tomcat启动不了项目显示404我要把cboard整个文件夹都移动到webapps下了但是启动不了报错日志如下16-Nov-201813:43:34.772严重[localhost-startStop-1]org.apache.catalina.core.StandardContext.listenerStartExceptionsendingcontextinitializedeventtolistenerinstanceofclass[org.springframework.web.context.ContextLoaderListener]org.springframework.beans.factory.UnsatisfiedDependencyException:Errorcreatingbeanwithname'dashboardController':Unsatisfieddependencyexpressedthroughfield'jobService';nestedexceptionisorg.springframework.beans.factory.UnsatisfiedDependencyException:Errorcreatingbeanwithname'jobService':Unsatisfieddependencyexpressedthroughfield'mailService';nestedexceptionisorg.springframework.beans.factory.BeanCreationException:Errorcreatingbeanwithname'mailService':Injectionofautowireddependenciesfailed;nestedexceptionisjava.lang.IllegalArgumentException:Couldnotresolveplaceholder'mail.smtp.host'invalue"${mail.smtp.host}"atorg.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:588)atorg.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)atorg.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:366)atorg.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1264)atorg.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:553)atorg.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483)atorg.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)atorg.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)atorg.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)atorg.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)atorg.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:761)atorg.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:866)atorg.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:542)atorg.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:443)atorg.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:325)atorg.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:107)atorg.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4792)atorg.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5256)atorg.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)atorg.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:754)atorg.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:730)atorg.apache.catalina.core.StandardHost.addChild(StandardHost.java:734)atorg.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1140)atorg.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1875)atjava.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)atjava.util.concurrent.FutureTask.run(FutureTask.java:266)atjava.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)atjava.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)atjava.lang.Thread.run(Thread.java:748)Causedby:org.springframework.beans.factory.UnsatisfiedDependencyException:Errorcreatingbeanwithname'jobService':Unsatisfieddependencyexpressedthroughfield'mailService';nestedexceptionisorg.springframework.beans.factory.BeanCreationException:Errorcreatingbeanwithname'mailService':Injectionofautowireddependenciesfailed;nestedexceptionisjava.lang.IllegalArgumentException:Couldnotresolveplaceholder'mail.smtp.host'invalue"${mail.smtp.host}"atorg.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:588)atorg.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)atorg.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:366)atorg.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1264)atorg.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:553)atorg.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483)atorg.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)atorg.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)atorg.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)atorg.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)atorg.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:208)atorg.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1138)atorg.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1066)atorg.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:585)...28moreCausedby:org.springframework.beans.factory.BeanCreationException:Errorcreatingbeanwithname'mailService':Injectionofautowireddependenciesfailed;nestedexceptionisjava.lang.IllegalArgumentException:Couldnotresolveplaceholder'mail.smtp.host'invalue"${mail.smtp.host}"atorg.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:372)atorg.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1264)atorg.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:553)atorg.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483)atorg.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)atorg.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)atorg.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)atorg.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)atorg.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:208)atorg.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1138)atorg.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1066)atorg.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:585)...41moreCausedby:java.lang.IllegalArgumentException:Couldnotresolveplaceholder'mail.smtp.host'invalue"${mail.smtp.host}"atorg.springframework.util.PropertyPlaceholderHelper.parseStringValue(PropertyPlaceholderHelper.java:174)atorg.springframework.util.PropertyPlaceholderHelper.replacePlaceholders(PropertyPlaceholderHelper.java:126)atorg.springframework.beans.factory.config.PropertyPlaceholderConfigurer$PlaceholderResolvingStringValueResolver.resolveStringValue(PropertyPlaceholderConfigurer.java:258)atorg.springframework.beans.factory.support.AbstractBeanFactory.resolveEmbeddedValue(AbstractBeanFactory.java:831)atorg.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1086)atorg.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1066)atorg.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:585)atorg.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)atorg.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:366)...52more问题描述问题出现的环境背景及自己尝试过哪些方法相关代码//请把代码文本粘贴到下方（请勿用图片代替代码）你期待的结果是什么？实际看到的错误信息又是什么？
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