Maven项目启动报错

错误信息如下：

六月 11, 2018 1:58:35 下午 org.apache.tomcat.util.digester.SetPropertiesRule begin
警告: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.jee.server:rtda' did not find a matching property.
六月 11, 2018 1:58:35 下午 org.apache.catalina.startup.VersionLoggerListener log
信息: Server version:        Apache Tomcat/7.0.88
六月 11, 2018 1:58:35 下午 org.apache.catalina.startup.VersionLoggerListener log
信息: Server built:          May 7 2018 11:12:57 UTC
六月 11, 2018 1:58:35 下午 org.apache.catalina.startup.VersionLoggerListener log
信息: Server number:         7.0.88.0
六月 11, 2018 1:58:35 下午 org.apache.catalina.startup.VersionLoggerListener log
信息: OS Name:               Windows 7
六月 11, 2018 1:58:35 下午 org.apache.catalina.startup.VersionLoggerListener log
信息: OS Version:            6.1
六月 11, 2018 1:58:35 下午 org.apache.catalina.startup.VersionLoggerListener log
信息: Architecture:          amd64
六月 11, 2018 1:58:35 下午 org.apache.catalina.startup.VersionLoggerListener log
信息: Java Home:             D:\Program Files\Java\jdk1.7.0_80\jre
六月 11, 2018 1:58:35 下午 org.apache.catalina.startup.VersionLoggerListener log
信息: JVM Version:           1.7.0_80-b15
六月 11, 2018 1:58:35 下午 org.apache.catalina.startup.VersionLoggerListener log
信息: JVM Vendor:            Oracle Corporation
六月 11, 2018 1:58:35 下午 org.apache.catalina.startup.VersionLoggerListener log
信息: CATALINA_BASE:         D:\tomcat\apache-tomcat-7.0.88
六月 11, 2018 1:58:35 下午 org.apache.catalina.startup.VersionLoggerListener log
信息: CATALINA_HOME:         D:\tomcat\apache-tomcat-7.0.88
六月 11, 2018 1:58:35 下午 org.apache.catalina.startup.VersionLoggerListener log
信息: Command line argument: -agentlib:jdwp=transport=dt_socket,suspend=y,address=localhost:53060
六月 11, 2018 1:58:35 下午 org.apache.catalina.startup.VersionLoggerListener log
信息: Command line argument: -Dcatalina.base=D:\tomcat\apache-tomcat-7.0.88
六月 11, 2018 1:58:35 下午 org.apache.catalina.startup.VersionLoggerListener log
信息: Command line argument: -Dcatalina.home=D:\tomcat\apache-tomcat-7.0.88
六月 11, 2018 1:58:35 下午 org.apache.catalina.startup.VersionLoggerListener log
信息: Command line argument: -Dwtp.deploy=D:\tomcat\apache-tomcat-7.0.88\webapps
六月 11, 2018 1:58:35 下午 org.apache.catalina.startup.VersionLoggerListener log
信息: Command line argument: -Djava.endorsed.dirs=D:\tomcat\apache-tomcat-7.0.88\endorsed
六月 11, 2018 1:58:35 下午 org.apache.catalina.startup.VersionLoggerListener log
信息: Command line argument: -Dfile.encoding=UTF-8
六月 11, 2018 1:58:35 下午 org.apache.catalina.core.AprLifecycleListener lifecycleEvent
信息: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: D:\Program Files\Java\jdk1.7.0_80\bin;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;D:\Program Files\Java\jdk1.7.0_80\jre\bin;D:/Program Files/Java/jdk1.7.0_80/bin/../jre/bin/server;D:/Program Files/Java/jdk1.7.0_80/bin/../jre/bin;D:/Program Files/Java/jdk1.7.0_80/bin/../jre/lib/amd64;D:\maven\apache-maven-3.5.0\bin;D:\Program Files\Java\jdk1.7.0_80\bin;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;D:\Program Files\TortoiseSVN\bin;C:\Program Files (x86)\MySQL\MySQL Server 5.5\bin;D:\IDE\eclipse;;.
六月 11, 2018 1:58:35 下午 org.apache.coyote.AbstractProtocol init
信息: Initializing ProtocolHandler ["http-bio-8080"]
六月 11, 2018 1:58:35 下午 org.apache.coyote.AbstractProtocol init
信息: Initializing ProtocolHandler ["ajp-bio-8009"]
六月 11, 2018 1:58:35 下午 org.apache.catalina.startup.Catalina load
信息: Initialization processed in 847 ms
六月 11, 2018 1:58:35 下午 org.apache.catalina.core.StandardService startInternal
信息: Starting service Catalina
六月 11, 2018 1:58:35 下午 org.apache.catalina.core.StandardEngine startInternal
信息: Starting Servlet Engine: Apache Tomcat/7.0.88
六月 11, 2018 1:58:37 下午 org.apache.catalina.startup.TldConfig execute
信息: At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
六月 11, 2018 1:58:37 下午 org.apache.catalina.core.ApplicationContext log
信息: No Spring WebApplicationInitializer types detected on classpath
六月 11, 2018 1:58:37 下午 org.apache.catalina.core.ApplicationContext log
信息: Set web app root system property: 'webapp.root' = [D:\tomcat\apache-tomcat-7.0.88\webapps\rtda\]
六月 11, 2018 1:58:37 下午 org.apache.catalina.core.ApplicationContext log
信息: Initializing log4j from [classpath:log4j.xml]
六月 11, 2018 1:58:37 下午 org.apache.catalina.core.StandardContext listenerStart
严重: Exception sending context initialized event to listener instance of class org.springframework.web.util.Log4jConfigListener
java.lang.IllegalArgumentException: Invalid 'log4jConfigLocation' parameter: class path resource [log4j.xml] cannot be resolved to URL because it does not exist
    at org.springframework.web.util.Log4jWebConfigurer.initLogging(Log4jWebConfigurer.java:155)
    at org.springframework.web.util.Log4jConfigListener.contextInitialized(Log4jConfigListener.java:45)
    at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:5157)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5680)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1702)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1692)
    at java.util.concurrent.FutureTask.run(FutureTask.java:262)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:745)

六月 11, 2018 1:58:37 下午 org.apache.catalina.core.ApplicationContext log
信息: Initializing Spring root WebApplicationContext
log4j:WARN No appenders could be found for logger (org.springframework.web.context.ContextLoader).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
六月 11, 2018 1:58:39 下午 org.apache.catalina.core.StandardContext listenerStart
严重: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener
org.springframework.beans.factory.BeanDefinitionStoreException: Invalid bean definition with name 'dataSource' defined in class path resource [spring/applicationContext.xml]: Could not resolve placeholder 'dbcp.driver'
    at org.springframework.beans.factory.config.PlaceholderConfigurerSupport.doProcessProperties(PlaceholderConfigurerSupport.java:209)
    at org.springframework.beans.factory.config.PropertyPlaceholderConfigurer.processProperties(PropertyPlaceholderConfigurer.java:220)
    at org.springframework.beans.factory.config.PropertyResourceConfigurer.postProcessBeanFactory(PropertyResourceConfigurer.java:84)
    at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:681)
    at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:656)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:446)
    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:5157)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5680)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1702)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1692)
    at java.util.concurrent.FutureTask.run(FutureTask.java:262)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:745)

六月 11, 2018 1:58:39 下午 org.apache.catalina.core.StandardContext startInternal
严重: One or more listeners failed to start. Full details will be found in the appropriate container log file
六月 11, 2018 1:58:39 下午 org.apache.catalina.util.SessionIdGeneratorBase createSecureRandom
警告: Creation of SecureRandom instance for session ID generation using [SHA1PRNG] took [105] milliseconds.
六月 11, 2018 1:58:39 下午 org.apache.catalina.core.StandardContext startInternal
严重: Context [/rtda] startup failed due to previous errors
六月 11, 2018 1:58:39 下午 org.apache.catalina.core.ApplicationContext log
信息: Closing Spring root WebApplicationContext
六月 11, 2018 1:58:39 下午 org.apache.catalina.core.ApplicationContext log
信息: Shutting down log4j
六月 11, 2018 1:58:39 下午 org.apache.catalina.startup.HostConfig deployDirectory
信息: Deploying web application directory D:\tomcat\apache-tomcat-7.0.88\webapps\docs
六月 11, 2018 1:58:39 下午 org.apache.catalina.startup.HostConfig deployDirectory
信息: Deployment of web application directory D:\tomcat\apache-tomcat-7.0.88\webapps\docs has finished in 86 ms
六月 11, 2018 1:58:39 下午 org.apache.catalina.startup.HostConfig deployDirectory
信息: Deploying web application directory D:\tomcat\apache-tomcat-7.0.88\webapps\examples
六月 11, 2018 1:58:39 下午 org.apache.catalina.core.ApplicationContext log
信息: ContextListener: contextInitialized()
六月 11, 2018 1:58:39 下午 org.apache.catalina.core.ApplicationContext log
信息: SessionListener: contextInitialized()
六月 11, 2018 1:58:39 下午 org.apache.catalina.core.ApplicationContext log
信息: ContextListener: attributeAdded('StockTicker', 'async.Stockticker@4984fd2f')
六月 11, 2018 1:58:39 下午 org.apache.catalina.core.ApplicationContext log
信息: ContextListener: attributeAdded('org.apache.jasper.compiler.TldLocationsCache', 'org.apache.jasper.compiler.TldLocationsCache@34ed0665')
六月 11, 2018 1:58:39 下午 org.apache.catalina.startup.HostConfig deployDirectory
信息: Deployment of web application directory D:\tomcat\apache-tomcat-7.0.88\webapps\examples has finished in 338 ms
六月 11, 2018 1:58:39 下午 org.apache.catalina.startup.HostConfig deployDirectory
信息: Deploying web application directory D:\tomcat\apache-tomcat-7.0.88\webapps\host-manager
六月 11, 2018 1:58:40 下午 org.apache.catalina.startup.HostConfig deployDirectory
信息: Deployment of web application directory D:\tomcat\apache-tomcat-7.0.88\webapps\host-manager has finished in 154 ms
六月 11, 2018 1:58:40 下午 org.apache.catalina.startup.HostConfig deployDirectory
信息: Deploying web application directory D:\tomcat\apache-tomcat-7.0.88\webapps\manager
六月 11, 2018 1:58:40 下午 org.apache.catalina.startup.HostConfig deployDirectory
信息: Deployment of web application directory D:\tomcat\apache-tomcat-7.0.88\webapps\manager has finished in 77 ms
六月 11, 2018 1:58:40 下午 org.apache.catalina.startup.HostConfig deployDirectory
信息: Deploying web application directory D:\tomcat\apache-tomcat-7.0.88\webapps\ROOT
六月 11, 2018 1:58:40 下午 org.apache.catalina.startup.HostConfig deployDirectory
信息: Deployment of web application directory D:\tomcat\apache-tomcat-7.0.88\webapps\ROOT has finished in 67 ms
六月 11, 2018 1:58:40 下午 org.apache.coyote.AbstractProtocol start
信息: Starting ProtocolHandler ["http-bio-8080"]
六月 11, 2018 1:58:40 下午 org.apache.coyote.AbstractProtocol start
信息: Starting ProtocolHandler ["ajp-bio-8009"]
六月 11, 2018 1:58:40 下午 org.apache.catalina.startup.Catalina start
信息: Server startup in 4985 ms

问题描述：
以上信息是tomcat在启动项目的时候报的错误信息，发现没有找到配置文件，实际上配置文件在项目中是存在的，但是，在编译过程中，配置文件没有能加载到编译后的项目中。
就造成了，找不到这些怕配置文件。

解决方案：
1.在确定jdk和maven没有问题的时候，进行第二步操作；
2.选择项目，右键“Maven”,选择“Select Maven profiles”,勾选dev选项，点击：OK按钮