Servlet404问题

不知道是哪里出现问题了，运行的时候出现404错误

F:\apache-tomcat-8.5.43-windows-x64\apache-tomcat-8.5.43\bin\catalina.bat run
[2019-08-09 09:25:56,653] Artifact javaweb:war exploded: Waiting for server connection to start artifact deployment...
Using CATALINA_BASE:   "C:\Users\Cookiet\.IntelliJIdea2019.1\system\tomcat\Tomcat_8_5_43_javaweb"
Using CATALINA_HOME:   "F:\apache-tomcat-8.5.43-windows-x64\apache-tomcat-8.5.43"
Using CATALINA_TMPDIR: "F:\apache-tomcat-8.5.43-windows-x64\apache-tomcat-8.5.43\temp"
Using JRE_HOME:        "C:\Program Files\Java\jdk-12.0.1"
Using CLASSPATH:       "F:\apache-tomcat-8.5.43-windows-x64\apache-tomcat-8.5.43\bin\bootstrap.jar;F:\apache-tomcat-8.5.43-windows-x64\apache-tomcat-8.5.43\bin\tomcat-juli.jar"
NOTE: Picked up JDK_JAVA_OPTIONS:  --add-opens=java.base/java.lang=ALL-UNNAMED --add-opens=java.base/java.io=ALL-UNNAMED --add-opens=java.rmi/sun.rmi.transport=ALL-UNNAMED
Connected to the target VM, address: '127.0.0.1:59208', transport: 'socket'
Java HotSpot(TM) 64-Bit Server VM warning: Sharing is only supported for boot loader classes because bootstrap classpath has been appended
09-Aug-2019 21:25:58.254 淇℃伅 [main] org.apache.catalina.startup.VersionLoggerListener.log Server version:        Apache Tomcat/8.5.43
09-Aug-2019 21:25:58.257 淇℃伅 [main] org.apache.catalina.startup.VersionLoggerListener.log Server built:          Jul 4 2019 20:53:15 UTC
09-Aug-2019 21:25:58.257 淇℃伅 [main] org.apache.catalina.startup.VersionLoggerListener.log Server number:         8.5.43.0
09-Aug-2019 21:25:58.258 淇℃伅 [main] org.apache.catalina.startup.VersionLoggerListener.log OS Name:               Windows 10
09-Aug-2019 21:25:58.258 淇℃伅 [main] org.apache.catalina.startup.VersionLoggerListener.log OS Version:            10.0
09-Aug-2019 21:25:58.258 淇℃伅 [main] org.apache.catalina.startup.VersionLoggerListener.log Architecture:          amd64
09-Aug-2019 21:25:58.258 淇℃伅 [main] org.apache.catalina.startup.VersionLoggerListener.log Java Home:             C:\Program Files\Java\jdk-12.0.1
09-Aug-2019 21:25:58.258 淇℃伅 [main] org.apache.catalina.startup.VersionLoggerListener.log JVM Version:           12.0.1+12
09-Aug-2019 21:25:58.259 淇℃伅 [main] org.apache.catalina.startup.VersionLoggerListener.log JVM Vendor:            Oracle Corporation
09-Aug-2019 21:25:58.259 淇℃伅 [main] org.apache.catalina.startup.VersionLoggerListener.log CATALINA_BASE:         C:\Users\Cookiet\.IntelliJIdea2019.1\system\tomcat\Tomcat_8_5_43_javaweb
09-Aug-2019 21:25:58.259 淇℃伅 [main] org.apache.catalina.startup.VersionLoggerListener.log CATALINA_HOME:         F:\apache-tomcat-8.5.43-windows-x64\apache-tomcat-8.5.43
09-Aug-2019 21:25:58.260 淇℃伅 [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: --add-opens=java.base/java.lang=ALL-UNNAMED
09-Aug-2019 21:25:58.260 淇℃伅 [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: --add-opens=java.base/java.io=ALL-UNNAMED
09-Aug-2019 21:25:58.260 淇℃伅 [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: --add-opens=java.rmi/sun.rmi.transport=ALL-UNNAMED
09-Aug-2019 21:25:58.260 淇℃伅 [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.util.logging.config.file=C:\Users\Cookiet\.IntelliJIdea2019.1\system\tomcat\Tomcat_8_5_43_javaweb\conf\logging.properties
09-Aug-2019 21:25:58.261 淇℃伅 [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager
09-Aug-2019 21:25:58.261 淇℃伅 [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -agentlib:jdwp=transport=dt_socket,address=127.0.0.1:59208,suspend=y,server=n
09-Aug-2019 21:25:58.261 淇℃伅 [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -javaagent:C:\Users\Cookiet\.IntelliJIdea2019.1\system\captureAgent\debugger-agent.jar
09-Aug-2019 21:25:58.261 淇℃伅 [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcom.sun.management.jmxremote=
09-Aug-2019 21:25:58.261 淇℃伅 [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcom.sun.management.jmxremote.port=1099
09-Aug-2019 21:25:58.261 淇℃伅 [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcom.sun.management.jmxremote.ssl=false
09-Aug-2019 21:25:58.262 淇℃伅 [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcom.sun.management.jmxremote.password.file=C:\Users\Cookiet\.IntelliJIdea2019.1\system\tomcat\Tomcat_8_5_43_javaweb\jmxremote.password
09-Aug-2019 21:25:58.262 淇℃伅 [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcom.sun.management.jmxremote.access.file=C:\Users\Cookiet\.IntelliJIdea2019.1\system\tomcat\Tomcat_8_5_43_javaweb\jmxremote.access
09-Aug-2019 21:25:58.262 淇℃伅 [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.rmi.server.hostname=127.0.0.1
09-Aug-2019 21:25:58.262 淇℃伅 [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djdk.tls.ephemeralDHKeySize=2048
09-Aug-2019 21:25:58.262 淇℃伅 [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.protocol.handler.pkgs=org.apache.catalina.webresources
09-Aug-2019 21:25:58.262 淇℃伅 [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dignore.endorsed.dirs=
09-Aug-2019 21:25:58.262 淇℃伅 [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcatalina.base=C:\Users\Cookiet\.IntelliJIdea2019.1\system\tomcat\Tomcat_8_5_43_javaweb
09-Aug-2019 21:25:58.262 淇℃伅 [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcatalina.home=F:\apache-tomcat-8.5.43-windows-x64\apache-tomcat-8.5.43
09-Aug-2019 21:25:58.262 淇℃伅 [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.io.tmpdir=F:\apache-tomcat-8.5.43-windows-x64\apache-tomcat-8.5.43\temp
09-Aug-2019 21:25:58.263 淇℃伅 [main] org.apache.catalina.core.AprLifecycleListener.lifecycleEvent Loaded APR based Apache Tomcat Native library [1.2.23] using APR version [1.7.0].
09-Aug-2019 21:25:58.263 淇℃伅 [main] org.apache.catalina.core.AprLifecycleListener.lifecycleEvent APR capabilities: IPv6 [true], sendfile [true], accept filters [false], random [true].
09-Aug-2019 21:25:58.263 淇℃伅 [main] org.apache.catalina.core.AprLifecycleListener.lifecycleEvent APR/OpenSSL configuration: useAprConnector [false], useOpenSSL [true]
09-Aug-2019 21:25:58.268 淇℃伅 [main] org.apache.catalina.core.AprLifecycleListener.initializeSSL OpenSSL successfully initialized [OpenSSL 1.1.1c  28 May 2019]
09-Aug-2019 21:25:58.326 淇℃伅 [main] org.apache.coyote.AbstractProtocol.init Initializing ProtocolHandler ["http-nio-8080"]
09-Aug-2019 21:25:58.347 淇℃伅 [main] org.apache.tomcat.util.net.NioSelectorPool.getSharedSelector Using a shared selector for servlet write/read
09-Aug-2019 21:25:58.360 淇℃伅 [main] org.apache.coyote.AbstractProtocol.init Initializing ProtocolHandler ["ajp-nio-8009"]
09-Aug-2019 21:25:58.365 淇℃伅 [main] org.apache.tomcat.util.net.NioSelectorPool.getSharedSelector Using a shared selector for servlet write/read
09-Aug-2019 21:25:58.366 淇℃伅 [main] org.apache.catalina.startup.Catalina.load Initialization processed in 523 ms
09-Aug-2019 21:25:58.425 淇℃伅 [main] org.apache.catalina.core.StandardService.startInternal Starting service [Catalina]
09-Aug-2019 21:25:58.426 淇℃伅 [main] org.apache.catalina.core.StandardEngine.startInternal Starting Servlet Engine: Apache Tomcat/8.5.43
09-Aug-2019 21:25:58.440 淇℃伅 [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler ["http-nio-8080"]
09-Aug-2019 21:25:58.454 淇℃伅 [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler ["ajp-nio-8009"]
09-Aug-2019 21:25:58.458 淇℃伅 [main] org.apache.catalina.startup.Catalina.start Server startup in 91 ms
Connected to server
[2019-08-09 09:25:58,797] Artifact javaweb:war exploded: Artifact is being deployed, please wait...
09-Aug-2019 21:25:59.477 璀﹀憡 [RMI TCP Connection(2)-127.0.0.1] org.apache.catalina.util.SessionIdGeneratorBase.createSecureRandom Creation of SecureRandom instance for session ID generation using [SHA1PRNG] took [356] milliseconds.
[2019-08-09 09:25:59,511] Artifact javaweb:war exploded: Artifact is deployed successfully
[2019-08-09 09:25:59,511] Artifact javaweb:war exploded: Deploy took 714 milliseconds
09-Aug-2019 21:26:08.442 淇℃伅 [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [F:\apache-tomcat-8.5.43-windows-x64\apache-tomcat-8.5.43\webapps\manager]
09-Aug-2019 21:26:08.488 淇℃伅 [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [F:\apache-tomcat-8.5.43-windows-x64\apache-tomcat-8.5.43\webapps\manager] has finished in [46] ms