After tomcat restart, the web page cannot be displayed!

restart tomcat. using tomcat"s startup.sh and shutdown.sh
restart because you want to put a new file in webapps.
step is:
first shutdown, then put the webapps file, then startup start,
the first time startup did not report an error

[root@iz2zea0v6yzqrn1lbze76iz ~]-sharp sh tom.sh 1
Using CATALINA_BASE:   /usr/local/tomcat/tomcat907_1
Using CATALINA_HOME:   /usr/local/tomcat/tomcat907_1
Using CATALINA_TMPDIR: /usr/local/tomcat/tomcat907_1/temp
Using JRE_HOME:        /usr/local/java/jdk9
Using CLASSPATH:       /usr/local/tomcat/tomcat907_1/bin/bootstrap.jar:/usr/local/tomcat/tomcat907_1/bin/tomcat-juli.jar
**Tomcat started.**
tom.sh run succeed.

< hr >

shutdown, but there is no error.

[root@iz2zea0v6yzqrn1lbze76iz ~]-sharp sh tom.sh 0
Using CATALINA_BASE:   /usr/local/tomcat/tomcat907_1
Using CATALINA_HOME:   /usr/local/tomcat/tomcat907_1
Using CATALINA_TMPDIR: /usr/local/tomcat/tomcat907_1/temp
Using JRE_HOME:        /usr/local/java/jdk9
Using CLASSPATH:       /usr/local/tomcat/tomcat907_1/bin/bootstrap.jar:/usr/local/tomcat/tomcat907_1/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
tom.sh run succeed.

< hr >

but in the end, there was a problem, and then I changed the webapps file, and then I had to start again. The
startup did not report an error as before, but I went to the web page
and was unable to visit this site
www.ykmimi.com refused our connection request.

< hr >

then I want to restart it again. When I shut down tomcat, I get an error message from bug:

[root@iz2zea0v6yzqrn1lbze76iz ~]-sharp sh tom.sh 0
Using CATALINA_BASE:   /usr/local/tomcat/tomcat907_1
Using CATALINA_HOME:   /usr/local/tomcat/tomcat907_1
Using CATALINA_TMPDIR: /usr/local/tomcat/tomcat907_1/temp
Using JRE_HOME:        /usr/local/java/jdk9
Using CLASSPATH:       /usr/local/tomcat/tomcat907_1/bin/bootstrap.jar:/usr/local/tomcat/tomcat907_1/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
May 07, 2018 8:03:27 PM org.apache.catalina.startup.Catalina stopServer
SEVERE: Could not contact [localhost:[8005]]. Tomcat may not be running.
May 07, 2018 8:03:27 PM org.apache.catalina.startup.Catalina stopServer
SEVERE: Catalina.stop: 
java.net.ConnectException: Connection refused (Connection refused)
    at java.base/java.net.PlainSocketImpl.socketConnect(Native Method)
    at java.base/java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:400)
    at java.base/java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:243)
    at java.base/java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:225)
    at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:402)
    at java.base/java.net.Socket.connect(Socket.java:591)
    at java.base/java.net.Socket.connect(Socket.java:540)
    at java.base/java.net.Socket.<init>(Socket.java:436)
    at java.base/java.net.Socket.<init>(Socket.java:213)
    at org.apache.catalina.startup.Catalina.stopServer(Catalina.java:498)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:564)
    at org.apache.catalina.startup.Bootstrap.stopServer(Bootstrap.java:403)
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:494)

tom.sh run succeed.

add: the CVM has been restarted. If you perform the above steps, the problem remains?

Java

Mar.09,2021