean。