title: About the JavaWeb project server normal start, but not normal access to the project
body: <p>There is a small web program source code, there is no problem because in my classmates tested on the machine can run up, but my own environment Tomcat server running after the error can only access localhost8080 cannot access to the project page, display 404. also tried to compile the project manual posted to the webapps start, but still unable to access to the project. Then I've reconfigured the whole environment of the Myeclipse+tomcat. It's useless for several times, that is, myeclispe has been reloaded, and Tomcat has changed a few. So what could be the problem? Here is the server log after startup:  ``</p>
  
  <pre><code>  五月 31, 2017 9:28:03 上午 org.apache.catalina.startup.VersionLoggerListener log
  信息: Server version: Apache Tomcat/7.0.78
  五月 31, 2017 9:28:03 上午 org.apache.catalina.startup.VersionLoggerListener log
  信息: Server built: May 10 2017 15:02:19 UTC
  五月 31, 2017 9:28:03 上午 org.apache.catalina.startup.VersionLoggerListener log
  信息: Server number: 7.0.78.0
  五月 31, 2017 9:28:03 上午 org.apache.catalina.startup.VersionLoggerListener log
  信息: OS Name: Windows 7
  五月 31, 2017 9:28:03 上午 org.apache.catalina.startup.VersionLoggerListener log
  信息: OS Version: 6.1
  五月 31, 2017 9:28:03 上午 org.apache.catalina.startup.VersionLoggerListener log
  信息: Architecture: amd64
  五月 31, 2017 9:28:03 上午 org.apache.catalina.startup.VersionLoggerListener log
  信息: Java Home: D:Javajdk1.8jre
  五月 31, 2017 9:28:03 上午 org.apache.catalina.startup.VersionLoggerListener log
  信息: JVM Version: 1.8.0_102-b14
  五月 31, 2017 9:28:03 上午 org.apache.catalina.startup.VersionLoggerListener log
  信息: JVM Vendor: Oracle Corporation
  五月 31, 2017 9:28:03 上午 org.apache.catalina.startup.VersionLoggerListener log
  信息: CATALINA_BASE: D:apache-tomcat-7.0.78
  五月 31, 2017 9:28:03 上午 org.apache.catalina.startup.VersionLoggerListener log
  信息: CATALINA_HOME: D:apache-tomcat-7.0.78
  五月 31, 2017 9:28:03 上午 org.apache.catalina.startup.VersionLoggerListener log
  信息: Command line argument: -Dcatalina.home=D:apache-tomcat-7.0.78
  五月 31, 2017 9:28:03 上午 org.apache.catalina.startup.VersionLoggerListener log
  信息: Command line argument: -Dcatalina.base=D:apache-tomcat-7.0.78
  五月 31, 2017 9:28:03 上午 org.apache.catalina.startup.VersionLoggerListener log
  信息: Command line argument: -Djava.endorsed.dirs=D:apache-tomcat-7.0.78/common/endorsed
  五月 31, 2017 9:28:03 上午 org.apache.catalina.startup.VersionLoggerListener log
  信息: Command line argument: -Djava.io.tmpdir=D:apache-tomcat-7.0.78temp
  五月 31, 2017 9:28:03 上午 org.apache.catalina.startup.VersionLoggerListener log
  信息: Command line argument: -Djava.library.path=D:Javajdk1.8bin;D:apache-tomcat-7.0.78bin
  五月 31, 2017 9:28:03 上午 org.apache.catalina.startup.VersionLoggerListener log
  信息: Command line argument: -Dsun.io.useCanonCaches=false
  五月 31, 2017 9:28:03 上午 org.apache.catalina.core.AprLifecycleListener lifecycleEvent
  信息: Loaded APR based Apache Tomcat Native library 1.2.12 using APR version 1.5.2.
  五月 31, 2017 9:28:03 上午 org.apache.catalina.core.AprLifecycleListener lifecycleEvent
  信息: APR capabilities: IPv6 [true], sendfile [true], accept filters [false], random [true].
  五月 31, 2017 9:28:04 上午 org.apache.catalina.core.AprLifecycleListener initializeSSL
  信息: OpenSSL successfully initialized (OpenSSL 1.0.2k 26 Jan 2017)
  五月 31, 2017 9:28:07 上午 org.apache.coyote.AbstractProtocol init
  信息: Initializing ProtocolHandler ["http-apr-8080"]
  五月 31, 2017 9:28:07 上午 org.apache.coyote.AbstractProtocol init
  信息: Initializing ProtocolHandler ["ajp-apr-8009"]
  五月 31, 2017 9:28:07 上午 org.apache.catalina.startup.Catalina load
  信息: Initialization processed in 6195 ms
  五月 31, 2017 9:28:07 上午 org.apache.catalina.core.StandardService startInternal
  信息: Starting service Catalina
  五月 31, 2017 9:28:07 上午 org.apache.catalina.core.StandardEngine startInternal
  信息: Starting Servlet Engine: Apache Tomcat/7.0.78
  五月 31, 2017 9:28:07 上午 org.apache.catalina.startup.HostConfig deployDirectory
  信息: Deploying web application directory D:apache-tomcat-7.0.78webappsdocs
  五月 31, 2017 9:28:08 上午 org.apache.catalina.util.SessionIdGeneratorBase createSecureRandom
  信息: Creation of SecureRandom instance for session ID generation using [SHA1PRNG] took [765] milliseconds.
  五月 31, 2017 9:28:08 上午 org.apache.catalina.startup.HostConfig deployDirectory
  信息: Deployment of web application directory D:apache-tomcat-7.0.78webappsdocs has finished in 1,310 ms
  五月 31, 2017 9:28:08 上午 org.apache.catalina.startup.HostConfig deployDirectory
  信息: Deploying web application directory D:apache-tomcat-7.0.78webappsexamples
  五月 31, 2017 9:28:09 上午 org.apache.catalina.core.ApplicationContext log
  信息: ContextListener: contextInitialized()
  五月 31, 2017 9:28:09 上午 org.apache.catalina.core.ApplicationContext log
  信息: SessionListener: contextInitialized()
  五月 31, 2017 9:28:09 上午 org.apache.catalina.core.ApplicationContext log
  信息: ContextListener: attributeAdded('org.apache.jasper.compiler.TldLocationsCache', 'org.apache.jasper.compiler.TldLocationsCache@29107c23')
  五月 31, 2017 9:28:09 上午 org.apache.catalina.startup.HostConfig deployDirectory
  信息: Deployment of web application directory D:apache-tomcat-7.0.78webappsexamples has finished in 781 ms
  五月 31, 2017 9:28:09 上午 org.apache.catalina.startup.HostConfig deployDirectory
  信息: Deploying web application directory D:apache-tomcat-7.0.78webappshost-manager
  五月 31, 2017 9:28:09 上午 org.apache.catalina.startup.HostConfig deployDirectory
  信息: Deployment of web application directory D:apache-tomcat-7.0.78webappshost-manager has finished in 93 ms
  五月 31, 2017 9:28:09 上午 org.apache.catalina.startup.HostConfig deployDirectory
  信息: Deploying web application directory D:apache-tomcat-7.0.78webappsmanager
  五月 31, 2017 9:28:09 上午 org.apache.catalina.startup.HostConfig deployDirectory
  信息: Deployment of web application directory D:apache-tomcat-7.0.78webappsmanager has finished in 78 ms
  五月 31, 2017 9:28:09 上午 org.apache.catalina.startup.HostConfig deployDirectory
  信息: Deploying web application directory D:apache-tomcat-7.0.78webappsROOT
  五月 31, 2017 9:28:09 上午 org.apache.catalina.startup.HostConfig deployDirectory
  信息: Deployment of web application directory D:apache-tomcat-7.0.78webappsROOT has finished in 94 ms
  五月 31, 2017 9:28:09 上午 org.apache.catalina.startup.HostConfig deployDirectory
  信息: Deploying web application directory D:apache-tomcat-7.0.78webappsTax
  五月 31, 2017 9:28:11 上午 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.
  五月 31, 2017 9:28:11 上午 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.
  五月 31, 2017 9:28:14 上午 org.apache.catalina.startup.HostConfig deployDirectory
  信息: Deployment of web application directory D:apache-tomcat-7.0.78webappsTax has finished in 4,543 ms
  五月 31, 2017 9:28:14 上午 org.apache.coyote.AbstractProtocol start
  信息: Starting ProtocolHandler ["http-apr-8080"]
  五月 31, 2017 9:28:14 上午 org.apache.coyote.AbstractProtocol start
  信息: Starting ProtocolHandler ["ajp-apr-8009"]
  五月 31, 2017 9:28:14 上午 org.apache.catalina.startup.Catalina start
  信息: Server startup in 7174 ms
  </code></pre>