spring MVC项目启动报错

[懒得搭理你]

错误如下：

严重: StandardWrapper.Throwable
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'snt.paymsgexchange.web.controller.demo.TestJsonData#0': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private snt.common.dao.base.CommonDAO snt.paymsgexchange.web.controller.demo.TestJsonData.comdao; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type [snt.common.dao.base.CommonDAO] 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.Qualifier(value=commonDAO)}
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:286)
	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:160)
	at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1266)
	at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1185)
	at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1080)
	at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5015)
	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5302)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
	at org.apache.catalina.core.StandardContext.reload(StandardContext.java:3908)
	at org.apache.catalina.loader.WebappLoader.backgroundProcess(WebappLoader.java:426)
	at org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1350)
	at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1537)
	at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1547)
	at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1547)
	at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1526)
	at java.lang.Thread.run(Thread.java:619)

controller文件大概如下：

@Controller
@RequestMapping("/query")
public class TestJsonData {

	@Autowired
	@Qualifier("commonDAO")
	private CommonDAO comdao;
}

commonDAO是我在spring启动时的一个bean

<bean id="commonDAO" class="snt.common.dao.base.CommonDAO">
			</bean>

是不是配置顺序除了问题？

[ssdd273381952]

第一：你的service实现类是否已经用了@Service 第二：保证你的启动顺序正确，看样子你的spring配置文件没有在启动的时候加载进来。

<listener>
		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
	</listener>
	<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>
        	classpath*:ctxconf/applicationContext.xml
        </param-value>
	</context-param>

[lvzg_005]

<bean id="commonDAO" class="snt.common.dao.base.CommonDAO">             
	<qualifier value="commonDAO"/>
</bean>

这样改下配置试试

[海逸_2018]

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'snt.paymsgexchange.. 原因不是告诉你了么？

[懒得搭理你]

引用 2 楼 yulongde77 的回复:

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'snt.paymsgexchange.. 原因不是告诉你了么？

但是不应该存在这个问题的，我的bean id="commonDAO"顺序在 controller加载之前。

[懒得搭理你]

引用 1 楼 lvzg_005 的回复:

Java code ? 1234 <bean id="commonDAO" class="snt.common.dao.base.CommonDAO"> <qualifier value="commonDAO"/> </bean> 这样改下配置试试

这样改没有用