SSM时遇到的异常（2）——BeanCreationException: Error creating bean with name 'empController'

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本文针对使用SSM(Spring+SpringMVC+MyBatis)框架时遇到的StandardWrapper.Throwable与BeanCreationException异常进行深入分析，探讨了在web.xml配置正确前提下，XxxService未正确注解导致的问题，以及spring配置文件中context:component-scan标签的常见错误，并提供了相应的解决方案。

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JDK1.7+Tomcat7.0 +Eclipse+SSM

十二月 27, 2018 2:22:43 下午 org.apache.catalina.core.ApplicationContext log
严重: StandardWrapper.Throwable
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'empController': Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.qiu.service.EmpService] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@javax.annotation.Resource(type=class java.lang.Object, mappedName=, shareable=true, lookup=, authenticationType=CONTAINER, description=, name=)}
	at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessPropertyValues(CommonAnnotationBeanPostProcessor.java:308)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1202)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
	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 java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.qiu.service.EmpService] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@javax.annotation.Resource(type=class java.lang.Object, mappedName=, shareable=true, lookup=, authenticationType=CONTAINER, description=, name=)}
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException(DefaultListableBeanFactory.java:1301)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1047)
	... 29 more

十二月 27, 2018 2:22:43 下午 org.apache.catalina.core.StandardContext loadOnStartup
严重: Servlet /MVCQ threw load() exception
org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.qiu.service.EmpService] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@javax.annotation.Resource(type=class java.lang.Object, mappedName=, shareable=true, lookup=, authenticationType=CONTAINER, description=, name=)}
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException(DefaultListableBeanFactory.java:1301)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1047)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:942)
	at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.autowireResource(CommonAnnotationBeanPostProcessor.java:457)

一运行Tomcat站点就报错，

在使用SSM(Spring+Spring MVC+MyBatis)框架情况下、web.xml配置没有问题的情况下,发现：XxxService没有使用"注解",

改了之后,要在XxxController中加上注解@Resource，机器才能找到对应XxxService类

(一)以上这张或者(二)以下这张 [一样的效果吧,且都不会报异常]

还有另一种情况：发生在spring的配置文件问题（我的发生在“spring-service”配置文件的"context:component-scan"标签，若你发生的不是这个文件，请到其他的文件看看，确认下package路径有没有问题【spring-dao和spring-web】）:

对我的项目而言，应该是：

借鉴文章：

（1）、严重: StandardWrapper.Throwable

（2）、SpringMVC+Mybatis+Spring整合中org.springframework.beans.factory.BeanCreationException错误分析【发生在context:component-scan标签】

（3）、启动服务的时候，出现错误：StandardWrapper.Throwable

补充：Spring MVC参数的传递与接收

详细：出现org.springframework.beans.factory.NoSuchBeanDefinitionException 的解决思路

看也可能是spring配置文件的名字问题：报错：org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean nam