linux系統tomcat執行./shutdown.sh時報錯java.net.ConnectException: Connection refused

報錯信息：

[root@iZuf65vg2nr3x1h1yzuyq1Z bin]# ./shutdown.sh 
Using CATALINA_BASE:   /usr/local/apache-tomcat-8.5.45
Using CATALINA_HOME:   /usr/local/apache-tomcat-8.5.45
Using CATALINA_TMPDIR: /usr/local/apache-tomcat-8.5.45/temp
Using JRE_HOME:        /usr/local/jdk1.8.0_221/jre
Using CLASSPATH:       /usr/local/apache-tomcat-8.5.45/bin/bootstrap.jar:/usr/local/apache-tomcat-8.5.45/bin/tomcat-juli.jar
Sep 11, 2019 9:15:54 PM org.apache.catalina.startup.Catalina stopServer
SEVERE: Could not contact [localhost:[8005]]. Tomcat may not be running.
Sep 11, 2019 9:15:54 PM org.apache.catalina.startup.Catalina stopServer
SEVERE: Catalina.stop: 
java.net.ConnectException: Connection refused (Connection refused)
	at java.net.PlainSocketImpl.socketConnect(Native Method)
	at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
	at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
	at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
	at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
	at java.net.Socket.connect(Socket.java:589)
	at java.net.Socket.connect(Socket.java:538)
	at java.net.Socket.<init>(Socket.java:434)
	at java.net.Socket.<init>(Socket.java:211)
	at org.apache.catalina.startup.Catalina.stopServer(Catalina.java:504)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.apache.catalina.startup.Bootstrap.stopServer(Bootstrap.java:406)
	at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:498)

解決辦法:

執行vim shutdown.sh，編輯shutdown.sh腳本

修改前: exec "$PRGDIR"/"$EXECUTABLE" stop "$@"
修改後: exec "$PRGDIR"/"$EXECUTABLE" stop -force "$@"

執行vim catalina.sh，編輯catalina.sh腳本，在最前面添加以下代碼

if [ -z "$CATALINA_PID" ]; then
    CATALINA_PID=$PRGDIR/CATALINA_PID
    cat $CATALINA_PID
fi